When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Friedrich Air Conditioning - Wikipedia

   en.wikipedia.org/wiki/Friedrich_Air_Conditioning

   TwinTemp: Built in both "QuietMaster" and Q-Star configurations, these units provided both heating and cooling settings in one unit. They were replaced by the electric heat and heat pump Kühl/Kühl Q models beginning in 2010. Casement: Produced by Friedrich from 1965 to the early 2000s with few changes, these room air conditioners

3. Packaged terminal air conditioner - Wikipedia

   en.wikipedia.org/wiki/Packaged_terminal_air...

   A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air conditioning system intended to be mounted through a wall. [1] The first practical semi-portable air conditioning unit invented by engineers at Chrysler Motors. It entered the market in 1935, and was designed to fit under a window like many modern PTACs. [2]

4. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   Saddle-style window mounted heat pump 3D sketch. Window mounted heat pumps run on standard 120v AC outlets and provide heating, cooling, and humidity control. They are more efficient with lower noise levels, condensation management, and a smaller footprint than window mounted air conditioners that just do cooling. [39]

5. 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.

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. Underfloor heating - Wikipedia

   en.wikipedia.org/wiki/Underfloor_heating

   Heat pumps and chillers powered by: Electricity; Natural gas; Geothermal heat pump; Underfloor heating is particularly suitable when the energy source is a heat pump, because underfloor heating uses lower water temperatures than systems using radiators, which improves the efficiency of the heat pump. [28]