Charging Freon: Checking the Freon R22 Refrigerant Charge Step By Step and How to tell if its Low!

Charging Freon: Checking the Freon R22 Refrigerant Charge Step By Step and How to tell if it's Low! This is How to Check a Refrigerant Charge on an Outside Air Conditioning Unit. I show you what you need to look for so that you know what Charging Process to Check the Refrigerant Charge with to see if the charge is low. This is done in a Step by Step Process and we explain what is really happening in the Refrigerant Cycle when you are measuring Temperature and Pressure at the service port.