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08-11-2011, 09:40 AM #1
1st foam house - seem to be undersized ?
Just started up 3 ton Rheem on open cell foam new construction. Foam on outside walls and roof rafters. Was 96 in house yesterday when I started unit, ran all night, checked at 7 am this morning, only pulled down to 83 inside.
This is giving me a bad feeling in my stomach if you know what I mean.
House is 2600 sq. ft. It also has been extremely hot here. 106 and 107 day after day. The design temp for this area is 97.
Question , how should I handle the ceiling load calc when the insulation is up on the roof rafters. Now the whole attic space is being cooled .
I may be ripping this system out and going larger.