The only way to determine precise air purifier ratings – ones that shows the true effectiveness – one must incorporate the following:
1. Particle Tests – to determine ability to remove particles like dust and pollen
2. Decibel tests – to determine the quiet levels of the machine
3. Smoke tests – to determine ability to remove cigarette, fireplace and cooking smoke
4. Bacteria, and mold tests as available
5. Independent tests from outside sources
6. Consumer feedback
7. Hands-on dissection (video)
8. Replacement filter costs – to determine the value and economy of an air purifier over time
I’ve tried to include as much of this data as possible on this site, including particle tests that we perform in real world situations.
Complete List Of Air Purifiers Reviewed On This Site
For the air purifier brands listed on the left menu (search our site for others not listed) you’ll find a condensed version of the information above with comments, videos, and Q&A.
Our overall air purifier ratings system is calculated by:
1. Technologies Included
2. Particle Removal (Allergens, Dust)
3. Immune System Threats (Germs, Virus, etc.)
4. Gas Removal (Odor, Chemicals, Smoke)
5. Longevity/Quality
6. Noise Levels
7. Ease of Use
8. Warranty
9. Customer Service/Reputation (reviews)
10. Price Value
At the end you’ll find Questions and Answers from readers and from online reviews as available.
Air Purifier Ratings – Comprehensive Comparison Chart
Why Companies Don’t Include Particle Tests
I don’t know why, except I have a hunch why they don’t. If you can sell someone an air purifier without showing particle tests then why bother. Especially if your air purifier does not perform particularly (pun unintended) well.
For all my reviews I try to include a particle test because it’s the only way to really know a machine removes dust and pollen. It shows that air purifiers really work. The only drawback is that it doesn’t show how it does on germs, viruses and gases. There are other tests for those. But if pollen allergies are your problem it must test a particle test.
Also – Particle tests need to be done two ways: 1) on the outflow of the air purifier to determine if it is removing all molecules and 2) from across the room over a 1-2 hour period to determine if the air purifier is effective at lowering the numbers to near zero.
Conclusion
I hope to offer you the most comprehensive reviews available online. You’ll find Comparison Charts and a List of all air purifiers reviewed on this site via the links below…