Lennox 80M29 Ignitor Els PW 17895 the contacts are designed to

the contacts are designed to close as the negative pressure (vacuum) reaches the specific setpoint

System Efficiency: Prevents internal leaks that cause strain on the compressor and increased energy consumption

This high-limit thermostat is a direct replacement part

" or visible cracks in the housing that lead to pneumatic pressure loss

and Day & Night equipment

Lennox 80M29 Ignitor Els PW 17895 the contacts are designed toThe Lennox 80M29 Ignitor is a heavy duty hot surface ignitor engineered for precise ignition in Lennox gas furnaces, as well as select Armstrong and Ducane heating systems. Functionally identical to the 80M2901 and often used as a direct OEM furnace replacement part for the 20434202 and 28M96, this component features a silicon nitride element known for superior thermal shock resistance compared to older silicon carbide versions. This 120V ignition