BPI Building Science Principles EXAM STUDY
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Home performance - ANSWER ✔ Systematic approach to improving the
comfort, health, safety, energy efficiency, and durability of a house
2. Includes energy usage, occupant health and safety, indoor air quality,
occupant comfort, and durability of materials
3. Big Three - ANSWER ✔ Heat, air, and moisture
4. Building science - ANSWER ✔ The collective principles of physics,
chemistry, and thermodynamics which govern home performance
5. Components of a house - ANSWER ✔ Building, mechanicals, environment,
occupants
6. Building - ANSWER ✔ The structure of the house itself - foundation, walls,
roof, windows, and door (aka "building envelope")
7. Mechanicals - ANSWER ✔ Heating, cooling, ventilation, electrical and
plumbing systems
,8. Environment - ANSWER ✔ Refers to managing the indoor environment as
the exterior environment is changing
9. Occupants - ANSWER ✔ People as a distinct building component because
home performance primarily deals with existing, occupied homes
10.The beginning and end of a system that may do things in a house that affect
other components and are impacted by comfort and air quality
11.Interacting relationships - ANSWER ✔ How components interact
holistically in a system; a relationship where action taken on one component
causes reactions or changes in other components or worsens certain pre-
existing conditions (and increases their likelihood of producing negative
effects)
12.the difference in measured air pressure between two areas - ANSWER ✔
delta P
13.the difference in temperature between two areas - ANSWER ✔ delta T
14.a material used for controlling air flow - ANSWER ✔ air barrier
15.how air exchange rate is typically expressed - ANSWER ✔ ACH (air
changes per hour)
16."a measure of how efficiently a furnace or boiler converts fuel to heat, on
average, over a typical year" - ANSWER ✔ AFUE (annual fuel untilization
efficiency)
,17.the number of times the interior volume of air changes over in one hour -
ANSWER ✔ air exchange rate
18.the practice of installing appropriate materials to stop airflow in certain areas
of a house - ANSWER ✔ air sealing
19.the movement of air in a house - ANSWER ✔ airflow
20.a formula that energy modeling software uses to estimate a house's energy
usage - ANSWER ✔ algorithm
21.an inert gas that is placed between the panes in multi-pane windows to
improve the window's thermal performance - ANSWER ✔ argon
22.a type of heating system vent in which combustion by-products exhaust from
the house up through a chimney by stack effect due to the natural bouyancy
of hot gases - ANSWER ✔ atmospheric venting
23.7.1. The Home Energy Score uses information about a house's _____ to rate
its energy efficiency on a scale of 1 to 10.
a. assets
b. use
c. construction
d. location - ANSWER ✔ a. assets*
b. use
c. construction
d. location
, 24.7.2. The Home Energy is determined by:
a. 2009 International Energy Conservation Code
b. 2012 International Energy Conservation Code
c. ENERGY STAR* Certified Homes, Version 3
d. an asset assessment that isn't tied to code - ANSWER ✔ a. 2009
International Energy Conservation Code
b. 2012 International Energy Conservation Code
c. ENERGY STAR* Certified Homes, Version 3
d. an asset assessment that isn't tied to code*
25.7.3. Which of the following is eligible for a Home Energy Score?
a. multifamily building containing < 4 units
b. multifamily building with ≤ 3 stories above grade
c. single-family house or townhouse
d. apartment-style condominium - ANSWER ✔ a. multifamily building
containing < 4 units
b. multifamily building with ≤ 3 stories above grade
c. single-family house or townhouse*
d. apartment-style condominium
26.7.4. Which of the following is true about the result of a Home Energy Score?
a. scores can be directly compared for any houses in any part of the
country
b. scores can be directly compared to similar houses in any part of the
country
c. the estimated annual savings will be the same for houses with similar
assets
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Home performance - ANSWER ✔ Systematic approach to improving the
comfort, health, safety, energy efficiency, and durability of a house
2. Includes energy usage, occupant health and safety, indoor air quality,
occupant comfort, and durability of materials
3. Big Three - ANSWER ✔ Heat, air, and moisture
4. Building science - ANSWER ✔ The collective principles of physics,
chemistry, and thermodynamics which govern home performance
5. Components of a house - ANSWER ✔ Building, mechanicals, environment,
occupants
6. Building - ANSWER ✔ The structure of the house itself - foundation, walls,
roof, windows, and door (aka "building envelope")
7. Mechanicals - ANSWER ✔ Heating, cooling, ventilation, electrical and
plumbing systems
,8. Environment - ANSWER ✔ Refers to managing the indoor environment as
the exterior environment is changing
9. Occupants - ANSWER ✔ People as a distinct building component because
home performance primarily deals with existing, occupied homes
10.The beginning and end of a system that may do things in a house that affect
other components and are impacted by comfort and air quality
11.Interacting relationships - ANSWER ✔ How components interact
holistically in a system; a relationship where action taken on one component
causes reactions or changes in other components or worsens certain pre-
existing conditions (and increases their likelihood of producing negative
effects)
12.the difference in measured air pressure between two areas - ANSWER ✔
delta P
13.the difference in temperature between two areas - ANSWER ✔ delta T
14.a material used for controlling air flow - ANSWER ✔ air barrier
15.how air exchange rate is typically expressed - ANSWER ✔ ACH (air
changes per hour)
16."a measure of how efficiently a furnace or boiler converts fuel to heat, on
average, over a typical year" - ANSWER ✔ AFUE (annual fuel untilization
efficiency)
,17.the number of times the interior volume of air changes over in one hour -
ANSWER ✔ air exchange rate
18.the practice of installing appropriate materials to stop airflow in certain areas
of a house - ANSWER ✔ air sealing
19.the movement of air in a house - ANSWER ✔ airflow
20.a formula that energy modeling software uses to estimate a house's energy
usage - ANSWER ✔ algorithm
21.an inert gas that is placed between the panes in multi-pane windows to
improve the window's thermal performance - ANSWER ✔ argon
22.a type of heating system vent in which combustion by-products exhaust from
the house up through a chimney by stack effect due to the natural bouyancy
of hot gases - ANSWER ✔ atmospheric venting
23.7.1. The Home Energy Score uses information about a house's _____ to rate
its energy efficiency on a scale of 1 to 10.
a. assets
b. use
c. construction
d. location - ANSWER ✔ a. assets*
b. use
c. construction
d. location
, 24.7.2. The Home Energy is determined by:
a. 2009 International Energy Conservation Code
b. 2012 International Energy Conservation Code
c. ENERGY STAR* Certified Homes, Version 3
d. an asset assessment that isn't tied to code - ANSWER ✔ a. 2009
International Energy Conservation Code
b. 2012 International Energy Conservation Code
c. ENERGY STAR* Certified Homes, Version 3
d. an asset assessment that isn't tied to code*
25.7.3. Which of the following is eligible for a Home Energy Score?
a. multifamily building containing < 4 units
b. multifamily building with ≤ 3 stories above grade
c. single-family house or townhouse
d. apartment-style condominium - ANSWER ✔ a. multifamily building
containing < 4 units
b. multifamily building with ≤ 3 stories above grade
c. single-family house or townhouse*
d. apartment-style condominium
26.7.4. Which of the following is true about the result of a Home Energy Score?
a. scores can be directly compared for any houses in any part of the
country
b. scores can be directly compared to similar houses in any part of the
country
c. the estimated annual savings will be the same for houses with similar
assets
