Less hot water than before

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  #1  
Old 03-15-13, 01:06 PM
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Less hot water than before

We have 40 gal hot water tank with a pump that circulates
the water around in a quick fashion. All was working fine
until our water company turned off the water to install a new
Water meter. Water stayed off for about 30 min and was then
turned back on. As you might expect there was air in the lines
and the water was discolored initially. We noticed that it was
taking a longer time than usual for the hot water to reach the
shower and sinks. It was if the pump wasn't running? I checked
the pump and noted the timer located on the pump was running.
Initially, I had checked the circuit breaker and found it was not
tripped. We noted that there seemed to be less hot water during
showers than before and of course it was taking longer to
get hot water. I called the plumber but by the time he arrived
the next day the pump now seemed to be working as before and

However we noticed again that there wasn't as much hot
water available as there had been before the water had been
turned off and on.

Can there be air trapped in the hot water tank that is preventing
the tank from filling to capacity as it had done before?
 
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Old 03-15-13, 01:18 PM
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I would start with the circulation pump, to see if it incorporates a filter or screen that may need maintenance. The next thing that I would do is flush the water heater, the instructions for which should be in the owner's manual.
 
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Old 03-15-13, 01:41 PM
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Electric HWH? Gas?.......................
 
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Old 03-15-13, 02:55 PM
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Sorry. I neglected to say the hot water tank is gas.
 
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Old 03-15-13, 02:57 PM
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I would say check for a check valve that may be stuck. That will mix cold water with the hot and make it seem like you are running out of hot water.

You said sediment from the meter change right? May be hanging up the check valve.
 
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Old 03-15-13, 03:35 PM
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Sorry..where would the check valve be located? And how would
You unstick it?
 
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Old 03-15-13, 03:39 PM
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So flushing would remove any air that may have been
put into the tank?
 
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Old 03-15-13, 03:40 PM
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Should be near the pump.... Take the top off after to turn the water off. Make sure it swings freely.



 
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