How Do Geothermal Systems Work?

Look at a cup of hot liquid on a cold day. The steam is heat transferring from the warm drink to the colder air. It’s a fact of nature that heat moves to a cooler area. In winter, a system of underground loops filled with cold liquid draws the heat from the ground. The heat is enhanced and distributed throughout your home.

In summer, this process is reversed to draw excess heat from your home. Since the ground or ground water temperature is lower than the indoor temperature, heat naturally transfers via the underground loop from your home to the earth. It’s an environmentally sound, highly efficient way to achieve comfort all year long.

For closed loop systems, water or an anti-freeze solution is circulated through plastic pipes buried beneath the earth’s surface. During the winter, the fluid collects heat from the earth and carries it through the system and into the building. During the summer, the system reverses itself to cool the building by pulling heat from the building, carrying it through the system and placing it in the ground. This process creates free hot water in the summer and delivers substantial hot water savings in the winter.

Geothermal Type: Open Loop

Open loop geothermal systems operate on the same principle as closed loop systems and can be installed where an adequate supply of suitable water is available and open discharge is feasible.


Loops can be installed three ways: horizontally, vertically, or in a pond/lake. The type chosen will depend on the available land area and the soil and rock type at the installation site. These factors will help determine the most economical choice for installation for the ground loop.

Geothermal Type: Horizontal LoopGeothermal Type: Vertical LoopGeothermal Type: Pond Loop


Contact us today to see if Geothermal is the right application for your heating and cooling needs.