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Free BAP Practice Questions

10 free, exam-style Building Analyst Professional (BAP) practice questions with answers and explanations. No signup required. Work through them below, then take the full free BAP practice test to study every exam domain.

The BAP exam has 60 questions and runs 2 hours 30 minutes.

These 10 free BAP questions are organized by exam domain, so you can see how each part of the Building Analyst Professional blueprint is tested. Reveal the answer and explanation under each question.

Domain 1: Building Science and Energy Fundamentals 25% of exam

Question 1

After air sealing a home from 5,000 CFM50 to 2,000 CFM50, the natural-draft water heater fails the spillage test under worst-case conditions. The MOST appropriate recommendation is:

  1. Remove the air sealing to restore the previous leakage rate
  2. Address the water heater venting or replace with a sealed-combustion unit
  3. Install additional makeup air vents near the water heater
  4. Increase the draft hood opening to improve natural draft
Show answer & explanation

Correct answer: B - Address the water heater venting or replace with a sealed-combustion unit

Question 2

A single-story home measures 30 ft × 50 ft with 8-ft ceilings. The blower door reads 2,400 CFM50. What is the ACH50?

  1. 8.0
  2. 10.0
  3. 12.0
  4. 14.4
Show answer & explanation

Correct answer: C - 12.0

Question 3

A home has insulation on the attic floor, but a large open chase allows air to flow freely from the living space into the attic. This is an example of:

  1. Aligned thermal and pressure boundaries
  2. Misaligned boundaries with a pressure boundary gap
  3. A ventilation feature required by code
  4. Normal construction practice
Show answer & explanation

Correct answer: B - Misaligned boundaries with a pressure boundary gap

Question 4

A homeowner with a heat pump uses a deep thermostat setback at night and recovery in the morning. Their energy bills increase. The MOST likely explanation is:

  1. The thermostat is malfunctioning
  2. Large temperature recovery activates expensive electric resistance strip heat
  3. Heat pumps consume more energy during temperature recovery periods
  4. The utility company increased overnight electricity rates
Show answer & explanation

Correct answer: B - Large temperature recovery activates expensive electric resistance strip heat

Question 5

Which moisture transport mechanism typically causes the MOST concealed moisture damage in building assemblies?

  1. Vapor diffusion through permeable materials
  2. Bulk water flow from exterior sources
  3. Air transport through building envelope gaps
  4. Capillary action along material interfaces
Show answer & explanation

Correct answer: C - Air transport through building envelope gaps

Question 6

A 2,000 sq ft home with 3 bedrooms requires what minimum whole-house ventilation rate per ASHRAE 62.2?

  1. 60 CFM
  2. 75 CFM
  3. 90 CFM
  4. 105 CFM
Show answer & explanation

Correct answer: C - 90 CFM

Question 7

A home assessment reveals: CO detectors missing, combustion appliance spillage, bathroom fans venting to attic, and knob-and-tube wiring in walls to be insulated. How should the analyst prioritize?

  1. Address the least expensive issue first
  2. Address CO/combustion safety first, then other health and safety issues before energy improvements
  3. Only the knob-and-tube issue matters
  4. Energy improvements should proceed first to save money for safety repairs
Show answer & explanation

Correct answer: B - Address CO/combustion safety first, then other health and safety issues before energy improvements

Domain 2: Building Analysis and Diagnostic Assessment 30% of exam

Question 8

When combining air sealing and insulation measures in an energy model, the total savings are typically:

  1. Equal to the sum of each measure's individual savings
  2. Less than the sum of individual savings due to interactive effects
  3. Greater than the sum of individual savings due to synergistic effects
  4. Approximately 150% of the individual savings combined
Show answer & explanation

Correct answer: B - Less than the sum of individual savings due to interactive effects

Question 9

In a recommended work scope, the correct priority order for measures is:

  1. Energy efficiency → Building durability → Health and safety measures
  2. Health and safety → Building durability → Energy efficiency measures
  3. Cost-effectiveness → Energy efficiency → Health and safety measures
  4. Building envelope → Mechanical systems → Energy efficiency measures
Show answer & explanation

Correct answer: B - Health and safety → Building durability → Energy efficiency measures

Question 10

A weatherization program requires SIR ≥ 1.0 for funded measures. Which measure would NOT qualify for program funding?

  1. Duct sealing with SIR of 2.4
  2. Wall insulation with SIR of 1.5
  3. Window replacement with SIR of 0.6
  4. Heat pump installation with SIR of 1.3
Show answer & explanation

Correct answer: C - Window replacement with SIR of 0.6

The rest of the BAP blueprint

The BAP exam also covers these domains. Drill them in the full free practice test:

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