Lennox 27H87 Limit Switch The White-Rodgers 90-172 Contactor is

The White-Rodgers 90-172 Contactor is a heavy-duty 3-pole definite purpose contactor engineered for demanding central air conditioning and heating applications

it maintains structural integrity under constant thermal cycling

When you're dealing with a failing Honeywell MP953 pneumatic valve actuator

Industrial Build Quality: Constructed from corrosion-resistant materials to withstand environmental exposure in outdoor condenser units

Always verify the part number against your model’s parts list to ensure the logic and set point match the OEM requirements

Lennox 27H87 Limit Switch The White-Rodgers 90-172 Contactor isThe Lennox 27H87 Limit Switch is a critical OEM safety component engineered for precise thermal management in high performance heating systems. This 120 160F auto limit switch is specifically designed to monitor furnace plenum temperatures, providing a fail safe against overheating by interrupting the burner circuit if thresholds exceed the factory calibrated 160F limit. As a veteran grade HVAC replacement part, the 27H87 ensures seamless integration