Whole Home Dehumidifier
Another option would be a whole home dehumidifier. It handles the humidity and leaves the AC to handle the cooling. Our thermostat at 80-82, as the relative humidity is 35-40%…anything below 80, and it is way too cool. That uses 110V to dehumidify vs the 220V on the AC. When we’re gone, we set the AC at 86, as the humidity is still at 35-40.
If you wanted to test this out, you could just use a smaller, portable dehumidifier in a central location of your house, set on 35-40%. Yes, it’s noisy, but give it about 2 days to equalize the houses humidity, then see what temp, on the thermostat, feels good. Would expect it to be a much higher setting than before, now with the dehumidified air.
The whole house unit is virtually quiet, as mine is in the attic. There is a good This Old House video on YouTube regarding whole house dehumidifiers.
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