Water Heater Thermocouple - Voltage Test & Replacement | Repair & Replace

How do I install a new thermocouple? In this episode of Repair and Replace, Vance shows how to replace the thermocouple in a gas water heater. As well you'll learn how to test the thermocouple voltage to see if its functioning correctly. If the thermocouple is faulty then it will not produce enough voltage and will prevent the pilot from staying lit. Specifically this video focuses on a standing pilot water heater with a conventional gas valve.

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00:00 Intro
00:51 How it Works
01:40 What You'll Need
01:58 Always Be Safe
02:12 Voltage Test
03:48 Disconnect the Water Heater
04:11 Burner Assembly Removal
05:07 Pilot Assembly Removal
05:36 Thermocouple Replacement
06:52 Pilot Assembly installation
07:26 Burner Assembly Installation
08:21 Turn on the Water Heater
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If your water heater has an electronic gas valve, then the repair will be different:

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[brianstrickfaden]

Super helpful video explains everything I had questions about. Very professionally narrated with easy to follow steps. Thank you 👍🏼

[johntushabe-winnerscommuni]

I have watched several videos before I landed on this one. Yours by far was the best step by step tutorial I came across, followed it step by step and got my water heater going. Thank you so much for producing this video.

[terencefung]

This is the best video of Water heater Thermocouple repair I have seen. Good job and thank you.

[JoseSanchez-qhzd]

Thanks a lot! Great job! Easy to understand! I replaced thermocouple and it works! Payed less then $11 for the part and saved a lot of money doing it myself. I wouldn't touch this without your help! Thank you!!!!

[nirmalakranthi]

I have watched many videos. But, this is the best by far. I am a first home owner and I am able to fix my water heater. Thank you for making this video.

[RichardBronosky]

I was able to clean the thermocouple with a small cutting of stainless grill scrubber held in a pair of long hemostats. If I were to have to disconnect the gas and pilot lines to clean the thermocouple, for less than $12 at the big box store, I'd just replace it to make sure I got it done correctly it one shot. Thanks for the excellent instructional video! I'm going to order a replacement thermal switch from you (which cannot be purchased locally) to support the creation of these valuable video resources. ☮❤🌈

[asims]

Thank you so much! Your step by step tutorial helped me fix water heater

[niccobernardino]

The thermal switch did it for me. I just reset it and replaced thermal couple. Took me 2 days and came across this video. Thanks for this awesome video. 👍

[dereklevie]

Thanks for the help!! $12.06 from my local parts store. Brought my 20 year old water heater back to life.

[Gutch]

yes, this video is the best one I've seen. it answered a lot of unanswered questions.

[cmattric]

Saved me hundreds of dollars from a service call! Much appreciate the video

[allengalaxy]

Very good instructional video, thanks!

[triautism]

Appreciate the vid... helpful to know how to measure things. Mine wasn't staying lit so I replaced the thermocouple and the new one maxed out at 20mV. It still would not stay lit.

Grabbed another thermocouple (universal at Lowes) and it is putting out 23-25mV and now working again.

[KenLord]

A friend told me the thermocouple was probably my problem - pilot light wont stay lit. thermal limiter switch checks out fine. I found this video. Tested my thermocouple - seems to be fine at 26mv. Reconnected it. And the pilot light stays on now! buaaahahaha! Thanks! :)

[seanmaggi]

good stuff thanks so much for taking the time to put it together.

[dantediego]

Thanks! I replaced it with no problems

[patrickkatkaew]

The best of the best videos super clearly love..this channel

[am_]

I’m a service plumber and thank you for this, I get called to water heater issues all the time, I often don’t know when it’s a failing thermocouple or a failing gas control valve, what is the best way to test to know which one is in fact failing?

[Songhuong]

Thanks 🙏!!
This Video Clips really healthful 🎉!!!

[hoahaonguyen]

Hi, I have a Rheem Water Heater 130L, it has this problem: the pilot stays on, and the main burner only fires up few minutes and then off. If I try again, nothing happens, the main burner does not fire up and the pilot still stays on. Do you have any idea to fix this? Is the problem caused by the thermocouple?
Thank you very much. Your video is the best compared with others on Youtube.