4 Commonly Asked Questions About Heat Pumps

The heat pump is an important device that is placed outside residential and commercial buildings. We have a vague and general idea about heat pumps, but for most of us, heat pumps are a mystery whose exact mode of operation and purpose is unknown to us. In this article, we demystify this complicated device by answering these commonly asked questions in the simplest terms.

1. What is a Heat Pump?

  • A heat pump is one of the components of heating and cooling systems. It is a standalone device that utilizes electricity and works on refrigeration technology. Through the transfer of heat, it serves dual purposes i.e. cooling the building during high temperatures and providing heat during summers. During winters, the heat pump captures the outdoor heat and supplies it inside the building. During summers, it does the reverse, i.e. captures indoor heat and transfers it outside to keep your home cool.

Heat pumps provide comfort all year round. They serve the dual purpose of heating and cooling the home, hence most buildings don’t require separate systems for temperature regulation. In colder regions where more heat is needed, an electric heat strip is added to the indoor fan coil of the heat pump. This leads to increased heat generation by the pump.

2. What Are The Primary Components of Heat Pump?

A typical heat pump system comprises the following components:

  • An outdoor unit that acts on the principle of refrigeration. It works as a condenser when cool air is needed and as an evaporator when hot air is in demand.

  • An indoor unit that takes the air from the outdoor unit and moves it through the building. The indoor unit is equipped with a coil.

  • A liquid refrigerant absorbs heat when the pump is acting as a condenser.

  • The refrigerant is powered by a compressor that pressurizes the refrigerant.

  • The reversing valve enables the pump to switch between heating and cooling modes.

  • The heat pump is equipped with an expansion valve that regulates the flow of refrigerants.

3. What is The Working Mechanism of A Heat Pump?

  • Heat pumps work by redistributing and moving heat from one place to the other. Unlike furnaces, they don’t create heat themselves. During winters, the outdoor unit takes the heat from the air or ground and transfers it to the refrigerant. The liquid refrigerant transfers the heat by circulating between the outdoor compressor and the indoor fan coil unit.

During summers, the pump cools down the temperature indoors. It does so by absorbing the heat indoors, transferring it to the refrigerant, and expelling it through the outdoor unit. Repeated cycles of heat capture and expulsion reduce the temperature indoors.

4. What Are The Different Types of Heat Pumps?

The following types of heat pumps are commonly used in commercial and residential buildings:

  • Air source

  • Ground source

Air source heat pumps are common for single or double-story residential buildings. They are wall-mounted and work by transferring heat between indoor and outdoor air.

  • Ground source heat pumps are commonly installed for high-rise buildings. Also known as geothermal pumps, they source their heat from the ground outside the building. Due to the consistency of the ground’s temperature throughout the year, these pumps are more efficient and have a lower operating cost than air-source pumps.

For the installation of new heat pumps and for the repair and replacement of faulty heat pumps, contact Heritage Air Services. Our skilled technicians are well equipped to fix all technical issues. Call us at 817 330 4156. We offer services in Waxahachie, Texas, and nearby areas.


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