Hot Water Faucets in Home Not Working Properly

Our house is 6 years old (built in 2006) and we bought it 2 years ago (summer of 2010).  Plumbing was all working fine until earlier this week when we starting having problems with lack of water pressure when trying to get hot water at the kitchen sink and in our master bath shower (everything else still working more or less okay).  We tried flushing our water heater tank, but it did not help.  Here is what is happening at all the fixtures in the house:

Kitchen sink (downstairs) – faucet has okay pressure for cold, but barely any pressure for hot and does not get hot.

Downstairs bathroom – faucet has okay pressure for cold (not quite a full stream) and okay pressure for hot (also not quite a full stream) and it takes a while to heat but does get hot. – bathtub has good pressure for cold, but drops off some for hot, and is hot. – shower has good pressure for cold with a slight drop off for hot (not as much as the tub), but is hot.

Upstairs bathroom – left faucet has good pressure for both cold and hot and is hot. – right faucet has good pressure for cold, but pressure fluctuates significantly for hot, but is hot. – shower has good pressure cold to hot, but it takes a while to get hot.

Master bathroom (upstairs) – left faucet has good pressure for cold, but about half pressure for hot, but is hot. – right faucet has good pressure for both cold and hot, and is hot. – bathtub has good pressure for both cold and hot, and is hot. – shower has good pressure for cold, but drops almost to nothing for hot and does not get hot.

Any thoughts on what could cause this and what can be done about it would be greatly appreciated.  Thanks.

Answer:

Thank you for sharing your plumbing story.  Clearly, the one thread running through all of plumbing troubleshooting you have conducted is that the water pressure for hot water is impaired.  So it would be advisable to return to the most likely source which is the hot water heater.  It highly unlikely that the pipes leading to all the different plumbing (hot) faucet fixtures are clogged, rather the problem is very likely with the hot water heater.  Without inspecting myself, it is speculative to tell you what precisely to do. Though it does sound like your hot water pressure regulator is not operating correctly.  This is not something you necessarily want to test yourself, unless you are qualified to do so It may be best for you to contact a qualified master plumber so that the problem can be rectified.

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