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Resideo CQ100A1005 36-Inch Replacement Thermocouple for Gas Furnaces, Boilers and Water Heaters.
From the Manufacturer
Replacement for 36" gas pilot safety control for use with gas furnaces, boilers, water heaters and room heaters.
Anthony B.
2025-09-01 16:10:26
Thermocouple went bad so I needed a replacement. Easy to install and works perfect.
Steven D
2025-08-22 17:54:40
Functional and easy to replace for you DIYers. Happy to find it at a reasonable price on Amazon since I find myself buying a new one every few years.
D. Emilssohn
2025-08-04 20:57:49
My Empire RH-35-7 heater was always difficult to light, right from the factory. I had to hold down the "pilot" dial at least 1 minute, sometimes 2, before the pilot would "catch" and stay lit. After replacing the thermocouple with this one, it would "catch" after about 10 seconds! I measured the old thermocouple with a voltmeter before I installed this one. It would take about 45 seconds to reach 10 millivolts, and wouldn't go higher than 20 after two minutes. (It's supposed to generate 30 millivolts). Granted, it was pretty much worn out; but If you're having similar issues, don't mess around - - - about 5 minutes of work will save you a lot of aggravation. Wish I had done it a few years ago!
Anatoliy Bezruchko
2025-08-02 12:12:15
Great item, fast delivery. Thank you. Exactly what I needed.
Greg Johnson
2025-07-20 11:45:29
So far I put in about three out of 10 they all work like they should so far.
Taco_Not a Pro
2025-06-17 18:20:07
My local plumbing supply store was closed and I was forced to buy one from HD. It worked but I had to retro fit the fittings from the original resideo thermo coupler. I ordered extra resideo couplers to keep my plumbing bag.
Merten van Gerven
2025-06-15 21:13:01
Swapped this out on my gas furnace and got it up and running again right away. Happy customer!
C D Richichin
2025-04-19 10:14:22
I keep an extra one on the wall now for my old garage furnace. This replacement worked like a charm.
Wayne K.
2025-04-11 10:59:29
Worked well.
Manny
2025-03-21 15:18:13
Not a bad quality and well priced
George W
2025-03-02 10:10:30
Unfortunately this is a semi-consumable item that needs to be replaced every few years. The tip does not seem to be made of a durable material, so it'll wear out a bit earlier. It's cheap and does it's job.
Aldrexx
2025-01-13 17:04:58
It works as expected!
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