Tune up and preventative maintenance on American standard furnace from 99'. Checked Honeywell humidifier which was not functioning opening due to a clogged saddle valve. Also replaced 1" Merv 12 filter: with a Merv 7 HVAC service and repair in and around Palatine, Wheeling, Rolling Meadows, Northbrook, Glenview, Schaumburg, Itasca, Wood Dale, Arlington Heights, Elk Grove Village, Des Plaines, Elgin, Mt.Prospect, Prospect Heights, Roselle, Hoffman Estates.
