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Old 12-23-2010, 03:27 PM   #1
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Very little hot water (gas HWH)


As of late we are noticing some problems with our hot water heater. It's gas, and probably 8-9 years old I'm guessing. We moved in 2 years ago.

When I have a shower I have to constantly turn down the cold water to keep the water at a decent temp. This morning off a sudden the water went cold, then it went back up to temp. Nobody else was up at the time using any faucets. The other day my wife had a shower and could only go a few minutes before the hot water ran out.

The water here is quite soft, so no conditioners or anything is used.

Before I call anyone, should I try draining the tank to see if its full of sediment? I found a few web sites with instructions on how to do this. It sounds straight forward and I hope this helps. Otherwise I guess I might have to replace it. Merry Christmas

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Old 12-23-2010, 03:39 PM   #2
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Very little hot water (gas HWH)


Your dip tube in the tank is broken off or gone, this is the tube that brings the cold water to the bottom of the tank, without it you are short circuiting cold water right out of the hot water side.

I would bet that on your tap discharge screens there will be little flecks of white or grey looks like calcium, that would be whats left of your dip tube.

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Old 12-23-2010, 04:31 PM   #3
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Very little hot water (gas HWH)


Thanks for the reply.

So the cold water would be running straight into the hot water at the top of the tank?

I take it this cannot be repaired so the entire tank must be replaced?
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Old 12-23-2010, 04:41 PM   #4
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Very little hot water (gas HWH)


Quote:
Originally Posted by Scott Stevens View Post
Thanks for the reply.

So the cold water would be running straight into the hot water at the top of the tank?

I take it this cannot be repaired so the entire tank must be replaced?
Depends, there is a coupling on the top of the tank, below the union, if you can get the short nipple out then you can replace the dip tube, HD and Lowes sell them, the trouble is over time those coupling are very difficult to get off. A tip is leave the water in the tank, you will need that weight to oppose the force you will have to use with a pipe wrench.

If you are successful at that then you should replace the anode rod as well, another tough one but it will extend the life of your tank.
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Last edited by Jackofall1; 12-23-2010 at 04:45 PM.
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