. Not sure how to mark this question solved but I now know what I need to do. Great answers ... Robert Often you can go into your original post, choose edit, and edit the topic title. If that is no longer possible yourself, a site admin should have the ability to make that change. Idk how that is h...

I think what you're referring to is recovery instead of evacuation . In theory, you could recover the refrigerant by using a vacuum pump and storage tank. But remember that a modern RRR machine also recycles the refrigerant by identifying, filtering, and removing moisture from the recovered refrige...

If you're referring to professional RRR machines, they usually are designed for specific refrigerants and oil types—for example, R-12/Mineral Oil (virtually obsolete nowadays); R-134a/PAG Oil; and R-1234yf/Special PAG Oil. Lately, I've heard that RRR machines are now being produced that can handle ...

Hi I am wondering if it is possible to clean an Evacuation System thoroughly from one type of Refrigerant so it could be used to Evacuate another type? If it is, how would one go about properly cleaning any system before changing to another refrigerant. I am talking about a DIYer. I understand why b...