You may see some frost forming on your heat pump, but there is no need to panic. Check back in a couple of hours and see if it’s still there. Your system should take care of the problem during its defrost cycle. However, if there is a significant amount of frost, ice, or snow on your system that does not go away, there is something wrong with your system. You may have a problem with your defrost controls, reversing valve, or improper refrigerant level. If this happens, it’s time to call Evolved Mechanical for a professional opinion.