MERV ratings range from 1 to 16, with higher numbers indicating greater filtering efficiency. Developed by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE), these ratings help consumers gauge how well a filter can capture particles of various sizes ...

At 520 Indoor comfort we always chose quality over quantity. The name of the game is not to sell you on a new unit but to focus first on making our customer happy. There are too many companies out there that encourage their service techs to sell new units over repairing what the customer has ...