If your gas furnace keeps cycling on and then turning off within a minute or so, it might be the result of a dirty flame sensor. Most gas furnaces have a small sensor designed to shut off the furnace ...
The Family Handyman on MSN

Why Is My Furnace Blowing Cold Air?

Is your furnace blowing cold air? Here are some troubleshooting tips and simple DIY repairs for the most common causes for cold air from a furnace.
Brutally cold weather to start the week with temperatures in the single digits. Several Chicagoland homes have broken furnaces, which is putting HVAC companies working around the clock. One company ...
The AA-7000 series’ 3-D optical system is capable of producing maximum performance for both flame detection (Pb 0.015 ppm) and furnace detection (Pb 0.00005 ppm). This is achieved through optimal ...