BPI Indoor Air Quality 3

Question 1

Which active radon mitigation system is most commonly installed in homes with basements or slabs-on-grade to reduce indoor radon levels?

Accepted Answer

Sub-slab depressurization (SSD) system

Answer

Positive pressurization using a supply fan

Answer

Mechanical crawlspace ventilation fans

Answer

Whole-house heat recovery ventilation

Question 2

What is the recommended primary strategy for reducing VOC concentrations in a newly constructed or recently renovated home?

Accepted Answer

Aggressive ventilation with outdoor air to flush out off-gassed chemicals

Answer

Installing HEPA air filtration throughout the house

Answer

Applying UV-C light treatment to all interior surfaces

Answer

Using activated carbon filters in the HVAC return

Question 3

Lead-based paint in older homes poses the greatest health hazard when it is in which condition?

Accepted Answer

Deteriorating, peeling, chipping, or disturbed during renovation

Answer

Intact and firmly adhered to an interior painted surface

Answer

Covered and encapsulated beneath newer paint layers

Answer

Located on exterior surfaces exposed to weathering

Question 4

Asbestos-containing materials (ACMs) in older homes present the greatest health risk when they are in what state?

Accepted Answer

Friable, crumbling, or mechanically disturbed, releasing fibers into the air

Answer

Visually identifiable as white or gray insulation materials

Answer

Located in below-grade spaces such as basements

Answer

Exposed to chronic moisture infiltration over time

Question 5

What is the primary purpose of the combustion safety test sequence performed during a BPI whole-house assessment?

Accepted Answer

To identify conditions that could cause backdrafting or spillage of combustion gases into the living space

Answer

To measure the Annual Fuel Utilization Efficiency (AFUE) of heating equipment

Answer

To determine the annual fuel consumption rate of all combustion appliances

Answer

To assess the structural soundness and clearances of the chimney flue

Question 6

Which term describes the reversal of normal flue gas flow in a vented combustion appliance, causing combustion byproducts to enter the living space?

Accepted Answer

Backdrafting, where negative house pressure reverses flue gas direction

Answer

Over-firing, causing excessive heat output and flue gas velocity

Answer

Short-cycling, where the burner shuts off before completing a full heat cycle

Answer

Combustion dilution, where excess air reduces efficiency

Question 7

According to BPI standards, what is the maximum acceptable carbon monoxide (CO) concentration in undiluted flue gases from a combustion appliance before it must be shut down?

Accepted Answer

400 ppm

Answer

35 ppm

Answer

100 ppm

Answer

800 ppm