Triple HVAC tune up and preventative maintenance on Rheem and Ruud 2 stage variable speed furnaces. Replaced aprilaire Merv 11 filters and humidifier panels. Set venstar thermostat to circulate air throughout home, improving indoor air quality. HVAC service, repairs, installs, indoor air quality solutions in Highland Park, Glenview, Barrington, Northbrook, Hoffman Estates, Palatine, Wheeling, Rolling Meadows, Itasca, Schaumburg, Arlington Heights, Elk Grove Village, Des Plaines, Wood Dale & more