OEM Lennox Contactor — 88P55

The genuine OEM Lennox 88P55 contactor is the electrically operated switch that delivers high-voltage power to the compressor and condenser fan motor in your Lennox outdoor unit. When the thermostat calls for cooling, the control circuit energizes the contactor coil, closing the contacts to start the system — making it one of the most frequently cycled and hardest-working components in your air conditioner.

Because it switches heavy loads thousands of times per season, the contactor is a common failure point. Warning signs include a system that won't turn on, a humming or chattering sound from the outdoor unit, pitted or burned contacts, a compressor that won't start, or a unit that runs continuously and won't shut off. Insects and debris can also lodge in the contacts and prevent proper operation.

The OEM 88P55 is matched to the exact coil voltage, contact rating, and pole configuration your Lennox equipment requires. A properly rated factory contactor ensures safe, reliable switching and helps protect your expensive compressor from voltage and arcing problems that can arise with mismatched aftermarket parts.