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1. Question

What is a common cause of noise in ducts?

Undersized ducts
Oversized ducts
Undersized equipment
Properly sized ducts

2. Question

What is the simple payback, in years, for a measure that costs $672.00 and saves $117.56 per year?

4.72 years
5.72 years
6.72 years
7.72 years

3. Question

During a blower door test, initial pressure readings are as follows:

House = 50Pa.

Fan = 20Pa.

What is the next step?

Check for an open window in the building envelope
Turn the fan speed up, if it is not already at the highest setting
Install the low flow device provided with the blower door
Increase the house pressure and continue with the test

4. Question

What information do material safety data sheets provide?

Handling instructions
Operating guidelines
Product warranty
Code compliance

5. Question

Which device can be used to obtain an image showing the thermal characteristics of the building envelope?

A polaroid camera
An infrared camera
An ordinary digital camera
A spot radiometer

6. Question

What specific information can be determined from an initial CFM50 reading?

The equivalent ventilation area
The relative size and location of leakage
The relative size of equivalent leakage area
The approximate location of leakage

7. Question

According to BPI National Standards, what is the maximum amount of carbon monoxide allowed at 5 minutes of burner operation in the undiluted flue gases of a central furnace?

200 ppm air free
200 ppm as measured
400 ppm air free
400 ppm as measured

8. Question

A door opening is 36" wide by 80" tall. How many square feet does that represent?

9.8 sq. ft.
20 sq. ft.
232 sq. ft.
2880 sq. ft.

9. Question

What must be done to ensure the proper performance of an air-permeable insulation such as fiber glass?

Air movement through the insulation must be prevented
The insulation must be protected from exposure to direct sunlight
The insulation must be installed within a ventilated building cavity
An air gap must be provided in front of the insulation

10. Question

What type of information can a blower door test provide about a building?

The R-values of the building's insulation
The proper venting of the combination appliances
The current moisture level in the building
The location of air leaks through the building envelope

11. Question

What is the proper sampling location for measuring carbon monoxide for an appliance with a draft hood?

Over the fire
Inside the draft hood
After the draft hood
Before the draft hood

12. Question

Which of the following is the most appropriate response when a customer requests that you do something that is prohibited by your company's policies?

Ignore the policy and do what the customer requested.
Inform the customer that you will request the company changes its policy.
Inform the customer you will make a one time exception and proceed with their request.
Inform the customer that your company policy prohibits complying with their request.

13. Question

Which of the following accurately describes stack effect?

It is a force that drives infiltration and exfiltration with relation to building height.
It is a force that drives infiltration and exfiltration with relation to building location.
It is a force that is induced by wind pressure with relation to building height.
It is a force that is induced mechanically with relation to building location.

14. Question

According to BPI Standards, what is the lowest ambient CO level that would require immediate termination of the inspection?

9 ppm
50 ppm
70 ppm
100 ppm

15. Question

What is calculated by multiplying length by width by height?

The area
The mass
The surface area
The volume

16. Question

A window has the following dimensions:

-24 inches wide,

-36 inches tall

What is the area of the window?

864 sq.ft
72 sq.ft
10 sq.ft
6 sq.ft

17. Question

If an exterior wall has an R-value of 21, what is the U-value?

0.048
0.21
0.48
2.1

18. Question

In what direction does air always move?

From higher pressure to lower pressure
From lower pressure to higher pressure
From inside to outside
From outside to inside

19. Question

What is indicated by steady blue flames on gas combustion equipment?

The equipment is operating at peak efficiency.
Complete combustion is taking place.
The equipment is venting properly.
The combustion burners are ignited.

20. Question

What is typically the result of installing lighting retrofits?

Wattage is increased, whereas lumens are maintained at pre-installation levels.
Wattage is increased, whereas lumens are reduced.
Wattage and lumens are both reduced.
Wattage is reduced, whereas lumens are maintained at pre-installation levels.

21. Question

Which set of conditions should be checked if a gas oven is producing excessive CO?

Door alignment, primary air, and gas pressure
Burner alignment, primary air, and gas pressure
The gas line, the gas cock, and specific gravity
Vent pressure, vent temperature, and burner alignment

22. Question

What should be the first priority in addressing indoor air quality problems?

Dilution
Filtration
Source control
Occupant relocation

23. Question

If a water heater has been left vented into a chimney by itself after another appliance was removed from the same flue, then the building analyst should next

Add a draft inducer
Refer to a vent table
Replace the chimney
Install a chimney liner

24. Question

Which of the following appliances typically has the greatest potential for energy savings?

A television
A refrigerator
An electric range
A clothes dryer

25. Question

A single-story house has the following dimensions:

-Length 40 ft.

-Width 20 ft.

-Ceiling Height 10 ft.

What is the volume of the house?

600 cubic feet
1,200 cubic feet
7,200 cubic feet
8,000 cubic feet

26. Question

A building's volume is measured in terms of

Cubic feet
Board feet
Square feet
Linear feet

27. Question

What determines the rate of airflow through an opening?

The size of the hole and the pressure difference across it
The friction rate and the pressure difference across it
The size of the hole and the friction rate
The degree of turbulence and the velocity

28. Question

Of the following choices, which would be the least important when creating a home energy retrofit work scope?

Finances of the homeowner
Products and services offered
Performance of the building
Diagnostic testing findings

29. Question

What is the recommended domestic hot water temperature at the fixture?

110 degrees F
120 degrees F
130 degrees F
140 degrees F

30. Question

Stack effect occurs when air densities are:

Increasing at the same rate on the inside as on the outside of a building
Different on the inside from those on the outside of the building
The same on the inside as on the outside of a building
Decreasing at the same rate on the inside as on the outside of a building

31. Question

If pressure measurement across a closed bedroom door when the air handler is on reads 8 Pa WRT the main body of the house, the reading indicates that

There is more supply than return in the room
There is more return than supply in the room
Air is being pulled into the bedroom
Duct sealing is needed

32. Question

Which of the following is included in the measurements for the conditioned floor area?

A cantilever with a finished floor
A garage
A chimney protruding out from the wall
An upper floor open to the conditioned space below

33. Question

A British thermal unit (BTU) is defined as the amount of energy required to raise

One kilogram of water one degree C
One liter of water one degree C
One pound of water one degree F
one gallon of water one degree F

34. Question

In order to qualify as high-density cellulose insulation, the insulation must measure at least how many pounds per cubic foot?

1.5
2.5
3.5
4.5

35. Question

Which of the following products is the best option for air-sealing most plumbing penetrations?

Fiber glass insulation
Aerosol spray foam
Duct Tape
Rigid foam

36. Question

Sunlight streaming through a window is an example of

Conduction
Convection
Radiation
Emissivity

37. Question

According to BPI National Standards, what most appropriate action should be taken if it is determined that there is insufficient combustion air for a natural draft appliance?

The homeowner should be notified
The appliance should be replaced
Combustion air should be installed
Notify your supervisor

38. Question

A building has the following conditions:

-Total Wall area is 1984 square feet

-Exterior doors are 36" wide by 80" tall and there are 2 doors

-Windows are 30" wide by 54" tall, and there are 16 windows

What is the net square footage of the wall?

2204 sq. ft.
1933 sq. ft.
1784 sq.ft.
1764 sq. ft.

39. Question

What is the primary benefit of installing cellulose at high density?

Reduced air infiltration
Reduced water intrusion
An effective vapor barrier
An effective air barrier

40. Question

In what direction does moisture typically migrate?

From outside to inside
From inside to outside
From dry to wet
From wet to dry

41. Question

High relative humidity in a home can be caused by which of the following?

High occupancy rates
Single pane windows
Sealed combustion appliances
Undersized air conditioner

42. Question

What component of a wood-based, double glazed window has the largest heat transfer?

The upper sash
The glazing material
The nailing flange
The metal edge spacer

43. Question

What is the minimum number of 4' x 8' sheets of foam board needed to cover a section of wall that is 4' tall and 25' long?

2
3
4
8

44. Question

If the R-values of a wall assembly in series from outside to inside are 0.17, 1.4, 0.77, 11, 0.56, and 0.68, what is the U-value of the assembly?

0.069
0.089
11.24
14.58

45. Question

During the course of a day the range of temperatures in degrees Fahrenheit are as follows:

72 High

38 Low

How many heating degree days (Base 65) have occurred?

55
27
10
7

46. Question

What is an acceptable strategy to reduce the risk of mold and mildew in a home's conditioned space?

Installing powered attic ventilation
Connecting downspouts to the foundation drain
Installing low-flow showerheads
Installing local mechanical ventilation in the affected areas

47. Question

What is air exfiltration?

Uncontrolled movement of indoor air out of a building
Uncontrolled movement of outdoor air into a building
Controlled movement of indoor air out of a building
Controlled movement of outdoor air into a building

48. Question

Houses with an attached garage should have at least one carbon monoxide detector installed

Per manufacturers instruction
Per floor per manufacturers instruction
In the garage per manufacturers instruction
In each bedroom per manufacturers instructions

49. Question

What can heating degree days be used to calculate?

Internal heat gains
Peak heating loads
Annual heating loads
Building tightness limits

50. Question

Energy performance of a building in terms of the way it is built rather than the way it is used is known as:

Asset rating
Annual Savings
Operation rating
Heating and/or cooling load

51. Question

According to BPI Standards, what is the minimum CFM rating on a demand-controlled exhaust fan within a kitchen?

50 CFM
75 CFM
100 CFM
125 CFM

52. Question

How many pounds of material would be needed to install dense pack cellulose in a 2" x 4" framed wall measuring 8' x 25'?

19
116
171
233

53. Question

Why are vapor barriers (retarders) used?

To reduce air leakage in the building enclosure
To slow the diffusion of moisture through the building materials
To prevent bulk moisture from entering the building enclosure
To impede the flow of volatile organic compounds into the living space

54. Question

The vent pressure of an atmospherically vented appliance is measured as a test for which of the following?

Carbon dioxide
Draft
Stack temperature
Velocity

55. Question

What is the main purpose of energy modeling software?

Selling a work scope
Homeowner education
Correcting health and safety concerns
Estimating energy use and or energy savings

56. Question

If a certain room in a conditioned home gets overheated during the summer, the most likely cause is:

A large west-facing window area
A large north-facing window area
Low relative humidity
High relative humidity

57. Question

What determines peak electrical energy demand?

The total rated wattage of the electrically operated devices present
The total consumption of the electrically operated devices present
The average total wattage of the electrically operated devices in use during a given day
The highest total wattage of the electrically operated devices in use at a given time

58. Question

For every cubic foot of air that enters a house, how many cubic feet must exit?

.5
1
1.5
2

59. Question

How is carbon monoxide generated?

From incomplete combustion
From a cracked heat exchanger
From exhaust ventilation
From improper venting

60. Question

What is a Pascal?

A measure of moisture resistance
A unit of pressure
A unit of thermal resistance
A unit of velocity

61. Question

Air movement due to temperature gradients is referred to as

Convection
Radiation
Ventilation
Conduction

62. Question

Each of the following would be affected if the R-value input for the building model does not match the observed value, EXCEPT:

The asset rating
The annual savings
The operational rating
The heating and/or cooling load

63. Question

What is the most appropriate resource when collecting data will be used to create a home energy retrofit work scope?

A sketch of the home
An interview with the customer
The supervisor's recommendations
A building energy model

64. Question

In buildings with attached garages, the occupants' health and safety would be best enhanced by

Installing a vapor barrier between the garage and the living space
Maintaining a positive pressure in the garage with reference to the house
Providing a properly sized gaseous carbon filter system
Eliminating any pollutant pathways into the living space

65. Question

Pressure differential measurements between conditioned and unconditioned spaces can be used to

Determine effective R-value of insulation
Diagnose the effectiveness of vapor barriers
Prioritize air sealing and insulation measures
Measure the airflow through the air handling unit

66. Question

If a fixture containing a 100 watt bulb burns for 20 hours, how many kilowatt hours of electricity have been consumed?

0.2 kWh
2 kWh
20 kWh
2000 kWh

67. Question

What is the volume of a wall given the following conditions:

2" x 4" framing
8' high x 32' long
Includes two windows that are 24" x 36" each and;
One door that is 80" x 36"

74 cubic feet
77 cubic feet
81 cubic feet
85 cubic feet

68. Question

A building is measured with the following conditions:

-The house-to-outside pressure differential is 50 Pa

-The house-to zone pressure differential is 20 Pa

What does this indicate about the tested zone?

It is connected more to the outside than to the reference zone
It is connected more to the inside than to the reference zone
It is equally connected to the reference zone.
It is isolated from the reference zone.

69. Question

Which of the following is a property of warm air?

It is more dense than colder air.
It is less dense than colder air.
It has a lower moisture capacity than colder air.
It has the same relative humidity as colder air.

70. Question

What is the design intent of mechanical ventilation?

To provide space heating and cooling using fresh air
To pressurize building space and reduce energy consumption
To provide acceptable energy efficiency
To provide acceptable IAQ in buildings.

71. Question

Which of the following work scope measures should be prioritized as the most important?

Clean and tune of an oven
Repair a combustible gas leak
Air seal an attached garage
Correcting worst case spillage of an appliance

72. Question

When it is not feasible to evaluate the refrigerator replacement and metering, data from which of the following should be used?

The Gas Appliance Manufacturers Association
The Association of Home Appliance Manufacturers
The Air Conditioning and Refrigeration Institute
The American National Standards Institute

73. Question

Which of the following insulation types has the highest R-value per inch?

High density cellulose
High density fiberglass
Expanded polystyrene
Polyisocyanurate

74. Question

Blower door fan pressure is measured in

CFM 25
CFM 50
Pa
Psia

75. Question

Given a U-value of 0.025, what is the R-value?

4
13
19
40

76. Question

A building is experiencing the following conditions:

Indoor air temperature 68 degrees F

Outdoor air temperature 44 degrees F

In what direction, if any, will the building's heat flow?

From outdoors to indoors
From indoors to outdoors
Almost exclusively to the transition zones
The heat will not flow

77. Question

Which of the following identifies three factors that cause internal heat gain?

Occupants, lights, appliances
Occupants, lights, exfiltration
Insulation, windows, appliances
Insulation, infiltration, windows

78. Question

Which of the following information is calculated based on the measurements of a sling psychrometer?

Wet bulb temperature
Radiant surface temperature
Dew point
Relative humidity

79. Question

A knee wall is 4' high and the knee wall floor is 3' wide. What is the length of the sloped roof area in this knee wall space?

3
5
7
8

80. Question

The highest relative humidity in an outside wall assembly is always found at the

Drywall
Exterior sheathing
First condensing surface
Cavity insulation

81. Question

If an attic has a large hole that goes through to the basement, then the hole should

Be left alone if no air movement is detected.
Have cellulose blown into it.
Be air sealed at the top as well as the bottom.
Be filled with fiberglass and then covered with cellulose.

82. Question

What is the best ratio to consider in determining a cost-effective improvement?

Savings to loan
Savings to investment
Investment to savings
Investment to loan

83. Question

Where is the drainage plane in a building with cavity-wall construction?

At the outermost building envelope component material
Within the inner-most building envelope component material
At the exterior cladding with flashing that prevents water from penetrating the wall assembly
Within the space between the exterior cladding and the wall systems used to redirect moisture

84. Question

Which variable has the greatest effect on the natural air leakage rate in a building?

The effective R-value of attic insulation
The location of the vapor barrier
The location of any holes in the envelope
The location of the blower door

85. Question

How is the pressure boundary of a home defined?

As the location of insulation
As the primary plane of airtightness
As the location of the vapor barrier
As the combination of sheathing and exterior finish materials

86. Question

What is the effect, if any, of a 3/4" gap between insulation and an attic joist?

It decreases the effective R-value
It increases the effective R-value
It eliminates the effective R-value
There is no change in the effective R-value

87. Question

Which treatment consistently yields the largest envelope leakage reduction on a wide range of housing stock?

Caulking and weatherstripping
Air-sealing band joists
Window and door replacement
Air-sealing of attic bypasses

88. Question

What is a required preparation for every blower door test?

Positioning the fan with the discharge side to the outdoors
Calibrating the pressure gauges
Sealing the combustion appliance zone from the main body
Ensuring that all combustion appliances are set to pilot

89. Question

When does condensation occur on a surface?

When the dew point temperature of the air in contact with it is greater than the surface temperature
When the dew point temperature of the air in contact with it is less than the surface temperature
When the absolute humidity of the air in contact with it reaches 100 grains/cu.ft
When the absolute humidity of the air in contact with it reaches 1000 grains/cu.ft

90. Question

Which of the following is a measure of resistance to heat flow by conduction?

R-value
U-value
Density
Emissivity

91. Question

Which of the following is a necessary step in preparing for a blower door depressurization test?

Opening all interior doors
Turning on all exhaust fans
Sealing the dryer vents
Sealing supply and return grills

92. Question

Which of the following is typically the most significant source of building envelope air leakage?

Electrical outlets
Attic bypasses
Window and doors
Exterior wall penetrations

93. Question

What is the minimum required slope of a vent connector?

1/4" per foot up from the appliance
1/4" per foot down from the appliance
1/2" per foot up from the appliance
1/2" per foot down from the appliance

94. Question

When analyzing a building's energy consumption what information would be LEAST useful?

Modeling software outputs
The type of housing
Ambient air sampling
A utility bill

95. Question

A proposed project will have the following costs and savings:

Material cost = $100

Labor cost = $400

Annual savings = $125

What is the simple payback calculation given this information?

6.25 years
4 years
3.2 years
0.25 years

96. Question

What is the primary moving force for moisture inside a typical house?

Capillary action
Diffusion
Radiation
Airflow

97. Question

Which of the following, if any, is required on the job site when latex caulk is present?

A material safety data sheet
Lacquer thinner
Spray solvent
Nothing other than caulk and a caulk gun

98. Question

A joist is a framing member of which building component?

Wall
Floor
Stairs
Truss

99. Question

The follwoing measurements were taken of a rectangular building:

-30' wide

-50' long

-9.5' height

What is the total surface area of the exterior walls?

760
1520
14250
28500

100. Question

Under which condition, if any, is it acceptable to exhaust a clothes dryer into the home?

When exhaust is electrically fueled
When the exhaust is filtered through a lint trap
When there is low humidity during heating season
Such a practice is never acceptable.

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