How Geothermal Heating Works

A geothermal heat pump moves heat into or out of the earth to heat or cool your home. The system has three main components:

• Ground loop system
• Heat pump furnace unit
• Distribution system

Watch a video on how geothermal technology works (open new window).

The ground loop system of polyethylene pipes extract heat from soil beneath the frost line. In cooling mode, the pipes return heat to the earth. There are four basic ground loop configurations.

The heat pump furnace unit and distribution system are located inside your home. Heat is transferred from the ground loop system to the furnace unit. Once inside the furnace unit, the heat is moved to the distribution system to heat your home.

The system operates in reverse to cool your home.

Operation

Homeowners simply set the temperature with an electronic thermostat. The system will heat or cool to achieve the temperature.

Maintenance

Manitoba Hydro recommends inspecting/replacing the air filter monthly; routine checks to ensure supply and return air vents are clear; and an annual system check by qualified service professional. A certified contractor can inform you about additional operation and maintenance details of your system.