Resideo CQ100A1021 18-Inch Replacement Thermocouple for Gas Furnaces, Boilers and Water Heaters
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Resideo CQ100A1021 18-Inch Replacement Thermocouple for Gas Furnaces, Boilers and Water Heaters

4.4/5
Product ID: 8824111
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Details

  • Brand
    RESIDEO
  • Item dimensions L x W x H
    0.25 x 0.25 x
  • Material
    Metal
  • Maximum Supply Voltage
    3E+1
  • Measurement Accuracy
    +/- 1% of the
⚔30mV system compatibility
šŸ“18-inch precision length
šŸ”„1400°F max temp rating

Description

šŸ”„ 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.

Large manufacture image 1Large manufacture image 2

Specifications

BrandRESIDEO
Item dimensions L x W x H0.25 x 0.25 x 21 inches
MaterialMetal
Maximum Supply Voltage3E+1 Millivolts
Measurement Accuracy+/- 1% of the measured value or +/- 10 degrees
Mounting TypeAdapter Mount
Output TypeAnalog Voltage
Sensing Distance1 Inches
Upper Temperature Rating1.4E+3 Degrees Fahrenheit
UPC085267870283
Global Trade Identification Number00085267870283
ManufacturerResideo
StyleModern
Part NumberCQ100A1021
Item Weight1.44 ounces
Product Dimensions0.25 x 0.25 x 21 inches
Country of OriginChina
Item model numberCQ100A1021
Is Discontinued By ManufacturerNo
Size18"
ColorCopper
ShapeShape
Item Package Quantity1
Measurement SystemImperial
Included Componentswater heaters
Batteries Included?No
Batteries Required?No
Warranty DescriptionAs labelled

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Reviews

4.4

All from verified purchases

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 šŸ˜‰

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.

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TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Resideo Cq100a1021 18 Inch Replacement Thermocouple For Gas Furnaces Boilers | Desertcart Tajikistan