Quote:
Originally Posted by alanaslan
As the original gas has a different mass to that of the new gas.
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Hi Alan,
I'm assuming that by "original" you mean R134a and by "new" you mean R1234yf.
I've done a quick search and it's said that R1234yf is a "drop in" replacement for R134a, meaning that no changes are necessary. It may be that a minor adjustment is made to the charge but I believe that it will still be determined by weight. As
SWorks says, the automatic machines contain a bottle of refrigerant sitting on a set of scales which isn't visible to the observer.
Simon