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2. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   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. Ground-source heat pumps (GSHPs) – or geothermal heat pumps (GHP), as they are ...

3. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   t. e. A heat pump is a device that consumes work (or electricity) to transfer heat from a cold heat sink to a hot heat sink. Specifically, the heat pump transfers thermal energy using a refrigeration cycle, cooling the cool space and warming the warm space. [1] In cold weather, a heat pump can move heat from the cool outdoors to warm a house (e ...

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [2] [3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [4] Heat pumps are similar in many ways to air conditioners, but ...

5. Amazon Is Slashing Prices on Air Conditioners During Their ...

   www.aol.com/amazon-slashing-prices-air...

   Shop this week's Amazon sale on air conditioner units before the summer heat arrives. Some of our top expert-tested air conditioners are up to 25% off.

6. Why are gas prices going up again? - AOL

   www.aol.com/news/why-gas-prices-going-again...

   The price of gasoline now stands at $3.64 per gallon, according to AAA, much lower than last summer’s high of just over $5. But the cost to fill up a tank has been creeping upward from the $3.55 ...

7. British thermal unit - Wikipedia

   en.wikipedia.org/wiki/British_thermal_unit

   For natural gas price conversion 1,000 m 3 ≈ 36.9 million Btu and 1,000,000 Btu ≈ 27.1 m 3; BTU/h. The SI unit of power for heating and cooling systems is the watt. Btu per hour (Btu/h) is sometimes used in North America and the United Kingdom - the latter for air conditioning mainly, though "Btu/h" is sometimes abbreviated to just "Btu".