Whether you are performing routine HVAC preventive maintenance or a critical emergency HVAC repair

ensuring all electrical connections and mounting points align perfectly

Always verify voltage with a multimeter before energizing the secondary side

This kit is required when a furnace is installed at an altitude higher than its base factory rating

A rating that is too high can lead to excessive winding heat or damage to the centrifugal switch/relay

Heatcraft Refrigeration 2252440 Contactor 340155-7024 Whether you are performing routineThe Heatcraft 2252440 Compressor Contactor is a heavy duty electrical switching component engineered for demanding commercial refrigeration and HVAC applications. Designed for high amperage loads, this 40 AMP 2 poles contactor features a 24V coil voltage, making it a standard replacement for many Heatcraft, Bohn, and Lark units. For technicians servicing walk in coolers, freezers, or rooftop units, this contactor provides reliable cycling of the