GeothermalHow Does a Geothermal System Transfer Heat?

Like air-source heat pumps, a geothermal heating and cooling system is a great heating and cooling option to consider for those homeowners looking for year round comfort from just one system. However, many homeowners are unfamiliar with the way in which a geothermal system actually operates. While it shares much in common with more traditional air-source heat pumps, there is plenty which sets geothermal technology apart. Read on to learn more about the heat transfer process of a geothermal heating and cooling system. Remember, if you decide that geothermal heating and cooling is something you’d like to pursue, schedule your geothermal services in North Seattle with G&S Heating, Cooling & Electrical, Inc.

To understand how a geothermal system transfers heat, you must have an idea of the basic system design. The outdoor coil of a geothermal system is actually buried in the ground. This loop may be buried vertically or horizontally, and it may circulate a few different heat transfer liquids (refrigerant, an antifreeze solution, or even just water). The important thing to remember is that this loop and the fluid therein facilitate the heat transfer the system requires.

During the summer season, your geothermal system uses its indoor coil as an evaporator. It absorbs heat from the air in your home, redistributing cooled air throughout. This heat is then transferred to the fluid in the ground loop, and the earth acts as a heat sink. During the winter, the process is reversed. The solution in the ground loop absorbs heat from the earth itself. This heat is transferred to the refrigerant in the heat pump, which is further compressed, and is used to heat the house.

As complex as a geothermal system may be, you can see, it really functions on a simple principle: the transfer of heat into or out of a home, and into or out of the ground. When you allow our technicians to install and service your geothermal system, you can count on this transfer being completed successfully. Call today for further details.

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