Clean and check and tune up on Rheem Ruud 96% 2 stage variable speed unit. Replaced aprilaire humidifier pad. And checked aprilaire high efficiency Merv 13 filter. HVAC service, quotes, repair, installs, mini-splits, indoor air quality and more in Palatine, Wheeling, Rolling Meadows, Itasca, Schaumburg, Arlington Heights, Elk Grove Village, Des Plaines, Wood Dale, Buffalo Grove, Elgin, Hoffman Estates, Roselle, Hoffman Estates, Addison, Lincolnshire Inverness, Deer Park and more