Furnace maintenance and cleaning on Rheem high efficiency 96% variable speed furnace. Replaced aprilaire humidifier pad and checked aprilaire merv 11 filter. HVAC installs, repairs, tune ups, and indoor air quality solutions in Mt.Prospect, Wheeling, Rolling Meadows, Palatine, Northbrook, Glenview, Highland Park, Hinsdale , Winnetka , Wilmette, Schaumburg, Arlington Heights, Itasca, Wood Dale, Prospect Heights, Arlington Heights and more