For most families, it does not matter what season of the year that it is. It could be the dead of winter or the peak summer months. Even springtime or the fall season, replete with fallen leaves. Whatever time of the year that it is, there is at least one HVAC question that is bound to be asked more than once. That question is “what setting should we have the thermostat set at so that we have maximum comfort”. At the same time, we want a high indoor air quality, and a climate control that won’t break the bank. Some people think that you should set the temperature to your preferred climate control, and leave it there all the time. That is intentionally leaving your A/C on even when you are not home, and you will be using air conditioning to cool an empty house. The reasoning is that it takes more energy to heat a cold house or to cool down a hot house than it actually takes to maintain your preferred climate control. The second group believes that the heating or cooling should be reduced at the thermostat if you plan on being gone for a long time. That thinking reasons out that the energy you will be saving by lowering the thermostat for those times when the house is empty will offset any costs you might incur by trying to heat up a cold house or air condition a hot one. However, leaving your heating or cooling unit on all the time actually costs you more at the end of the month.