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2. Your Neighbor's Drippy A/C Unit: How to Fix It - AOL

   www.aol.com/news/2010-07-13-your-neighbors-noisy...

   Dear Apartment Guru, I live on the bottom floor of a brownstone. All three of the apartments above me have positioned their air conditioner window units directly above my back door. When I leave ...

3. Infiltration (HVAC) - Wikipedia

   en.wikipedia.org/wiki/Infiltration_(HVAC)

   Infiltration is the unintentional or accidental introduction of outside air into a building, typically through cracks in the building envelope and through use of doors for passage. [1] Infiltration is sometimes called air leakage. The leakage of room air out of a building, intentionally or not, is called exfiltration.

4. 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]

5. 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]

6. It's getting hot out: Here are the best settings for your air ...

   www.aol.com/getting-hot-best-settings-air...

   Air conditioners work to dehumidify the air, balancing out humidity levels that may cause harmful mold and mildew growth, according to HVAC. Old English sheepdog Sven cools off by a fan during the ...

7. 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 ...