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Old 02-21-2015, 10:58 AM   #1
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Hot water temp


Is this normal?

My 2 yr old GE water heater is set at 125

Even after running awhile the hot water out of faucet is 115

I drain sediment once a year.
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Old 02-21-2015, 11:55 AM   #2
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Yes, I would say so. Thermostat may be a little off. 10 degrees off isn't bad. None of them are exact. Remember when using the hot water there is constant cold water entering the tank to be heated mixing with the hot water.

Others will be along with more advice.
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Old 02-21-2015, 04:44 PM   #3
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Jmon, thanks. I didn't know that. I try to be conservative but the dishwasher doesn't do a good job on greasy dishes if I don't pre-wash. Maybe what it cost to turn the water heater up I'll save by not running hot water pre-washing!

I'm the only one in the house but the plumber still recommended a 40 gal tank.

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Old 02-21-2015, 06:15 PM   #4
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Dishwashers need water at 140F for good cleaning, a temperature you can't even set most water heaters to (130 seems to be the max anymore). Maybe that's why virtually all but the cheapest dishwashers today have their own heater.
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Old 02-21-2015, 06:44 PM   #5
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Md21gyk, I was curious so just reset my HWH. The dial goes up to 150, but could be designed better.

There are no numbers or marks between 125 and 150. I had to guess where I was setting it, so started at less than the middle between both numbers.

Theres a danger sign saying temps over 125 could cause death. I'd hate for my obituary to read; "she died from 126 degree water."
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Old 02-21-2015, 06:51 PM   #6
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Quote:
Originally Posted by Startingover View Post
Md21gyk, I was curious so just reset my HWH. The dial goes up to 150, but could be designed better.

There are no numbers or marks between 125 and 150. I had to guess where I was setting it, so started at less than the middle between both numbers.

Theres a danger sign saying temps over 125 could cause death. I'd hate for my obituary to read; "she died from 126 degree water."
Actually, water temp at point of delivery should be 120* (per my code)
Commercial kitchens use a booster heater or a separate dedicated heater and piping to reach 140* for dish washing

You'll find that the typical WH thermostats will not be accurate- plus or minus 10*
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Old 02-21-2015, 08:51 PM   #7
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Water at 100F or below Most water heaters are unlikely to scald an adult occupant;

Water at 120F 5 minutes 2nd & 3rd degree burns on adult skin
Water at 130F 30 seconds 2nd & 3rd degree burns on adult skin
Water at 140F 5 seconds 2nd & 3rd degree burns on adult skin
Water at 150F 1 1/2 seconds 2nd & 3rd degree burns on adult skin

Water at 160F 1/2 second 2nd & 3rd degree burns on adult skin

Last edited by Ghostmaker; 02-21-2015 at 08:54 PM.
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Old 02-21-2015, 09:16 PM   #8
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I do not see any problem with that drop. Remember that as you are letting Hot water out of the Water Heater, cold water is coming in at the same time. Which means that there will be a drop in temp as you are cycling Hot with Cold water.

The output temp has to be within 110 to 120 deg's Fahrenheit. If kids or handicap in the home. The temp should be set lower or Anti-Scald mix valves used to keep a person from burning their selves when they turn on the hot water.




Last edited by gregzoll; 02-21-2015 at 09:21 PM.
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