If you would like to protect your health from indoor air pollutants then buying a HEPA filter air cleaner is a practical first step.
Of course, that is easier said than done. Widespread concern over indoor air pollution has created a market filled with half measures, to be generous. The odor of cash bearing customers is the one odor most air purifiers are designed to handle best.
Are you concerned about the harm poor indoor air can do to your family? Do you believe you deserve true value for the money you invest in your family’s health? Before you entrust your family’s health to any air purifier shouldn’t you determine if it is really adequate for your needs?
What standards should you use when buying a HEPA filter air cleaner?
Certainly not price. Inferior products are often priced similarly to the best air purifiers simply to be perceived as being of the same caliber.
What is needed is a clear and simple home air purifier guide. The air purifier information you find throughout this site and the following guidelines will help you make an informed decision.
Features to look for when buying a HEPA filter air cleaner
Buy a HEPA filter air cleaner designed for years of minimal intervention and maintenance
Cheap air purifiers can often be much more costly in the long run. Think about it, how do they reduce the cost?
By building around a cheap motor that can’t meet the challenge of a large area HEPA filter. This means reducing the size of the filter and allowing bypassing of air around the filter to reduce backpressure and also to help cool the lesser quality motor.
What does this mean to you? Smaller filters require more often replacement due to loading and thus greater maintenance cost for you.
These cheap motors can be spotted chiefly by short warranty periods. Of course, they’ll fail as soon as the warranty expires!
You should look for air purifier manufacturers that are willing to stand behind they’re product five or even ten years as Allerair does.
Look for assertions that the motor uses closed, sealed motor windings. These give you clean operation without off gassing and burning smell, a problem owners of cheap air purifiers complain about.
Quarterly maintenance should only take a few seconds to replace or clean the prefilter. The life expectancy estimated for the HEPA filter should be three to five years depending on the environment where it is used, such as a smoking home versus a nonsmoking one.
Activated carbon filters likewise should last as long as possible, but this often depends on the total quantity of carbon in the filter and the circumstances of use.
Buy a HEPA filter air cleaner that can remove odors and harmful chemicals
Any HEPA filter air cleaner should also include a large activated carbon bed. No particulate filter, even HEPA, will remove gases and odors. Effective removal of gaseous toxins requires a large bed of activated carbon to ensure sufficient dwell time to trap the gases.
All high quality air cleaners offer many pounds of activated carbon to trap noxious gas and odors. The deep bed of activated carbon has the capacity to adsorb thousands of chemicals, gases and odors that can cause health problems for you and your family.
Most air cleaners have a only a thin layer of carbon sprayed on a mesh. Which is not enough to make any real difference. Its sole purpose is to enable cheap air purifiers to add another bullet point on their feature list. Many retail corporations in typical “me too” fashion have jumped on the air purification bandwagon by contracting with manufacturers to build snazzy looking but poor performing air purifiers.
Why buy an “air purifier” with only a few token ounces of carbon sprayed on a mesh? It’s only going to add to your filter replacement costs while providing no real benefit.
Also, consider a manufacturer that offers a wide variety of specialized blends of carbon and catalysts so you can customize the air purifier to your needs. For instance, a care facility where urine odors are common would require a different carbon blend than a beauty salon or welding shop.
Likewise, someone with MCS may need an air purifier specifically designed for MCS sufferers. Even then, some activated carbons may prove unacceptable due to source or added chemisorbers and catalysts. Allerair offers a test sample kit of carbons for an MCS sufferer to determine beforehand if a particular carbon blend is problematic.
Buy a HEPA filter air cleaner that is durable and safe with nontoxic construction
Would an “air purifier” company have your best interests in mind if their unit were itself a source of pollutants?
The best air purifiers have a solidly built housing with high quality gaskets and seals to ensure no leakage of air around the filter.
These internal components should be sealed with a glueless gasket that protects you from odors and volatile organic compounds that off gas from the glued rubber gaskets found in most other air cleaners. Look for an air purifier that the manufacturer assures you will not outgas VOCS from the sealants used.
A durable all metal housing will never expose you to off-gassing vapors like many cheap air purifiers that are all plastic in their construction. It also maximizes filtration of your air by providing optimal airflow through the filter as opposed to bypassing the filter because of allowing for a tight seal.
However, don’t dismiss the use of plastics entirely. Soft plastics are often a problem, both in out gassing VOCS and failing to maintain an airtight seal around the filter.
Hard ABS plastic such as is used in quality leader IQAir does maintain a firm seal with the filter and is not prone to giving off VOCS. In fact, IQAir is the only manufacturer to certify their purifiers as a whole to be 95% efficient. So plastics, the right kind of plastics, can be put to good use.
Also, as mentioned earlier, the motor can be a source of contaminants as it heats up. High quality, sealed bearings and motor windings, even unvarnished motor windings, will help eliminate burning smells coming from the motor.
One last point, no high quality air purifier attempts to mask its failure to perform with scented fragrance cartridges. The last thing anyone needs in their home is more petroleum based VOCS, no matter how sweet or “natural” they may smell.
Buy a HEPA filter air cleaner that doesn’t cost you a small fortune over the life of the purifier
Would you like to know the “dirty little secret” of the air purifier industry?
Filter replacement costs! A cheap air purifier can cost you a fortune in regular filter replacements. In fact, it is one of the biggest scams going: Sell a cheap air purifier to an unsuspecting consumer, then require filter replacements every three to six months that cost almost as much as the unit itself!
Unlike air cleaners that incorporate filter elements in a single cartridge, high quality air cleaners separate the HEPA and carbon filters to allow for individual replacement. You save the cost of replacing both filters when one is used.
You ultimately save due to the long life of your filters when buying high quality air cleaners. Your HEPA filter should last three to five years under normal home use and the carbon filter two to three years.
Only pre-filters require regular replacement every 3 months. Some of these can be vacuumed and reused.
This approach to filter life and replacement gives you the lowest long-term costs.
Speaking of filters, did you know many air purifiers are not living up to their owners’ expectations?
Why? Even though they are advertised and sold as HEPA filters they do not, as a unit, provide HEPA filtration. The HEPA designation only applies to theoretical efficiency.
In actual practice improper seating, poor construction, and cracks in the media due to cheap construction severely limit actual performance.
The best method used to manufacture HEPA media is what is known as “warm rolled”. This prevents cracks from forming in the HEPA media, cracks that allow pollutants into your air. Also, a HEPA filter air cleaner should use separators between the pleats of the filter to maintain proper spacing and allow for maximum airflow and top performance of the filter.
Buy a HEPA filter air cleaner that doesn’t harbor illness-causing germs
Because a HEPA filter air cleaner can trap microbes in the media they sometimes become a breeding ground for potentially harmful pathogens.
Allerair air purifiers include two anti-microbial wraps, one on either side of the carbon bed. This suppresses any microbe growth and ensures that your air purifier will always protect your health.
Other manufacturers’ products should likewise be evaluated as to whether they include some means of eliminating mold and bacteria growth in the filter media.
If it doesn’t specifically state how or even if microbe growth is prevented then you can be certain no protection is offered at all.