Lennox 81W03 Control Board Els PW 17895 Designed to integrate seamlessly with

Designed to integrate seamlessly with PI (Intermittent Ignition) systems

The Carrier P291-3554RS Run Capacitor is a 35+5 MFD 440V dual run capacitor designed for high-duty cycle performance in residential and commercial HVAC systems

this indicates a restricted vent pipe

this mechanical thermostat allows for versatile control of heating

Key Benefits: Independent Adjustment: Two separate sensing elements allow for fine-tuned control of high and low actuation points within a single HVAC pressure switch assembly

Lennox 81W03 Control Board Els PW 17895 Designed to integrate seamlessly withThe Lennox 81W03 Control Board is the direct OEM replacement for the Lennox 17W70, 17W7001, and 81W0301 ignition control boards. As the central logic for your furnace, this integrated furnace control manages critical sequences, including hot surface ignition, flame sensing, and blower motor timing. It is engineered specifically for use in high efficiency units such as the Lennox G40, G43, and ML180 ML193 series. When performing a field replacement,