Elcam,
You are exactly correct that oversizing an AC unit doesn't cost any more to cool than a correctly sized unit.
But ONLY if you are talking temperature . . . .
The condensation of latent heat requires that the unit actually run longer if the system is to remove humidity. That is the reason AC works - to remove moisture and as an added benefit, the air is cooler.
Steve
__________________
consulting on geothermal heating/cooling & rational energy use since 1990
|