Quote:
Originally Posted by Fredster
Just checked....my thermostat is set at 75 and the humidity is 46%... house feels very cool.
Also have two ceiling fans running on low.
Found this....
“But if your air conditioner isn’t dehumidifying the air properly, it’s probably because of one of these issues:
Thermostat is set to “ON” instead of “AUTO”
Dirty evaporator coil
Leaky ductwork
Oversized air conditioning system
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Yes, one possibility I’ve seen before is an air leak in the return vent in the attic, caused by some repair guy bumping it or stepping on it. That will let humid, hot attic air be sucked into the system. The system may cool it down, but the air may need to be recirculated a few times to remove the extra moisture, yet with the leak, it doesn’t get the chance.
A more common reason is leaving doors open when the temperature is pleasantly cool, but the humidity is high, such as early morning. Having an outdoor humidity gauge is a good idea. Another common reason is taking long showers without adequate ventilation. I have Panasonic ultra quiet exhaust fans in my bathrooms that draw about 100 cubic feet per minute and use them for a half hour after a shower. This helps towels dry, too, and makes mold less likely. A third reason is boiling water on the stove. Cooking can steam up a house quite quickly. A fourth reason is using a humidifier at night. That can add a gallon of water to the air overnight!