Furnace Plenum Thermostat for Bryant & Goodman, HH12ZB170, 26H66

Gas Limit Furnace Thermostat | SHL513 | L170-40F | Replaces Bryant & Goodman HH12ZB170, 26H66, SWT1258

Ensure safe and reliable furnace operation with this brand-new SHL513 gas limit thermostat. Rated L170-40F, this high-limit switch opens at 170°F and resets at 130°F, helping protect your heating system from overheating. Designed to replace Bryant® and Goodman® part numbers HH12ZB170, SWT1258 and 26H66, it offers dependable thermal protection and OEM-grade performance for residential and light commercial gas furnaces.

⚙️ Features & Benefits:

• ✅ Opens at 170°F and resets at 130°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:

HH12ZB170, 26H66, SWT1258

✅ 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.