eduncan911
New Member
Isn't the water pressure supposed to remain the same if I shut off the water supply to the house?
Also note that the hot water is not heated yet. It's just filtered well water and I havent turned on the heater yet, so temp changes shouldn't be much of an issue with pressure readings (I think - it does warm up to 75°).
I've finished the plumbing for my hot water system in this foreclosure that had several busted baseboard hearing pipes. Most of the house plumbing seems fine on cold.
Now it's time for the hot water.
However, I've noticed that if I fill the hot water lines with water, bleed the air out of most facets, and let it sit at 56psi as measured at the heater inlet while turning off the hot water supply with a new ball valve, the water pressure drops from 56psi down to 40psi in about 12 hours.
I haven't checked the cold line (just noticed this pressure drop this morning). Normally i'd do an air pressure test in the system first and measure the drop overnight. However, the system still had a lot of water in it from previous work. So I didn't think an air test would be accurate.
So I'll check if the cold supply drops overnight tonight if I shut off the cold supply.
Yes, perhaps there's a leak in the hot lines - this house has had lots of freeze damage. However, I'm not see any leaks yet - and I've even cut out the shower valves and capped them off, and have most access to most lines and they visually seem fine.
Also note that the hot water is not heated yet. It's just filtered well water and I havent turned on the heater yet, so temp changes shouldn't be much of an issue with pressure readings (I think - it does warm up to 75°).
I've finished the plumbing for my hot water system in this foreclosure that had several busted baseboard hearing pipes. Most of the house plumbing seems fine on cold.
Now it's time for the hot water.
However, I've noticed that if I fill the hot water lines with water, bleed the air out of most facets, and let it sit at 56psi as measured at the heater inlet while turning off the hot water supply with a new ball valve, the water pressure drops from 56psi down to 40psi in about 12 hours.
I haven't checked the cold line (just noticed this pressure drop this morning). Normally i'd do an air pressure test in the system first and measure the drop overnight. However, the system still had a lot of water in it from previous work. So I didn't think an air test would be accurate.
So I'll check if the cold supply drops overnight tonight if I shut off the cold supply.
Yes, perhaps there's a leak in the hot lines - this house has had lots of freeze damage. However, I'm not see any leaks yet - and I've even cut out the shower valves and capped them off, and have most access to most lines and they visually seem fine.