reliable manifold maintenance in commercial and industrial plumbing or HVAC applications

The 27W12 is typically calibrated for R-22 systems with lower trip points

Swapping the 415-43676-03 with a different temperature rating will compromise the safety logic of the gas control valve and may lead to premature shutdowns or hazardous operating conditions

this condenser fan grille is built to withstand the rigorous demands of commercial and industrial environments

Designed to meet strict HVAC ignition system standards

Lennox 64W86 Pressure Switch 322056-301 reliable manifold maintenance in commercialThe Lennox 64W86 Pressure Switch is a critical safety component engineered specifically for two stage gas furnaces. This factory authorized replacement operates as an air pressure sensor, monitoring differential pressure to ensure proper inducer motor performance and venting before allowing the ignition sequence. Designed for high efficiency systems, it features a dual level calibration with a set point high of 1. 20" W. C. and a set point low of 0.