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2. Should You Cover Your AC Unit In The Winter? Experts Explain

   www.aol.com/cover-ac-unit-winter-experts...

   Here's what they had to say about whether or not you should cover your ac unit in the winter, and how to properly maintain your system until you need it again. Meet the Experts

3. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   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 in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

4. 5 things you should (and should not) do to make your AC unit ...

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   With North Carolina heat breaking 90°F everyday this week, we looked for expert advice to keep our air conditioning units running in tip-top shape.

5. 15 products to help you stay cool in the extreme heat: 'A ...

   www.aol.com/lifestyle/products-to-help-you-stay...

   The Jisulife Handheld Mini Fan gives you that blast of cool air that you need — like when you get back in your car after shopping and it's turned into a roaster. This handy number also boasts 21 ...

6. Heating, ventilation, and air conditioning - Wikipedia

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

   Rooftop HVAC unit with view of fresh-air intake vent Ventilation duct with outlet diffuser vent. These are installed throughout a building to move air in or out of rooms. In the middle is a damper to open and close the vent to allow more or less air to enter the space.

7. Register (air and heating) - Wikipedia

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

   During winter months, for example, an air conditioning register can be closed to prevent cold air from being pulled from the room. This allows the hot air to mix more completely with the cold air in the room, improving the efficiency of the HVAC system. [7] (The return should be efficient enough to draw off the cooler air.) [10] [11]