Just finished remodel on additional bathroom. Original bathtub now losses hot water after a few minutes, goes lukewarm. Additional bath uses pex pipe attached to copper and no change made to original bath. TIA

There is someway that you may have crossed the water pipes.

Leymetellu... thanks for the reply. Original bath wasn't changed and I do get initial hot water that goes lukewarm after a few minutes. I suspect my water heater is giving up the ghost (dip tube problem?). I did discover that hot water goes luke warm all over house. Tia

I agree if you are having that problem all over then more than likely it is the dip tube... Do you know how to put in a new dip tube.?

The dip tub's located directly under the cold water inlet of the heater. It just sets on a flange and if it's fallen in there's njot much you can do except to replace the dip tube and keep on flushing your heater on a monthly basis to get the crud out. Good luck, Tom

Thanks for the info... I figured the dip tube is the problem, but if I'm going to have to cut the old water heater lose, I might as well put a whole new heater back in... existing is 12 years old and there is about a 4 inch pile of rust below the burner. I can sweat copper so install shouldn't be a big deal.

Docbob

Good luck and let us know if we can help. Tom

Speedball... thanks again. I plan to tackle the project tomorrow

Docbob