Description
Reznor 204166 HSI Ignition Module Overview
The Reznor 204166 is a genuine OEM Hot Surface Ignition (HSI) module designed for use with Reznor heating equipment. This ignition control module manages the hot surface ignition sequence, ensuring safe and reliable burner start-up in commercial and industrial heating applications. Replacing a faulty ignition module with the correct OEM part helps restore proper system operation and maintains the safety integrity of your Reznor heater.
Key Features
- Genuine Reznor OEM replacement ignition module
- Hot Surface Ignition (HSI) control technology for dependable burner start-up
- Designed for direct replacement in compatible Reznor heating units
- Manages ignition sequencing to ensure safe, controlled burner operation
- Helps maintain system efficiency and safety compliance
- Built to Reznor’s OEM specifications for long-lasting performance
Application
This module is intended for use as a direct OEM replacement in Reznor commercial and industrial gas-fired heating equipment that utilizes hot surface ignition systems. Always verify compatibility with your specific Reznor unit model before installation.
Why Choose OEM Reznor Parts?
Using genuine Reznor replacement parts ensures your heating system operates as originally designed. OEM components provide the correct fit, function, and reliability — reducing the risk of nuisance lockouts, premature failures, or safety issues associated with non-OEM alternatives.







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