GSHA Services, LTD replaced an aging furnace for a homeowner in Huntley, IL with a new Lennox Elite EL297V two-stage variable-speed gas furnace (model EL297UH070XV36B, 97% AFUE) and a Honeywell thermostat. We also installed an AprilAire 720 whole-home power humidifier to keep indoor air comfortable through the dry Illinois winter, then performed a complete Rotobrush air duct cleaning and a free dryer vent cleaning so the new high-efficiency furnace moves clean air from day one. The job included new PVC intake and exhaust venting, sheet-metal transitions, and condensate piping, with full start-up and combustion testing. Looking for furnace replacement, a whole-home humidifier, or air duct cleaning in Huntley, Lake in the Hills, Algonquin, or McHenry County? GSHA Services is a Lennox dealer based in nearby Woodstock.