Heat Gain - Dlux

D lux_2

Some time a go there was a message about a house in the woods that had an over sized A/ C unit . Nobody took the trees in account for shade . Iam doing a Quote for a house in the woods and I dont want to screw it up . I am coming up with 5 tons and 20 yrs tells me its to much what do you do a bout the shade ? Im have Elite Rhvac thanks

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Floyd

5-ton

is alot unless it is a very big house, or it has a ton of SW exposed glass.
Also if the house is in a woods at the bottom of a hill you will get a downflo from the hill, especially as soon as the sun starts to go down. Actually any shade at all can make a big difference when calculating cooling loads.
I often err on the low side rather than the high side, you can reason with people if their place raises a few degrees, about eff. of the system and the better dehumidification on the "moderate" days. If you size strictly for the hottest days you will have a refrigerator cool on the moderate days.
JMHO Floyd