Lennox 26W42 Pressure Switch 321042-401 the blades are convex-set to

the blades are convex-set to handle the CFM requirements of specific York

Ensure your system's pressure and temperature requirements align with the valve's 1015 psi max rating

specifically designed to capture wax

Direct OEM Replacement: Verified 1:1 match for 621720R and 621300

Lennox 26W42 Pressure Switch 321042-401 the blades are convex-set toThe Lennox 26W42 Pressure Switch is a critical OEM component designed for high efficiency two stage furnace operation. Engineered to monitor and regulate inducer motor performance, this switch features precise dual factory set points of 0. 55" W. C. (Low) and 0. 95" W. C. (High). As a veteran grade HVAC replacement part, it ensures the sequence of operation is maintained by verifying proper vacuum pressure before allowing the ignition process to