First interview in over the phone and it's basically a screening. Second interview was a casual interaction, questions as you would expect. Experience, a few what would you do if (some examples are if a water heater in a unit went out what would be your first steps of diagnosis. If an A/C unit started blowing hot air what would you assume the issue to be at first) The third interview included a written test to assess knowledge of technical terms. I can fix about anything, however the exact terminology for thingamabob and doohickey is something I often have to lookup.