You can check with one of the HVAC contractors/equipment suppliers in your area, to see who they recommend - might even be someone local that does it - some of the larger companies actually conduct cert courses as a sideline.

Got mine courtesy of the Navy back in 93, we had to have it just to operate the A/C units on board ship, when they first came out with the regs on freon - so I can't speak as to what they teach now.

But what I can tell you is that it DOES make a difference to a prospective employer if you already have the cert in hand, versus them having to spend the time and money to get you certified after the fact, given experience, training, and all other things being equal.

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Just say "NO" to Ethanol - Drive Diesel

Mitchell Oates
Mooresville, NC
'87 300D 212K miles
'87 300D 151K miles - R.I.P. 12/08
'05 Jeep Liberty CRD 67K miles
Grumpy Old Diesel Owners Club