A. Almost Never. The correct size of your HVAC system is based on running a computer generated load using measurements of your home’s interior space. If you put in an oversized furnace it will not run long enough to get to its steady sate efficiency. If you put in an oversized A/C unit it will not run long enough to remove humidity.

A. The cooler you set it in heating and the warmer in cooling the less energy you will use. Each person has their own temperature comfort range and we tell customers to find their optimum comfortable temperature and leave the thermostat set there for the occupied periods of the day.