A photo of several home air filters

How To Choose the Perfect Home Air Filter

Tony Lopez Expert Advice & News

NASA’s Goddard Space Flight Center has one of the largest clean rooms on the planet. An entire wall of the High Bay Clean Room, some 9,000 square feet, is covered with HEPA filters cleaning a million cubic feet of air a minute. The super-heavy-duty filters need replacing once every 40 years or so, and every cubic foot of the clean …