Free Building Analyst Professional certification exam Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Building Analyst Professional certification exam practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1A furnace spills during the prescribed test. CO is acceptable, and CAZ depressurization is greatest with the air handler running. Which recommendation best follows this pattern?

   1. A.Analyze duct leakage and HVAC-induced pressure imbalancesCorrect answer: A
   2. B.Adjust burner air before examining HVAC-induced pressure effects
   3. C.Reduce the vent diameter before examining room pressure effects
   4. D.Seal CAZ transfer openings before examining pressure imbalances

   Explanation: Annex D directs: "Conduct further analysis of the distribution system to determine if leaky ducts or other HVAC-induced imbalances are the cause of the spillage." The air-handler dependence calls for distribution diagnosis. Burner or vent changes assume an unverified cause, and sealing transfer openings can worsen the pressure restriction.

   Reference: ANSI/BPI-1200-S-2017 Standard Practice for Basic Analysis of Buildings — Annex D, Table D.1.A, printed page 42

2. 2For a proposed retrofit, annual modeled electricity use falls from 12,000 to 9,000 kWh under comparable conditions. What modeled energy savings follow BPI-2400's delta approach?

   1. A.3,000 kWhCorrect answer: A
   2. B.9,000 kWh
   3. C.12,000 kWh
   4. D.21,000 kWh

   Explanation: BPI-2400 defines savings as "a difference (delta simulation) between the modeled energy usage before an energy upgrade (or set of upgrades) and modeled energy use after an upgrade (or set of upgrades)". The reduction is 12,000 − 9,000 = 3,000 kWh. Nine thousand is remaining use, twelve thousand is baseline use, and their sum is not savings.

   Reference: BPI-2400-S-2015 v.2 — Standardized Qualification of Whole-House Energy Savings Predictions by Calibration to Energy Use History — Section 1, Scope, printed page 1

3. 3Spillage occurs with the CAZ door closed, and opening that door relieves the depressurization. Appliance CO is acceptable. Which recommendation directly addresses this result?

   1. A.Add mechanical exhaust from the CAZ to outdoors
   2. B.Improve air transfer between the CAZ and the house coreCorrect answer: B
   3. C.Close transfer grilles between the CAZ and the house core
   4. D.Weatherstrip the CAZ door to reduce air from the house core

   Explanation: Table D.1.A says: "Recommend measures to improve air transfer between the CAZ and the core of the house". Opening the door relieved depressurization, identifying inadequate transfer. Exhausting CAZ air or reducing its connection to the house does not provide the needed transfer.

   Reference: ANSI/BPI-1200-S-2017 Standard Practice for Basic Analysis of Buildings — Annex D, Table D.1.A, printed page 42

4. 4Qualified monthly utility data are available for all fuels. Which pre-retrofit calibration path does BPI-2400 direct the analyst to use?

   1. A.Skip calibration and use typical occupancy assumptions alone
   2. B.Use simplified calibration even though qualified monthly bills are available
   3. C.Use detailed calibration with the qualified utility dataCorrect answer: C
   4. D.Delay pre-retrofit calibration until post-retrofit bills are available

   Explanation: The overview says detailed calibration "shall be used when qualified utility data are available." Available qualified pre-retrofit records support detailed calibration; they do not require waiting for post-retrofit bills or using simplified/default-only treatment.

   Reference: BPI-2400-S-2015 v.2 — Standardized Qualification of Whole-House Energy Savings Predictions by Calibration to Energy Use History — Section 2, Process Overview, printed page 1

5. 5Testing identifies both combustion-appliance spillage and excessive appliance CO. What additional recommendation does ANSI/BPI-1200-S-2017 require?

   1. A.Leave the appliance operating until the next annual inspection
   2. B.Reduce the thermostat setting and regard the appliance as safe
   3. C.Shut down the appliance until a qualified professional services itCorrect answer: C
   4. D.Repeat the measurement next season before requesting service

   Explanation: The Table D.1.A footnote states: "recommend that the appliance be shut down until it can be serviced by a qualified professional." Both spillage and excessive CO trigger this additional recommendation; lowering demand or delaying service does not satisfy it.

   Reference: ANSI/BPI-1200-S-2017 Standard Practice for Basic Analysis of Buildings — Annex D, Table D.1.A footnote, printed page 42

6. 6A home's electricity records qualify for detailed calibration, while its delivered-fuel records qualify only for simplified calibration. How should the fuels be treated under BPI-2400?

   1. A.Use simplified calibration for both fuels because one has limited records
   2. B.Use detailed calibration for electricity and simplified calibration for the delivered fuelCorrect answer: B
   3. C.Use detailed calibration for both fuels regardless of record quality
   4. D.Exclude electricity to avoid using different paths in one home

   Explanation: BPI requires that "the detailed path shall be used for the fuel(s) with qualified data." Each fuel follows the path its evidence supports; weaker records for another fuel do not downgrade qualified records.

   Reference: BPI-2400-S-2015 v.2 — Standardized Qualification of Whole-House Energy Savings Predictions by Calibration to Energy Use History — Section 2, Process Overview, printed page 1

7. 7Appliance CO exceeds the applicable BPI threshold, but no spillage is observed. What advice is required regarding that appliance?

   1. A.Arrange immediate service by a qualified professionalCorrect answer: A
   2. B.Postpone service unless the room CO alarm activates
   3. C.Accept the result because combustion products enter the vent
   4. D.Continue normal use until spillage confirms a second defect

   Explanation: For an unacceptable CO level, Table D.1.B states: "Advise the homeowner/occupant that the appliance should be serviced immediately by a qualified professional". A separate spillage failure or alarm activation is not a prerequisite.

   Reference: ANSI/BPI-1200-S-2017 Standard Practice for Basic Analysis of Buildings — PDF page 47 (printed page 43)

8. 8One fuel's usage records meet neither detailed nor simplified calibration criteria. What does BPI-2400 require for that fuel?

   1. A.Borrow another fuel's calibration factor and report this fuel's savings
   2. B.Substitute national-average use and label this fuel calibrated
   3. C.Fit the model to an unqualified annual estimate and label it calibrated
   4. D.Do not calibrate or report savings for that fuel under these proceduresCorrect answer: D

   Explanation: BPI states "calibration shall not be conducted and savings shall not be reported for that fuel(s)." When neither path qualifies, borrowed factors, national averages or unqualified estimates cannot establish compliant fuel-specific calibration.

   Reference: BPI-2400-S-2015 v.2 — Standardized Qualification of Whole-House Energy Savings Predictions by Calibration to Energy Use History — Section 2, Process Overview, printed page 1

9. 9A natural-gas appliance sample contains 100 ppm as-measured CO and 10.45% oxygen. Using BPI's air-free correction, what is the air-free CO concentration?

   1. A.50 ppm
   2. B.100 ppm
   3. C.150 ppm
   4. D.200 ppmCorrect answer: D

   Explanation: Annex B prints the oxygen correction as "20.9 COAFppm= ( ) × COppm 20.9-O2". The fraction has 20.9 in the numerator and 20.9 − O2 in the denominator. For this natural-gas sample, 20.9/(20.9 − 10.45) × 100 = 200 ppm. Reversing the correction or omitting oxygen dilution gives an incorrect concentration.

   Reference: ANSI/BPI-1200-S-2017 Standard Practice for Basic Analysis of Buildings — Annex B, Carbon Monoxide (CO) Air Free, printed page 35

10. 10For BPI-2400's calibrated asset-based savings method, what changes after operational-model calibration?

    1. A.Apply standardized operating conditions to both pre- and post-retrofit modelsCorrect answer: A
    2. B.Retain actual conditions before retrofit but standardize only after retrofit
    3. C.Standardize conditions before retrofit but retain actual conditions afterward
    4. D.Retain actual occupant conditions in both models without asset standardization

    Explanation: BPI describes models "modified to reflect standardized (assetbased) operating conditions." Both sides of the asset comparison use standardized operation; mixing actual and standardized conditions confounds the comparison, while actual/actual remains an operational comparison.

    Reference: BPI-2400-S-2015 v.2 — Standardized Qualification of Whole-House Energy Savings Predictions by Calibration to Energy Use History — Section 2, Process Overview, printed page 2