[gmdds]

As yet, no one has addressed the whole home dehumidifier aspect of your question.

We have a whole house dehumidifier. Our relative humidity is 40%, and our A/C is set on 81*...any cooler setting than that and we are cold. Yes, when ones A/C is on, it dehumidifies, while running. Why run the A/C, at 240 volts, just to get the moisture out of the air, when you can do that with a whole home dehumidifier, at 120 volts...way less energy, and way more comfort. Also, when we are out of town, the A/C is set on 87*, but the relative humidity is still 40%.

Go to You Tube and look for the This Old House feature on Whole Home Dehumidifiers.

Just another option...to each his own.