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Here are two excellent sites with engineering/scientific-based analysis of how to properly size your A/C units. Many people use "rules of thumb" that result in vastly overpowered systems, either because of lack of knowing better, or contractors intentionally trying to increase the price of the sale.

http://www.fsec.ucf.edu/en/publications/html/FSEC-PF-289-95/

http://www.proctoreng.com/articles/bigger.html

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Q: What size central air conditioning unit is required to cool a 2800 square foot house?
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How many ton central air conditioning do I need for a 2050 square foot home in south Florida?

You need a 5 ton unit for that size house.


Can you rent out a house without air conditioning?

Check your local codes to be sure, but in general, air conditioning is not required in order to rent a house.


What exactly is central air conditioning I know I have AC, but what makes it central?

Central air conditioning is an air conditioning system with a central unit that distributes air to the rest of the house through vents. Some people have air conditioning units that are separate for each room, but most houses today have a centralized unit, usually located outside the home, which pumps air to each part of the house through the ventilation system. That is what is referred to as Central Air conditioning, because there is just one centralized unit cooling the entire place, as opposed to many autonomous units cooling each room.


Does central heating work better than an air condition unit?

Depending on what situation it is. If it is a small house central heating works better, if it is a big house then air conditioning works better.


What uses the most electricity in a house?

"Air Conditioning uses the most electricity, followed by the refrigerator" completely wrong. Your hot water heater does


Why would a central air conditioning unit not blow any air in the house?

indoor air fan is not functioning. for that, there are many possibilities.


How big of an air conditioning system does a 4000 square foot house need?

To conserve energy I would buy one conditioning unit but add more ducts through out the house. It would save energy and it would save more money on installation.


Can you install a central air conditioner in an existing house?

Yes, a skilled professional would be able to install the proper duct work for central air conditioning in your existing home. Check in your area for a reputible business.


Does central air conditioning bring in flying bugs such as mosquitoes or gnats from the outside while blowing into the house?

No. They can't get through the enclosed system and inside the house there is a filter. When a filter is changed all that is seen is dust.


Is it possible to install a central air conditioner in an old Victorian house?

Yes it may be possible to install central air conditioning in an old Victorian house but it might be difficult and expensive. Proper insulation must be in place as well as ducts must be installed and the actual HVAC unit.


Is it worth installing central air conditioning in a house when it comes to resale?

absolutely. it wont increast the resale value a whole lot but it will appeal to far more buyers. ive lost sales before bc of no central heat and air


What year did the White House get air conditioning?

it was broght to the white house in -9012