The horizontal ground loop collects solar energy stored close to the surface. If the bedrock is too deep, or if you do not wish to drill for other reasons, this alternative is a good choice. The loop is buried around one meter beneath the surface of the land and energy is extracted from the ground. The length of the loop depends on the house, the size of the heat pump and local ground conditions.
- Lower installation cost compared with vertical ground loop
- Can also be used to extract heat from lakes
- Ground loop maintains consistent temperature throughout the year
- Cooling is possible