Well, here's a question from a random DIYer. After a hot shower, water pressure goes way up.

As the title says. If I take a hot shower, after shutting the water off, pressure goes up -- water sputters out of faucets for a little bit after, until it settles down. Water pressure right now in the pipes: 45 PSI. There's a new pressure regulator installed at the curb, water pressure from the street is 100 psi. Regulator installed by a plumber. After taking a shower, pressure goes up to about 90 PSI, unless I relieve the pressure by opening a faucet. 2 gallon expansion tank is attached to the 50 gallon water heater and is brand new as well. Expansion tank installed by me -- the old expansion tank had ruptured internally, tapping on it you could hear it was full of water, and pumping it did nothing - always at 0 PSI. New expansion tank is pumped to 45 PSI, it was at 40 PSI from the Home Depot, I pumped it a little bit. Any thoughts here? I can only imagine that the expansion tank is too small, but... Other houses I've lived in have the exact same setup and I didn't have this problem... Thank y'all so much :) submitted by /u/roadrunnersk [link] [comments]

As the title says. If I take a hot shower, after shutting the water off, pressure goes up -- water sputters out of faucets for a little bit after, until it settles down.

Water pressure right now in the pipes: 45 PSI. There's a new pressure regulator installed at the curb, water pressure from the street is 100 psi. Regulator installed by a plumber.

After taking a shower, pressure goes up to about 90 PSI, unless I relieve the pressure by opening a faucet.

2 gallon expansion tank is attached to the 50 gallon water heater and is brand new as well. Expansion tank installed by me -- the old expansion tank had ruptured internally, tapping on it you could hear it was full of water, and pumping it did nothing - always at 0 PSI.

New expansion tank is pumped to 45 PSI, it was at 40 PSI from the Home Depot, I pumped it a little bit.

Any thoughts here? I can only imagine that the expansion tank is too small, but... Other houses I've lived in have the exact same setup and I didn't have this problem...

Thank y'all so much :)

submitted by /u/roadrunnersk
[link] [comments]