Posted by George Marsh on May 10, 2014 at 05:03:25 from (192.182.50.76):
I feel better closing windows to keep pollen, humidity, mold, dirt out and running A/C all summer.
I know some elderly who think they are saving money by opening windows and only turning A/C when house is very hot. Their house smells like a moldy sock too.
So I decided to crunch some numbers. Please check my math, could be wrong. If you have a 2000 sq ft house with 8 ft wally, you have 16000 cubic ft of air. Say humidity is 100%. Turn on A/c and lower humidity to 50%. My calculations show you have to pull a gallon of humidity out taking 8000 BTU's. So every time you open windows and let moisture in you may not be saving all you think. My calculations don't include energy cost to cool drywall or pull moisture out of carpet, furniture or drywall.
It seems to me like A/C's never stop pulling moisture out, so a gallon is a consertive figure.
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