Armstrong Furnace R40154B025 Limit Switch
The Armstrong Furnace R40154B025 Limit Switch is a critical safety component engineered specifically for high-efficiency HVAC systems. This L130F-30 flame rollout limit switch is designed to monitor internal furnace temperatures, automatically breaking the electrical circuit if the heat exceeds the 130°F safety threshold. This genuine Armstrong replacement part ensures your heating system operates within manufacturer specifications, preventing heat exchanger damage and hazardous operating conditions. Also identified as part number 40154B025, this switch features a fixed temperature setting with a 30°F differential for precise thermal regulation. Whether you are performing a furnace limit switch replacement or routine seasonal maintenance, utilizing OEM components like the R40154B025 maintains the integrity of your HVAC equipment and ensures reliable ignition sequences. Its durable construction is built to withstand the rigorous cycling of residential furnaces, providing long-term reliability for your climate control system.
- Precise Thermal Protection: Features a 130°F fixed trip point to prevent furnace overheating.
- OEM Compatibility: Replaces both Armstrong R40154B025 and 40154B025 for a perfect fit.
- Enhanced Safety: Effectively interrupts the burner circuit during restricted airflow or high-temperature events.
- Durable Construction: Engineered to handle high-frequency cycling in demanding heating environments.
Common Questions
How do I know if my Armstrong furnace limit switch is bad?
If your furnace blower runs constantly or the burners shut off shortly after ignition, the L130F-30 limit switch may have tripped or failed. Testing for continuity with a multimeter is the standard diagnostic step.
Is the R40154B025 the same as the 40154B025?
Yes, the Armstrong R40154B025 and 40154B025 are identical parts and can be used interchangeably in compatible HVAC units.
Where is the limit switch located in my furnace?
The furnace high limit switch is typically mounted on the plenum or the burner shield where it can accurately monitor the internal air temperature.
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: $106.72
-65%$106.72
$37.35Armstrong Furnace R40154B025 Limit Switch
The Armstrong Furnace R40154B025 Limit Switch is a critical safety component engineered specifically for high-efficiency HVAC systems. This L130F-30 flame rollout limit switch is designed to monitor internal furnace temperatures, automatically breaking the electrical circuit if the heat exceeds the 130°F safety threshold. This genuine Armstrong replacement part ensures your heating system operates within manufacturer specifications, preventing heat exchanger damage and hazardous operating conditions. Also identified as part number 40154B025, this switch features a fixed temperature setting with a 30°F differential for precise thermal regulation. Whether you are performing a furnace limit switch replacement or routine seasonal maintenance, utilizing OEM components like the R40154B025 maintains the integrity of your HVAC equipment and ensures reliable ignition sequences. Its durable construction is built to withstand the rigorous cycling of residential furnaces, providing long-term reliability for your climate control system.
- Precise Thermal Protection: Features a 130°F fixed trip point to prevent furnace overheating.
- OEM Compatibility: Replaces both Armstrong R40154B025 and 40154B025 for a perfect fit.
- Enhanced Safety: Effectively interrupts the burner circuit during restricted airflow or high-temperature events.
- Durable Construction: Engineered to handle high-frequency cycling in demanding heating environments.
Common Questions
How do I know if my Armstrong furnace limit switch is bad?
If your furnace blower runs constantly or the burners shut off shortly after ignition, the L130F-30 limit switch may have tripped or failed. Testing for continuity with a multimeter is the standard diagnostic step.
Is the R40154B025 the same as the 40154B025?
Yes, the Armstrong R40154B025 and 40154B025 are identical parts and can be used interchangeably in compatible HVAC units.
Where is the limit switch located in my furnace?
The furnace high limit switch is typically mounted on the plenum or the burner shield where it can accurately monitor the internal air temperature.
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 Armstrong Furnace R40154B025 Limit Switch is a critical safety component engineered specifically for high-efficiency HVAC systems. This L130F-30 flame rollout limit switch is designed to monitor internal furnace temperatures, automatically breaking the electrical circuit if the heat exceeds the 130°F safety threshold. This genuine Armstrong replacement part ensures your heating system operates within manufacturer specifications, preventing heat exchanger damage and hazardous operating conditions. Also identified as part number 40154B025, this switch features a fixed temperature setting with a 30°F differential for precise thermal regulation. Whether you are performing a furnace limit switch replacement or routine seasonal maintenance, utilizing OEM components like the R40154B025 maintains the integrity of your HVAC equipment and ensures reliable ignition sequences. Its durable construction is built to withstand the rigorous cycling of residential furnaces, providing long-term reliability for your climate control system.
- Precise Thermal Protection: Features a 130°F fixed trip point to prevent furnace overheating.
- OEM Compatibility: Replaces both Armstrong R40154B025 and 40154B025 for a perfect fit.
- Enhanced Safety: Effectively interrupts the burner circuit during restricted airflow or high-temperature events.
- Durable Construction: Engineered to handle high-frequency cycling in demanding heating environments.
Common Questions
How do I know if my Armstrong furnace limit switch is bad?
If your furnace blower runs constantly or the burners shut off shortly after ignition, the L130F-30 limit switch may have tripped or failed. Testing for continuity with a multimeter is the standard diagnostic step.
Is the R40154B025 the same as the 40154B025?
Yes, the Armstrong R40154B025 and 40154B025 are identical parts and can be used interchangeably in compatible HVAC units.
Where is the limit switch located in my furnace?
The furnace high limit switch is typically mounted on the plenum or the burner shield where it can accurately monitor the internal air temperature.
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.
