My husband and I recently moved into a new house that has two water heaters. One is gas and supplies the main portion of the house, the second is electric and (as far as we can tell) only supplies the extra bathroom added in our garage conversion. We flushed the gas heater today and now have no pressure at our kitchen sink, but only when hot water is turned on. All bathroom faucets and our laundry machine are working fine.
We took the following steps:
- turned off gas
- turned off water
- opened the pressure relief valve
- opened the drain valve
- let water drain
- closed drain valve
- closed pressure valve
- refilled heater
- turned on gas
Our only guess currently is that somehow the pipe to the kitchen clogged, but we haven't had a chance to try dismantling anything yet.