Furnace tune up and preventative maintenance on high efficiency Rheem downflow unit. Replaced aprilaire humidifier pad and filter. HVAC service and repair in Hoffman Estates, Palatine, Wheeling, Rolling Meadows, Northbrook, Glenview, Highland Park, Hinsdale, Winnetka, Wilmette, Barrington, Itasca, Schaumburg, Arlington Heights, Mt.Prospect, Prospect Heights and more.