Thermocouples keep gas space heaters and patio heaters running safely by sensing pilot flame and triggering shutoff on failure. Below is a quick comparison of five reliable replacement thermocouples and repair kits selected for compatibility with space heaters, propane patio heaters, and common gas appliances.
| Product | Brand | Primary Use |
|---|---|---|
| Thermocouple, 35.4In Universal Gas Stove Thermocouple | Keenso | Universal gas appliances, space heaters, ovens |
| Resideo 24-Inch Replacement Thermocouple | Honeywell (Resideo) | Gas furnaces, boilers, water heaters (30 mV systems) |
| 1130/1396-210 Heater Thermocouple | Viefow | Dayton / Dyna Glo convection space heaters |
| Thermocouple Replacement For Desa LP Heater | Fixitshop | Desa LP wall heaters and compatible models |
| 24″ Pilot Thermocouple Assembly | Granatan | Universal water heater and small gas appliance pilots |
Content Navigation
- Thermocouple 35.4In Universal Gas Stove (Keenso)
- Resideo 24-Inch Replacement Thermocouple (CQ100A1013/U)
- 1130/1396-210 Heater Thermocouple (Viefow)
- Thermocouple Replacement For Desa LP Heater (Fixitshop)
- 24″ Pilot Thermocouple Assembly (Granatan)
- Buying Guide: Choosing The Right Thermocouple For A Space Heater
Thermocouple 35.4In Universal Gas Stove (Keenso)
This 35.4-inch universal thermocouple is designed for broad compatibility with gas stoves, space heaters, ovens, and fireplaces. The unit includes five nuts and a universal adapter to support push-in, clamp-in, and screw-in mounts. The probe tip senses pilot flame temperature and works with solenoid valves to close gas flow if the flame fails.
Key features noted by the manufacturer include a long lead length for flexible routing, a temperature-sensing probe on top, and suitability for various burning appliances. The universal adapter aids fitting to many valve types, making this a practical option when original OEM part numbers are unknown.
Resideo 24-Inch Replacement Thermocouple (CQ100A1013/U)
The Resideo CQ100A1013/U 24-inch thermocouple is specified for 30 millivolt systems commonly found in gas furnaces, boilers, and water heaters. It includes adapter fittings to help match older or standard pilot assemblies.
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This model is suited when replacement for an OEM thermocouple used in home heating appliances is required. The product description highlights its intended use with 30 mV control systems and the inclusion of fittings to assist installation compatibility.
1130/1396-210 Heater Thermocouple (Viefow)
The 1130/1396-210 is an alternate part number replacement designed specifically for Dayton and Dyna Glo convection “trash can” style heaters ranging from 25K to 80K BTU. This targeted compatibility makes it appropriate when repairing the specified heater models.
Manufacturer notes list alternate part numbers and compatible heater model ranges. Use this thermocouple when matching OEM part numbers or when the heater manual references equivalent part identifiers for a direct replacement fit.
Thermocouple Replacement For Desa LP Heater (Fixitshop)
This replacement thermocouple is designed to replace Desa part number 098514-01 and is sold as compatible with certain Comfort Glow vent-free wall heater models. It targets specific LP heater applications where the OEM part number is known.
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Choosing a model-specific replacement is useful when restoring original operation and ensuring direct fitment in wall-mounted LP heaters. Check the heater’s documentation or the part label to confirm the OEM number before ordering.
24″ Pilot Thermocouple Assembly (Granatan)
The 24-inch pilot thermocouple assembly is presented as a universal replacement for small water heaters and certain gas appliances. Length and connector style make it a flexible option for pilot assemblies that require a standard-length thermocouple.
Compatibility listings mention models like RLP55V and several REM and SPC series units. This assembly is appropriate when a standard-length thermocouple with pilot assembly is needed and cross-reference to the appliance model shows fitment.
Buying Guide: Choosing The Right Thermocouple For A Space Heater
Selecting the correct thermocouple involves matching mechanical fit, electrical characteristics, and safety function. Below are practical considerations and comparison perspectives to guide purchase decisions.
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Compatibility And Fitment
- Confirm OEM part numbers where available (model-specific parts like Desa replacements minimize fitment issues).
- Measure lead length needed to reach the valve/pilot assembly; common lengths are 24″ and 35.4″.
- Check connector style and included adapter fittings for thread/screw, push-in, or clamp installations.
Electrical And Control System
- Verify the appliance control system voltage — many home heating systems use 30 millivolt thermocouples; mismatch can prevent proper operation.
- Thermocouples are passive sensors that generate millivoltage; ensure the replacement is specified for the same control arrangement and solenoid valve type.
Functionality And Safety Features
- Some kits include a tilt/dump switch or safety valve to cut fuel if the heater tips or flame goes out; choose kits when the original assembly included those features.
- Consider kits that include valve, thermocouple, and dump switch if multiple components show wear or if restoring full safety functionality.
Material Quality And Durability
- Brass control valves and properly insulated leads improve longevity in outdoor or high-use heaters.
- Look for products noting quality inspection or heavy-duty construction for frequent cycling environments.
Installation And Tools
- Many thermocouples install with basic hand tools; some universal adapters reduce the need for custom fittings.
- If unsure, document the existing assembly (photos) before removal; confirm connections and thread directions to avoid leaks.
Matching By Application
- For patio appliances, select kits that explicitly list compatibility with outdoor propane heaters and include tilt/dump switches for safety.
- For space heaters and convection units, use model-specific replacements (e.g., 1130/1396-210) to ensure direct replacement without modification.
- For furnaces, boilers, and water heaters, pick thermocouples specified for 30 mV systems like the Resideo 24″ model.
When To Replace Vs. Repair
- Replace the thermocouple if it fails to produce millivoltage or shows corrosion or physical damage.
- If ignition problems persist after replacing the thermocouple, inspect the pilot orifice, solenoid valve, and wiring; kits that include multiple components can be more effective when multiple parts are aged.
Comparison Perspectives
- Choose universal long-lead thermocouples for unknown models or when reach is an issue (Keenso 35.4in).
- Choose OEM-specific part numbers for exact fit and minimal modification (Desa / Fixitshop, Viefow for Dayton/Dyna Glo).
- Choose kits with valves/switches when restoring safety features on patio heaters or outdoor appliances.