[beepbeep]

Originally Posted by rockfan4

Man, that is the truth.
11 years on my system. Total nightmare when first installed. They kept coming out to flush and bleed the ground loop, it kept getting air in it. They finally had to bring a mini-excavator in and dig a hole next to the house and fix a joint that wasn't glued properly.

Of course, they hit the house with the excavator. Lucky the siding was new and easy to match.

Of course, they refilled the hole by putting the topsoil in the bottom, and finished with sand. I still have issues getting the grass to grow on that side of the house, even after getting rid of some of the sand and bringing in more topsoil.

My installation is also 11 years. Not ground loop but 170m borehole. I remember that plastic "elbow" joint between borehole pipes and pipe going to house was special item. It is one-time welded together by passing current through built in wire which then melts and fuses the elbow to pipes pipe. I suppose this is done to prevent leakage. A powerful pump in a drum was used to flush brine before connecting it to heat pump.

Glycol is not allowed here (poisonous) so our brine is 50/50 bioethanol/water.