Best Silicon Carbide Hot Surface Ignitors for Furnaces in 2026
Silicon carbide hot surface ignitors (HSIs) are a key component in many gas furnaces, delivering quick ignition and reliable performance. This guide highlights five reliable options, focusing on compatibility, build quality, and installation practicality. Each product is evaluated for typical homeowner and technician use, including mounting options, lead wire construction, and replacement scope. Below, you’ll find a quick product snapshot and detailed sections to help you choose the right HSI for common Rheem, Lennox, Trane, Goodman, and similar units.
| Product | Brand | Model/Part | Key Benefit |
|---|---|---|---|
| 767A-372 | VNWIQ | 767A-372 | |
| 62-22868-93 (Fetechmate) | Fetechmate | 62-22868-93 | |
| DURALIGHT 62-22868-93 | OneTrip Parts | 62-22868-93 | |
| Dreyoo LH33ZS004 | Dreyoo | LH33ZS004 | |
| 767A-371 | VNWIQ | 767A-371 |
767A-372 Furnace Hot Surface Ignitor For Robertshaw 41-408
The 767A-372 is a direct replacement silicon carbide hot surface ignitor designed for Rheem, Lennox, and Trane systems. It uses a molex side lock connector with .092″ male pins, offering wide compatibility across several OEM carbide-style ignitors. Features include multiple mounting styles and compatibility with 15, 17, or 45 second ignition cycles. Each unit ships with ceramic wire nuts for easy cut-and-strip connections, aiding straightforward field installation. The high-purity Crystar silicon carbide construction provides durable thermal and electrical performance, with protective insulation around lead wires.
Key compatibility includes Rheem 62-22868-92, Robertshaw 41-408, Trane IGN34 and related variants, and listed brands from repair catalogs. While designed for broad use, verify model numbers and mounting geometry before replacement to ensure proper fit and heat delivery. This ignitor aligns with standard industry expectations for replacement parts that restore fast, reliable ignition in compatible furnaces.
62-22868-93 Furnace Ignitor For Good-man Rhe-em Ru-ud
The 62-22868-93 ignitor from Fetechmate is a silicon carbide hot surface replacement with a focus on rapid heat-up and OEM-like performance. The listing notes robust packaging to reduce damage in transit, including cushioning to protect the fragile ceramic element. It replaces multiple OEM part numbers and is compatible with several models within Goodman, Rheem, Ruud, and related brands. The product emphasizes durability and service through post-purchase support, aiming to deliver long-term reliability in typical furnace cycles. Ensure compatibility with your specific furnace model and wiring configuration before installation.
DURALIGHT Direct Replacement For Rheem Ruud Weatherking 62-22868-93
The DURALIGHT ignitor is a direct replacement for Rheem Ruud WeatherKing OEM 62-22868-93. It is marketed with a two-year replacement warranty and emphasizes an exact-fit design that requires no adapters or wiring changes. Made in the USA, this option is positioned as a straightforward upgrade for professionals seeking a reliable, stock-like substitute that minimizes installation complexity. As with all HSIs, verify model compatibility and electrical characteristics (voltage, resistance) before installation to avoid improper ignition behavior.
Dreyoo LH33ZS004 Furnace Ignitor
The Dreyoo LH33ZS004 is a direct replacement furnace ignitor compatible with Carrier, Payne, and Day models. It provides OEM-style specifications, including input AC 116V 60Hz, steady current range 2.7A-3.9A, and a cold resistance specification between 40-200 Ω. The unit’s dimensions approximate 8.3 inches long, 2 inches wide, and 1.1 inches thick, aligning with typical HSI form factors. The temperature rise is designed to reach ignition temperatures quickly (about 36 seconds). This option emphasizes compatibility with common Carrier/Payne families and similar systems that rely on HSIs for ignition reliability.
767A-371 Silicon Carbide Ignitor For Armstrong/Norton
The 767A-371 ignitor is a VNWIQ-branded universal silicon carbide hot surface ignitor marketed for a range of models including Armstrong, Norton, Williamson, and White-Rodgers lines. Features highlight rapid heating to ignition temperatures and compatibility with numerous replacement strings and part numbers (e.g., 62-22441-01, 41-402, 105141000). The part is designed to fit a broad set of furnaces and repair scenarios, and it notes compatibility with a variety of common OEM and aftermarket references. When replacing an HSI, confirm the exact furnace model and supported ignition cycle timing to ensure reliable operation.
Buying Guide
- Model compatibility: HSIs vary by furnace brand and model. Use exact part numbers and cross-reference the OEM equivalents listed by the supplier to confirm fit before purchase.
- Electrical specifications: Check voltage, current, and resistance (Ω) to match your furnace’s control system and avoid ignition failure or short life.
- Lead wires and insulation: Look for high-temperature fiberglass insulation and robust lead wires to withstand repeated heating cycles and prevent electrical faults.
- Mounting and form factor: Confirm ignition element length, width, and mounting style aligns with your furnace’s burner cabinet and bracket hardware.
- Durability vs. price: Higher-purity silicon carbide and protective coatings often offer longer service life, but compare warranty terms and replacement policies for peace of mind.
- Warranty and support: Some listings offer warranties (e.g., two years). Consider vendors that provide post-sale support and clear return policies.
- Damage risk in transit: Fragile ceramic HSIs can be damaged in shipping. Look for sellers that emphasize protective packaging and inspected units.
- Installation considerations: If you are not comfortable with electrical wiring or furnace ignition systems, hire a licensed technician to perform replacement.
- Avoid price-only decisions: Cheaper HSIs may have shorter lifespans or less consistent ignition performance. Balance cost with reliability and compatibility.
- Cross-compatibility awareness: Many listings claim broad compatibility; verify the specific model numbers your furnace requires to reduce the risk of mismatches.