Years ago, the common thing was hook up your AC machine, or hook up your apparatus that you have–a scale and a refrigerant canister, let’s say a 30 pounder of 134a–and give it a half a pound, just to ‘top it off.’ You can’t do that nowadays because these newer AC systems have changed so much. Join Delphi Instructor Dave Hobbs for a short tech tip for you guys out there servicing A/C systems.
