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Old 06-22-14, 10:17 AM   #6
Servicetech
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Quote:
Originally Posted by doug30293 View Post
If your heat pump needs replacement, install one significantly smaller than what your HVAC installer recommends. It will be more efficient and last longer if it runs continuously during the hottest days and doesn't keep the house at a constant temperature.

Also, don't install the air handler, or any duct work, in the attic.

HVAC installers always oversize the equipment to avoid callbacks from customers who insist the house stay at 68F in the middle of August. Don't be that customer.
HVAC systems can sometimes be HALF the 500sqft per ton that HVAC contractors typically recommend, especially if kept out of the attic!! If you do install a smaller system it MUST work correctly, and you must get the rated capacity from it. Most systems typically run at about 2/3 rated capacity, which will keep the customer cool if the system is 50% larger than needed....

Window AC's aren't the only ones that benefit from running in the shade, central AC condensers run lower head pressures also. Locate central AC consender on East (will be shaded during afternoon heat) or North side of house if possible. West is the worst side to install AC unit.

Last edited by Servicetech; 06-22-14 at 10:20 AM..
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