or a "clicking" sound from the compressor

How do I verify if this fits my York unit

this kit provides a high-sensitivity readout down to 1 ppm

With a fixed open temperature of 175°F and a fixed close temperature of 145°F

This Hi-Limit Block Vent Switch features an L150F temperature rating

Emerson Alco 065407 Moisture Indicator or a "clicking" sound fromThe Emerson Alco 065407 (Model HMI 1TT4) is a high performance 1 2" ODF sweat moisture indicator designed for rigorous monitoring of refrigerant liquid lines. Engineered with a 680 PSI maximum working pressure, this hermetic sight glass provides reliable leak free performance and clear visibility for CFC, HCFC, and HFC refrigerants. The crystal clear viewing lens features a highly sensitive moisture indicator element that changes color based on the