ICC 78 – COMMERCIAL ENERGY PLANS EXAMINER PRACTICE TEST QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
Core Domains
- Energy code fundamentals
*- Building envelope and thermal performance*
*- Mechanical systems and HVAC efficiency*
*- Lighting, power, and controls*
*- Compliance documentation and plan review*
*- Calculations and load/UA analysis*
*- Regulatory and legal compliance*
*- Professional ethics and plan examiner duties*
Introduction
This practice exam simulates the Commercial Energy Plans Examiner assessment to evaluate candidate
readiness for commercial energy plan review. It assesses understanding of energy conservation codes, plan-
reading skills, calculation methods, compliance strategies, and decision-making when reviewing commercial
construction documents. The format uses multiple-choice questions and scenario-based items designed to
mirror real plan-review situations, requiring both recall of code provisions and applied judgment. Focus is
placed on practical application, regulatory interpretation, and ethical responsibilities expected of a
professional plans examiner.
Section One: Questions 1–100
,. When reviewing a commercial building envelope on plans, which metric most directly indicates the thermal
performance of an assembly?
A. R-value
B. U-factor
C. Solar heat gain coefficient
D. Air change rate
🟢B
🔴 RATIONALE: U-factor measures heat transfer through an assembly and is the direct metric for thermal
performance in code compliance.
. Which code document primarily governs commercial energy conservation compliance for building envelopes
and systems?
A. International Building Code (IBC)
B. International Fire Code (IFC)
C. International Energy Conservation Code (IECC)
D. ASHRAE 62.1
🟢C
🔴 RATIONALE: The IECC sets energy conservation requirements for building envelopes and systems used in
commercial code compliance.
,. A set of commercial plans shows glazing with a SHGC of 0.60 on south-facing facades in a hot climate. What is
the primary concern for plan review?
A. Structural support for glazing
B. Excessive solar heat gain increasing cooling load
C. Fire rating of glazing
D. Sound transmission class
🟢B
🔴 RATIONALE: High SHGC increases solar heat gain, which is critical in hot climates because it raises
cooling loads and affects energy compliance.
. During plan review, which document should be required to verify mechanical system efficiency ratings?
A. Manufacturer cut-sheet with certified efficiency rating
B. Sales invoice
C. Installer resume
D. General notes on plans
🟢A
🔴 RATIONALE: Manufacturer cut-sheets provide certified efficiency ratings needed to verify compliance with
energy code efficiency requirements.
. For a building required to meet prescriptive envelope U-factors, which approach would allow alternative trade-
offs to still demonstrate compliance?
A. Prescriptive only—no alternatives allowed
B. Performance-based compliance demonstrating equivalent energy use
C. Substituting insulation types without recalculation
D. Ignoring windows in calculations
🟢B
🔴 RATIONALE: Performance-based compliance allows demonstrating equivalent or better energy
performance through trade-offs and calculations.
, . A mechanical plan shows constant-volume HVAC units with no controls. Which deficiency most affects energy
code compliance?
A. Noise levels
B. Lack of energy controls (e.g., scheduling, economizers)
C. Color of equipment
D. Distance to mechanical room
🟢B
🔴 RATIONALE: Energy codes require controls (like scheduling and economizers) to reduce energy use; lack
of controls is a compliance deficiency.
. Which calculation method estimates heat loss/gain through opaque walls for compliance?
A. U-factor times area (UA) method
B. EER calculation
C. Lumen method
D. NFPA 70 calculation
🟢A
🔴 RATIONALE: The UA method (U-factor multiplied by area) is used to compute heat transfer through
opaque assemblies for energy assessments.
. When a project uses on-site renewable energy to reduce building energy use, how is that typically considered in
code compliance?
A. Not allowed
B. May be used in performance paths to offset energy use
C. Automatically grants exemptions
D. Replaces insulation requirements
🟢B
🔴 RATIONALE: On-site renewables can be used in performance-based compliance to offset energy
consumption, if the code and compliance method permit.
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
Core Domains
- Energy code fundamentals
*- Building envelope and thermal performance*
*- Mechanical systems and HVAC efficiency*
*- Lighting, power, and controls*
*- Compliance documentation and plan review*
*- Calculations and load/UA analysis*
*- Regulatory and legal compliance*
*- Professional ethics and plan examiner duties*
Introduction
This practice exam simulates the Commercial Energy Plans Examiner assessment to evaluate candidate
readiness for commercial energy plan review. It assesses understanding of energy conservation codes, plan-
reading skills, calculation methods, compliance strategies, and decision-making when reviewing commercial
construction documents. The format uses multiple-choice questions and scenario-based items designed to
mirror real plan-review situations, requiring both recall of code provisions and applied judgment. Focus is
placed on practical application, regulatory interpretation, and ethical responsibilities expected of a
professional plans examiner.
Section One: Questions 1–100
,. When reviewing a commercial building envelope on plans, which metric most directly indicates the thermal
performance of an assembly?
A. R-value
B. U-factor
C. Solar heat gain coefficient
D. Air change rate
🟢B
🔴 RATIONALE: U-factor measures heat transfer through an assembly and is the direct metric for thermal
performance in code compliance.
. Which code document primarily governs commercial energy conservation compliance for building envelopes
and systems?
A. International Building Code (IBC)
B. International Fire Code (IFC)
C. International Energy Conservation Code (IECC)
D. ASHRAE 62.1
🟢C
🔴 RATIONALE: The IECC sets energy conservation requirements for building envelopes and systems used in
commercial code compliance.
,. A set of commercial plans shows glazing with a SHGC of 0.60 on south-facing facades in a hot climate. What is
the primary concern for plan review?
A. Structural support for glazing
B. Excessive solar heat gain increasing cooling load
C. Fire rating of glazing
D. Sound transmission class
🟢B
🔴 RATIONALE: High SHGC increases solar heat gain, which is critical in hot climates because it raises
cooling loads and affects energy compliance.
. During plan review, which document should be required to verify mechanical system efficiency ratings?
A. Manufacturer cut-sheet with certified efficiency rating
B. Sales invoice
C. Installer resume
D. General notes on plans
🟢A
🔴 RATIONALE: Manufacturer cut-sheets provide certified efficiency ratings needed to verify compliance with
energy code efficiency requirements.
. For a building required to meet prescriptive envelope U-factors, which approach would allow alternative trade-
offs to still demonstrate compliance?
A. Prescriptive only—no alternatives allowed
B. Performance-based compliance demonstrating equivalent energy use
C. Substituting insulation types without recalculation
D. Ignoring windows in calculations
🟢B
🔴 RATIONALE: Performance-based compliance allows demonstrating equivalent or better energy
performance through trade-offs and calculations.
, . A mechanical plan shows constant-volume HVAC units with no controls. Which deficiency most affects energy
code compliance?
A. Noise levels
B. Lack of energy controls (e.g., scheduling, economizers)
C. Color of equipment
D. Distance to mechanical room
🟢B
🔴 RATIONALE: Energy codes require controls (like scheduling and economizers) to reduce energy use; lack
of controls is a compliance deficiency.
. Which calculation method estimates heat loss/gain through opaque walls for compliance?
A. U-factor times area (UA) method
B. EER calculation
C. Lumen method
D. NFPA 70 calculation
🟢A
🔴 RATIONALE: The UA method (U-factor multiplied by area) is used to compute heat transfer through
opaque assemblies for energy assessments.
. When a project uses on-site renewable energy to reduce building energy use, how is that typically considered in
code compliance?
A. Not allowed
B. May be used in performance paths to offset energy use
C. Automatically grants exemptions
D. Replaces insulation requirements
🟢B
🔴 RATIONALE: On-site renewables can be used in performance-based compliance to offset energy
consumption, if the code and compliance method permit.
