I'm in the technical side of the computer industry, and need a new career since most computer jobs have gone overseas. Here in Oregon I don't find any HVAC training except in Portland, and when I'm laid off I'll need to do something quick. Can anyone tell me how long HVAC certification takes, and what I'd need at the minimum to get my foot in the door? Do employers in the field have any reservations about "older" workers (50)...with the "old school" dedication ethics? Thanks.