SpiroPure pleated AC & Furnace Geothermal air filters are made in the USA and are the perfect choice for most standard residential and light commercial air conditioner and furnace units. MERV 11 rated filters are a great efficiency upgrade for homes that contain pets, cigarettes, or other unwanted particles. Please measure your existing furnace filter before ordering to ensure that this size will be compatible with your AC & furnace system. High Quality Performance Our pleated air filter replacements offer high quality filtration performance without the high costs. Breathe easier as your furnace filter removes particles such as hair, carpet fiber, hair spray, and more from the air in your home. Plus, with a MERV 11 rated filter with an efficiency of 85% or better, you are choosing the best option for light commercial applications & homes with a need for enhanced filtration, such as those with pets. SpiroPure geothermal furnace filters are offered in value packs, helping you to save more! Value packs mean you get a high quality product with great material quality, efficiency, and filtration performance without taking a hit to your wallet. TOP BENEFITS OF SPIROPURE GEOTHERMAL AIR FILTERS LONG LASTING DURABILITYIMPROVED AIR QUALITYEASY INSTALLATIONHIGH QUALITY AFFORDABILITYMADE IN THE USA AFFORDABLE QUALITY Find a value pack of high quality replacement furnace geothermal filters from SpiroPure. Our pleated air filters are sold in packs in order to save you even more without cutting corners on material quality, efficiency, or filtration performance. EFFICIENT FILTRATION With an efficiency of 85% or better, MERV 11 filters can remove particles as small as 1–3 microns, which includes unwanted particles such as hair, carpet fiber, and more. EASY TO INSTALL We recommend replacing your furnace filter every 3 to 4 months for maximum efficiency and system life. A dirty filter restricts airflow, which can put too much strain on the system. The leading cause for HVAC system failure is a dirty air filter. SpiroGuard Air Filters SpiroPure MERV 11 SpiroGuard furnace filters guard your home against common indoor air pollutants. Air passing through our pleated filter media is cleared of hair, carpet fiber, and much more. MERV 11 Rating MERV 11 rated filters are the perfect efficiency upgrade for homes that contain pets, cigarettes, or other additional pollutants. The 85% or better efficiency of particles sized 3 to 10 microns, with the added 65% to 89% of particles sized 1 to 3 microns. Made in the USA All SpiroPure geothermal air filters are Made in the USA and offer a high quality replacement air filter option for your air conditioner and/or furnace unit without the high cost. High Performance With an efficiency of 85% or better, these filters are usually the best option for residential homes & light commercial applications that require enhanced filtration, such as those that have pets.