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Air conditioning is the cooling of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation, or disinfection that modifies the condition of air. An air conditioner (often referred to as AC or air con.) is an appliance, system, or machine designed to stabilise the air temperature and humidity within an area (used for cooling as well as heating depending on the air properties at a given time), typically using a refrigeration cycle but sometimes using evaporation, commonly for comfort cooling in buildings and motor vehicles. The concept of air conditioning is known to have been applied in Ancient Rome, where aqueduct water was circulated through the walls of certain houses to cool them. Similar techniques in medieval Persia involved the use of cisterns and wind towers to cool buildings during the hot season. Modern air conditioning emerged from advances in chemistry during the 19th century, and the first large-scale electrical air conditioning was invented and used in 1902 by Willis Haviland Carrier. From Wikipedia under the
GNU Free Documentation License From Yahoo Image Search: "Air Conditioning"  fiberglassconstructionnews.com vine Mon, 30 Aug 2010 16:41:06 GM Summer Time is here and boy it's hot and will get even hotter yet ! But before you crank up the A/C , here are some cooling. From Google Blog Search: "Air Conditioning"  youtube.com Thu, 13 Dec 2007 15:01:20 PST A home made air conditoner for a dorm room. youtube.com.  mojopages.com Thu, 31 Dec 2009 00:00:00 PST Read and write reviews on Oakdale air conditioning contractors. Get phone numbers, ratings, maps, directions and more for air conditioning ... mojopages.com.  ehow.com Sun, 03 Jan 2010 08:03:26 PST "Okay, I'm showing you the air conditioning vents inside the studio now. There's eight of them in this particular studio, and I just ... ehow.com. From Google Video Search: "Air Conditioning"  wsaz.com Mon, 30 Aug 2010 20:32:33 GMT+00:00 WSAZ-TV (WSAZ)-- A feron gas leak from an air conditioning unit ended the day early for kids at one South Charleston elementary school Monday. ... South Charleston School Evacuated State Journal  bankrate.com Mon, 30 Aug 2010 09:57:04 GMT+00:00 Bankrate.com Much, if not most, of a home's energy use goes toward heating, ventilating and air conditioning , or HVAC. Making sure that your HVAC system is as energy ...  news4jax.com Wed, 25 Aug 2010 15:19:49 GMT+00:00 Stolen From Church WJXT Jacksonville Lake City police said seven air conditioners were stolen from Parkview Baptist Church sometime between Sunday and Tuesday. Police were called to the church ... Seven Church Air Conditioners Stolen First Coast News From Google News Search: "Air Conditioning" Is the air-conditioning unit connected to electrical power supply? Q. That is, if your electricity was to get knocked out, does that mean your air-conditioning unit will stop working as well? Sorry if this sounds like a stupid question, but I really don't know, lol. Thanks in advance. No need to get snippy. I just want to know if it gets power from the same line that you hook up your fridge and TV and everything else to, or if it has a separate electrical line. Asked by Ruby - Sat Jul 21 15:09:17 2007 - - 8 Answers - 1 Comments A. I'll assume your referring to a central A/C system. Either way the answer is yes. A window unit is self contained but a central, or whole house, system has two separate power sources. A 220v circuit for the condensing unit (the outside unit) and a 110v circuit for the blower unit. This could be a separate air handler or the furnace blower itself. There's also a control circuit, usually 24v but it's transformer is part of the 110v circuit of the blower unit. If your electricity is "knocked out" you should shut your A/C unit off until power is restored to prevent damage to compressor. Answered by Ibeeware - Sat Jul 21 15:48:52 2007 Is there a portable air conditioning unit out there on the market? Q. Please excuse my ignorance, but is there a portable air conditioning unit (blows out cool air in a HOT ROOM) without being attached/fixed to the wall, as in carry it with you just plug it in to a wall socket and have it blow out cool air. I know this may seem like a dumb question, but a simple answer would be much appreciated. Thank you! Asked by Mahmoud Levenstein - Thu Jun 26 01:45:06 2008 - - 7 Answers - 0 Comments A. there are two units that are kind of like that, but not quite. one is called a swamp cooler. they evaporate water to absorb thermal energy in a room, but make the room more humid, and only really work in dry climates. however, they are relatively cheap to buy and use little energy. the other is a regular AC unit, but, this is not a window unit. they make one that is a free standing floor unit that can be pushed around and plugged in anywhere. however, the only downside is that there is a 3 or 4 Inch diameter hose that comes out of the back of the unit that must be run outside, through a window or a cat door or something. the unit is similar to window units in that it must move the heat from the room to the outside, but it does not have to… [cont.] Answered by cronos51101 - Thu Jun 26 02:08:25 2008 Is it possible for a home air conditioning unit to be the cause of its coils going bad?
Q. My Mom owns a Trane air conditioning unit and has had nothing but problems with it. She had the coil replaced on it a couple of years ago. Now a technician is telling her that the coils are bad again. They are telling her that there is something in the environment, her sprinkler system (sulfur), which is causing it to go bad. Does this explanation sound feasible? She uses well water for her sprinkler system but has had this sprinkler system for nearly 20 years. Before she had to get a new unit about 3 years ago she never had problems with the coil. Is it possible that the air conditioning unit itself could be causing the coils to go bad? i.e, a Freon leak or something. Asked by ultradevguru - Wed Oct 10 17:30:38 2007 - - 2 Answers - 0 Comments A. Absolutely NO. I am sorry to say that many people like to lie about stuff that you dont know about and EXTORT money from you.The refrigerant contains oil which moves through the system with the refrigerant and a leak in the coil is very rare unless hit with a lawnmower or such. Also a leak can be repaired but ther is no profit in it and it takes time.I am an HVACRR Tech, 15 years and have heqard it all. You are welcome to contact me and I would love to have the Tech. (supposed) explain it to me!!! I will give you my phone number to have him call. Answered by Kevin D - Wed Oct 10 18:55:49 2007 From Yahoo Answer Search: "Air Conditioning" From Wikiquote under the GNU Free Documentation License.
See also:
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Auto Air Basics
Understanding Your A/C System
Jbabs Do It Yourself A/C Repair