Comfort Control

Comfort Control Heating and Air Conditioning, Inc.

Heat Pumps

Defrost Cycle Timing

The defrost timer regulates how often your heat pump stops heating the inside of the home in order to clear its outside parts of any ice that may be forming. Although defrost cycles are necessary for the heat pump to operate at peak condition and efficiency, if the timer triggers the defrost cycles too often or for too long, you will notice adverse effects: a reduction in the heating of your home and increased heating costs due to the inefficiency of the system. Over time, an improperly calibrated defrost timer can shorten the compressor’s life.

Pledge: We time the heat pump’s defrost cycles to make sure they conform to specifications.

Reversing Valve

The direction of refrigerant flow in your heat pump determines whether your system puts out heating or cooling, according to how you’ve set the thermostat. The reversing valve functions as the master switch, in a sense, governing the direction of the flow and thus whether you will feel a change in temperature matching your expectations. If the reversing valve wears out, it can cause loss of heat – to the point of even further cooling an already cold room – and waste energy.

Pledge: We will verify that the reversing valve directs heat flow correctly and at peak efficiency.

Auxiliary Heat Strips

Under particularly cold conditions, the heat pump may struggle to raise the temperature to the level you have set in the thermostat. Auxiliary heat strips provide increased heating when the system requires a boost in capacity. Being a back-up contingency, the heat strips do not activate unless such acute conditions trigger them, but when they do come online you are thankful you have a second line of defense against the cold.

Pledge: We ensure that the auxiliary heat strips will activate when the system needs supplemental heating to keep you comfortable.