What’s the Best Way To Tell When a HEPA Filter Needs Replacing?

Most air purifier companies give ‘standard’ numbers for how long their HEPA filters last. Smart Air also provides it for our DIY, Sqair and Blast air purifiers.

However, we hate giving “standard” numbers on when to change your filter. That’s because the way people use the purifier, and the environments they’re used in varies greatly.

The best way to tell when your HEPA filter needs replacing is with a separate air quality monitor.

Combination-of-air-quality-monitors

When you first install your air purifier, your air quality monitor should show that your purifier is doing a good job of cleaning your air.

air quality monitor indicate air purifier working well

However, after some time, the filter will become clogged. This will mean your air purifier is unable to keep the air clean and the air quality monitor will start showing higher numbers. AT this point, it may be time to replace your filter.

air quality monitor show hepa filter needs replacing


Get Your Free Guide to Breathing Safe

Join the thousand keeping up on the latest research & knowledge on how to breathe safe. Sign up now and receive a free guide to breathing safe!

Was this article useful?20

Leave a Comment

Smart Air is a social enterprise that creates simple, no-nonsense air purifier and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.