Our recommended best setting for a heat pump in the winter is to set it at 55 degrees Fahrenheit. This can save on energy as well as money for your utility bill as you don't need to heat your air as severely. Setting the heating at a lower temperature also prevents your home from feeling too cold or too warm. This can make a significant difference for any family members with health problems such as allergies or asthma issues. Please remember that this isn't something you should practice if you live somewhere where the temperature doesn't dip below 50 degrees Fahrenheit during winter months. In that case, just set it around the high 60's or low 70's.