Can You Troubleshoot These Common HVAC Problems Like a Pro?Share:FacebookPinterestTwitterMailDuring winter, heat output is low on a heat pump. What is a likely cause?60%Next Correct Incorrect Ice buildup on the coil can block heat exchange. During winter, heat output is low on a heat pump. What is a likely cause? Faulty reversing valve Dirty air filter Iced outdoor coil Low refrigerant 60%
