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2. Forced-air gas - Wikipedia

   en.wikipedia.org/wiki/Forced-air_gas

   Older furnaces sometimes relied on gravity instead of a blower to circulate air. [1]Gas-fired forced-air furnaces have a burner in the furnace fueled by natural gas.A blower forces cold air through a heat exchanger and then through duct-work that distributes the hot air through the building. [2]

3. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as compared to a mid-efficiency forced-air or forced-draft furnace, is the capture of latent heat from the exhaust gases in the secondary heat exchanger.

4. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building. The heat can be transferred by convection, conduction, or radiation. Space heaters are used to heat single rooms and only consist of a single unit.

5. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. Couple found dead in blazing hot South Carolina home where ...

   www.aol.com/news/couple-found-dead-blazing-hot...

   An elderly couple found dead in their South Carolina home where the temperature was about 120 degrees Fahrenheit (49 degrees Celsius) had trouble with their furnace days before their deaths, their ...

7. 20 Christmas Casseroles Just Like Grandma Used to Make

   www.aol.com/20-christmas-casseroles-just-grandma...

   If you’re an extra-moist-stuffing type, bake it covered for the full 50 minutes; if you like some crispy bits on top, follow the recipe as written: bake covered for about 30 minutes, then ...