How does a contractor determine how much ground loop is required?
The purpose of the ground loop is to allow the heat transfer fluid to extract enough heat from the ground for efficient operation of the heat pump. A ground loop is designed to ensure that the heat transfer fluid will achieve a minimum entering fluid temperature when it enters the heat pump unit. Soil type and loop configuration determine the amount of ground loop required to ensure there is enough heat transfer to achieve this minimum entering fluid temperature for the system.
