Which of the following is the best device for removing standing water from a
crawl space?
B. Sump Pump
Which of the following is true about common gas storage water heaters?
B. Have standby losses of about 22%
How many BTUs are required to heat a pound of water from 40 F to 70 F?
D. 30
Which of the following results from excessive cold-weather air leakage across
the building enclosure?
B. Dry indoor air
A return duct leak that is located in a garage is a health and safety concern
because of which of the following?
B. The return duct leak could introduce pollutants that are commonly found in
the garage to the house
When air sealing in a cold climate, where is the most effective area to seal?
,A. Attic plane
Which of the following could cause backdrafting of equipment in conditioned
space?
B. A supply duct disconnected in an unconditioned, ventilated attic
Which of the following may be considered to be a health and safety hazard?
B. Vent free combustion appliance
Which of the following is not a primary heat transfer mechanism?
B. Insolation
Which of the following are certain drawbacks to oversizing a central air
conditioning system?
D. All of the above (Lower efficiency, Short cycling, Poor dehumidification)
What is the U-value of an R-3 window?
B. 0.33
SEER ratings for central air conditioning systems typically fall within which of
the following ranges?
, C. 13 to 16
AD
When you heat up a given volume of air, what happens to the quantity of
water vapor it can hold?
A. It increases
Which of the following are required to preform heating and cooling load
calculations?
E. All of the above (Window types and areas; R-values floor, ceiling and walls;
House orientation; Estimate of infiltration rate)
When conducting a duct blaster test, the best place to put the supply
reference pressure probe is placed in...
C. The supply trunk
A 200 square foot wall with an R-value of 12 has a 30 square foot window with
a U-factor of 0.8. What is the approximate weighted R-value for this wall?
B. 5.3
A 100 square foot wall with an R-value of 10 has a 10 square foot window with
a U-value of one. What is the approximate weighted R-value for this wall?