Journeyman
Posted Jul 22, 2026 · We last checked this listing on Oct 6, 2026
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
Tell me about a repair where you found the first part you replaced was not the real cause. What did you learn?
What they are checking: Honesty and a habit of confirming the root cause before replacing parts.
How do you explain a costly repair to a building owner who is not technical?
What they are checking: Whether they communicate clearly and honestly so the customer trusts the recommendation.
What would you do
You are at a customer's building and they ask for work not on the ticket. What do you do?
What they are checking: Whether they serve the customer while keeping the scope and billing clear with the office.
You are covering Elmhurst, Moline or Peoria territory alone. How do you manage your day when two urgent calls come in?
What they are checking: Judgment and communication when working independently across a large area.
About the work
Walk me through how you diagnose a rooftop unit that is running but not cooling.
What they are checking: Their independent diagnostic process, which the posting calls intermediate to advanced.
How do you prepare and braze a copper line set so the joint does not leak?
What they are checking: Hands-on brazing skill, including nitrogen purging to prevent internal scale.
A chiller trips on high head pressure. What are the most likely causes, and how do you narrow them down?
What they are checking: Understanding of refrigeration cycle problems on commercial equipment.
How do you trace a wiring fault in a control circuit when the schematic is missing or wrong?
What they are checking: Electrical troubleshooting skill that does not rely on perfect documentation.
How do you handle refrigerant recovery and recordkeeping on a commercial job?
What they are checking: Knowledge of EPA 608 rules and responsible handling of refrigerants.
What pipefitting work have you done on hydronic systems, and what do you check before you fill a system?
What they are checking: Pipefitting experience mentioned in the posting and care around pressure testing.
How do you keep yourself safe when working on energized equipment or on a roof?
What they are checking: Commitment to lockout/tagout, fall protection and other safe work practices.
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Practice this out loudThe full job description
As published by Daikin Applied.