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What We Look For In Air Purifier Reviews

Last updated April 7, 2022

This post may contain affiliate links.

Author avatar Danny Ashton

Danny as been writing about air purifiers for 10+ years. He is a major fan of home technology, which makes him the perfect person to test and evaluate products for HouseFresh

For each purifier that we review, we look at the following points:


1. Make sure that no gas leaks [this includes ozone]

2. Check that the filtration process is up to HEPA industrial standards.

3. Is the purifier well built or will it fall apart in a few weeks?

4. How easy will it be to fix yourself? Can you replace parts and filters easily?

5. Do the filters last long? How much do they cost?

6. How noisy is the machine when it’s running?

7. What level of trust do we have for the company? Do we trust the returns policy?

8. Is the price fair for what you receive?

9. Have customers made complaints about the purifier?

10. Is the design attractive?

Using this guideline we find that all our reviews are both fair and informative to the consumer.

Be careful with reviews that mention:


1. Really positive reviews that don’t mention any negative points

2. Small review with very little detail

3. Any site or magazine that only sells on purifier as they will be biased.

If you find any of the above points in your review then we think you should not trust it.

You should combine reading reviews from sites such as with looking at big retailers like and These big retailers allow their customers to provide reviews and will often cover most air purifiers on the market. You will find that many air purifiers have already been given star ratings at amazon and epinions.

Most sites and blogs will only review that popular purifiers from Oreck, Sharper image, Alen and Honeywell.

We will recommend that new customers should go with the popular brands as its easier to find reviews, parts and replacement filters with ease.

We recommend that you should always look at reviews that test the machine under conditions that you plan to use it.