Just in case anyone's interested, the City of Phoenix has opened up two of their HVAC tech lists. Don't apply if you need a job right now, because the procedure is to apply to get "on the hiring list."
You submit the application, and if everything meets the requirements, they notify you that you're on the list. When there's an opening (and there are four in my shop right now) they can contact you for an interview.
It was four months from the time I applied for the job before they called me for an interview. The wait time can be anywhere from a few weeks to up to two years, which is generally how long the "lists" are kept.
Here's the link: