John Carpenter wrote:

>Hi All,
>Do we have any professional auto air conditioning
>experts on the list?
>What equipment is necessary to do one's own air  servicing?
>Brands, models, prices?
>I assume it's not cheap, but in the long run, worth  it?
>thanks,
>John
>
>
>
The two main things I use are:
  a gauge set ( ~ $75 )
  a decent vacuum pump ( ~$100 used, ~$500 new)

Of course if you want to reclaim, analyze, and recycle R-12, etc.,
that'$ another ball game.

Larry A.
amateur