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2. Don't wait until the next heat wave to buy an AC — this one ...

   www.aol.com/lifestyle/midea-air-conditioner-sale...

   This Midea window air conditioner is the perfect size for a bedroom, kitchen or even a smaller living room. Normally $175, it's now marked down on Walmart to just $144 , making it quite the steal ...

3. The Best Window Air Conditioners, According to ... - AOL

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

   Friedrich Chill Premier 10000 BTU Smart Window Air Conditioner CCF10A10A. Best for: Large rooms This model can cool a 400- to 500-square-foot space with ease thanks to its 10,000 BTUs and eight ...

4. In New York City, heat pumps that fit in apartment windows ...

   www.aol.com/news/york-city-heat-pumps-fit...

   For 27 years, the heat in Regina Fred’s Queens apartment building came from a noisy steam radiator that she couldn't control and sometimes didn't come on at all, leaving her shivering.

5. 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]

6. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   PTAC systems may be adapted to provide heating in cold weather, either directly by using an electric strip, gas, or other heaters, or by reversing the refrigerant flow to heat the interior and draw heat from the exterior air, converting the air conditioner into a heat pump. They may be installed in a wall opening with the help of a special ...

7. Seasonal energy efficiency ratio - Wikipedia

   en.wikipedia.org/wiki/Seasonal_energy_efficiency...

   In the United States, the efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER) which is defined by the Air Conditioning, Heating, and Refrigeration Institute, a trade association, in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [1]