Dew points getting above about 55 degrees is where things get a little too moist inside. 55 degrees is the point where if my house is at that point and the air conditioner hasn't run in the past 24 hours, I will have it run for 2 hours. I kept my house hot last summer and stayed in the lower levels so the indoor dewpoint and outdoor dew point got a chance to get above 55 degrees. We had dew points well over 70 degrees outside so it was very necessary to run the A/C on a daily basis around the June, July, August timeframe especially. Running the A/C for two hours brought the house down to a dew point under 50 degrees and it was comfortable at about that point. I basically set my thermostat for 2 of the coolest night hours as long as they were going to be above 60 degrees outside and that is the most efficient temperature that my A/C would run without any risk of freezing the coil and lines back to the condenser.
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