Question about Rheem 50 Gallon FVR NATGAS Water Heater 6YR 22V50F1

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I think I need to drain/flush our hot water heater

Our Rheem model 21V50-2 hot water heater seems to have a build up of particulate in the tank. As far as I know it has never been drained and/or flushed.
I don't know how to go about draining it. Can you give me some pointers?

Thanks in advance.

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Hi first making sure not to burn yoursel switch of heater and drain down down water from taps this may result in causing an air lock dont worry ! at the base of the heater you have the stat and element housing first withdraw the stat then the element alowing any remaining water to drain when fully drained turn on your water supply to flush out and clean replace element and stat using plummers sealent or tape hope this helps

Posted on Nov 16, 2009

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Posted on Jan 02, 2017

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1 Answer

Egg smell from hot water


You either have water with a high sulfur content or need to flush your heater. you should flush your heater every year anyway. you can turn off the water and electric to the heater. and totally drain the tank when it is totally drained add more water and drain some more. then refill the tank and run a hot water faucet the tub is best to eliminate any air in the system then turn the electric back on this should solve the problem if it does not you probably have sulfur in the water and would need water treatment or filters to help

May 06, 2014 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

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We have a rheem hot water heater selfkleen. Does that mean that it never needs to be flushed out for sediment?


The way it is designed on the water inlet it is supposed to cause the water to swirl around the tank wall to help keep sediment from building up. I would still recommend draining and flushing every couple of years if your water has a very high mineral content. Thank you.

Jul 25, 2011 | Rheem 65 GAL ELEC Water Heater 6YR Self...

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I have a Rheem 41VRP50N water heater. The water I am getting is luke warm on a good day. The burner fires up when I turn the thermostat to the highest temperature only. I drained the unit and flushed...


This condition can be caused by 4 different problems, or combination of these problems.
Good indicator would be to check temperature of water inside tank.
Put bucket under TP overflow tube and release water into bucket, then use cooking thermometer to gauge temperature. Stand back from scalding water that can shoot out of overflow.

If tank temperature is 120-130:
1) Crossover is suspect:
http://waterheatertimer.org/Crossover.html

If tank temperature is low:
2) Bad gas control valve thermostat is suspect.
I believe Rheem 41VRP50N has Honeywell or White Rodgers electronic gas control valve.
Open following link to identify gas control thermostat and see typical error codes.
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#Honeywell
Replacement gas valve can be purchased from Rheem.

3) Combustion parts and tubes need cleaning, and bleed gas line for air and water contaminants.

4) Water heater has sediment build-up coating burner transfer surface and covering thermostat.
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html
Year of manufacture for Rheem water heater is 2nd two digits of serial number, so XX03.. would be 2003.

Add a comment and say what you did to solve problem.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jun 03, 2011 | Rheem Water Heaters

1 Answer

I own a house with an electric GE hot water heater. 8ESOT12AA01 Serial # 090122 5750 I do not know how old the hot water heater is and advice about when it should be replaced. No leaks to date but I...


GE is made by Rheem, but the market is always changing. Rheem-based serial number shows tank was made in 1990.
Tank will last as long as anode rod(s) protects steel tank from rusting.
If your tank has two anode rods, then tanks lasts longer.
That's how companies determine if water heater is '6-year' or '12-year.'
I don't have manual for your product to say if you have 12 year tank. Side of tank might have information blurb besides mandatory label that shows serial number.
You can update your water heater by replacing anode rod(s) assuming they can be loosened and removed after this number of years, which is a big IF with old heaters. Your plumber might have impact wrench he uses to see if anode can come out.
http://waterheatertimer.org/Replace-anode-rod.html
http://waterheatertimer.org/Leaking-water-heater.html

If the water heater is making gurgling rumbling and/or crackling sounds then tank has sediment build-up.
You can also get a baseline of rust by flushing tank and watching if water is very rusty.
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html
http://waterheatertimer.org/Water-heater-will-not-drain.html

If you flush tank regularly, and inspect anode every 1-3 years, a tank will last many years longer than manufacturer's label.
http://waterheatertimer.org/Water-heater-manufacturers.html

Apr 20, 2011 | General Electric Water Heaters

1 Answer

Our hot water will last for about 5- 10 minutes then turn luke warm. I have replaced both elements but problem remains . Do you hink it is the thermostat ? thanks chazz


If you have not done so already then turn thermostats up to 140 degrees. You may also try to drain and flush tank to clean out any mineral deposits that could be hurting your effiency. To do this shut off electrical power to heater then connect garden hose to drain valve on the bottom of tank. Run hose to floor drain or other safe area and open drain valve. If it drains good with the water on then let it flush for a couple of mins. then shut incoming water supply off. Let tank drain as far as it will. You may need to open a faucet on the hot side of nearby fixture to break vacumn.
Drain it completly then close drain valve and hot side of faucet.Turn water supply back on and let tank refill. Do this 2-3 times to get inside of tank as clean as possible. Hope this helps you and thanks. P.S. You may need to replace thermostat also.

Mar 28, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

This Rheem gas water heater fills with cold water and then drains immediately through the pressure -temperature valve. Would replacing the pressure-temp valve do the trick, or could it be something more?


Provided that there aren't other issues with your heater, changing the t&p may be enough. I say this as they generally do not just fail on their own, but rather, something has caused it to operate. This is either caused by temperature or pressure. Without knowing the age of your heater, it is a bit difficult to advise you as to replace or repair the heater. If you are comfortable that your's has more useful life in it, you can replace the t&p valve. If the expected life of the heater has been reached, you may wish to replace the unit.
To Replace the T&P Valve: Shut off the gas, and close the water inlet valve. Drain the tank down. The best way is to attach a hose to the boiler drain and route it to the outside. This also will help remove silt and sludge that can build up in water heaters, and extend the life of your tank. You will need to take an air bleed to allow the tank to drain. You can do this by lifting the lever on the t&p valve and by opening one of the hot water valves that you heater provides water to. You should hear air being pulled into the heater as the water drains.
There is a tag on your valve. When you remove your t&p valve, take it to the hardware store with you, tag and all. Get an exact replacement, and install according to the directions.
Before you pressure the heater back up, flush water through it through the still open drain. This will stir up and flush out any remaining sediment.
Close the drain, but leave the hot water valve that you opened earlier open, as the tank fills, the air will be expelled down the line. Fill the heater completely, then re-light the heater.
Best regards, --W/D--. Feel free to rate this solution.

Jan 25, 2011 | Rheem Water Heaters

1 Answer

Both upper and lower heating elements are working and both thermostats have been changed but Im still having problems where my hot water doesnt last very long. Could my dip tube be my problem, and if so...


before going to far on this. drain water out of tank untill it runs clear. there may be a build up of sediment in the tank. try this first. shut off cold water to tank.
  • The cold water line should have a shut off valve on it. If it does, turn it off. If it doesn't, you may have to turn off the water at your regulator or at the street.

  • On the bottom of the water heater, there should be a hose bib. Attach your water hose to the bib and run the other end to a drainage site of your choosing. Open the hose bib and allow the water to drain out. when done flushing it turn on cold water and let sit for a while to build up the hot water.
  • If your water heater is gas fired, turn off the gas valve at the water heater locaton. If it is electric, turn off the breaker controlling the water heater. before draining. have a nice day !!

    Jan 22, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

    1 Answer

    Rusty colored water from hot water- is a gas heater and I replaced all the water pipes with new recommended lines and even added a water filtration system (whole house). The water heater built and...


    Hello,The "rust" is from the water itself.If the supply has a high iron content the process of heating it up seperates the iron out and over time it will form deposits on the bottom of the hot water tank.Locate the tank drain and connect a hose and open it up and let it run "flush" out the tank.Do this every month to keep it from building back up.It should be mentioned that the drain valve can be plastic and or very hard to close once it has been opened.They sell a brass drain end cap or the drain can be replaced with a new (long stem)drain.

    Oct 11, 2010 | Rheem Water Heaters

    1 Answer

    Remove the build up in a hot water tank


    All you can do is to flush the water tank with the power off until you get clear water. The buildup is caused by hard water mineral deposits. You definitely need a water softener to prevent further accumulation. I found mine at sears on sale a few years ago, they were fairly reasonable and the installation wasn't that bad to do.

    Jan 19, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

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