wworden
New Member
I pressure tested my hydronic heating line at 60 psi. Over a little over an hour there was no change, but the next morning I was down about 1/2 psi. Now a week later I’m down to 50. I haven’t been able to find any leak using leak detecting solution (using Better Bubble). Unfortunately, there are some sweat fittings behind walls that I can’t test (these were previously pressure tested and passed, but not for more than an hour). So my question is, with a leak this slow, should I definitely be able to find it with soap? If not, is there something that works better I could try? I’d like to be 100% sure the leak isn’t at an accessible joint before I resort to cutting open walls.
Some context: line is a mix of sweated copper and pex-A (all buried joints are copper). Line is 3/4”, total length about 140 feet, 100 of which is pex. Line is not connected to boiler (or boiler valves, pressure tank, etc). All lines are inside, so no major temps changes, except maybe a bit in basement and poorly insulated exterior walls.
Thanks in advance for any advice you could give!
Some context: line is a mix of sweated copper and pex-A (all buried joints are copper). Line is 3/4”, total length about 140 feet, 100 of which is pex. Line is not connected to boiler (or boiler valves, pressure tank, etc). All lines are inside, so no major temps changes, except maybe a bit in basement and poorly insulated exterior walls.
Thanks in advance for any advice you could give!
