I'm going crazy & need some professional advice from someone who doesn't stand to profit.
After turning off water, our PSI drops from 65 to 61 in 2 1/2 hours. So; about 1.2 PSI per hour.
I've turned off every toilet angle stop, the refrigerator, washing machine feed, and used TP to ensure no hose bibb, bath, or faucet is dropping. I've removed the toilet hoses to ensure those angle stops aren't leaking. I've even installed a shut-off valve on the 20' of pipe feeding the kitchen slab - all other pipes are in the walls & upstairs flooring.
When I test to see how much water constitutes a 4PSI drop, it's about 2 tsp. So if it's leaking, it's a tiny seep.
I tried the same test turning off the ball-stop valve to the hot water heater, to eliminate pipe expansion issues.
I'm in So Cal. It's a perfect 70 degree day, so I doubt it's thermal freezing or over heating issues - outside is basically the same temp as inside. The feed for the house (only exposed pipe) is on the shady side of the house.
The question is, should I call a plumber for such a small drop or is there some other explanation? Would a plumber be able to locate such a tiny leak, if there is one? If there's even a small leak inside a wall, it could add up to mold & wood rot so it's worth fixing, but it could be a wild goose chase spending hundreds with nothing to show for it.
Wife's about to shoot me for delaying our flooring project, but now would be the time to be lifting subflooring if that's needed. Help!
After turning off water, our PSI drops from 65 to 61 in 2 1/2 hours. So; about 1.2 PSI per hour.
I've turned off every toilet angle stop, the refrigerator, washing machine feed, and used TP to ensure no hose bibb, bath, or faucet is dropping. I've removed the toilet hoses to ensure those angle stops aren't leaking. I've even installed a shut-off valve on the 20' of pipe feeding the kitchen slab - all other pipes are in the walls & upstairs flooring.
When I test to see how much water constitutes a 4PSI drop, it's about 2 tsp. So if it's leaking, it's a tiny seep.
I tried the same test turning off the ball-stop valve to the hot water heater, to eliminate pipe expansion issues.
I'm in So Cal. It's a perfect 70 degree day, so I doubt it's thermal freezing or over heating issues - outside is basically the same temp as inside. The feed for the house (only exposed pipe) is on the shady side of the house.
The question is, should I call a plumber for such a small drop or is there some other explanation? Would a plumber be able to locate such a tiny leak, if there is one? If there's even a small leak inside a wall, it could add up to mold & wood rot so it's worth fixing, but it could be a wild goose chase spending hundreds with nothing to show for it.
Wife's about to shoot me for delaying our flooring project, but now would be the time to be lifting subflooring if that's needed. Help!