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  #1  
Old 1/16/09, 7:56 PM
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jhanna1 jhanna1 is offline
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Default Slow Flow from water heater
The flow from my 6 year old 40 gallon Craftsman Hot water heater is about half of what the cold water flow is. Water is plenty hot, it just doesn't flow like it did when new. Have checked all faucets and no restriction.
Any ideas anyone?
Thank's, Jim..........
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  #2  
Old 1/16/09, 8:05 PM
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Doug Edwards Doug Edwards is offline
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Default Re: Slow Flow from water heater
Check the cold water supply line valve on the WH. That controls the input as well as the output pressure on the hot water side of the system. If it is not fully open that would effect the pressure. You did not say if this was only a recent thing. I occasionally find one with a gate (ball) valve with a handle that may have gotten moved slightly off of FULL open.


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Old 1/16/09, 8:06 PM
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Michael Larson Michael Larson is offline
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Default Re: Slow Flow from water heater
Quote:
Originally Posted by jhanna1 View Post
The flow from my 6 year old 40 gallon Craftsman Hot water heater is about half of what the cold water flow is. Water is plenty hot, it just doesn't flow like it did when new. Have checked all faucets and no restriction.
Any ideas anyone?
Thank's, Jim..........
When is the last time you flushed it out through the drain valve?

I have seen them load up with calcium in hard water areas.


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Old 1/16/09, 9:04 PM
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Default Re: Slow Flow from water heater
Are you on Galvanized pipe.?
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  #5  
Old 1/17/09, 7:35 AM
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Barry Adair Barry Adair is offline
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Default Re: Slow Flow from water heater
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Originally Posted by relliott View Post
Are you on Galvanized pipe.?
he doesn't look like that kind of guy
and do you really expect him to admit it, here?


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Old 1/17/09, 8:31 AM
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Default Re: Slow Flow from water heater
Quote:
Originally Posted by relliott View Post
Are you on Galvanized pipe.?
Not galvanized................ copper
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  #7  
Old 1/17/09, 8:34 AM
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Bob Elliott Bob Elliott is offline
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Default Re: Slow Flow from water heater
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Originally Posted by jhanna1 View Post
Not galvanized................ copper
Good.
Glad you do not have that problem.
I would dis-connect,right at the output side.
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  #8  
Old 1/17/09, 8:39 AM
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Default Re: Slow Flow from water heater
Quote:
Originally Posted by relliott View Post
Good.
Glad you do not have that problem.
I would dis-connect,right at the output side.
That was suggested by a friend of mine. Will try that next to see if I have blockage.
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  #9  
Old 1/17/09, 8:45 AM
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David P. Valley David P. Valley is offline
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Default Re: Slow Flow from water heater
If the hot water pressure was fine when your w/h was new and you're now seeing a difference, I'll bet it's calcium deposits in your faucets. Try taking them apart and cleaning the interior cartridge, to include the aerator.
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  #10  
Old 1/18/09, 8:48 PM
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Default Re: Slow Flow from water heater
Another possible trouble spot is a softener is it is connected only to the hot water input to the heater.
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