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  2. Outdoor wood-fired boiler - Wikipedia

    en.wikipedia.org/wiki/Outdoor_wood-fired_boiler

    The outdoor wood boiler is a variant on the indoor wood, oil or gas boiler. An outdoor wood boiler or outdoor wood stove is a unit about 4-6 feet wide and around 10 feet long. It is made up of four main parts- the firebox, which can be either round or square, the water jacket, the heat exchanger, and the weather proof housing.

  3. 73 Brands That Are Still Made Right Here in the USA - AOL

    www.aol.com/73-brands-still-made-usa-123000180.html

    Since 1979, Vermont Castings has been making energy-conserving wood and gas stoves as well as smaller wood burning inserts from its foundries in Randolph and Bethel with varied, "furniture-quality ...

  4. Madeley Wood Company - Wikipedia

    en.wikipedia.org/wiki/Madeley_Wood_Company

    After Joseph Reynolds decided to concentrate on his bank, the Madeley Wood Company works passed to the Anstice family, one of whom had managed it, and their business became another Madeley Wood Company. The name Bedlam Furnaces may have originated with a painting by John Sell Cotman (1782–1842) who painted the furnace in 1803 and titled it ...

  5. Furnace (central heating) - Wikipedia

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

    A typical installation arrangement for high-efficiency furnaces includes a fresh air intake (supply) pipe that brings fresh air from outside the home to the furnace combustion unit. Normally the fresh combustion air is routed alongside the exhaust PVC during installation and the pipes exit through a sidewall of the home in the same location.

  6. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    Based on recent prices, ground-source heat pumps currently have lower operational costs than any other conventional heating source almost everywhere in the world. Natural gas is the only fuel with competitive operational costs, and only in a handful of countries where it is exceptionally cheap, or where electricity is exceptionally expensive ...

  7. Jetstream furnace - Wikipedia

    en.wikipedia.org/wiki/Jetstream_furnace

    All this resulted in total efficiencies as high as 85% but more commonly 75-80% and allowed partly dry unsplit wood to be burned just as effectively and cleanly. The particulate production was 100 times less than airtight stoves of the 1970s and 1980s and was less than representative oil fired furnaces.