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  2. Reversing valve - Wikipedia

    en.wikipedia.org/wiki/Reversing_valve

    Reversing valves are built into the heat pump by the manufacturer, and must be replaced by an HVAC technician if they fail. Since the valve is an integral part of the sealed refrigerant circuit, proper procedures for recovering and then later refilling the refrigerant must be followed, to prevent its loss into the atmosphere.

  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. Is your air conditioner making you sick? Experts unpack 'air ...

    www.aol.com/lifestyle/air-conditioner-making...

    The cool air from AC units helps balance a room’s humidity to prevent mold growth from happening. Sometimes, mold can be kept dormant for years until wet, damp conditions allow it to begin to ...

  5. No air conditioner? Here's how to cool down your home

    www.aol.com/lifestyle/no-air-conditioner-heres...

    SEATTLE (Q13FOX) — An air conditioning unit just might be the easiest way to cool down your home (many local retailers, including The Home Depot, recently received new shipments in recent days ...

  6. Register (air and heating) - Wikipedia

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

    However, the hot air must be pushed from the register with enough force (or "throw") so that it will cross the room and reach the window. If there is too little throw, the hot air will stop moving partway across the room, the cold air from the window will not be heated (creating the feeling of a cool draft), and air circulation will suffer. [9]

  7. Don’t Lose Your Cool—Here Are the Best Window Air ...

    www.aol.com/dont-lose-cool-best-window-193000344...

    LW6017R Window Air Conditioner. This high-performance, 6,000-BTU LG window air conditioner is designed to cool medium spaces quickly, ideal for rooms up to 10 by 25 feet.