I just had a york modulating furnace, and correctly sized york air conditioner installed in my master bedroom area. 18k btu load---1.5 ton air. I asked for their recommended t stat, and it is a honeywell programmable, but does not do humidity control/adjustable fan speed. Is it worth my effort to have them change it out for one that will be able to slow the fan speed if dehumidification is necessary? Or is that more needed if the unit is oversized?