Honeywell HPA300, Filter Queen Defender 4000, Holmes Hapf600, Germ FL4825 / FLT5000. Breathe Naturally is always looking to add new filters and brands with every new unit that hits the market. We strive to carry the most popular filters bringing savings to all of our loyal customers. Premium Quality HEPA and Carbon Filters. Merv 17 rated filters are used in cleanrooms and hospitals all around the world. Our filters cost less than the leading OEM brands and don't compromise on quality. Satisfaction Guaranteed or your money back. Perfect for people with respiratory issues, those who have seasonal allergies, pets, multiple household occupants, or anyone who just wants to breathe a better quality of air. These filters assist in capturing dirt, dander, pollen dust, smog, smoke, lint, mold spores, bacteria, virus carriers, and tons more airborne particles. Our extra thick carbon filters absorb smells and foul odors as well as stop large particles that would normally gum up your HEPA filter. This lengthens the lifespan of your HEPA filters giving you more bang for your buck. Dispose of the HEPA and carbon filters in the garbage when they need to be changed. We recommend changing HEPA filters every 4-6 months based on use and Carbon Filters every 1-2 months based on use, more sensitive respiratory systems will want to change your filters more often.