BPI Health, Safety & Energy Efficiency 3 — Questions and Answers
Question 1: What is the primary purpose of a spillage test on an atmospherically vented water heater?
- To measure flue gas temperature
- To verify combustion gases are not entering living space (Correct answer)
- To check gas pressure at the burner
- To measure fuel consumption rate
Correct answer: To verify combustion gases are not entering living space
A spillage test confirms that combustion gases exit through the flue rather than spilling into the living area, indicating proper draft.
Question 2: Per BPI protocol, what action should a building analyst take if they detect visible mold covering more than 10 square feet?
- Clean it immediately with bleach and proceed with testing
- Apply encapsulant and continue the audit
- Refer the homeowner to a mold remediation professional before proceeding (Correct answer)
- Document the finding and complete the audit normally
Correct answer: Refer the homeowner to a mold remediation professional before proceeding
Mold exceeding 10 sq ft is classified as a significant health hazard requiring professional remediation before energy work proceeds.
Question 3: Which energy efficiency measure can INCREASE radon levels in a home if not properly addressed?
- Adding attic insulation
- Air sealing the building envelope (Correct answer)
- Installing a heat pump water heater
- Upgrading to LED lighting
Correct answer: Air sealing the building envelope
Air sealing reduces natural ventilation, which can concentrate radon that enters from soil, requiring radon mitigation alongside tightening.
Question 4: What is the recommended maximum CO level measured at the flue outlet of a gas appliance before it is considered an urgent health hazard?
- 35 ppm
- 100 ppm
- 200 ppm air-free
- 400 ppm air-free (Correct answer)
Correct answer: 400 ppm air-free
BPI considers flue gas CO readings above 400 ppm air-free an urgent health hazard requiring immediate appliance shut-down.
Question 5: Which moisture issue is most commonly caused by air sealing a crawl space without providing adequate ventilation or conditioning?
- Condensation on cold water pipes
- Ground moisture accumulation and wood rot (Correct answer)
- Ice damming on the roof
- Efflorescence on masonry walls
Correct answer: Ground moisture accumulation and wood rot
An unvented crawl space without a ground vapor barrier and conditioned air allows soil moisture to accumulate, leading to rot and mold.
Question 6: What distinguishes an HRV from an ERV in terms of moisture transfer?
- HRVs transfer both heat and moisture; ERVs transfer only heat
- ERVs transfer both heat and moisture; HRVs transfer only heat (Correct answer)
- Both transfer moisture identically
- Neither transfers moisture between airstreams
Correct answer: ERVs transfer both heat and moisture; HRVs transfer only heat
ERVs (Energy Recovery Ventilators) exchange both sensible heat and latent moisture, while HRVs (Heat Recovery Ventilators) exchange only sensible heat.
Question 7: A homeowner's gas range lacks a range hood vented to the exterior. What is the primary health concern for BPI auditors?
- Increased heating loads from the hot appliance
- Combustion pollutants and moisture released into living space (Correct answer)
- Excessive kitchen lighting energy use
- Refrigerant leaks from nearby appliances
Correct answer: Combustion pollutants and moisture released into living space
Unvented gas cooking releases NO2, CO, and moisture directly into living space, creating indoor air quality hazards especially in tight homes.
BPI Health, Safety & Energy Efficiency 3
What is the primary purpose of a spillage test on an atmospherically vented water heater?