Furnace Plenum Thermostat for Bryant & Goodman, HH12ZB180, 37H73

Gas Limit Furnace Thermostat | SHL514 | L180-40F | Replaces Bryant & Goodman HH12ZB180, 37H73

Protect your furnace from overheating with this brand-new SHL514 gas limit thermostat. Rated L180-40F, this high-limit switch opens at 180°F and resets at 140°F, helping maintain safe operating temperatures in residential and light commercial gas furnaces. Designed to replace Bryant® and Goodman® part numbers HH12ZB180 and 37H73, it delivers dependable thermal protection and OEM-grade performance.

⚙️ Features & Benefits:

• ✅ Opens at 180°F and resets at 140°F (40°F differential)
• Designed for use in gas furnaces and HVAC systems
• Durable construction with secure mounting tabs
• Brand New – Unused and ready to install
• Compact design for easy replacement and universal fit

Replaces Part Numbers:

HH12ZB180, 37H73, L180-40F

✅ Fits Models:

Compatible with select Bryant and Goodman gas furnace models. 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.