Amana-Goodman B1370187 Limit Switch

The Amana-Goodman B1370187 Limit Switch is a critical OEM safety component engineered for high-static furnace environments. As a primary auto limit switch, it monitors internal plenum temperatures to protect the heat exchanger from hazardous overheating. This specific model is calibrated with a 160 degree F cutout and a 130 degree F cut-in reset point, ensuring the system interrupts the heating cycle if airflow becomes restricted due to a clogged filter or failing blower motor. Featuring a 3-inch probe length and a heavy-duty pressed steel enclosure, this switch provides precise thermal sensing and long-term durability against constant expansion cycles. It is a direct-fit replacement for numerous Goodman, Amana, and Janitrol gas furnaces, resolving common "Limit Switch Open" diagnostic fault codes and rapid system cycling. For technicians, this 130-160F auto limit switch ensures factory-spec performance and seamless integration with the integrated ignition control board without the calibration risks of universal parts.

• Genuine OEM Precision: Eliminates mounting and calibration issues common with generic "truck stock" alternatives.
• System Protection: Prevents heat exchanger stress fractures by maintaining strict 130-160F thermal boundaries.
• Simple Installation: Designed with standard spade terminals and a 3-inch probe for immediate swap-in compatibility.
• Diagnostic Resolution: Directly addresses furnace short-cycling and relay clicking issues caused by worn thermal sensors.

• What causes a B1370187 limit switch to trip frequently? Usually, restricted airflow from a dirty air filter, blocked return air vents, or a failing blower motor causes the plenum temperature to hit the 160°F limit.
• Is this switch compatible with 24V or 120V systems? Yes, the B1370187 is rated for both 24V and 120V circuits, commonly handling up to 13.3 Amps at 120VAC.
• Which furnace models use the Amana-Goodman B1370187? It is widely used in Goodman GMT, GMS, and GSC130 series furnaces. Always verify the part number on the existing switch before replacement.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

This item is not eligible for free shipping.