Gas Hot Water Heater-Temperature control

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jkcsanchez

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I own a Rheem gas hot water heater; temperature control dial is set to the lowest setting; water temperature still rises to a dangerous 150 degrees farenheit; Can the temperature control valve be recalibrated or replaced.
 

Gary Swart

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Yes it can and probably should be. Of course all of the electronics should be tested before just sticking new parts on and hoping for the cure. A plumber would be able to test everything and then make whatever repairs are necessary.
 

Jadnashua

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Depending on the age, it might be under warranty. I'd give them a call. I'd also review the troubleshooting guide in the manual. If you don't have that, you can probably find it on their website.
 

Jadnashua

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For adults this is a 3rd degree burn in 2 seconds.

This is also why my city requires all new WH installations/replacements to have a tempering valve on the outlet. Now, those can go bad, too, but it's a secondary safety measure.

Having the water that hot has some advantages IF you have a tempering valve...it makes it look like you have a bigger tanks, and will kill any bacteria that may be in the water. It costs more to keep it hot, though.

honeywell_tempering_2.jpg
 
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jkcsanchez

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Thanks everyone for the information provided. Since the unit is 8 years old, I've decided to install a new HWH.
 
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