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HVAC Technician I - Third Shift
Posted Sep 1, 2026 · We last checked this listing on Oct 6, 2026
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Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
This is a third shift job. What experience do you have working overnight, and how do you stay alert?
What they are checking: Whether they can work nights reliably and safely.
Tell me about a time you learned a new system or skill on the job.
What they are checking: Whether they are willing to keep learning in an entry-level technician role.
What would you do
You need to take smoke heads or an FM200 system out of service for a contractor. What steps do you follow?
What they are checking: Whether they respect fire safety procedures and coordinate before disabling life-safety systems.
During an overnight inspection you find a problem you can't fix on your own. What do you do?
What they are checking: Whether they know when to escalate and report clearly instead of leaving it for morning.
About the work
Walk me through how you would troubleshoot an air handler that isn't keeping a lab at the right temperature.
What they are checking: Whether they can troubleshoot step by step instead of guessing at parts.
What experience do you have replacing fan and pump motors, seals, bearings or pneumatic controllers?
What they are checking: Whether they have real hands-on mechanical skills for the repairs named in the posting.
Have you used building automation systems or Phoenix Controls for lab airflow? What did you do with them?
What they are checking: Whether they can work with the control systems that keep research buildings safe.
Why does airflow in research labs and fume hoods matter so much?
What they are checking: Whether they understand that lab ventilation protects people from hazardous chemicals.
What brazing or piping work have you done, such as gas, air or vacuum lines?
What they are checking: Whether they have the skills for the small projects the role includes.
How do you keep yourself safe with lockout/tagout and work around energized equipment?
What they are checking: Whether they follow safety procedures every time, especially working alone at night.
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As published by Medical College of Wisconsin.
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