Combustion Depot stocks electronic air cleaners & air purifiers that optimize air streams by capturing particles. Air cleaners can operate with all gas, oil, electric forced warm air furnaces & AC systems. Air Purifiers use HEPA filters to provide antimicrobial treatment and safely removes 99.97% of airborne particles as small as 0.3 microns, including pollen, ragweed & other allergens, viruses, germs, dust mites, mold spores & odors.