A draft hood used to effectively ventilate the area around older “gravity vent” furnaces. Because current furnaces lack this feature, the condition described below results in some unburned gas ...

Derived from the Latin word fornax, meaning oven, a furnace is a large heating appliance designed to evenly distribute heat throughout a building. Furnaces accomplish this by burning fuel internally ...

Your troubleshooting situation this month involves an 80% single stage gas furnace that has been in service approximately seven years. When you respond to the customer’s complaint of “no heat,” you ...