Low-cost, DIY air purifiers are proving to be just as effective as expensive commercial units at protecting indoor spaces ...

HEPA AIR FILTER: Breathe cleaner air with ... HASSLE-FREE MAINTENANCE: Convenience made simple. Our Air Filter Replacements feature an easily removable pre-filter screen. Effortlessly clean ...

Tests conducted over 2,500 hours indicated that the CR Box worked as well as or even better than some of the most expensive ...

Expensive furnace filters such as HEPA filters are more effective at filtering ... filter you buy will have a bearing on how often you replace it. For example, cheaper disposable filters must ...

The PuroAir HEPA 14 Air Purifier covers a massive ... and they’re incredibly intuitive to use. The replacement filters are a little expensive, but we think it’s a price worth paying.

We also calculate the annual costs of replacement filters, based on the manufacturers’ recommendation for when to change them. (Keep in mind that prices may vary by retailer and that it may be ...