Top Air Purifier Reviews

Air Purifier Advice

Hunter Total Air Sanitizer – Air Treatment 30405 Is this one good for odors?

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by Wayland
(Kansas City, KS)

Q: Hunter Total Air Sanitizer 30405 – Is the Hunter Total Air Sanitizer 30405 a good brand to eliminate odors?

Thanks

A: In a word: NO. But if you can handle the loud volume of it the Hunter 30405 is ok for removing dust and pollen. Being a Costco brand it is at least easy for getting replacement filters.

Here is some of the info/specs on it:

99.9% Effective for dust pollen
HEPA Air Sanitizer
CADR:
107 Smoke
131 Dust
168 Pollen
– Patented Technology Captures and Kills
– Airborne Germs, Viruses and Bacteria
– Energy Star Certified
– 5 Year Warranty
– For rooms up to 26’ x 30’
– 3 Speeds – Sound Levels:
– Low – 45 decibels (VERY LOUD – and this is LOW!)
– Medium – 54 decibels
– High – 59 decibels
– Dimensions: 9.0″ W x 10.5″ D x 26.5″ H
– Weight: 14 lbs

So what’s my opinion of it?

You have a hard time finding reviews on this model, because they have not sold very well. And the ***** price of $299 didn’t work so now they’re on Sam’s Club for only $169.

The Hunter Total Air Sanitizer 30405 is also just a 2 technology unit (HEPA and a patented technology for electrifying the HEPA).

I couldn’t find where to get the replacement filters and cost on this – so if any one cones across that please email me…

For the money you can easily get something with more technology, that’s quieter, and better made.

Breathe Well,

Mark

Air Purifier to remove perfume smell

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by PAul
(VT)

We bought a condo in VT 1 year ago – strong perfume smell in bedroom – we have an IQ Air Filter – helps some – but we want to end the smell – knock it out – ideas?

MY RESPONSE:

Well that stinks. Besides things like Fabreeze any Air Purifier to remove perfume smells will have to kill or disable the odor molecules which may be adhered to the walls etc. Is it really perfume or do you think it is industrial cleaner from the party that sold it?

Several options exist: Hitting it with a dose of ozone may be able to get to it. Just don’t be in the room. You can often find an inexpensive Ozone machine like the one here. Under $100 and you can use it later.

I don’t think most carbon or eletrostatic nmachines would do enough to get rid of it without the air purifier on all the time.

Good Luck.

Does the electro-static air purifier make a zapping noise

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by Elaine
(Sunnyvale, CA)

I love your website. Excellent resource. I’m interested in the Alive Air but I’ve had an electro-static Honeywell that sounded like it was zapping things constantly. I don’t like the sound. Does that happen with the Alive Air? If not, why would the Honeywell make a zap and this one would not?

Thank you,
Elaine

Hi Elaine,

The air purifier zapping noise comes from the electrical charge caused by electrostatic “plates”. Think of the zapping noise as a very small electrical short. The electrostatic plates are why the Oreck Air Purifier and the Honeywell have this zapping noise problem on occasion.

I’ve had instances where cleaning them off, and removing any hair or dust can reduce any zapping noise in these models.

The Alive Air Machine was purposely designed to use a grid (which has holes) rather than plates, and hence does not create a zapping noise.

Hope that helped…

Breathe Well,

Mark

Lung disease air purifiers : Is it a good idea?

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Hi Should people with interstitial lung disease use air purifiers? If so what is the best one?

A; That’s a good question. Whether Desquamative interstitial pneumonitis, pneumonia, or other forms of interstitial lung problems the important thing is to avoid any irritants such as ozone. To keep airborne toxins and irritants away from the lungs will help reduce any stress on the lungs.

What I recommend is an air purifier that is primarily HEPA and Zeolite or Carbon such as this:

CADR Ratings: Is it a Good Measure of Air Purifier Quality?

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I have had many calls and emails asking me about CADR Air Purifier Ratings. What it means, and whether it is a good way to measure air purifier quality. Especially when they find companies that do not use it.

Here is my experience…

What are CADR Ratings

Would you like a reliable way to compare one air purifier to another? The AHAM CADR rating is one method used by some air purifier manufacturers to promote the value of their products.

But what is this CADR air purifier rating? Is it a reliable means to compare air purifiers? If so, why do so many top-quality air purifier manufacturers not bother to get their units rated?

CADR, short for Clean Air Delivery Rate. Developed by the Association of Home Appliance Manufacturers (AHAM) as a means of providing air purifier ratings to consumers.

Basically, CADR is a measure of an air purifier’s ability to produce pollutant-free air.

The CADR measures a certain number of cubic feet per minute. That is, the CADR essentially states the volume of clean air a portable air cleaner can produce at one time. For example, suppose a particular model has a CADR of 250 for dust. That means the unit can reduce dust particle concentration equivalent to adding 250 cubic feet per minute of dust-free air.

The manufacturers in this association are the very ones who determine what to test, how it will test, and what is a good performance. They decide by a negotiated mutual agreement among the associated manufacturers.

Obviously, the air purifier manufacturers have a vested interest in creating a test their products will perform well in. Unfortunately, this conflict of interest has created a test with severe limitations.

Many air purifier companies actively market their cleaners based predominately on this rating which stands for “Clean Air Delivery Rate”. It is a measure of air flow, not air purity. Therefore, other companies will skip this CADR Air Purifier Ratings altogether. Because it does not address some technologies critical to cleaning and purifying the air. CADR is associated with air flow alone, make its numbers, at best, Irrelevant and at worse, Misleading.

Why is it misleading to compare air purifiers by CADR numbers?

Most units only state three CADR numbers: one for smoke, another for dust, and a final one for pollen, which are the largest of all particles.

The number means much the same thing in each case. It still refers to the ability to reduce that material’s concentration by a certain amount in each time. It’s just that virtually all units can do that differently for the different kinds of home air pollutant. So the manufacturers state different ratings for each category. There are lots of reasons for that: particle size and weight, filter efficiency which differs from one type to another, and more.

One of the reasons home air purifier makers go to the trouble of measuring and reporting those three different numbers. Is that they are (almost) all members of the AHAM, the Association of Home Appliance Manufacturers.

That organization certifies that the numbers that air purifier makers report are accurate and honest. They use an independent, 3rd party lab to test the devices and verify the numbers reported.

Of course, “honest” is a little bit of a relative term here. No major manufacturer tries to deliberately misreport their numbers. That would threaten their membership in the AHAM and result in bad publicity, something none of them wants. But there are various ways they can report those numbers that can differ from one device to the next.

How to Easily Manipulate CARD Numbers

The fact is, if a manufacturer wanted to market their purifier just according to the CADR numbers. They can simply ‘beef up’ the fan speed, eliminate certain technologies and just manufacture the same limited filtration systems most companies use. For example, if you pull air too quickly through the unit to artificially inflate your CADR numbers. Any UV technology that protects you and your family from harmful germs and viruses. That traditional air purifiers miss, might negate any effects of killing germs and viruses.

CADR Air Purifier Ratings Do Not Factor Germs, Bacteria, Mold, Mildew, Fumes, Odors, etc.

The CADR is basically only a measure of how rapidly air circulates through a given air filtering device. While this figure is perhaps relevant for most filtration-only devices that attempt to clean air using only one or two types of filters. It is meaningless because filtration is simply one single aspect. The fact is that the CADR number tells you nothing about how well, or even “IF”, an air purifier filters germs, bacteria, viruses and other harmful biological agents. Neither does it assess how well the unit clears chemical fumes and odors.

The easiest way to think of it is that, even though everyone in the industry refers to their products as an air “purifier”. The fact is that most competing products out there are simply air “filters” that do not use anywhere near the number of additional “purification” technologies available, e.g., UV light, TiO2, activated charcoal, negative ionization, etc.

Ways of Reporting CADR

Two different home air purifier makers may have units with identical CADR numbers but still be quite different in their ultimate effects.

The key to using CADR numbers to compare models accurately lies in two things: (1) take them as approximate, (2) look closely at what is behind them. The first is obvious, but what does (2) mean?

Simple, just get the context around that number. Look for the number of air exchanges per hour, and the specific room characteristics assumed by the CADR. The AHAM gives manufacturers a little leeway here.

A stated CADR references a ‘standard’ room. Ensure that your room is ‘standard’. That is, the standard used for CADR’s assumes an 8-foot-high ceiling because the ordinary home has (or had for many years in the U.S. after WWII) a ceiling that high.

As the years have rolled on, more and more home designs deviated from that, so adjust accordingly. If your home has a cathedral ceiling, an open area that leads up to a second floor, or other deviation from ‘the norm’ look for a home air purifier with a larger number to compensate.

In brief, don’t assume that because your floor area square footage is the same or even smaller. Than what the model specifies that the device will purify your room air totally. The device operates, after all, on the total volume, not just the air from your head on down.

It’s a good idea to follow the AHAM’s “2/3 Rule” but modified. What’s that?

The (Modified) 2/3 Rule

Suppose you have a room measuring 10′ x 12′ (120 square feet) whose air you want to purify and keep smoke-free. You should look for a home air purifier with a Smoke CADR number of at least 80. (120 x 2/3 = 80).

The CADR test on the air purifier only use the highest setting. Since your home unit will typically run at the middle speed/power most of the time. The CADR obtained by the 2/3 Rule is the bare minimum and you should add about 30% to get a ‘floor’ on the CADR number.

So, start with 120 x 2/3 (the 2/3 rule) = 80. ADD 1/3 to that, so: 80 + (80 x 1/3) = 107 (approx).

That calculation assumes an 8-foot ceiling. So naturally if you have one that’s higher or not flat, open to another story, etc. multiply accordingly. It would be too complicated to detail here what is “accordingly” for the general case, so just approximate your situation.

For example, if you have a 12-foot sloping ceiling, add about another 30% to the number. So, for this case, that number becomes: 80 + (80 x 1/3) + (80 x 1/3) = 133 (approx).

CADR Helpful but Not the Only Factor to Consider

CADR numbers, helpful as they are as a starting point. They are not the only important feature for ensuring a good air purifier model as the ratings don’t capture some especially useful information.

For example, because the AHAM tests are short they don’t tell you how the air purifier will perform over the long haul. They also don’t encapsulate how well the air cleaner captures small particles. Which are often the most damaging to health nor do they tell you how well a model removes VOCs (Volatile Organic Compounds), which can be unpleasant or even unhealthy.

So, the moral is: use the CADR as a starting point but look also to other features of any home air purifier you’re considering before you make a final choice.

To start on the process the AHAM maintains a searchable Directory of Certified Room Air Cleaners.

Include link – https://www.ahamdir.com/room-air-cleaners/

The size of these pollutants is quite large in comparison with other particles found in the air. Over 90% of all airborne particles in our homes and offices are smaller and include viruses, bacteria and mold.

CADR air purifier comparisons provide no indication of a filters efficiency at removing these smallest of all particles. These are the  the ones that purifiers are generally the least efficient at removing. This test also does not measure gas and odor reduction. Since most people buy air cleaners for these purposes, this standard is of no real value to consumers.

Longer-term tests clearly show that collector plate loading by contaminants can reduce efficiency to less than 20%. This can have a severe impact on Clean Air Delivery Rate that would not show up in the CADR testing. Failure to provide consumers with this critical information prevents them from understanding how important it is to follow use and care directions routinely.

The top four reasons the AHAM CADR rating is unreliable

  1. The rating test performed by CADR is not a strict, definitive test. It fails to address the majority of lung damaging airborne particles.
  2. The test just measures the elimination of the particles. Even ionizers rate well. The well-documented ineffective filtration and dangers of ionizer air purifiers is a good indication that this test is questionable.
  3. The test does not measure the performance of the elimination of gas and odors. Although many people buy air cleaners for this purpose.
  4. The major downfall with the test is that it does not measure long-term performance. The values in CADR air purifier comparisons represent performance during the first 72 hours of use. Air cleaning system generally run for 5000 hours before you replace the filter. The performance over this span will often be drastically lower and depends to a significant degree on the construction of the air cleaner and the air cleaning technology.

Based on these concerns CADR air purifier comparisons are questionable and fail to really serve the best interests of consumers. The manufacturers of the world’s best air purifiers universally ignore this test. Submitting to it would seem to grant it an air of credibility while failing to really prove the superiority of the air purifiers they have to offer you.

A better standard than the AHAM CADR rating is available

A superior testing method to the AHAM CADR rating went into effect in 2000. This determines HEPA efficiencies in the smallest of particles over extended use. It determines air purifier effectiveness under a worst-case scenario.

It is known as EN1822 (European Norm 1822).

Link – https://www.en-standard.eu/set-en-1822-and-en-iso-29463-standards-for-heigh-efficiency-air-filters-epa-hepa-and-ulpa/

The EN 1822 standard tests air purifier effectiveness over a broad range of particle sizes. This determines the particle size the filter is the worst at removing, known as the Most Penetrating Particle Size (MPPS for short). These particles then test the filters efficiency at air speeds that reflect actual use conditions.

Since this gives the absolute worst-case scenario performance measure, there is assurance of real-world performance in their own homes.

CADR Conclusions

CADR will give you some idea of how the air flows across your HEPA filter, but that is about it. It will not give you any idea of the purifier’s effectiveness in eliminating odor, gas, viruses, bacteria, etc.

What is MERV Rating for Air Filters?

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Introduction

The discussion below is about MERV rating for air filters. You use air filters in air cleaners which are also known as air purifiers. Air conditioners and furnaces also use MERV rated filters.

What is MERV or the Minimum Efficiency Reporting Value?

MERV or Minimum Efficiency Reporting Value measures the performance of large air purifiers in cleaning a whole house or building. It demonstrates how efficient an air filter is at catching particles of various sizes. The higher the MERV the better the filtration properties of a filter.

Clean Air Delivery Ratings or CADR measures the performance in smaller portable air purifiers.

Link to CADR Article

The Environmental Protection Agency defines MERV as:

Minimum Efficiency Reporting Values, or MERVs, report a filter’s ability to capture larger particles between 0.3 and 10 microns (µm).

Environments Protection Agency

MERV measures the performance of different filters. It then goes on a say that the higher the filters rating the better it is at trapping certain particles.

Some of the common air contaminants are pollen, bacteria, pet hair, dust mites, carpet fibres and tobacco smoke.

How were MERV Ratings created?

Created by the American Society of Heating, Refrigerating and Air-conditioning Engineers (ASHRAE), in 1987. They were based on older standards created by the ASHRAE called “Standard 52” which was the first formal method of testing air purifiers.

Donald Newell states that the previous standards tested the following properties of a filter:

1. Particle removal capacity, 2. Resistant to airflow, 3. Expected operation life

Donald Newell’s paper

But MERV only measure the first of these qualities which is particle removal capacity.

MERV rating measure the effectiveness of a filter to trap particles if different sizes.

How the MERV Ratings are Calculated

MERV values can range from 1 to 20. The higher the value the less particles or contaminants can pass through the filter. MERV ratings are determined by completing a series of tests for each air cleaner. Twelve categories of different sized particles introduced into the test air. The 12 categories divided into 3 size ranges called E1, E2 and E3. Each of these ranges has 4 further sub ranges.

  • E1 0.3 to 1.0 µm.
  • E2 1.0 to 3.0 µm
  • E3 3.0 to 10.0 µm.

The size of the particles which range from the smallest diameter to 0.3 to the largest 10 micrometers (µm). For comparison, a human hair is about 50 µm in diameter. The particles then pass through the filter and the density of the particles recorded before and after passing through the filter. The size of particles ranges from 0.3-0.4 micrometers (microns) to larger particles from 7 to 10 micrometers. The lab completes the test six times. So, there are six results for each of the 12 categories, a total of 72 tests in all. The final count is a plus the total number of particles in the air originally converts into a percentage. The MERV is determined by the worst achieving result. That is why it is known as the minimum ERV. Here’s how Air Filter MERV Ratings relate to the size of particle trapped:

  • MERV 1 to 4— <20% of large particles (3 to 10 microns) captured
  • 5 to 7—Between 20% and 69% of large particles captured
  • 8 to 10—Approximately 85% of large particles and 50% of small particles (1.0 to 3.0 microns) captured
  • 11 to 16—More than 90% of large particles and between 70% and 90% of small particles captured
  • 17 to 20—Even the smallest particles (< 0.3 microns) captured

Is a higher MERV rating better?

Not in every case. It is not so simple as the higher the value the better the filter is for you. A filter with a higher MERV rating has smaller pores. This makes it more difficult for the air to flow through. This can create more resistance in the running of your HVAC (Heating, Ventilation and Air Conditioning system) which can make it more inefficient to run. Reducing the air flow generated can worsen the air quality in your home and damage the fan on your air conditioning unit.

You need to choose the highest MERV rating recommended for your machine. If you are using a filter with a higher MERV rating than that recommended by the manufacturer this means that you HVAC system must work harder to maintain the same airflow. This could put more pressure on your system and possibly damaging it. Therefore, you should always use the filter with the MERV rating recommended by the manufacturer.

Filter with a MERV rating of 7 to 12 are suitable for removing most particles in a domestic situation. A MERV rating 8 can filter out contaminants such as pollen, saw dust and mold spores. Hospital generally use filters with a MERV rating of 13 to 16. A MERV rating 13 with smaller pores can filter out bacteria and tobacco smoke. Clean rooms, surgical operating rooms and areas requiring absolute cleanliness generally use MERV rating of 17 to 20. Filters with higher MERV rating filter require more frequent replacing. Although lower rated MERV filters are less efficient over all they allow more air flow which can help your HVAC system.

MERV Rating Charts

There are various MERV rating charts available. This chart shows the pollutant types filtered out at each MERV rating. Link: http://www.mechreps.com/PDF/Merv_Rating_Chart.pdf

What MERV rating filter would you use in your home?

The filter in a HVAC system traps dust, allergens, and bacteria. and mold. The MERV rating shows how effectively a filter prevents dust and other particles passing through a filter into the airstream. Medium efficiency filter from 7 to 13 are best at removing small to large particles. These can be as effective as HEPA filter art controlling indoor air particles. These filters are generally more expensive than HEPA filters.

The air filters are quieter and allow more airflow in the HVAC fans than HEPA filters because they have less airflow resistance. ASHRAE recommend fitting of rating 13 for HVAC systems home air conditioning. But check your system can cope with this filter. As a higher rating filter will mean less air flow and higher electricity costs. If your system can not cope with this rating, go for the highest rating recommended for your HVAC system. HEPA filters help improve air quality. HEPA stands for High Efficiency Particulate Air. Link to HEPA Page You need to change your MERV filter more regularly with higher MERV rate filters.

Otherwise, they become clogged which then restricts the air flow. This makes them less efficient and can damage the machine. A higher MEV rated filter is usually thicker which means the HVAC unit must work harder to pump the air around the system. So, the energy costs are more expensive. MERV 5 to 8 rating is generally good to remove dust, mold spores and pollen. If you suffer from allergies a higher rated MERV between 10 -12 would be good. As this filter can trap particles as low as 1 micron such as pollen, mold spores and automobile exhaust.

The filter has two main types, pleated and non-pleated. The pleated is usually a higher MERV rating and more expensive. A MERV rating of between 10 -12 should be sufficient to remove allergy causing particles such as dust, pollen, and pet dander. Some of the better-quality air filter have a carbon layer which is useful to remove odours such as pet smells.

Pre-Filters vs. Final Filters

Final filters are the primary filter in an HAVC system or in standalone air conditioners. If used the pre-filters filter out the larger particles in the air flow and the final filter filters out the remaining smaller particles. This has the advantage of prolonging the life of the expensive final filter.

How often should I change my air filter?

How regularly you change your air filter can depend on several factors: 1. Air filter model 2. The quality of indoor air 3. Number of people in the household 4. Number of Pets 5. Level of pollution outside the home Manufactures usually recommend that you replace basic filters every 3 months. If you suffer from allergies, you can change them more frequently.

How to compare air cleaners?

The MOD method is the only measure to particle reduction by high grade filters. The Federal Government use this method. This is the MOD system used by the military for high grade air filters. 

However, there are two private trade associations which have set standards for the rating of removal of particles from the air by system or portable air cleaners.

They are the ASHRAE and the Association of Home Appliance Manufacturers (AHAM) The standards measure how effective an air cleaner is in removing particles from the air, used in comparing different models. These standards only measure the effectiveness of removing particles from the air. There are no standards for how effective air cleaners are at removing gaseous pollutants from the air. There is no conclusive research to show how effective different models of air cleaner are at removing these pollutants.

What is pressure drop?

Pressure drop is air resistance. Your air filter is a barrier between your HVAC system and your vents. That slows down the amount of air that can pass through your vents to your system. The amount air flows slowed by the filter is its pressure drops. The pressure drop varies according to how tightly woven is the fabric of the filter. The more tightly woven the harder for the air to pass through and therefore the greater the pressure drop. All filters will result in some pressure drop.

Fiberglass filters with a MERV rating of 1-4 have some pressure drop. But as there is only a small drop in air flow this has little effect on air quality. This is because they are highly porous letting small particles pass through the filter and only trapping some of the larger particles. Pleated filters have a higher MERV rating of between 8 and 15. These are pleated filters which can filter out small particles effectively with only a slight pressure drop.

These filters do initially have an initial pressure drop but if you change the filters regularly this does not harm your HVAC systems. As you use the filter after a time dust, dirt and mold will become trapped in your filer reducing air flow and increasing pressure drop. Replacing your filter every two to three months will retain your HVAC system performance.

The MERV filter recommended for preventing the transmission of airborne illnesses such as COVID-19?

Although ASHRAE does not recommend a specific MERV rating to cope with preventing COVID infections it does suggest upgrading systems to MERV rating 13 or highest possible achievable in emergency plans. 

HVAC systems may decrease people’s exposure to airborne pathogens that spread COVID 19 and other diseases. Most HVAC system come fitted with filters of MERV rating of 8 and above. A filter with MERV rating of 13 and above can trap viruses. Upgrading to a HVAC filter rating filter could improve your systems ability to trap viruses. HVAC systems can be adapted to fit these filters. You can also consider running your filter either continuously or more frequently. In some systems you can run the fan without heating or cooling. Remember that air cleaners alone will not stop CIVID 19 viruses.

Limitations of the MERV Rating System

The MERV rating can only predict the size of particles it removes from the air. But gases are also a pollutant and the MERV rating is of no use for them. Newell states that air filters:

are likely to perform worse than predicted because of various installation conditions.

Donald Newell’s paper

MERV rating assigned under perfect laboratory conditions and may not be accurate in real world situations. This is known as the installation affect.

MERV rating are only applicable to air cleaner used in whole building and are not effective for small portable air cleaners.

Conclusion

The MERV Rating is a useful way to determine the capacity of large air cleaners. Calculated by testing filters. The worst-case performance of the test then used to calculate the MERV rating. There are other factors to consider when buying an air filtration system. You should not go just for the system with the largest MERV.

Do Air Purifiers Really Remove Viruses?

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Can Viruses Be Filtered By Air Purifiers?

Because viruses are to small, most air purifiers cannot capture them effectively, although most claim to in their promotional material. Air purification systems that have HEPA filters, ultraviolet lights and electrostatic filters achieve the best results since none alone can guarantee consistent removal and eradication of viruses from the air stream.

HEPA Filters

HEPA filters have been used in biomedical applications since the 1940s to prevent the spread of airborne bacteria and viral organisms. Specific requirements for different types of HEPA classifications range from cleanroom quality to true HEPA filters to HEPA-like filters. True HEPA filters are available for the residential market and they are regulated by the United States Department of Energy (DOE) to be 99.997% efficient, allowing no more than 3 particles in 10,000 to penetrate the filter. Even the best HEPA filter will not kill viruses, however, and can lose its effectiveness at trapping viruses as the particulate matter builds up and causes more resistance to the airflow.

Air purifier manufacturer IQ Air has claimed to develop a HyperHEPA (IQ Air’s trademarked name for this technology) filter capable of removing particles down to .003 microns in size with 99.5% efficiency.  This is 100 times more effective than sta  IQ Air backs up its claims by measuring each shipped air purifier with a laser particle counter.  Conceivably, these IQ Air models could be the most effective units on the market in filtering viruses. Even though these purifiers are used in some hospitals and clean rooms, according to the EPA there is no standardized test available to measure the effectiveness of virus filtration.

Ultraviolet Germicidal Irradiation (UVGI)

Health care professionals use ultraviolet lights to neutralize airborne microorganisms like germs, bacteria or viruses, although some mold and bacteria spores are resistant to UV radiation. For residential applications, however, the EPA warns that there is no standard to measure the effectiveness of UV cleaners and portable units and they probably have a limited effectiveness in combating viruses.

For UV lights to be most effective they need to be exposed to the air flow longer than most residential units allow. Therefore, the most effective air purifier designs direct the UV lamp onto the HEPA filter so the particles trapped by the filter are treated by the UV lamp for a sufficient period of time to destroy the viruses.

Electrostatic Precipitators

This method of air purification uses opposing charges to cause particulates to stick together and fall out of the air and land on a collection plate. Filters capture very fine particulates, including viruses, but it does not kill them. According to EPA studies, efficiency declines rapidly as the collection plates become covered with debris and must be changed often if they are the sole air purification method. When combined with a HEPA filter and UV lamps, however, electrostatic units maintain their effectiveness much longer.

Photocatalytic Oxidation (PCO)

PCO cleaners uses hydroxyl radicals to remove gaseous pollutants but does not remove particulates. The EPA cautions that PCO cleaners’ effectiveness in residential settings is limited, and testing has produced inconclusive evidence of their effectiveness against volatile organic compounds (VOC). In fact, some PCO devices were found to produce new indoor air pollutants while failing to destroy existing pollutants.

Ozone Generators

According to the EPA, ozone generators can be a threat to public health despite claims they neutralize odors and irritants in the air. Although studies have proven that ozone removes certain biological contaminants from the air, data suggest that the resulting concentration of ozone would exceed acceptable standards, up to 5 to 10 times higher than recommended. Air purifiers that emit small amounts of ozone — .01 to .02 or less — are safe and do assist in removing viruses from the air stream.

Conclusion

  • The EPA’s August 2009 report on air cleaner effectiveness indicates that standards are needed to guide tests in determining the effectiveness of air purifiers on virus removal.  Currently, no standard exists.
  • Bottom line – Inconclusive.  HEPA filters may be able to capture some viruses and prolonged ultraviolet light may be able to kill viruses but with the lack of testing standards, effectiveness is currently unable to be determined.

Source information:

Ultraviolet Air Purifier

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An ultraviolet air purifier can rid the air of germs as well as other allergens.

The UV air purifiers have always been popular in the market for their power to sterilize the surrounding air. They are generally installed into air-conditioning systems of homes but are also available as portable units that will purify the air in a decent-sized room. These are usually a lot more economical and work wonders for any allergy sufferers in your family.

How Ultraviolet Air Purifier Technology Works

We know that exposure to sunlight has many benefits but in addition, certain UV wavelengths have the power to destroy micro-organisms such as bacteria and viruses – mold spores included. An ultraviolet air purifier utilizes the shortest UV wavelength of concentrated light to breakdown the contaminants and kill germs. This form of UV light can be harmful if exposed to us and can damage both our skin and eyes severely.

For the larger whole house UV air purifiers, the light lamp that produces that ultraviolet lamps need to be replaced around once a year to keep it efficient at killing any contaminants. This UV lamp is normally installed near the main air filter of the air-condition or central heating system in order for it to be potent. The potency is also reduced if a lot of dust or dirt settles on the ultraviolet lamp, therefor regular professional maintenance will be necessary.

UV air cleaners these days do not only utilize the power of ultraviolet light to clean the air, as this may not be sufficient. Most air cleaners these days will make use of other air purification technologies such as an efficient HEPA air filter. The HEPA filter is capable of filtering out the tiniest of allergens and prevent contaminants such as pollen, smoke and dust from ever reaching your nose – something an ultraviolet air purifier just will not do.

Many non-UV air purifiers in the market work well initially but after a while, mold as well as other organisms and contaminants may build up on the air filter and may actually thrive there. This is exactly why having ultraviolet bulbs to sterilize the filter is so important. Many people who have utilized UV air cleaners whether portable, or installed into their homes, have noticed a significant reduction of allergy symptoms. Thus, when you combine both the HEPA and a UV lamp, what you get is an extremely potent air cleaner unit.

There are many very good UV air cleaners available these days and they all do a relatively good job at purifying your air. So ultimately, your options come down to brand popularity, price as well as reliability. The following are a couple of the UV air purifiers that have received the best feedback.

Popular Makes Of Ultraviolet Air Purifiers

HFD-135 Honeywell Air Purifier

Honeywell air purifiers are amongst the most raved about brands when it comes to home air cleaners and also present the most value for money. They are also the most recommended for allergy and asthma sufferers by medical professionals because of their easy to replace, high-tech air filters. Honeywell air cleaners are quickly gaining in popularity because they really do work well when it comes to purifying air. The HFD-135 is no exception. This UV antibacterial air purifier comes with 2 ultraviolet bulbs to more efficiently remove allergens. The HD135 is a little portable unit that works quietly but powerfully, with 3 speed settings so you can adjust your preferred level of air circulation in your room.

It comes in an all black, barrel-style casing and although it’s on the large side, its odd form presents no problems in fitting it into corner of any room. It’s very easy to regularly maintain this ultraviolet air purifier all on your own by removing the filters and giving it a good rinse. This unit has no issues and many who use it tend to leave it running all day without problems. The Honeywell HFD-135 air purifier comes complete with a 5 year warranty to boot. Highly recommended!

Surround Air XJ-3800 Intelli-Pro Air Cleaner

The Intelli-Pro is another popular model for homes. It boasts a super quiet air purification unit with UV as well as HEPA filter technology. The other beneficial features the XJ-3800 has to offer is that it is very efficient with energy and have a power-saving feature to lower your electricity bills, should you choose to leave this unit running 24/7.

The Intelli-Pro also comes with ionizer filters to help trap dust particles better, as well as carbon filters to not only detoxify the air but also to remove any unwanted odors such as tobacco, cooking and pet smells. The ionizer within the Intelli-Pro is rated as a 100% safe and does not produce ozone as some other brands of air cleaners do.

The Pros? The Surround Air XJ-3800 air purifier unit is the most efficient when it comes to running and maintenance cost, as it comes with a pre-filter that is easily removable and cleanable. The manufacturer also supplies very inexpensive filters and UV bulbs should you need to replace them.

 

Virus Air Purifiers

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Viruses are the smallest microbes; only bacteria, protozoa and fungi are larger in size. Some of the harmful viruses are the Swine influenza (flu) virus, the SARS flu (Severe Acute Respiratory Syndrome) virus, Asian Flu and Hong Kong Flu viruses.

Air Oasis G3 Air-Purifiers (Patent Pending) Whereas HEPA filters can only remove small particulates, and carbon filters can only remove chemicals, VOC and odors, Air Oasis G3 UV technology is highly tested and proven to remove most viruses, bacteria, MRSA (Methicillin-resistant staphylococcus aureus), mold spores, VOCs, chemicals, gases, odors, pet dander, pollen and particles of 0.001 micron size. There are many models of Air Oasis, but the Air Oasis G3 Portable is specially designed for small rooms such a nursery/bedroom/study.

Airfree Air Sterilizesr Airfree P1000, Platinum P2000 and Onix 3000 heat sterilizers are claimed to be the safest and most tested air purifiers. They work only on heat. Inside their patented ceramic core, 99.99% of microorganisms (molds, yeasts, bacteria and viruses) are destroyed at around 400F without increasing the room temperature noticeably. This technology provides silent, effective operation, is maintenance-free, and energy efficient (uses below 52 watts); available in three models./p>

Whole House Air Purifiers

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Whole House Air Purifiers are generally for direct installation into your home HVAC system, cleaning the air through its ducts. Whole House Air Purifiers can also be standalone units, placed at a centralized location, and clean your entire home.

Many whole-house filters list their MERV value, and the top performers rate MERV higher than 10. Whole-house air-purification is an expensive proposition if you do not have forced-air heating. You have to install it with professional help into the ducts of your forced-air heating system and most need to be wired into your home’s electrical system.

Whole-house (built-in) air-cleaners remove dust and smoke particles from the air efficiently, using a highly-efficient filter. An electronic precipitator produces some ozone which might dirty the walls with deposited pollutant particulates.

Whole-house air filters are economical alternatives to whole-house built-in air-cleaners. You just remove the old filter and attach the alternative whole-house air-filter to the forced-air heating or cooling system. However, these are less efficient than built-in air-cleaners.

Some of the popular and top-rated whole-house air-purifiers are from: Airpura, Blueair, IQAir, Austin Air, NQ, Trion and Air-O-Swiss; a few are given below.

*Note: The terms Air-filter and Air-cleaner are generally used interchangeably. However, air-filtration is generally used to refer to the forced air-heating/cooling system at home.

IQair’s Perfect 16
IQair’s perfect 16 is rated 16 MERV, the highest rating for an air-filtration system. It can be used with any existing forced air system, and is guaranteed to be around hundred times more efficient than a standard furnace filter, at removing allergens, smoke, dust, and microbes. IQAir gives a “10 X clean air-cleaning guarantee”, and go further by having an authorized installer test your home air before as well as after installation to prove their point. Further, you don’t need to change the filters of this model for up to 3 full years (unlike conventional filters that have to be changed several times a year). The Perfect 16 purifier is integrated into your existing HVAC system. IQAir’s micro fiber technology replaces your existing HVAC filter with 10 times more efficiency.

Aprilaire Premium Whole House Electronic Air Cleaner
This model has been Aprilaire’s top product for 3 years. This model features excellent filtration with at least 94% efficiency at removing 0.35 micron size disease-causing bacteria, traps viruses with 80% efficiency, and is over 99% efficient at trapping pollen. It filters up to 72 square feet. Air passes through an intensified electrical field generated by ionizing wires. The pollutant particles get charged in the electrical field and trapped by earthed micro-fiber media. Aprilaire claims its air-filtration to be MERV 15.

An HVAC professional has to install this unit in your central air and heating system. This model is economical for those who cannot invest in expensive whole house air-purifier systems.

Quiet Air Purifiers

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Though air-purifier companies often claim their machines to be silent, the commonest complaint from users of most air-purifiers is “Noisy at high speed” or “Noisy above low speed”. However, everything – including silence – has a price.

*Note: If any air-cleaner/purifier is marketed without a noise specification (decibels), assume it to be loud. The Quietest air purifier will have noise of 15 dB(A), and a typical air purifier running on low gives of 36 dB(A) noise.

Blueair 603 HepaSilent Air-Purification System

The Blueair 603 HepaSilent air-purifier employs both mechanical and electrostatic air filters to deliver efficient vacuuming. It is also one of the quietest room air purifiers in the market, with eight models to choose from;

Whirlpool Whispure 510 Air Purifier

The Whispure air-purifier covers 510 Sq. Ft., and features a HEPA Filter and a filter-replacement indicator; it operates quietly.

Bionaire Air Purifier

One of the most silent air-purifiers recommended by market sources is the Bionaire Air Purifier model BAP1300, which features a two-stage purification system. Made to fit allergic individuals, it removes pollen, dust mites, animal dander, smoke, odors, and other allergens. The other features are: 4 air speeds, an odor-capturing pre-filter, a CADR of 315 (very good), effective for 500 sq.ft. rooms, remote control, and filter monitor. However, the filter should be changed once in 3 months. This air-purifier works quietly and efficiently.

Airfree Onix 3000, Platinum 2000 & P1000

These air-sterilizers are not only very good virus air-purifiers, but also work in total silence. Their noise-ratings are excellent. Airfree air-sterilizers employ a ceramic core patented technology to kill/destroy any organic matter such as: bacteria, viruses, pollens, cat/dog dander.

Recommended Hamilton Beach 04383 True Air Air Cleaner Review

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There’s so many dust and allergens floating around in the air that it’s no wonder so many people are getting sick. It’s not only spring time that causes allergies to flare up, people are having trouble with allergies all year long. This is because they are unable to deal with the impurities in their own home.

Hamilton Beach provide a solution with the True Air Allergen-Reducing Air Cleaner. It has a compact design that you can place in any room. It also looks pretty trendy so will fit well with your home decor.

The Hamilton Beach 04383 has  received really good reviews from customers and is priced at the cheaper end of air purifiers so it’s great value for money. It has three speed settings and a simple control knob. The purifier has a slim tower design just six inches wide.

Hamilton Beach distribute home appliances and commercial restaurant equipment all across the country. The have a strong brand name and pride themselves on delivering superior customer service. They currently sell over 35 million products each year.

Can Hardly Be Heard

This air cleaner is very quiet and on the low setting you can barely hear it. This means you can leave it on all night while you’re sleeping. In fact even on the medium setting you shouldn’t have any trouble going to sleep. It’s a white noise also, so will help to block out other disturbing sounds.

On low the fan can barely be heard, medium is like a normal fan noise and is not bothersome at all. I actually enjoy this white background noise… more

Permanent Filter

This air cleaner comes with a permanent filter so you never have to buy new ones. You’ll save money and the hassle of searching around for the right filter. All you need to do is clean the filter with a vacuum every six months to make sure it is free from dust and other debris.

Another reason I bought it is that it IS a HEPA quality cleaner. But I don’t have to buy replacement filters–ever. This one has a “permanent” filter, which I didn’t even know existed… more

Helps You Breathe

Do you have allergies or just want to breathe cleaner fresher air? This air purifier will do just that. Many people have noticed a big difference to the way they breathe and seen a big reduction in their allergies.

This machine is so quiet and helps me breathe some much better at night against my allergies. I am so happy with this product, and the filter is very easy to clean and has lasted for over a year now… more.

Features

The Hamilton Beach Air Cleaner comes with a permanent HEPA-grade filter that’s ideal for small to medium-sized rooms up to 160 sq ft. This filter will remove airborne allergens and leave the room feeling cleaner.

It comes with 3 speed settings, all of which are said to be ultra-quiet. It has a tower design and can be used standing up or lying down. The Hamilton Beach 04383 has dimensions of 13.5 inches high by 8.5 inches long and 6 inches wide.

Pros & Cons

This air cleaner works pretty well for a smaller air purifier. A big plus of this model is the cheap price. It stands up well compared to other units in this price range. The permanent filter is also really handy so you can save yourself the big expense of buying new filters.

This doesn’t have the quality or power of larger models and you’ll definitely need something bigger if you want to get rid of cigarette smells.

What Others Are Saying

It’s incredibly quiet and it has helped his allergies a lot. After about a month of constant use on the medium setting, I vacuumed the filter. It was filthy. I was very impressed with how much dust it pulled from the air… more.

Our daughter has allergies and we’ve tried several different air purifiers. This is by far the best we’ve tried. It is much quieter than others, compact size, the filter is permanent, and it… more

Recommendations

If you’re looking for a cheaper model this is recommended as a buy as it outclasses the other units in this price range. It’s available in black and white and you can find the best price for it here. If you’re looking for a full air purifier that will clear the air of gases and smoke smells try a larger model such as the Whirlpool Whispure Air Purifier.

 

Portable Air Purifiers

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Where And How To Use A Compact Air Purifier

Compact room air purifiers are exceptionally good in offices where pollution can come from the outside when doors are opened or chemically from the odors produced by perfumes, talc, lotions and other such products that are brought in by employees and clientele. They are also good to use in office storage closets and copy rooms where there may be dust and lint from the stored files and from copy paper.

With the current interest and concern for clean air, we want to have clean air in all of the rooms in our homes. The current trend is towards the personal or compact home, or office, air purifier. Almost all of the companies that manufacture air purifiers have a portable or compact type available.

Did you know that there is an air purifier available for your refrigerator? That is a place we would not think of using an air purifier but Oreck thought of it, and the Oreck Refrigerator Air Purifier can eliminate cross contamination of food odors and sterilizes the refrigerator every hour. This elimination of cross contamination and sterilization reduces spoilage and breaks down any pesticides on produce that may be in your refrigerator. The small and compact size of the Oreck Air Purifier is also easy to use in a closet, bathroom or in your automobile.

There are other air purifier companies that offer compact or portable air purifiers, among which are: Ionic Pro which also has a car ionizer; IQAir HealthPro and IQ HealthPro Plus; Kaz Inc. makes an 8×10 room air purifier; and Vernado.

The Honeywell HHT-011 HEPAClean Compact Air Purifier is a table top model that is recommended to be used in rooms of up to 85 square feet. It has a HEPA A type filter that will eliminate up to ninety nine percent of mold spores, pollen, pet dander, smoke and dust. For additional cleaning power there is an optional ionizer with a washable pre-filter. The nightlight featured on the air purifier gives off a soft light. The Honeywell HHT-011 HEPAClean Compact Air Purifier is 10×6×11 inches in size.

These compact room air purifiers are exceptionally good in offices where pollution can come from the outside when doors are opened or chemically from the odors produced by perfumes, talc, lotions and other such products that are brought in by employees and clientele. They are also good to use in office storage closets and copy rooms where there may be dust and lint from the stored files and from copy paper.

There are many uses for the personal or compact air purifying systems because they fit in places where air contamination is prevalent but the large air purifier would either not fit nor would it be cost efficient. The personal or compact air purifying system is the answer to clean air in every part of your house, to keep you and your healthy healthy.

What to Look for in the Best Whole House Air Purifier The Whole House Air Purifier for Better Health

To help purify the air in your house, you have certain options such as: furnace filters, portable air purifiers and ionizers. However, there is nothing that is more effective than a whole house air purifier. Having a whole house purifier you will have clean air in the entire house from the upstairs bedrooms to the basement.

In a recent report from the Office of the Surgeon General and the Environmental Protection Agency (EPA) it was stated that indoor air pollution is as much as one hundred percent as much as the outdoor air pollution. Air pollution, without a doubt, is a serious problem. Since they say that we spend as much as ninety percent of out lives indoors, between home, work, shopping, etc., it is time we to take things into account and resolve the problem, especially that of the air in the house. The answer would be a whole house air purifier. Using a whole house air filtration system can easily eliminate large and small airbourne pollutants. Some of the most common indoor pollutants are dust, pet dander, pollen and dust mites. But, the biggest health hazards are pollutants such as bacteria and viruses. Did you know you can have over one million dust mites in one square inch of dust? Now that is something to think about.

With as many air purifiers as there are, on the market today, none of them are more effective than a whole house purifier. Unfortunately, with most ionizers and air purifiers of the portable type, they only purify a certain amount of square feet so you need more than one to do the whole house. The whole house purifier leans the air in the entire house making it a healthier place in which to breathe for the entire family, especially if there are any sufferers of asthma, emphysema, bronchitis or allergies.

A good whole house air purifier can be installed adjacent to your heating and cooling system and it will eliminate such pollutants as we mentioned earlier: dust, pet dander, dust mites, mold spores, pollen as well as bacteria and viruses, smoke and other pollutants.

When it comes to whole house air purifiers you should shop to find the best whole house purifier for your home, taking into consideration the square feet and how many windows and doors your house has. With a whole house air purifier on the job you and the members of your family will not longer have to suffer the irritation from airbourne pollutants.

 

Review of Dr Aeroguard SCPR700 Air Purifier for Home

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We live in some of the most polluted cities in the world. The quality of air in many cities is harmful and toxic which can lead to serious respiratory diseases. Nowadays, we tend to spend most of the time indoors, be it home or office. However, indoor air quality also requires some serious attention, as reports suggest indoor air pollution is more than outdoors. So, the air in our houses also requires some cleaning which makes air purifier for home and office a must.

Sensing the future in air purifiers, many companies have come up with their air purifier for home and office. Eureka Forbes is one of those companies and has introduced a solution to make the air pollution-free. The 8 kg Dr Aeroguard SCPR 700 is a compact machine. It can fit in any room, and will just take a corner of your room. It is easy to set up equipped with an air quality indicator and sensor.

Design

The Eureka Forbes Dr Aeroguard SCPR700 air purifier for home is nothing extraordinary. It has a modern look and compact design to fit in most of the homes and offices. The top of the air purifier has a large fan to filter the indoor air. The front of the air purifier is equipped with the touch control buttons to manage all the settings. These buttons control everything from the sleep function to fan speed settings and vita-ion modes.

At the bottom of the air purifier, the customer gets a 4 bar air quality indicator which detects the air quality in the room and turns red if it is really bad and harmful. The filter panels are on both the sides of the purifier which were a little insubstantial.

Key features

  • Equipped with an air quality sensor and indicator
  • Unique intelligent mode auto selects the best setting based on ambient air quality
  • 5 stage air flow control
  • Vita-ion revitalises the air with the perfect blend of silver ions, diatoms & vitamins

Drawbacks

  • The SCPR700 comes with a price tag of Rs 24990, which is a little expensive than the competitors
  • It is best suitable for small and medium sized rooms. If you have bigger rooms, then this is not the right air purifier for you
  • The air quality meter only displays if the air is clean or not. It does not show the PM2.5 level, to help you better understand the change in air quality before and after the air purifier
  • The fan of SCPR700 becomes really noisy if the speed level is raised to level 4 or 5.

Performance of Aeroguard Air Purifier for Home

This air purifier is best suitable for small rooms and does a decent job there. The Eureka Forbes air purifier for home and office has a 5 stage air flow control to adjust to the multiple stages of cleaning, starting from the Anti-dust filter to the deodorising filter. The anti-dust filter of this air purifier for home removes particulate matter such as dirt, dust, pet hair from the air. The anti-allergen filter removes airborne particles such as dust, fungal spores and pollen. The Dr. Aeroguard air purifier is energy efficient and consumes 45W when operational.

There is a multi-speed fan on the SCPR700 air purifier for home, ranging from 1 (slowest) to 5 (fastest). It is not much noisy and works perfectly if the speed is kept till level 2 or 3. But if the level is raised above that then the machine turns really noisy. It also sports an air quality indicator on the front of the air purifier. The red bar on the indicator suggests that the air quality is harmful whereas blue bar suggests that the air quality in the room is good. This indicator helps in concluding whether the room is purified or not.

Verdict

All in all, Dr. Aeroguard SCPR700 air purifier for home and office from Eureka Forbes is built to fight dust, pet hair and fungal spores. They are more effective in smaller rooms. If you have big rooms, this is not the right choice. There are many purifiers in this price range, which have better purification systems than this at a lesser cost.

Alen Air Purifier Review

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Below you will find our review of the Alen air purifier Model A350 . First off, this unit has already received high ratings from several organizations, including “Best Value” from Consumer Search. But, a cheap air purifier this is not. Adding to its reputation, the Alen A350 has also been rated 4 Stars by both Allergy Buyer’s Club and Amazon customers.

As you will discover further on, there are numerous benefits of owning an Alen air purifier.

Alen Air Purifier

Display  and Settings

The Alen A350 offers a digital display with simple, intuitive touch-button controls for your convenience. The unit has 4 speed settings (1=Low; 4=High) and uses a remote control, featuring a 12-hour, programmable, auto-off timer.

If you’re looking for a negative about this unit, the axiom “nothing is perfect” is as true for the Alen A350 as it is for everything else in life. The biggest “minus” is that setting the unit to High (4) results in some fan noise.

Although its noisy operation can be loud enough to keep someone from falling asleep at night, there is a work around solution if it seems too loud for you. Simply set the unit on High an hour or two before bedtime, then place it on a lower setting at bedtime.

Coverage

In contrast to a whole-home air purifier, the Alen A350 is a room air purifier. As such, its coverage extends up to about 800  sq. ft.; however, the unit’s optimal performance range is up to about half that, or 400 sq. ft. Depending on what fan speed you select (from 1-4), it achieves 4-6 air changes per hour.

(A note for allergy sufferers: ideally, you will want one unit for every 400 sq. ft. and should seek to achieve at least 6 air changes per hour; 4 changes per hour should be the minimum though.)

Efficient

For those who want an ozone safe air purifier with HEPA filtration, this unit features a manufacturer’s HEPA filter efficiency rating of up to 98%, meaning it is able to filter particles down to as small as .3 microns in size. As such an efficient unit, the Alen A350 will be effective against pollen, plant spores, pet dander and dust that may all be fluttering around inside your home and having a negative effect on your breathing.

This affordable HEPA filter efficiency unit also includes an LED filter change indicator light that lights up when it needs to be replaced (with continuous daily use, replacement intervals are about every 6 months).

Compact Design

With dimensions of 17.5″H x 18.5″W x 8″D, and weighing only 16 lbs., the Alen air purifier is perfect for single room applications, like a bedroom or an office. In fact, its space saving design is so compact, it can even be mounted on a wall, if desired.

Low Cost

There is a reason why the Alen A350 is the company’s best-selling air purifier – it is a great value for the money!

Among its numerous benefits, the unit offers very low operating costs with a three-in-one filter design: the Pre-filter/HEPA filter/carbon filter are all intertwined into a single piece. The advantages of this type of construction are that it is easy to maintain. The unit also uses low-cost replacement filters (about $60), so owning one of these units doesn’t drain your wallet.

Another cost-saving benefit is that the Alen air purifier is Energy Star rated and uses no more than 100 watts, so it is a very cheap air purifier to run day-in and day-out. (Actually, the manufacturer rates it at 100 watts; however, outside tests reveal the power consumption is even less, between 16-84 watts!)

Manufacturer and Warranty

The manufacturer, Alen Corporation, has a very good reputation in responding to its customers, probably because problems with the unit are so rare. Even so, the company offers a lifetime limited warranty on its air purifier, so if you ever experience a problem with your unit, simply call and ask for a replacement.

Summary

If you’re searching for a room air purifier, it’s hard to go wrong with the Alen A350 air purifier. It offers an excellent value compared to its cost and, while it is relatively inexpensive, it is not a cheap air purifier in the derogatory sense. In fact, if you search for yourself, you will discover that it will be hard to find a room-sized air purifier that combines the performance, quality, design and affordability of the Alen A350.

Finally, although we are an affiliate who gets paid from directing you to Amazon and others should you make a purchase, after reading the foregoing information, the wisdom of this decision is yours. Given the popularity and high ratings of the Alen A350 air purifier, however, you may find that buying one will help you breathe fresher, cleaner air regardless of where you buy!