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  2. Johnson Controls - Wikipedia

    en.wikipedia.org/wiki/Johnson_Controls

    The company began as a division of the Coleman Company in 1958 and was acquired by Evcon in 1990, which in turn was acquired by Johnson Controls in 1996. [70] [71] [72] Of the twelve largest American furnace brand names represented at Gas Furnace Guide, the Coleman brand received an average ranking of 3.7 out of 5 stars. [73]

  3. Coleman (brand) - Wikipedia

    en.wikipedia.org/wiki/Coleman_(brand)

    Coleman gas lamps were provided to play the first night football game west of the Mississippi River. [2] In 1996, the company acquired the French Campingaz. In September 2004, Jarden acquired American Household, which was the privately-held parent company of Coleman as well as other brands like Sunbeam Products, for $745.6 million in cash. [3] [4]

  4. G.I. pocket stove - Wikipedia

    en.wikipedia.org/wiki/G.I._pocket_stove

    The G.I. pocket stove is 8 + 1 ⁄ 2 inches (220 mm) high and 4 + 1 ⁄ 2 inches (110 mm) in diameter, and weighs about 3 pounds (1.4 kg). It was designed to burn either leaded or unleaded automobile gasoline (sometimes referred to as "white gasoline" or pure gasoline, without lead or additives).

  5. Register (air and heating) - Wikipedia

    en.wikipedia.org/wiki/Register_(air_and_heating)

    A floor register. A register is a grille with moving parts, capable of being opened and closed and the air flow directed, which is part of a building's heating, ventilation, and air conditioning (HVAC) system. The placement and size of registers is critical to HVAC efficiency. Register dampers are also important, and can serve a safety function.

  6. Heating seasonal performance factor - Wikipedia

    en.wikipedia.org/wiki/Heating_seasonal...

    Heating seasonal performance factor (HSPF) is a term used in the heating and cooling industry. HSPF is specifically used to measure the efficiency of air source heat pumps. HSPF is defined as the ratio of heat output (measured in BTUs) over the heating season to electricity used (measured in watt-hours). [1] [2] It therefore has units of BTU ...

  7. Direct exchange geothermal heat pump - Wikipedia

    en.wikipedia.org/wiki/Direct_exchange_geothermal...

    DX system being drilled in the 1980s. A direct exchange (DX) geothermal heat pump is a type of ground source heat pump in which refrigerant circulates through copper tubing placed in the ground unlike other ground source heat pumps where refrigerant is restricted to the heat pump itself with a secondary loop in the ground filled with a mixture of water and anti-freeze.

  8. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    A heat pump in combination with heat and cold storage. A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons.

  9. Coefficient of performance - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_performance

    The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [ 1 ] [ 2 ] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.