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Old 10-05-2015, 11:32 AM   #1
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Low HW pressure on second floor


The hot water pressure is extremely low on my second floor even though the cold is just fine. The hot water tank is only about two years old. I have all copper pipes and the shut valves are opened all the way. There is only one bathroom on the second floor and I have the same problem with the sink and shower. The first floor works just fine.
This is a rental and this has apparently been going on for a while, but for whatever reason it is a problem now.

Any ideas why it would be so low?
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Old 10-05-2015, 05:09 PM   #2
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Quote:
Originally Posted by This_old_dump View Post
The hot water pressure is extremely low on my second floor even though the cold is just fine. The hot water tank is only about two years old. I have all copper pipes and the shut valves are opened all the way. There is only one bathroom on the second floor and I have the same problem with the sink and shower. The first floor works just fine.
This is a rental and this has apparently been going on for a while, but for whatever reason it is a problem now.

Any ideas why it would be so low?
Pressure regulator(s), partially blocked pipes, water leak, crud in the aerators, it could be a number of things.
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Old 10-05-2015, 05:16 PM   #3
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More likely they used 1/2 instead of 3/4 as a main supply line.
A 3/4" has twice the avaliable flow.
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