Originally Posted by jasonalonzo
Is your heater brand new or has been stocked for long time or haven't been used for long? The problems can be defective heater valve, defective blower motor, weaker water pump and an open thermostat. Furnaces that are electronic based like from Air cond. Bell canyon
have heating coils that can be clooged or defective blower motor.
It is a window unit and we use the ac in summer and heat in winter. It blows cold air on heat setting. Its about 5 yrs old - kenmore model.