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JRMichler · 04-27-12, 08:54 PM

An energy efficient house needs very little cooling. Our house has a one ton AC. The house also has zero shade.

During a heat wave where the daytime temperature stayed above 100 deg F all day, the AC only ran 58% of the time to maintain 79 F inside. That was not enough running to fully control the indoor humidity.

More typical summer weather has daytime temperatures in the 80's with dewpoints in the 60's and low 70's. Typically, when the outside temperature rises into the 80's, it's several days before we turn on the AC. Keeping the indoor dewpoint down below 60 deg F requires a dehumidifier.

04-27-12, 08:54 PM	#26
JRMichler Apprentice EcoRenovator Join Date: Apr 2012 Location: Phillips, WI Posts: 109 Thanks: 10 Thanked 30 Times in 25 Posts	An energy efficient house needs very little cooling. Our house has a one ton AC. The house also has zero shade. During a heat wave where the daytime temperature stayed above 100 deg F all day, the AC only ran 58% of the time to maintain 79 F inside. That was not enough running to fully control the indoor humidity. More typical summer weather has daytime temperatures in the 80's with dewpoints in the 60's and low 70's. Typically, when the outside temperature rises into the 80's, it's several days before we turn on the AC. Keeping the indoor dewpoint down below 60 deg F requires a dehumidifier. Last edited by JRMichler; 04-27-12 at 08:57 PM..