Homemade air purifiers can filter air faster, making them an affordable alternative to more expensive commercial products.

Check your current filter. The easiest way to find the size you need is to look at the filter that's already inside of your ...

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at its highest speed. A model that scores well for dust removal should perform ...

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at its highest speed. A model that scores well for dust removal should perform ...

Although HEPA filters are more efficient at removing particles in ... across all particle sizes generally tracked with or exceeded those expected for a MERV-13 filter. Initial CADR varied from ...

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The effectiveness of a HEPA filter depends on how tightly bound the fibers are. This is usually expressed as a rating from MERV 12 to MERV 17. You want a filter that is at least MERV 13.