Just recently moved into a 60's or 70's place. The cold water pressure is
great. But the hot water pressure sucks. That is very little water pressure
for the hot water, anywhere in the place. It is most noticeable in the
shower (of course). What are some things I should look at to fix this
problem? Unfortunately, I can't tell what type of water heater is being used
because it is covered by a thermal blanket. Do you think that sediment (sp)
at the bottom of the tank could be causing this problem?
Sediment shouldn't have any effect.
First thing to do is to make sure that all valves (such as the shut off to
the heater) are open.
My pressure was really bad at a few places and I thought the pipes must have
deposits. Then I took a bunch of gravel out of the fixtures and all was
fine. So, remove your shower head and look for debris.
Yep, that's the first thing to do when you have a pressure problem on
one side only. Remove the strainer on the faucet and clean it. do
the same at every fixture in the house. Only after doing that should
you go looking for problems elsewhere as just cleaning those screens
will usually fix the problem.
Sediment at the bottom won't cause this as water is pulled out at the
top (although the dip tube does introduce Cold water near the bottom).
If the heater drain cock isn't clogged, open it and see what the
flow is like. (You could even measure the time to fill a bucket.)
Long shot, but it is possible that the nipples connecting right
at the top of the heater are corroded and blocked.
Don't overlook a supply valve partway closed (like at the heater).
If the Hot supply pipes are old galv iron (they were still used in 60's)
suspect blockage due to rust/scale. Only fix is replacement.
There are so many possibilities that you have to do some methodical
detective work. Start by finding out the pipe material.
Yes, as I indicated earlier. If you have Galv supply piping, the
Hot side is first to clog with rust/scale.
While there could be a localized major blockage (like a fitting
at the heater), more often the entire length of piping is to blame.
You can use chemicals in the tank to dissolve calcium sediments,
but that is an entirely different problem. It is not practical
to chemical flush lengths of galv pipe.
I would start putting cash in the piggy bank for a re-pipe,
unless you can identify a single component which is obstructing the
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