Lennox 10W99 Piston Kit 320788-703 the York S1-026-42532-000 provides a

the York S1-026-42532-000 provides a critical solution for restoring static pressure in residential and light commercial air handlers

The layout includes dedicated diagnostic LED indicators for real-time status monitoring and circulator terminal contacts to support the integration of auxiliary safety devices

Persistent codes often indicate a recurring sensor or communication bus fault that requires technical inspection

Compatibility is strictly based on the valve's model number

Designed to facilitate efficient heat exchange by moving air over the evaporator or heating coils

Lennox 10W99 Piston Kit 320788-703 the York S1-026-42532-000 provides aFor field technicians and contractors maintaining Lennox equipment, the Lennox 10W99 Piston Kit is a critical OEM refrigerant metering device designed for precise flow regulation. Featuring a . 065 orifice size, this factory authorized assembly ensures your split system air conditioner or heat pump operates at peak efficiency by providing accurate thermal expansion control. Unlike generic alternatives, the 10W99 piston orifice (also identified as