The original purpose of air filters was to simply protect your heating and air conditioning system from collecting dirt and debris on the internal components. Many manufacturers began moving toward the production of specialty replacement air filters that would go beyond that and protect consumers as well by helping to clean the air that they breathe. Our indoor air can be many times more polluted than outdoor air. For some, this can make life miserable at times with seasonal allergies and asthma. Several MERV ratings are available to choose from depending on what you would like your filter to help you accomplish. MERV 8 for those with mild allergies up to MERV 13 for those suffering from severe allergies and excessive dust issues. Begin your search below! If you need help finding the best GeneralAire replacement whole house air filter, contact us for additional help!