I have a two story house and three of four bathrooms get hot water just fine. One bathroom gets none. Water flow is just fine, just no hot water, at anytime. It used to, but not now. Any suggestions?

You mean no matter how long you let it run it never gets hot?

Must be bypassing somewhere.

Yep,

I let it run for 10 minutes the other day. Funny thing is it used to get hot right away.

You might want to try replacing the fawcett. Is there a shower in that bath? Does that get hot?

LK

Has anyone worked on the water distribution system lately? Mabey a crossed line somewhere?

Yep,

I let it run for 10 minutes the other day. Funny thing is it used to get hot right away.

Then like I said it has to be bypassing.
Is there a single lever faucet nearby allowing cold water to be drawn backwards through the hot pipe?
Laundry washing machine fill valves do this sometimes also.

One thing you should do is look at your water meter with nothing in your house running water. If you see the meter moving with everything shut off, then you have a pipe leaking someplace. Another easy check is to buy a pressure gauge, screw it on to an outlet in your yard, turn on the water and see if the pressure holds steady (should be around 60 psi, 50-65 is fairly safe depending on the type of pipe you have). I am not a plumber, but I've had my share of plumbing problems and I work with a former home inspector.

One thing you should do is look at your water meter with nothing in your house running water. If you see the meter moving with everything shut off, then you have a pipe leaking someplace. Another easy check is to buy a pressure gauge, screw it on to an outlet in your yard, turn on the water and see if the pressure holds steady (should be around 60 psi, 50-65 is fairly safe depending on the type of pipe you have). I am not a plumber, but I've had my share of plumbing problems and I work with a former home inspector.

Water pressure varies drastically between one's person's house and somewhere else, some people have 40 PSI while other people may have 100 PSI and running a "shut in test" is OK for finding out if you are loosing water somewhere after the meter but neither would have anything to do with this problem.

Thanks everyone, especially you Dean and TDW. I will check those things out and get back to you.