Gas Limit Furnace Thermostat for Bryant, P331-2203, HH12ZA176A, HH12ZA174A

Gas Limit Furnace Thermostat | SHL501 L170-40F | Replaces Bryant P331-2203, HH12ZA176A, HH12ZA174A

Ensure safe and reliable furnace operation with this brand-new gas limit furnace thermostat. Designed to replace Bryant® part number P331-2203 and compatible with HH12ZA176A, HH12ZA174A, and other OEM references, this L170-40F thermostat helps regulate high-limit temperature cutoffs to prevent overheating. Ideal for residential and light commercial gas furnaces.

Features & Benefits:

• OEM-compatible replacement for L170-40F thermostats


• Opens at 170°F and resets at 130°F (40°F differential)


• Designed for use in gas furnaces and heating systems


• Durable construction for long-lasting performance


• Brand New – Unused and ready to install

Replaces Part Numbers:

P331-2203, HH12ZA176A, HH12ZA174A, L39-179

Fits Models:

Compatible with select Bryant 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

Installation Disclaimer:

This furnace thermostat is intended for use by licensed HVAC technicians or individuals with proper heating system repair experience. Buyer is responsible for verifying compatibility and ensuring safe installation. Improper handling may result in equipment damage, fire hazard, or personal injury. Seller assumes no liability for misuse or incorrect application.

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