Interview scorecard template

HVAC Service Technician interview scorecard

Evaluate HVAC Service Technician candidates across 4 weighted areas: hands-on competence, safety discipline, fault finding, and reliability and conduct. Hands-on competence leads at 35%, so check hands-on range across split systems, rooftop packaged units, heat pumps and mini-splits: brazing, superheat and subcooling checks, EPA 608 Universal card, recovery and charging by weight. Use the rubric to compare role-specific evidence consistently.

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skilled trades technical operationsepa 608hvacrefrigerationrooftop units
TL;DR
For hands-on competence, look for evidence the candidate names equipment brands serviced, quotes target superheat ranges, holds EPA 608 Universal, and describes brazing and evacuation to micron levels. For safety discipline, look for evidence the candidate describes tagging a disconnect before opening a panel, testing for CO and gas leaks, and refusing unsafe roof access without hesitation. Apply the written 1–5 anchors to every answer, record the evidence behind each rating, and use the factor weights to reach a consistent overall assessment.
Complete evaluation framework

What to assess and how to score it

Review the evidence signals before interviewing. Then use the anchored descriptions—not instinct alone—to choose the score that best matches each answer.

01
Evaluation factor

Hands-on competence

35% weight

Check hands-on range across split systems, rooftop packaged units, heat pumps and mini-splits: brazing, superheat and subcooling checks, EPA 608 Universal card, recovery and charging by weight.

Evidence to listen for

  • Names the equipment, materials, and tolerances they work to
  • Can describe a job start to finish without hand-waving the hard parts
  • Holds the tickets, licences, or certifications the work requires, and they are current
  • Knows what they are not qualified to touch

Five-point scoring guide

1
Poor

Cannot describe the work concretely; lacks required tickets or licences.

2
Needs Improvement

Basic familiarity; needs supervision on routine tasks.

3
Satisfactory

Competent on standard work; slower or unsure on unfamiliar jobs.

4
Very Good

Skilled and independent across the normal range of the role.

5
Excellent

Names equipment brands serviced, quotes target superheat ranges, holds EPA 608 Universal, and describes brazing and evacuation to micron levels.

02
Evaluation factor

Safety discipline

30% weight

Probe lockout/tagout on 480V rooftop gear, refrigerant handling under Section 608, combustion safety checks on gas furnaces, ladder and roof access rules, and PPE habits.

Evidence to listen for

  • Treats procedure as protection rather than paperwork
  • Can describe a time they stopped work and why
  • Knows the specific hazards of this trade and the controls for each
  • Reports near misses instead of hiding them

Five-point scoring guide

1
Poor

Casual about safety; describes shortcuts with pride.

2
Needs Improvement

Follows procedure when watched; cannot name the hazards that matter.

3
Satisfactory

Sound safety habits; less certain on unfamiliar hazards.

4
Very Good

Safety is instinctive; can describe stopping work over a real concern.

5
Excellent

Describes tagging a disconnect before opening a panel, testing for CO and gas leaks, and refusing unsafe roof access without hesitation.

03
Evaluation factor

Fault finding

20% weight

Test diagnostic reasoning on no-cool calls: reading manifold gauges, megohm testing compressors, tracing 24V control circuits, board fault codes, and distinguishing TXV from restriction issues.

Evidence to listen for

  • Has a method for narrowing a fault rather than swapping parts
  • Reads schematics, manuals, or error codes and acts on them
  • Knows when to escalate rather than guess
  • Can describe a fault that took real work to find

Five-point scoring guide

1
Poor

Parts-swapper; no diagnostic method.

2
Needs Improvement

Fixes symptoms; cannot explain how they found the cause.

3
Satisfactory

Solid on familiar faults; less structured on new ones.

4
Very Good

Clear systematic method with a real hard-fault story.

5
Excellent

Walks a full fault tree with pressures, temperature split and amp draw readings, and explains a misdiagnosis they later corrected.

04
Evaluation factor

Reliability and conduct

15% weight

Assess service call conduct: on-call rotation, work orders in ServiceTitan or similar, callback rate, customer explanations of repair versus replace, and truck stock discipline.

Evidence to listen for

  • Turns up, on time, prepared
  • Handles shift work, callouts, or travel as the role requires
  • Documents work so the next person can pick it up
  • Deals with customers or site staff professionally

Five-point scoring guide

1
Poor

Unreliable attendance; unprofessional on site.

2
Needs Improvement

Inconsistent; documentation is an afterthought.

3
Satisfactory

Dependable; paperwork is adequate.

4
Very Good

Consistently reliable, documents well, professional with customers.

5
Excellent

Cites low callback numbers, documents findings clearly in the dispatch system, and handles upset customers without overselling equipment.

Evidence-led prompts

Interview questions for a HVAC Service Technician

Use these prompts to surface evidence for the weighted factors above and compare candidates against the same role-specific criteria.

  1. 01

    Give specific examples of your experience working with gas equipment.

  2. 02

    Give specific examples of your experience working with steam equipment.

  3. 03

    Give specific examples of your experience with electrical equipment and diagnostics.

  4. 04

    Give specific examples of your refrigeration experience.

  5. 05

    What are the main components of a refrigeration system?

See the complete HVAC Service Technician question set
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