Water heater flushing


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Old 01-13-13, 12:46 PM
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Water heater flushing

I have an LP gas water heater that had never been flushed in the 15 years I've owned it. So should these be flushed and how often? Today I attached a hose to the drain and opened the drain and water did flow quickly out to lawn where the hose laid. I then shut off the cold water inlet and opened a sink hot water faucet and the drain of water was almost nothing.
 
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Old 01-13-13, 12:51 PM
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Common advice on an older WH that hasn't been drained is to leave it alone. 15 yrs is a pretty good run even if it fails soon.

I'm going to move this to the correct Topic...this is for boilers and such.
 
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Old 01-14-13, 06:12 AM
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Yep - either do it regularly or not at all.
 
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Old 01-14-13, 06:32 AM
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So do you flush it once a year? Do you leave the cold water on so it flushes quickly? Just asking so when I install a new unit I can maximize its life.
 
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Old 01-14-13, 06:38 AM
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I flush mine twice a year... Spring and fall.


I just run a bucket full of water out with the main valve open.


Every other year I do a complete drain with a transfer pump. Then I turn the main valve on, fill 1/4 of the tank, drain, repeat.... This stirs up the bottom to get most sediment out. I do this short fill and drain multiple times.


Best defense is to add an additional anode rod to the heater and a full port drain valve....
 
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Old 01-14-13, 06:43 AM
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What is and "anode rod"?
I was thinking of making a hose I could attach to a sink faucet and connect it to my air compressor set for about 40 PSI so I could drain the tank completely quickly. What do you think of that idea?
 
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Old 01-14-13, 06:50 AM
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Old 01-14-13, 07:14 AM
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Thanks for those great info sites. Now I know what to do when I get a new water heater. We did have an oder problem but it has not been bad this year so I would guess the anode is gone.
 
 

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