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2. How to keep your air conditioning from failing in ... - AOL

   www.aol.com/keep-air-conditioning-failing-brutal...

   Typically, a tech will blow the drain out with compressed air. But you can use a vacuum to suck it out the other end. Stangoni suggests using a vacuum both preventatively and as a fix after a clog ...

3. Heating, ventilation, and air conditioning - Wikipedia

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

   In the lower middle is the capacitor. Heating, ventilation, and air conditioning ( HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality.

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [ 2][ 3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [ 4] Heat pumps are similar in many ways to air conditioners ...

5. 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.

6. Should I get a home warranty? - AOL

   www.aol.com/finance/home-warranty-200001953.html

   The cost of a home warranty ranges from about $220 to $1,880 per year, according to HomeAdvisor. The plan can cost more if you want add-on coverage for areas like a guest house or swimming pool ...

7. 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]