Did my ticket a year ago, currently a spark, but want to offer domestic and office air con solutions.

I have been very busy sparking, but now I have a system to top up with R-22. I was thinking should I weigh it all out, pressure test with ofn then triple vac, or just whack some more in and hope for the bast, to put it in perspective this is used as a heat pump in the winter, so I will be changing the whole lot out in may.

If I wieigh it out can I just store it in the recovery machine, or will I need to go buy a recovery cylinder, boy this top up is getting expensive!?

Opinions please boys and girls

Martin