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2. Amazon Is Slashing Prices on Air Conditioners Right Now - AOL

   www.aol.com/lifestyle/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.

3. The 6 best-looking window air conditioners that look like decor

   www.aol.com/best-looking-window-air-conditioners...

   The Soleus Air Exclusive air conditioner installs like any other AC, but only takes up 3 inches of window space. This means that the part over the window sill is only 3 inches long, marking a ...

4. Tested and Approved: The Best Air Conditioners for Staving ...

   www.aol.com/lifestyle/best-air-conditioners...

   Most air conditioners have a fan mode, which both pushes the cool air provided by the a/c coil filled with refrigerant into the room and functions as a standalone fan when the a/c is off.

5. Heating, ventilation, and air conditioning - Wikipedia

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

   Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...

6. 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.

7. Packaged terminal air conditioner - Wikipedia

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

   Packaged terminal air conditioner installed in a residential apartment. 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 ...