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2. Fireplace insert - Wikipedia

   en.wikipedia.org/wiki/Fireplace_insert

   Wood burning fireplaces are ineffective in heating a home as more than 90% of the heated air is pulled up the chimney. [3] Using an EPA certified fireplace insert can improve heating efficiency by up to 50% while using less wood fuel, reduce creosote build-up in the chimney and lower smoke pollution inside and outside the home. [4]

3. Wood-burning stove - Wikipedia

   en.wikipedia.org/wiki/Wood-burning_stove

   Wolfgang Schroeter invented the first wood-burning stove with a cast iron frame and glass door. This allowed the user to see the fire burning inside the stove. [16] A fireplace insert converts a wood-burning fireplace to a wood-burning stove. A fireplace insert is a self-contained unit that rests inside the existing fireplace and chimney.

4. Furnace (central heating) - Wikipedia

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

   At the furnace, cool air passes into the furnace, usually through an air filter, through the blower, then through the heat exchanger of the furnace, whence it is blown throughout the building. One major advantage of this type of system is that it also enables easy installation of central air conditioning , simply by adding a cooling coil at the ...

5. Jetstream furnace - Wikipedia

   en.wikipedia.org/wiki/Jetstream_furnace

   The wood was loaded into a vertical tube which passed through the water jacket into a refractory lined combustion chamber. In this chamber the burning took place and was limited to the ends of the logs. The water jacket prevented the upper parts of the logs from burning so they would gravity feed as the log was consumed.

6. Forced-air - Wikipedia

   en.wikipedia.org/wiki/Forced-air

   Regardless of type, all air handlers consist of an air filter, blower, heat exchanger/element/coil, and various controls. Like any other kind of central heating system, thermostats are used to control forced air heating systems. Forced air heating is the type of central heating most commonly installed in North America. [1]

7. Pellet stove - Wikipedia

   en.wikipedia.org/wiki/Pellet_stove

   A modern pellet stove. A pellet stove is a stove that burns compressed wood or biomass pellets to create a source of heat for residential and sometimes industrial spaces. By steadily feeding fuel from a storage container (hopper) into a burn pot area, it produces a constant flame that requires little to no physical adjustments.