Question about Rheem Water Heaters

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I barley start a shower and run out of hot water! How can I fix the problem?

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If you have electric heater, bottom element might be burned out, or a thermostat is bad.
I wrote a troubleshoot page for electric:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

If your tank is gas, run some hot water and see if burner turns on. See if flame is light blue, or if it's burning yellow. If flame is yellow, the gas valve or burner might be bad. If burner does not stay ON very long, the thermostat attached to gas valve might be bad. Replace gas valve. If the flame is blue and the burner turns on, the tank could be filled with sediment, and it's time to clean it out or buy another tank.
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

Hot to find age of water heater:
http://waterheatertimer.org/pdf/WaterHeaterSerialNumberDecoder.pdf

Posted on Nov 15, 2010

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Posted on Jan 02, 2017

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1 Answer

Why do we need to have to continuously adjust the temperature of the water when we're taking a shower. We have a new Rheem gas .hot water tank


It *may* not be a problem with the water heater itself necessarily. When you say "keep adjusting the water temperature when you're taking a shower" I presume you're talking about turning the shower hot/cold knob(s) and not the temp thermostat on the water heater itself.
If so, when it starts to run colder, turn the knob all the way to full hot. Is the water then very hot? If so, the water heater is working fine & doing its job, and the problem is likely to be in the shower faucet mixing valve itself. Sometimes a faulty one will expand the inner seals/cartridge as hot water flows thru it, and starts to (wrongly) restrict the hot water flow, thus causing the constant need to "turn the dial up a notch".

Oct 29, 2014 | Rheem Water Heaters

1 Answer

My water heater heats everything except my lower shower


Let's walk our way thru this one: I assume you have an upstairs shower, and a downstairs shower?-- Are you able to follow the pipes coming out of the Hot Water Heater?-- Can you trace where the pipes to the upstairs shower go?-- And what about the pipes to the lower shower? -- Do they BOTH come off the HOT water pipes coming out of the top of the HW Heater?
A big help in tracing pipes, is by having the hot water run in the Shower that is getting HOT water-- Feel the HOT! pipe?-- Now-- shut that water off, and go to the lower shower-- When it is running, can you hear water flowing out of the pipes at the top of the Hot Water Tanks?-- or do you feel Cold water moving-- Can you travels where it is flowing from? Get back with me, and tell me what you are feeling, and hearing-- Mack B

Oct 15, 2013 | A.O. Smith Ao Smith Bt-80 Conservationist...

1 Answer

I have a problem with low hot water pressure can you help would an elec shower help


1) If possible, it is Best to solve pressure problem before installing new shower.
http://waterheatertimer.org/Low-hot-water-pressure.html

2) If the cold water has good pressure, then Electric shower could fix problem ... but shower would have to be connected to the cold water line and not the hot.

3) Seems the expense of adding a electric shower would be greater than having plumber fix low hot water pressure.
Assuming you have access to plumbing pipes, and this is not apartment building.

Jan 05, 2013 | Water Heaters

1 Answer

Why does water suddenly go cold during shower? It only happens in master bath... guest bath shower does not cause same problem. I have to go outside and unplug and plug back in heater to get it to start...


Try running the hot water in the sink while you have the shower. If the water in the shower stays hot, then the problem is not enough flow through the water heater to keep the heater running. I am guessing that the master bath is further away from the water heater than the guest bath. If not I would check the shower nozzle in the master bath to see if it is clogged a bit or if it is a water saver nozzle because this will slow down the water volume and then cause the water heater to shut off the heat.

Feb 24, 2011 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

1 Answer

Tankless on demand water heater.


Tankless water heaters normally take a little longer than a regular heater to provide hot water because they have to start and get warmed up. I'm guessing the heater uses a pilot light and that the short amount of hot water when you turn on the tap is hot because when the water is sitting still in the heater the heat from the pilot light is enough to get it hot. The tub faucet will get hot a lot faster than the shower because it lets a lot more water through and empties out the pipes faster than the shower. You could probably speed things up by letting the tub faucet run on completely hot for like 10-15 seconds and then turning on the shower.

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Vaillant ecoMAX 828/2boiler goes on & off when running hot water!


water must be set at 3lts a min ,check diaphragm valve move when hot tap is on, check microswitch ,best of luck

Aug 09, 2009 | Water Heaters

2 Answers

I have exactly the same problem


you need to change the cartridge, it is a temp control and is going bad so it keeps you from burning yourself it is like a mixing valve and is givng more cold water, that way you don;t get burned,,

Jun 18, 2009 | Grohe Integrated 1/2'' Shower Thermostatic...

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I purchased a whirlpool 40 gallon hot water heater model #BFG1J4040T3NOV in November of '08. since its been installed i been having a problem with the water staying hot for more than 1 shower. After about...


Will the water stay hot in the kitchen sink? Try to isolate the problem. If it is happening at all hot water locations, then it will be related to your water heater. If just in the shower then it is related to the mix of water ratio coming out of the shower hear. If its only the shower, then you are getting too much cold and not enough hot through the pipes. This can be very simple to fix by replacing the handle going to the shower. If this does not work then you may have a problem in the hot water pipes. After you isolate the problem, please post another question here.

Apr 16, 2009 | General Electric GE SmartWater Household...

3 Answers

Water is either hot or cold - no in between.


I found a way to get warm water in the shower, but I'm not sure it qualifies as a solution. After trying everything else I thought that maybe when I was feathering the faucet in the shower toward the cold side so I would get warm water that at a certain point it blocked the flow on the hot water side enough so that the sensor in the hot water heater sensed there was no demand in the line and it shut the water heater off. To test this, I went to the kitchen and turned the kitchen sink faucet all the way to the hot side and then turned it on so that I got a small flow of water. I waited for the water to get hot to be sure the hot water heater was working. Once it was hot, I left it running to keep demand in the line and then I went to the shower and turned the faucet on. When the water got hot I started feathering the control towards the cold side and soon I had warm water. So I think I'm right in that the sensor in the hot water heater was shutting the water heater off when the demand in the shower was lowered to a certain point when I was trying to adjust the water temp in the shower.

So now I can get warm water, but it means I have to leave the hot water running at another fixture in the house to create a false demand in the system so the hot water heater doesn't shut down. Is there a way to adjust the senor in the hot water heater so that it will stay on when I'm using the shower only, so I don't have to waste water by running another faucet when I want to take a shower?

Nov 28, 2008 | Water Heaters

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