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2. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   The benefits of ductless air conditioning systems include easy installation, no ductwork, greater zonal control, flexibility of control, and quiet operation. [34] In space conditioning, the duct losses can account for 30% of energy consumption. [ 35 ]

3. Variable refrigerant flow - Wikipedia

   en.wikipedia.org/wiki/Variable_refrigerant_flow

   Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller-based systems.

4. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   The system normally has eight main components: a compressor, a reservoir, a reversing valve which selects between heating and cooling mode, two thermal expansion valves (one used when in heating mode and the other when used in cooling mode) and two heat exchangers, one associated with the external heat source/sink and the other with the ...

5. 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]

6. Mitsubishi Electric Trane HVAC - Wikipedia

   en.wikipedia.org/wiki/Mitsubishi_Electric_Trane_HVAC

   METUS markets, sells and distributes heating and air-conditioning systems in the United States and Latin America. [3] References

7. Best $2,000 You Can Spend To Improve Your Home Value in 2025

   www.aol.com/finance/best-2-000-spend-improve...

   While AC units and installation can certainly run well past $2,000, ductless mini-split systems, which work for homes that don’t have ductwork, can begin around $2,000, according to All Air ...