On Nov 1, 2:27 pm, (Chris Lewis) wrote:
According to :

I have a Price Pfister shower faucet, it is a single lever turn handle
type. When I turn it to the cold water setting I get hot water for the
first few minutes. It then goes cold but it is very hard to regulate
warm water, I either get hot or cold. I was assuming it is a valve
within the cartridge that separates the hot and cold. I am also
getting hot water coming out of the sink tap for about 30 seconds now
as well. Will replacing the cartridge in the shower faucet solve both
problems or is something else going on with the plumbing?

Is it a pressure balance faucet? Do you have continuous hot water
circulation for "instant heat"?

I could see a pressure balance faucet malfunctioning and doing
something like this, but not so that it would affect another
fixture. If you have continuous hot water circulation, some
setups will have warm water out of the cold faucet for a short
period.

Otherwise, it could be a cross-connect between hot and cold somewhere
else in the plumbing. Don't laugh, I saw a setup where the HWT
outlet was directly cross-connected with the cold side, and it
went undetected for _years_, before someone used to how it _should_
work (me) said "it shouldn't be working like this" (hot wasn't
very hot, and didn't last long), and spending half an hour tracing
the pipes.
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.

Thanks for responding. It's the original faucet installed by the
builder, I don't think it is a pressure balance faucet. It hasn't
given us any problems for 7 years. We have the typical tank type water
heater. Could it be cross-connected and not detected for 7 years (I
use the shower every day)? We are not getting the "(hot wasn't very
hot, and didn't last long).