Hot water at master bedroom shower was always slow since we bought the house but is now just a trickle. Cold water and all other hot water faucets are fine. I have an older house with plumbing that is behind walls, so instead of cutting walls do you think I should cut the pipe in the basement and try to back flush it to see if it is just clogged with rust or something?

Quote:

---

so instead of cutting walls do you think I should cut the pipe in the basement

---

No, I think you should turn off the water, remove the hot water stem from the faucet. Then turn on the water briefly (about 5 seconds) and flush out what ever is blocking the hot water side of the faucet. Then reinstall the hot water stem.