So today is the coldest day every with with geothermal. -22 degrees air temp, wind chill -46. My WF Series 7 is maintain 70 deg inside the house without the use of Aux heat. We will see how she does with one more night of -25 degrees forecasted. I will say, a house makes a lot of weird noises when it gets that cold!
FCV2-GL Had I done some research before hand, I would have requested an FCV1 installed instead. When this flow center dies. it will be done!
Closed loop. 5 wells, 205' long, directional bored at 10-15 feet in depth (or at least are suppose to be, but I don't see any indication that they aren't)