I have a Rheem Standard Energy miser electric water heater that is 46 " high, serial # R 0590105132 and model # 81v40D---40 gal. Could you please tell me the year it was manufactured? Thank you, JoAnne

Some of the old gas water heaters used electric water heater thermostat.
Just use a standard thermostat.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

http://waterheatertimer.org/http://waterheatertimer.org/Add-another-thermostat-to-gas-or-electric-water-heater.html

http://waterheatertimer.org/How-to-replace-thermostat-on-gas-water-heater.html

Gene


Water Heater Timers Save Money

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

it does have 2 elements they are located under the 2 panels on the heater you will find them under the covers on the front they will be connected to the thermostats follow the wiring. besure to turn off the power before working on it and use a tester to double check

http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#new
gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

1) Rheem 81V40 electric water heater ... manufactured pre 2009 ... posted serial number does not match manufacturer
http://waterheatertimer.org/pdf/Find-Age-of-water-heater.pdf
http://waterheatertimer.org/pdf/Rheem-Ruud-2009-water-heater-parts-by-model-number.pdf page 5

2) Possible date of manufacture 11-1994

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Open following links for water heater troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

You can find age of water heater from serial number located on label on side of tank.
Label also shows tank size, and tank wattage and element wattage

http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html

Serial number decoder:
http://waterheatertimer.org/pdf/WaterHeaterSerialNumberDecoder.pdf
For example Rheem serial number 0790...
First 2 digits are month 07 July
Next two digits are year 1990

Rheem site does not show 81v40d
http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

i think since "tankless" water htrs entered the market...your plumber referring to a standard w/h means a storage tank wtr htr(stores 40 or more gals) ..most popular brands are a o smith rheem bradford white

Hi,

Here is a tip that I wrote to help people understand how to adjust the temperature on their electric hot water heater.

Electric Hot Water Heater Temperature Adjustment
heatman101

Yes manfactured on or around 1999.

The water heater was taken out to tile the floor and put back in 2 days later. It has power but is not heating the water. Can you help?