Lennox 20J97 Pressure Switch 320735-701 this unit is designed for

this unit is designed for indoor industrial and commercial spaces such as warehouses

if the coil is magnetized but the valve won't shift

this heavy-duty Series 53 replacement part (Part Number 137000) provides proportional feed action to maintain safe water levels in systems larger than 5

as it includes the mounting bracket and linkage required for immediate installation

making it ideal for high-static residential or light commercial ductwork

Lennox 20J97 Pressure Switch 320735-701 this unit is designed forThe Lennox 20J97 Pressure Switch is a mission critical safety component engineered for high efficiency HVAC units requiring precise draft proving. This OEM Lennox replacement part features a 1. 15" WC set point and a Single Pole Single Throw (SPST) configuration, ensuring the combustion air inducer is generating the necessary static pressure before allowing the ignition sequence to proceed. Designed with a standard 1 4" barb connection, it integrates