What is the fluid in the loops?
There are two types of antifreeze solutions that are used: propylene glycol and methyl alcohol. These heat transferring solutions are mixed with water to form a solution for your specific climate and ground conditions. ECONAR’S GTF (geothermal heat transfer solution) is the most widely used and industry accepted. GTF is a mixture of methyl alcohol and water.
There are two types of antifreeze solutions that are used: propylene glycol and methyl alcohol. These heat transferring solutions are mixed with water to form a solution for your specific climate and ground conditions. ECONAR S GTF (geothermal heat transfer solution) is the most widely used and industry accepted. GTF is a mixture of methyl alcohol and water.