What Do Those Air Filter Ratings Other Than MERV Mean? by Mike Rampey | April 17, 2014April 17, 2014 The heating/cooling (HVAC) system in your Tulsa-area home requires relatively little maintenance, but this maintenance needs to be provided on a regular basis. Besides annual check-ups from a qualified HVAC […]Read More Filed Under: Air filters Tagged With: air filter efficiency– air filter performance rating (FPR)– air filter ratings– Broken Arrow– indoor air quality– microparticle performance rating (MPR)– Minimum Efficiency Reporting Value– Oklahoma– Tulsa