Carrier HH18HA507 Limit Switch
The Carrier HH18HA507 Limit Switch is a critical safety component engineered for precise thermal monitoring in high-output Carrier, Bryant, and Payne furnaces. This OEM furnace limit switch serves as a high-limit safety cut-out, designed to interrupt the electrical circuit if internal temperatures exceed safe operating parameters. Featuring an auto reset function, the switch automatically restores the circuit once temperatures drop below the 145°F threshold, ensuring continuous system operation without manual intervention after a temporary thermal event.
Built with a large base design for secure surface mounting and stable heat transfer, the HH18HA507 is a direct HH18HA507A replacement part for a wide range of gas-fired equipment. It is calibrated for a specific 145-185°F temperature range, with a cut-out (open) at 185°F and a cut-in (close) at 145°F. This HVAC high limit control is built to withstand rigorous heat cycling, maintaining system integrity and protection against component overheating in models such as the 58DLX and 312JAV series.
Key Benefits:- Genuine OEM reliability ensures exact fitment and factory-specified thermal calibration for Carrier-family equipment.
- Automatic reset capability eliminates the need for manual resets, reducing nuisance service calls after minor air-restriction events.
- Universal mounting orientation and large-base footprint provide robust installation flexibility and consistent thermal response.
- Overheat protection prevents heat exchanger damage by strictly enforcing the 185°F thermal ceiling.
- How do I know if my furnace limit switch is bad? If your furnace blower runs constantly while the burners fail to ignite, or if the system short-cycles, the limit switch may be stuck open or improperly sensing temperature.
- Can this part replace other HH18 series switches? This part is specifically calibrated for a 185°F limit. Always verify the temperature stamping on your existing switch; using a switch with the wrong thermal rating can cause safety hazards or premature failure.
- Is the HH18HA507 compatible with Bryant and Payne units? Yes, as a genuine Carrier Corp. component, it is the standard replacement for many Bryant and Payne gas-fired furnaces.
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.
Carrier HH18HA507 Limit Switch
The Carrier HH18HA507 Limit Switch is a critical safety component engineered for precise thermal monitoring in high-output Carrier, Bryant, and Payne furnaces. This OEM furnace limit switch serves as a high-limit safety cut-out, designed to interrupt the electrical circuit if internal temperatures exceed safe operating parameters. Featuring an auto reset function, the switch automatically restores the circuit once temperatures drop below the 145°F threshold, ensuring continuous system operation without manual intervention after a temporary thermal event.
Built with a large base design for secure surface mounting and stable heat transfer, the HH18HA507 is a direct HH18HA507A replacement part for a wide range of gas-fired equipment. It is calibrated for a specific 145-185°F temperature range, with a cut-out (open) at 185°F and a cut-in (close) at 145°F. This HVAC high limit control is built to withstand rigorous heat cycling, maintaining system integrity and protection against component overheating in models such as the 58DLX and 312JAV series.
Key Benefits:- Genuine OEM reliability ensures exact fitment and factory-specified thermal calibration for Carrier-family equipment.
- Automatic reset capability eliminates the need for manual resets, reducing nuisance service calls after minor air-restriction events.
- Universal mounting orientation and large-base footprint provide robust installation flexibility and consistent thermal response.
- Overheat protection prevents heat exchanger damage by strictly enforcing the 185°F thermal ceiling.
- How do I know if my furnace limit switch is bad? If your furnace blower runs constantly while the burners fail to ignite, or if the system short-cycles, the limit switch may be stuck open or improperly sensing temperature.
- Can this part replace other HH18 series switches? This part is specifically calibrated for a 185°F limit. Always verify the temperature stamping on your existing switch; using a switch with the wrong thermal rating can cause safety hazards or premature failure.
- Is the HH18HA507 compatible with Bryant and Payne units? Yes, as a genuine Carrier Corp. component, it is the standard replacement for many Bryant and Payne gas-fired furnaces.
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 Carrier HH18HA507 Limit Switch is a critical safety component engineered for precise thermal monitoring in high-output Carrier, Bryant, and Payne furnaces. This OEM furnace limit switch serves as a high-limit safety cut-out, designed to interrupt the electrical circuit if internal temperatures exceed safe operating parameters. Featuring an auto reset function, the switch automatically restores the circuit once temperatures drop below the 145°F threshold, ensuring continuous system operation without manual intervention after a temporary thermal event.
Built with a large base design for secure surface mounting and stable heat transfer, the HH18HA507 is a direct HH18HA507A replacement part for a wide range of gas-fired equipment. It is calibrated for a specific 145-185°F temperature range, with a cut-out (open) at 185°F and a cut-in (close) at 145°F. This HVAC high limit control is built to withstand rigorous heat cycling, maintaining system integrity and protection against component overheating in models such as the 58DLX and 312JAV series.
Key Benefits:- Genuine OEM reliability ensures exact fitment and factory-specified thermal calibration for Carrier-family equipment.
- Automatic reset capability eliminates the need for manual resets, reducing nuisance service calls after minor air-restriction events.
- Universal mounting orientation and large-base footprint provide robust installation flexibility and consistent thermal response.
- Overheat protection prevents heat exchanger damage by strictly enforcing the 185°F thermal ceiling.
- How do I know if my furnace limit switch is bad? If your furnace blower runs constantly while the burners fail to ignite, or if the system short-cycles, the limit switch may be stuck open or improperly sensing temperature.
- Can this part replace other HH18 series switches? This part is specifically calibrated for a 185°F limit. Always verify the temperature stamping on your existing switch; using a switch with the wrong thermal rating can cause safety hazards or premature failure.
- Is the HH18HA507 compatible with Bryant and Payne units? Yes, as a genuine Carrier Corp. component, it is the standard replacement for many Bryant and Payne gas-fired furnaces.
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.
