reducing nuisance pilot dropouts

Rugged construction maintains contact integrity in high-vibration HVACR operating environments

Does this tool assist with branch line pressure adjustments

90" WC of vacuum

Proven Reliability: Engineered specifically for gas furnace pilot components

Lennox 51W91 Pressure Switch reducing nuisance pilot dropoutsThe Lennox 51W91 Pressure Switch is a critical safety component engineered for precision in Lennox gas furnace repair and maintenance. As an authentic OEM HVAC replacement part, this SPST pressure switch is calibrated to a specific set point of 0. 95" WC (water column), ensuring the inducer motor is drafting correctly before allowing the ignition sequence to proceed. Professionals recognize the Lennox 51W91 as the 56M05 direct replacement, maintaining