Most air purifiers come with two different filters: a prefilter and a HEPA filter. Some even have a third filter. Each manufacturer's recommendations will vary in terms of cleaning the filters.

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at a low speed that was typically one setting above the lowest speed. Many models have ...

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at a low speed that was typically one setting above the lowest speed. Many models have ...