what do you use for heat

Gryzynx said
Geothermal. Closed loop, 8X160' wells, -32C outside right now and the auxiliary electric heat is'nt even connected. Pump runs constantly, but I can maintain 22C in the house. That's -26F outside for 72F inside on about 5KW of power.

Same as you with 10x150' loops. And my system is running the same way. Still have to convince my friends it works :)

Grant