How is the length of the geothermal loop determined?

The length of the geothermal loop is determined primarily by factors such as soil type, depth, and system BTU capacity. The effectiveness of a geothermal system relies heavily on the thermal conductivity of the soil and how deep the loop must be buried to access stable ground temperatures. Different soil types can transfer heat differently, affecting how much surface area is needed to satisfactorily exchange heat between the loop and the ground.

Additionally, the system's BTU capacity indicates how much heating or cooling is needed. A system requiring more capacity will necessitate a longer loop to effectively transfer the appropriate amount of heat. The combination of these elements ensures that the geothermal system operates efficiently and meets the heating and cooling demands of the space it serves.