From Our Editors
The master HVAC technicians at Acme Heating & Air Conditioning examine and adjust furnaces to ensure they meet the standards for Questar Gas' Green Sticker Program. Since natural-gas formulas change based on factors such as altitude, gas-burning appliances need to be updated and taught to safely consume au courant fuel cocktails or risk emitting malevolent levels of carbon monoxide. A skilled tech inspects, and possibly resizes, the furnace's burner hole and calibrates the manifold pressure to promote proper mingling of air and gas. When all is right with the system, the natural gas burns away completely leaving no remnants to roam the house planting whoopee cushions under the welcome mat.