Are there other things I can do to better my indoor air quality besides changing my filter regularly?

Yes. Upgrading older HVAC units to high-efficiency units, replacing dated home insulation with today’s higher-quality home insulation, and upgrading or repairing old windows all help to make your home more efficient and green. Ventilate often. Clean often. Discourage smoking indoors. Vacuum carpet often, especially if your carpet is new. Remove shoes upon entering your home. Ensure exhaust fans in bathrooms and kitchens work efficiently. Control humidity levels, as higher humidity levels increase presence biological contaminants. Immediately clean, disinfect and dry water damaged areas. Ensure fireplace flumes work correctly. Store chemicals in your garage or a wellventilated area out of reach of pets and children. Store as few as possible. Keep pets well groomed. Empty your cat’s littler boxes daily.