Integrated compressor short cycle protection extends compressor lifespan

The Robertshaw 1980-018 features a snap-fit tip that slides into place

Helps maintain proper heat rejection and overall HVAC system efficiency

Designed for reliability at altitudes between 0 and 1

It requires the airflow from the fan blade it is driving to maintain proper operating temperatures and prevent thermal tripping

Lennox 17U20 Pressure Switch 321894-709 Integrated compressor short cycle protectionThe Lennox 17U20 Pressure Switch is a high precision sensing component engineered for critical monitoring in residential and commercial HVACR systems. This OEM Lennox 104371 10 replacement part is designed to actuate at 1. 00 inch W. C., providing essential safety interlocking for furnace draft inducer motors and air handling units. Built with a sensitive diaphragm and a robust SPST N. O. contact configuration, it ensures the electrical circuit closes