by Mark Hansberger on March 7, 2013March 7, 2013 When The Coils On A Heat Pump Freeze, Call For Emergency Service When outdoor coils on a heat pump freeze in winter, it usually means a professional service call is in order. Minor events such as leaves obstructing airflow to the outdoor coil can cause a freeze-up, […]Read More Filed Under: Heat Pumps Tagged With: Arizona– coil icing– defroster– Heat Pump Freeze– hvac contractor– Yuma