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Why are there two columns on a PT chart, and how are they used?
What do "bubble point" and "dew point" mean?
Why do bubbles appear in the sight glass when I use a blend? Does this mean I don't have enough refr
If a blend leaks out of the system, will I need to pull the remaining charge and recharge, or can I
If I am putting in the whole refrigerant bottle, can I feed vapor then?
What is the proper charging method for refrigerant blends? If I charge by liquid, won't I slug my co
Do I need to change the oil in my system when I retrofit to a blend?