Best Thermopile for Gas Fireplace: Top Replacements for Reliable Ignition
Choosing a reliable thermopile is essential for safe, efficient ignition in gas fireplaces, fryers, water heaters, and related appliances. The following selections are premium replacement thermopiles designed to deliver stable 750 mV output, durable operation, and compatibility with common pilot assemblies. This guide highlights five strong options, their specs, and how to choose the right one for your equipment. The focus is on 24″ and 36″ lengths with typical operating temperatures around 700–750°C for dependable ignition performance.
Summary of selected products
| Product | Brand | Length | Output (mV) | Key Strengths |
|---|---|---|---|---|
| 750℃ Thermopile Generator 24″ (B074KFT8RY) | METER STAR | 24″ | 750 mV | Spiral and plug-in options; wide resistance range |
| 750mV Thermopile for Fireplace (B07LDBHJGH) | METER STAR | 24″ | ~750 mV | Broad compatibility; multiple lengths; durable wrap |
| MENSI 24″ 750Millivolt Thermopile (B074DQ1G28) | MENSI | 24″ | 750 mV | CSA certified; broad appliance compatibility |
| Ganivsor 24″ Thermopile (B0CFTKJ8SS) | Ganivsor | 24″ | 750 mV | Premium lead wire; tested replacement |
| Ganivsor 36″ Thermopile (B0CFTMS5PP) | Ganivsor | 36″ | 750 mV | Longer length option; compatible with many pilots |
750℃ Thermopile 24″ Replacement — METER STAR
The 24″ thermopile from METER STAR is designed for gas fireplaces and other pilot-driven appliances. It features an internal resistance range between 1,500 mΩ and 4,500 mΩ at 25°C, aligning with many heater pilot systems. Rated for high-temperature operation around 700–750°C, this model supports either spiral wiring or a two-pole plug-in connection, giving installers flexible mounting options. The unit emphasizes stable ignition performance and compatibility with a wide array of 24″ pilots. This makes it a solid choice for standard gas fireplaces and related equipment requiring a reliable 750 mV output.
Key details:
- Length: 24 inches
- Normal working temperature: 700–750°C
- Internal resistance: 1,500–4,500 mΩ
- Connections: Spiral or two-pole plug-in
750mV Thermopile for Fireplaces — METER STAR (24″ / Aluminum)
This thermopile is designed for broad compatibility across fireplace and stove systems, including water heaters and ovens that rely on pilot flames. The package notes two length options (24″ and 36″), with a glass fiber wrapping and an aluminum envelope for high-temperature resilience. It emphasizes energy efficiency through stable 750 mV generation and a robust internal resistance around 1,500–4,500 mΩ, ensuring a reliable ignition sequence while minimizing fuel waste. It is positioned as a versatile replacement for leading brands in 24″ pilot assemblies.
MENSI 24″ 750Millivolt Thermopile Generator
The MENSI thermopile is a CSA-certified replacement designed for fireplace pilot burner assemblies and related equipment like fryers and water heaters. Its internal resistance is listed around 4,000 mΩ at 25°C, with steady heating voltage typically exceeding 750 mV. The guide specifies that it normally heats a pilot to the ignition point in about 60 seconds, with precise alignment necessary for the flame to be directed toward the sensor head. It’s compatible with a wide range of models and is marketed as an all-purpose thermopile suitable for Heat n Glo, Heatilator, and similar brands.
Ganivsor 24″ Thermopile Generator — 750 mV
The Ganivsor 24″ model specifies an internal resistance near 4,000 mΩ at 25°C and a heating voltage above 750 mV. It includes a 24″ length with glass fiber wire and supports both spiral and two-pole plug-in connections, making it compatible with a range of fireplace pilot assemblies, fryers, and other heated appliances. The replacement is positioned as a direct substitute for numerous Heat n Glo, Heatilator, and PITCO models, and is designed for quick ignition and reliable performance in everyday use.
Ganivsor 36″ Thermopile Generator — 750 mV
The 36″ Ganivsor thermopile extends the same 750 mV output with a longer lead for installations where the pilot assembly or heater position requires extra reach. It maintains the 4,000 mΩ resistance range and supports spiral or plug-in connections. This model is designed to fit into larger fireplace and water heater configurations and is advertised as a replacement for common models including Heat n Glo and Heatilator 36″ lead thermopiles. It emphasizes reliable ignition timing and compatibility with multiple pilot configurations.
5 Pack Thermopile — 36″ 750mV (gtpartes)
This 5-pack thermopile option from gtpartes provides multiple replacements for ongoing maintenance of gas fireplaces, water heaters, fryers, and ovens. It notes 36″ length with 750 mV output and an internal resistance range of 1,500–4,500 mΩ, ensuring compatibility with a wide array of pilots like Q313A and related models. The package is pitched as a cost-effective solution for households with several units or repeated maintenance needs, offering quick replacement and consistent ignition performance across devices.
Kingdder 5 Pack — 36″ Thermopile Generators
The Kingdder 5-pack provides a ready supply of 36″ thermopile generators with 750 mV output and internal resistance ranging from 1,500 to 4,500 mΩ. The kit highlights multiple connection options, including screw-on or bipolar plug-in terminals, facilitating installation in a variety of pilot assemblies across fireplaces, fryers, water heaters, and ovens. This package targets both regular maintenance and emergency replacement, emphasizing dependable ignition in demanding environments.
Buying Guide: Key Considerations For Selecting A Thermopile
- Length compatibility: Most 24″ and 36″ models fit common pilot assemblies; verify the exact length of your existing thermopile and the pilot alignment before purchasing.
- Output voltage and resistance: A stable 750 mV output with an internal resistance range around 1,500–4,500 mΩ at 25°C ensures reliable ignition for typical gas appliances.
- Temperature tolerance: Look for units rated for normal operating temperatures near 700–750°C to withstand continuous heating without degradation.
- Connection type: Choose spiral-wired or plug-in (two-pole) configurations based on your current wiring and ease of installation.
- Material durability: Fiberglass wrapping and protective envelopes (aluminum or similar) enhance heat resistance and longevity in harsh environments.
- CSA/UL certifications: CSA certification (as listed for some models) can indicate compliance with safety and performance standards for residential appliances.
- Brand and replacement compatibility: Ensure the thermopile is listed as a replacement for your specific model family (Heat n Glo, Heatilator, PITCO, Southbend, Anets, etc.).
- Package quantity: If you manage multiple units, consider multi-pack offerings for cost efficiency and convenient stocking.
When selecting a thermopile, cross-check the model numbers of your pilot assemblies and ignition systems. While many 24″ and 36″ thermopiles claim broad compatibility, small differences in lead type, mounting, and insulation can affect fit and ignition timing. For safety and reliability, prefer replacements that specify standard millivolt outputs, stable ignition performance, and compatibility with your appliance’s pilot burner model.