Description
Keep your heating system operating safely and efficiently with the Reznor 85449 Auto Limit Switch, a genuine OEM control designed to protect your unit heater from overheating and ensure reliable operation in demanding environments. This compact and robust limit control switch is a critical safety component in many Reznor gas fired and unit heater systems.
Key Features
- OEM Replacement Part: Manufactured to Reznor’s exact specifications for seamless fit and dependable performance in compatible HVAC equipment.
- 140–200°F Temperature Range: Designed to open and interrupt operation at approximately 200°F and reset automatically as temperatures cool down, helping to prevent overheating.
- Auto Reset Function: Automatically restores normal function when temperature returns to a safe range, reducing unnecessary service calls.
- Compact & Durable: Built to withstand the rigors of commercial heating environments while maintaining reliable, long lasting service.
- Wide Compatibility: Commonly used in a range of Reznor unit heaters and gas fired applications that require high temperature safety control.






