Gas Limit Furnace Thermostat for B137001, HH12ZA178A, 26H6501

Gas Limit Furnace Thermostat | SHL502 | L180-30F | Replaces Goodman, Carrier, Lennox

Ensure safe and efficient furnace operation with this brand-new SHL502 gas limit thermostat. Rated L180-30F, this high-limit switch is designed to open at 180°F and reset at 150°F, protecting your heating system from overheating. Compatible with select Goodman®, Carrier®, and Lennox® models, it’s a direct replacement for several OEM part numbers and ideal for residential and light commercial gas furnaces.

⚙️ Features & Benefits:

• ✅ Opens at 180°F and resets at 150°F (30°F differential)
• Designed for use in gas furnaces and heating systems
• Durable construction for long-lasting performance
• Brand New – Unused and ready to install
• Compact design for easy replacement and universal fit

Replaces Part Numbers:

B137001, HH12ZA178A, 26H6501, L39-180

✅ Compatible Brands:

Goodman, Carrier, Lennox, and other OEM-branded gas furnaces. Please refer to your unit’s service manual or model tag to confirm compatibility.

️ Installation Tips:

• Disconnect power and shut off gas supply before servicing
• Locate the existing limit thermostat on the furnace heat exchanger or plenum
• Remove mounting screws and disconnect wire terminals
• Install new thermostat in the same orientation and reconnect wires securely
• ✅ Restore power and gas, then test furnace operation and safety cutoff

Reliable protection. OEM-grade safety. Restore your furnace’s performance with this high-limit thermostat replacement.