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 ...

The 5-inch-thick Lennox Healthy Climate CarbonClean 16 lasts about 12 months, while the 1-inch Filtrete MPR 1900 needs replacing every three months or so. You can also find washable filters ...