Today we learn how to evacuate and pull a vacuum on automotive air conditioning (A/C) systems using R134a or R12 refrigerants. Discover why pulling a vacuum on an A/C system is crucial, how A/C systems work, and the components involved such as the A/C compressor, condenser, Receiver Drier, expansion valve, orifice tube, and evaporator. Also we install a trinary switch.

Vacuum pump and Gauges:
https://www.amazon.com/gp/product/B07...

Thermostat:
https://www.amazon.com/gp/product/B00...

R134a Freon:
https://www.walmart.com/ip/SuperTech-...