There is no technical difference in fitment or function

the Aaon P81570 Limit Switch is a critical component for maintaining secondary safety and equipment integrity

which would render the capillary gas control inoperable

Reliable Integration: Integrated end switches allow for 100% confirmation of damper position to the zoning system

Automatic Reset Logic: Eliminates the need for manual intervention after the heat exchanger reaches a safe operating temperature

Lennox 60M27 Ignition Module Refrigerant There is no technical differenceThe Lennox 60M27 Ignition Module is a critical OEM furnace control board engineered for high reliability sequence management in gas fired heating systems. This hot surface ignition (HSI) controller, also identified under the part number 60M2701 and the 1018 series, is designed to handle 120 240V output requirements common in residential and light commercial HVAC replacement parts. As a veteran grade ignition control module, it manages the inducer