Your furnace's job is keeping you warm. Get to know the parts of a furnace so it will do that job better and last a lot ...

When the combustion air duct is connected directly to the return plenum for a furnace, the blower fan on the furnace pulls outdoor air in to the return plenum. To supply this air to the furnace room, ...

Q. This is written concerning a furnace that was installed in 1984, before the high efficiency furnaces were available. Several times during a 24-hour period, the furnace will go through five or more ...

The National Air Duct Cleaners Association (NADCA); also known as the HVAC Inspection, Cleaning, and Restoration Association; today announces the publication of a white paper on methods of inspecting ...

Q: Since I retired, I've noticed our gas forced air furnace takes 4-5 hours to return the house temperature 5 degrees from setback. There are 8 perimeter heat outlets (ranch home) plus 3 in the ...

If you need to purchase a gas-burning forced-air furnace but aren't sure how they work, here's what you need to know.

Q: More than 40 years ago, I read an article about a man who heated his small home by centralizing the source of heat into the crawl space. Each room had a floor register placed under a window, and ...