Boilers and cooling towers are expected for many commercial and industrial buildings. But they aren’t the only ways to provide proper environmental controls throughout the year. Commercial geothermal systems are types of powerful heat pumps that rely on the thermal energy drawn from the ground to deliver comfort to a facility or business. The heat pump either draws thermal energy from the ground to provide heat, or it changes direction to use the ground as a heat sink where it can deposit thermal energy removed from the building.
The secret of the process—that is, the reason it offers such reliable indoor temperatures while costing less to run than many other industrial/commercial HVAC systems—is that the geothermal loops access a relatively stable temperature in the earth. No matter the weather conditions above ground, the temperature in the earth below the frost line remains stable, around 10°C, which is more than enough to work for both heating and cooling requirements.