2024 Commercial Energy Inspector – Practice Quiz (Untimed)

2024 Commercial Energy Inspector (Untimed)

50 Questions

2 Hours

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1. A ventilation system operates 5,000 hours per year (Less than 8,000) in Climate Zone 5A. If the outdoor air percentage is 55%, what is the minimum required design supply fan airflow rate (cfm)?

A) greater or equal to 4,500 cfm

B) greater or equal to 5,500 cfm

C) greater or equal to 3,500 cfm

D) greater or equal to 2,000 cfm

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2. New heating and cooling equipment that is part of an alteration shall be sized in accordance with Section C403.3.1 based on the existing building features as modified by the alteration. Which circumstance is NOT an exception to this requirement?

A) The code official demonstrates the additional capacity will be needed in the future.

B) The equipment being replaced is packaged terminal air conditioners (PTACs).

C) The additional capacity is needed for future expansion.

D) Compliance would result in equipment incompatible with the existing system.

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3. Which of the following components associated with piping 1 inch (25 mm) or less in diameter are explicitly excepted from thermal insulation requirements?

A) Pipe hangers and supports

B) Expansion joints

C) Strainers, control valves, and balancing valves

D) Union fittings

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4. A fault detection and diagnostics (FDD) system is required for buildings with a gross conditioned floor area of not less than 100,000 square feet, served by one or more HVAC systems controlled by what type of system?

A) Load shedding system

B) Programmable zone control system

C) Direct digital control (DDC) system

D) Building energy management system

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5. Which specific efficiency item is verified during the Mechanical System Inspection (C107.2.4)?

A) Electrical capacity and distribution

B) High-efficacy lamps

C) Minimum fan efficiency

D) Window U-factors

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6. DCKV systems must be configured to provide a minimum airflow reduction of what percentage in exhaust and replacement air system airflow rates?

A) 40 percent

B) 60 percent

C) 50 percent

D) 30 percent

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7. Newly installed boiler systems with a combustion air fan motor nameplate horsepower rating of 10 horsepower or more shall comply with one of two options: variable speed motor or controls that modulate fan airflow as a function of the load to a speed not greater than what percentage of design air volume?

A) 60 percent

B) 75 percent

C) 30 percent

D) 50 percent

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8. A commercial building is defined as all buildings that are not included in the definition of what other building type?

A) Data center

B) Residential building

C) Historic building

D) Occupied space

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9. If 70 percent or more of the precipitation occurs during the high sun period, the location is Dry (B) if the Annual Precipitation (P) is less than the value determined by which equation?

A) Equation 3-4

B) Equation 3-3

C) Equation 3-2

D) Equation 3-1

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10. What is the maximum water consumption (LPR) allowed for a Multiple-tank conveyor dishwasher under low-temperature efficiency requirements?

A) less than or equal to 3.4 LPR

B) less than or equal to 4.5 LPR

C) less than or equal to 3.0 LPR

D) less than or equal to 2.0 LPR

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11. For Office (all others) occupancy in Climate Zone 5A, what is the Mechanical Performance Factor (MPF) required for the HVAC TSPR method?

A) 0.845

B) 0.7

C) 0.805

D) 0.78

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12. If 30 percent or less of the precipitation occurs during the high sun period, the location is Dry (B) if the Annual Precipitation (P) is less than the value determined by which equation?

A) Equation 3-2

B) Equation 3-4

C) Equation 3-3

D) Equation 3-1

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13. What material is a fenestration product, field-fabricated made of?

A) Aluminum extrusions

B) Standard dimensional lumber or other materials not previously formed for fenestration

C) Specific factory cut materials

D) Pre-fabricated panels

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14. Residential kitchen faucets may temporarily increase the flow above the maximum rate, but not above what limit at 60 psi?

A) 2.0 gallons per minute

B) 2.2 gallons per minute

C) 2.5 gallons per minute

D) 1.8 gallons per minute

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15. For the code official to approve an alternative material or design, the proposed work must be found to be not less than the equivalent of the prescribed code requirements for which mandatory criterion?

A) Life cycle cost

B) Aesthetics

C) Economic feasibility

D) Energy conservation

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16. The Solar Reflectance Index (SRI) shall be determined in accordance with ASTM E1980 using a convection coefficient of what value (in Btu/h x ft2 x °F)?

A) 1.5

B) 3

C) 2.1

D) 2.5

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17. If source energy is used as the metric of comparison for electricity in US locations, what resource shall be used to calculate the source energy conversion factors?

A) Local utility provider data

B) International Energy Agency reports

C) eGRID subregions

D) ASHRAE 90.1 Appendix C

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18. In Thermal Climate Zone 5, what is the maximum CDD10°C (in SI units) allowed for a location to be classified as Marine (5C)?

A) 2500

B) 1800

C) 3000

D) 1000

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19. What is nameplate horsepower?

A) The actual measured output power

B) The required input power

C) The nominal motor output power rating stamped on the motor nameplate

D) The maximum fan brake horsepower

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20. Which party is responsible for maintaining buildings and structures in a safe and sanitary condition, including devices and systems required by this code?

A) The primary building tenant

B) The owner or the owner's authorized agent

C) The code official

D) The registered design professional

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21. What type of motor is a NEMA DESIGN A MOTOR?

A) Induction motor with wound rotor

B) Direct current

C) Synchronous motor

D) Squirrel-cage motor

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22. In Climate Zone 2B, what is the minimum total chilled-water system capacity (excluding units with air economizers) for Air-Cooled Chilled-Water Systems that requires an economizer?

A) 940,000 Btu/h

B) 1,320,000 Btu/h

C) 1,250,000 Btu/h

D) 720,000 Btu/h

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23. The reduction in energy cost of the proposed design associated with on-site renewable energy shall be not more than what percentage of the total energy cost calculated under C407.2?

A) 10 percent

B) 3 percent

C) 5 percent

D) 15 percent

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24. Where nonconditioned space is changed to conditioned space, and the simulated building performance option (C407) is used for compliance, the proposed design annual energy cost shall not exceed what percentage of the annual energy cost otherwise permitted by C407.2?

A) 105 percent

B) 110 percent

C) 100 percent

D) 95 percent

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25. What is the maximum allowed carryover credit limit for S-1 and S-2 Occupancies in Climate Zone 8?

A) 23

B) 5

C) 40

D) 11

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26. What is the minimum IEER required for VRF air conditioners, air cooled, with size greater or equal to 240,000 Btu/h and electric resistance heating?

A) 14.9 IEER

B) 12.3 IEER

C) 13.9 IEER

D) 15.5 IEER

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27. What is the formula for maximum energy consumption (kWh/day) for a medium temperature Walk-in Passage door (PD, M)?

A) 0.05 times A_{nd} + 1.7

B) 0.14 times A_{nd} + 4.8

C) 0.12 times A_{nd} + 5.6

D) 0.04 times A_{nd} + 1.9

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28. What is the minimum net sensible COP required for a Water cooled with fluid economizer, Nonducted unit, capacity greater or equal to 29,000 Btu/h and less than 65,000 Btu/h?

A) 2.23

B) 2.33

C) 2.26

D) 2.2

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29. If the occupancy of a building is unknown for simulation documentation, the Standard Reference Design lighting power density shall be 1.0 watt per square foot based on the categorization of buildings as what occupancy type?

A) Retail building

B) Hotel building

C) Office building

D) Warehouse building

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30. The building thermal envelope shall be tested by an approved third party in accordance with ASTM E3158 or an equivalent approved method. A report must be submitted to the code official and owner that includes all of the following EXCEPT:

A) Tested surface area

B) Air leakage rates

C) Material U-factors

D) Floor area

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31. Who is permitted to approve specific computer software, worksheets, or compliance manuals that meet the intent of this code?

A) The building owner

B) The registered design professional

C) The code official

D) The chief appointing authority

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32. Alterations that are classified as “substantial improvements” must comply with measures from Sections C406.2 and C406.3 to earn the number of required credits specified in which table?

A) Table C406.1.1(1)

B) Table C503.3.6

C) Table C406.1.2

D) Table C407.4.1(1)

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33. What is the maximum idle energy rate (Btu/h) for a Standard open deep-fat gas fryer?

A) less than or equal to 9,000

B) less than or equal to 1,100

C) less than or equal to 800

D) less than or equal to 12,000

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34. Combustion air positive shutoff is required on newly installed boiler systems if the total input capacity is not less than 2,500,000 Btu/h and the boilers are designed to operate with what condition?

A) A modulating gas valve

B) A nonpositive vent static pressure

C) Condensing operation

D) A positive vent static pressure

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35. For heating load calculations, the interior design temperature shall be a maximum of what value?

A) 70°F (21°C)

B) 75°F (24°C)

C) 72°F (22°C)

D) 68°F (20°C)

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36. Compare the Main fan power [W/cfm] (proposed less than MERV 13) for Small Office (cold) versus Retail (cold) TSPR Reference Building Designs.

A) Small Office (0.850) is higher than Retail (0.835).

B) They are equal.

C) Retail (0.835) is higher than Small Office (0.850).

D) Small Office (0.916) is higher than Retail (0.899).

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37. Exhaust air and outdoor air connections to isolation areas are exempt from shut-off requirements where the fan system to which they connect is not greater than what CFM?

A) 5,000 cfm

B) 3,500 cfm

C) 4,000 cfm

D) 2,000 cfm

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38. A duct system includes ducts, duct fittings, plenums, fans, accessory air-handling equipment, appliances, and which other component?

A) Thermostats

B) Heat traps

C) Heat exchangers

D) Dampers

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39. What must the estimated value of work provided by the applicant include?

A) Materials only

B) Only the cost of the energy-related equipment

C) Labor costs only

D) The total value of the work, including materials and labor

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40. In the standard reference design fossil fuel boiler model, hot water supply temperature shall be modeled at what design temperature?

A) 160(F)

B) 190(F)

C) 170(F)

D) 180(F)

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41. What is the minimum Full Load (FL) COP (W/W) required for Absorption double effect, indirect fired chilling packages of all capacities?

A) greater or equal to 0.600

B) greater or equal to 1.000

C) greater or equal to 0.150

D) greater or equal to 0.700

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42. What is the default U-factor assigned to an insulated metal opaque door (other than rolling)?

A) 0.6

B) 1.2

C) 0.9

D) 0.5

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43. If conflicts occur between provisions of this code and referenced codes and standards, which provisions shall apply?

A) The provisions of this code

B) The most recently adopted standard

C) The provisions of the referenced code or standard

D) The requirement deemed most restrictive by the AHJ

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44. DCV is required for spaces in Climate Zone 5A that are larger than 250 square feet and have a high occupant density. What is the minimum floor area threshold for requiring DCV in Climate Zones 0A and 1A?

A) 500 square feet

B) 350 square feet

C) 100 square feet

D) 250 square feet

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45. The unit controller must be capable of manually initiating each operating mode so that the operation of compressors, economizers, fans, and what else can be independently tested and verified?

A) The thermal energy storage

B) The heating system

C) The dehumidification controls

D) The refrigeration system

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46. For historic buildings, who must sign the report demonstrating that code compliance would threaten the historic function of the building?

A) The general contractor

B) A registered design professional or a representative of the State Historic Preservation Office or the historic preservation authority having jurisdiction

C) The code official

D) A representative of the local planning commission

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47. In the three-step process of series energy recovery, which step is the mechanical cooling of the airstream performed for?

A) Reheating

B) Dehumidification

C) Precooling

D) Preheating

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48. An FDD system must sample HVAC system performance at least how often?

A) Once every 30 minutes

B) Once every hour

C) Once every 15 minutes

D) Once every 20 minutes

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49. To qualify under C403.17, a clean water pump must have a flow rate of 25 gallons per minute (1.58 L/s) or greater at its best efficiency point (BEP) at what condition?

A) Full impeller diameter

B) Variable speed operation

C) 50% of maximum flow

D) Minimum impeller diameter

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50. For spaces where additional lighting is installed for decorative appearance or highlighting art/exhibits, what is the maximum additional lighting power allowance limit (W/ft2) for lobbies?

A) 0.70 W/ft2

B) 0.55 W/ft2

C) 0.40 W/ft2

D) 0.66 W/ft2

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51. What is the maximum angular range from true west to the north in the northern hemisphere in which a surface is considered west-oriented?

A) Less than 22.5 degrees

B) 45 degrees

C) 90 degrees

D) 67.5 degrees

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52. Approved software tools for simulated building performance must be capable of modeling at least how many thermal zones?

A) Five

B) Fifteen

C) Eight

D) Ten

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2024 Commercial Energy Inspector – Practice Quiz (Untimed)

“This untimed practice quiz simulates the ICC exam format, giving you full exposure to real-style questions while allowing unlimited time to navigate, learn, and build confidence without time pressure.”