How much & what type of refrigerant is used?
Geothermal Heat Pumps are commonly shipped with a self-contained charge of R22, which is commonly used throughout North America. With the exception of direct expansion systems, the freon charge level is very low 6 to 10lbs per a 6-ton system. There is a new environmentally friendly refrigerant being used and offered by some manufacturers, which is called R410A. There are also other types of freon coming on the market but R410A is the most prevalent today. It is considered the new environmentally friendly answer, so far. R12 is a thing of the past already. R22 is generally available in most all states. Geothermal systems generally use approximately 1.1lbs or R22 per ton.
