Lennox 11U66 Pressure Switch 320788-702 Key Benefits: System Protection: Effectively

Key Benefits: System Protection: Effectively prevents compressor damage caused by low refrigerant charge or liquid line restrictions

calibrated gate that reacts to minute changes in pressure

which is critical for extending the life of your motor bearings

utilizing this CSA certified and ASME rated relief valve ensures system integrity and maintains HVACR equipment safety standards during routine maintenance or emergency repairs

ensuring all mounting points and wiring headers align perfectly

Lennox 11U66 Pressure Switch 320788-702 Key Benefits: System Protection: EffectivelyThe Lennox 11U66 Pressure Switch is a critical safety component designed for precise draft monitoring in high efficiency gas furnaces and HVAC systems. As a genuine OEM replacement, this 0. 55" WC pressure switch is factory calibrated to actuate at 0. 55 inches of water column, ensuring the inducer motor is creating sufficient static pressure before the ignition sequence begins. Built by Cleveland Controls (MPN: 11U66 or 104371 03), this single pole