
Laars Heating Systems 2400-020 Thermal Cut Out
The Laars Heating Systems 2400-020 Thermal Cut Out is a mission-critical safety component designed for high-capacity and residential boiler systems. Engineered to function as a fail-safe manual or automatic reset limit, this Laars TCO replacement monitors internal heat levels to prevent catastrophic equipment failure. Specifically compatible with the Laars Mark II 9600 series, including HWG and CB models (sizes 150-250), as well as H, HW, and HP residential series units (sizes 60-130), this part ensures precise electrical circuit interruption if temperature thresholds are exceeded. For contractors, maintaining boiler safety limit switches like the 2400-020 is essential for protecting the heat exchanger from thermal stress and ensuring long-term system integrity. This genuine Laars HVAC part features a rugged construction capable of withstanding the high-ambient conditions of a boiler cabinet. When troubleshooting Laars boiler overheating or "no-heat" calls, verifying the continuity of this thermal cut out is a standard diagnostic step to restore code-compliant operation and safe combustion cycles.
Key Benefits
- Ensures boiler overheating protection by interrupting the electrical circuit before temperature limits cause permanent damage.
- Designed specifically for compatibility with Laars 9600 HWG, CB, H, HW, and HP series boilers.
- Compact high-grade construction facilitates a direct mechanical fit within the existing sensor bracketry.
- Protects internal HVAC control systems and heat exchangers from high-limit excursions during operation.
- Critical OEM safety component for maintaining local mechanical code compliance and operational reliability.
Common Questions
How do I know if the Laars 2400-020 needs replacement?
If your boiler is not firing and you have high-limit error codes, use a multimeter to check for continuity across the terminals. A tripped or failed cut out will show an open circuit. Many of these safety devices are designed to fail open if they experience a significant over-temperature event to protect the appliance.
Is this part compatible with all Laars models?
This specific high-limit thermal switch is engineered for the Mark II 9600 models (HWG/CB) and certain residential H/HP series. Always verify your specific model number and serial range against the manufacturer’s parts list to ensure the correct temperature rating and terminal orientation.
Can I bypass the thermal cut out for testing?
While technicians may briefly jump a safety during diagnostics, never leave a thermal cut out bypassed during operation. This part is a vital fail-safe that prevents fire hazards and heat exchanger meltdowns should the primary operating control fail.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $146.70
-65%$146.70
$51.34Laars Heating Systems 2400-020 Thermal Cut Out
The Laars Heating Systems 2400-020 Thermal Cut Out is a mission-critical safety component designed for high-capacity and residential boiler systems. Engineered to function as a fail-safe manual or automatic reset limit, this Laars TCO replacement monitors internal heat levels to prevent catastrophic equipment failure. Specifically compatible with the Laars Mark II 9600 series, including HWG and CB models (sizes 150-250), as well as H, HW, and HP residential series units (sizes 60-130), this part ensures precise electrical circuit interruption if temperature thresholds are exceeded. For contractors, maintaining boiler safety limit switches like the 2400-020 is essential for protecting the heat exchanger from thermal stress and ensuring long-term system integrity. This genuine Laars HVAC part features a rugged construction capable of withstanding the high-ambient conditions of a boiler cabinet. When troubleshooting Laars boiler overheating or "no-heat" calls, verifying the continuity of this thermal cut out is a standard diagnostic step to restore code-compliant operation and safe combustion cycles.
Key Benefits
- Ensures boiler overheating protection by interrupting the electrical circuit before temperature limits cause permanent damage.
- Designed specifically for compatibility with Laars 9600 HWG, CB, H, HW, and HP series boilers.
- Compact high-grade construction facilitates a direct mechanical fit within the existing sensor bracketry.
- Protects internal HVAC control systems and heat exchangers from high-limit excursions during operation.
- Critical OEM safety component for maintaining local mechanical code compliance and operational reliability.
Common Questions
How do I know if the Laars 2400-020 needs replacement?
If your boiler is not firing and you have high-limit error codes, use a multimeter to check for continuity across the terminals. A tripped or failed cut out will show an open circuit. Many of these safety devices are designed to fail open if they experience a significant over-temperature event to protect the appliance.
Is this part compatible with all Laars models?
This specific high-limit thermal switch is engineered for the Mark II 9600 models (HWG/CB) and certain residential H/HP series. Always verify your specific model number and serial range against the manufacturer’s parts list to ensure the correct temperature rating and terminal orientation.
Can I bypass the thermal cut out for testing?
While technicians may briefly jump a safety during diagnostics, never leave a thermal cut out bypassed during operation. This part is a vital fail-safe that prevents fire hazards and heat exchanger meltdowns should the primary operating control fail.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Laars Heating Systems 2400-020 Thermal Cut Out is a mission-critical safety component designed for high-capacity and residential boiler systems. Engineered to function as a fail-safe manual or automatic reset limit, this Laars TCO replacement monitors internal heat levels to prevent catastrophic equipment failure. Specifically compatible with the Laars Mark II 9600 series, including HWG and CB models (sizes 150-250), as well as H, HW, and HP residential series units (sizes 60-130), this part ensures precise electrical circuit interruption if temperature thresholds are exceeded. For contractors, maintaining boiler safety limit switches like the 2400-020 is essential for protecting the heat exchanger from thermal stress and ensuring long-term system integrity. This genuine Laars HVAC part features a rugged construction capable of withstanding the high-ambient conditions of a boiler cabinet. When troubleshooting Laars boiler overheating or "no-heat" calls, verifying the continuity of this thermal cut out is a standard diagnostic step to restore code-compliant operation and safe combustion cycles.
Key Benefits
- Ensures boiler overheating protection by interrupting the electrical circuit before temperature limits cause permanent damage.
- Designed specifically for compatibility with Laars 9600 HWG, CB, H, HW, and HP series boilers.
- Compact high-grade construction facilitates a direct mechanical fit within the existing sensor bracketry.
- Protects internal HVAC control systems and heat exchangers from high-limit excursions during operation.
- Critical OEM safety component for maintaining local mechanical code compliance and operational reliability.
Common Questions
How do I know if the Laars 2400-020 needs replacement?
If your boiler is not firing and you have high-limit error codes, use a multimeter to check for continuity across the terminals. A tripped or failed cut out will show an open circuit. Many of these safety devices are designed to fail open if they experience a significant over-temperature event to protect the appliance.
Is this part compatible with all Laars models?
This specific high-limit thermal switch is engineered for the Mark II 9600 models (HWG/CB) and certain residential H/HP series. Always verify your specific model number and serial range against the manufacturer’s parts list to ensure the correct temperature rating and terminal orientation.
Can I bypass the thermal cut out for testing?
While technicians may briefly jump a safety during diagnostics, never leave a thermal cut out bypassed during operation. This part is a vital fail-safe that prevents fire hazards and heat exchanger meltdowns should the primary operating control fail.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












