Furnace Plenum Thermostat for Bryant & York, HH12ZB140, 025-29041-005

Gas Limit Furnace Thermostat | SHL505 | Replaces Bryant & York HH12ZB140, 025-29041-005 | OEM-Compatible

Ensure safe and efficient furnace operation with this brand-new SHL505 gas limit thermostat. Designed to replace Bryant® and York® part numbers HH12ZB140 and 025-29041-005, this OEM-style high-limit switch helps protect your heating system from overheating by interrupting power when temperatures exceed safe thresholds. Ideal for residential and light commercial gas furnaces.

Features & Benefits:

• OEM-compatible replacement for HH12ZB140 and 025-29041-005


• Opens at designated high-limit temperature to prevent overheating


• Designed for use in gas furnaces and HVAC systems


• Durable construction with secure mounting tabs


• Brand New Unused and ready to install

Replaces Part Numbers:

HH12ZB140, 025-29041-005

Fits Models:

Compatible with select Bryant and York gas furnace models. Please refer to your units 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 furnaces performance with this high-limit thermostat replacement.