#1 question - how long do these loops last?
#2 - can they be repaired? I would think not?
I have a heat gun and experience. I have read many posts from you guys but I am not 100% sure of the best way to use the heat gun to test the system other than to look for cool spots.
I have not heard it here before, but I know that the pressure of goethermal loops will decrease over time if there is a leak. Has anyone used this for etsting of radiant loops?