Resideo CQ100A1021 18-Inch Replacement Thermocouple for Gas Furnaces, Boilers and Water Heaters
Details
- BrandRESIDEO
- Item dimensions L x W x H0.25 x 0.25 x
- MaterialMetal
- Maximum Supply Voltage3E+1
- Measurement Accuracy+/- 1% of the
Description
🔥 Upgrade your home's heartbeat with precision and power!
- BUILT TO LAST - Heavy-duty metal construction ensures durability and long-term reliability under extreme heat.
- VERSATILE COMPATIBILITY - Perfect replacement for gas furnaces, boilers, water heaters, and room heaters—stay warm without worry.
- EFFORTLESS UNIVERSAL FIT - Adapter mounts seamlessly on push-in, clamp-in, and screw-in burners for instant upgrade.
- PRECISION SAFETY CONTROL - Designed for 30 millivolt systems with ±1% accuracy to keep your gas appliances running safely.
- DIY FRIENDLY INSTALLATION - Positive positioning and included adapter fittings make setup quick and hassle-free.
The Resideo CQ100A1021 is an 18-inch replacement thermocouple engineered for gas furnaces, boilers, and water heaters. Featuring a heavy-duty metal build, it supports 30 millivolt systems with ±1% measurement accuracy and withstands temperatures up to 1400°F. Its universal adapter mount fits most pilot burners, enabling easy DIY installation and reliable, long-lasting safety control.
Specifications
| Brand | RESIDEO |
| Item dimensions L x W x H | 0.25 x 0.25 x 21 inches |
| Material | Metal |
| Maximum Supply Voltage | 3E+1 Millivolts |
| Measurement Accuracy | +/- 1% of the measured value or +/- 10 degrees |
| Mounting Type | Adapter Mount |
| Output Type | Analog Voltage |
| Sensing Distance | 1 Inches |
| Upper Temperature Rating | 1.4E+3 Degrees Fahrenheit |
| UPC | 085267870283 |
| Global Trade Identification Number | 00085267870283 |
| Manufacturer | Resideo |
| Style | Modern |
| Part Number | CQ100A1021 |
| Item Weight | 1.44 ounces |
| Product Dimensions | 0.25 x 0.25 x 21 inches |
| Country of Origin | China |
| Item model number | CQ100A1021 |
| Is Discontinued By Manufacturer | No |
| Size | 18" |
| Color | Copper |
| Shape | Shape |
| Item Package Quantity | 1 |
| Measurement System | Imperial |
| Included Components | water heaters |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | As labelled |
Have a Question? See What Others Asked
Reviews
M**K
Works just fine
No issues what-so-ever. Fast shipping. Cheap price.
A**D
Find your length
Works as stated
T**R
great product and great seller
I had to purchase one of these locally last year and it cost a fortune and lasted only one year! This one is affordable and seems to work fine. They are getting rare as most furnaces use controller boards anymore. This is a thermo-electric generator that creates enough power from the heat of the pilot flame to hold the gas valve open. If it gets cold, the valve closes and the gas shuts off. Its simple and effective--not some complicated thing that will fail when you need it most.
S**E
It appears to be the correct thermal coupler needed for ...
It appears to be the correct thermal coupler needed for my Paloma hot water heater. I've had this part break on my Paloma a few times now about every 3 years I need a new one, so I am simply investing for the future. The next time my Pilot light on my Paloma goes out, I will have the correct part to fix my problem.
L**N
fit on coleman heater for mobilehome 30 yrs old 😉
happy wife? happy life just sample little thing make it big different my old coleman heater working again after few months broken 🤣🤣🤣🤣 same part was sent super happy
B**N
does its job
once installed it does it's job perfectly well. installing was more difficult than it needed to be, the threads on the nut are not all that cleanly made and were a struggle to get started. would have preferred they use a brass nut like most thermocouples, the threads on those have cleaner threads in my experience.
T**N
OK
A little shorted than expected but still fit and worked perfectly. My WW2 era Ceiling-hung Reznor heater is back in action!
S**E
Works with my water heater
I went to take a shower and there was no hot water. I checked and the pilot was out and I was unable to light it. Fortunately, Amazon had this with 2 day delivery so I didn't have to suffer very long. It took me about 15 minutes to install and get the water heater working again.
Common Questions
Trustpilot
1 day ago
2 months ago
