QUESTIONS WITH ANSWERS GRADED A+
✔✔What can a manometer and a hose under the closed door of a bedroom indicate
during a blower door test? - ✔✔the room is more or less connected to the outside or
inside than the rest of the home
✔✔What is a manometer? - ✔✔a device used by home performance consultants to
measure air pressure and air flow
✔✔What is a blower door? - ✔✔a device used by home performance consultants to
depressurize or pressurize a building
✔✔What is an exhaust fan flow meter? - ✔✔a device used by home performance
consultants to measure the airflow of mechanical ventilation in a building
✔✔What does ASHRAE stand for? - ✔✔American Society of Heating Refrigerating and
Air-Conditioning Engineers
✔✔What is the BPI threshold for allowable CO in a furnace or boiler vent pipe? -
✔✔<400 ppm air free
✔✔What is the BPI threshold for allowable CO in the water heater flue pipe? - ✔✔<200
ppm air free
✔✔What is the BPI threshold for allowable CO in the exhaust flue of a gas-burning
oven? - ✔✔<225 ppm as measured
✔✔When is the furnace flue pipe considered a cold vent when testing for spillage? -
✔✔in summer and the furnace is not in use
✔✔Is a water heater flue pipe generally considered a warm vent pipe or cold vent pipe?
- ✔✔generally it is warm vent pipe
✔✔For a warm flue pipe appliance, how long should you wait after ignition to decide if
the appliance has failed the spillage test? - ✔✔2 minutes
✔✔For a cold flue pipe appliance, how long should you wait after ingnition to decide if
the appliance is "spilling." - ✔✔5 minutes
✔✔What is the industry standard level of depressurization of a home to measure it's
over all leakiness. - ✔✔-50 pascals
, ✔✔Where are often the greatest air sealing opportunities in the attic to reduce the
overall leakiness of most homes? - ✔✔the attic hatch, the chimney or flue bypasses,
dropped soffits, recessed lights, and interior wall top plates, plumbing stack pipe
✔✔What does BTU stand for? - ✔✔British Thermal Unit
✔✔What does a British Thermal Unit measure? - ✔✔The amount of heat needed to
heat one pound of water, one degree Fahrenheit.
✔✔What is a Therm? - ✔✔100,000 BTUs (often a measure of natural gas consumption)
✔✔What is the R-value per inch of most extruded rigid foamboards? - ✔✔R-5 per inch
✔✔What is the recommended minimum R-value for attic insulaton in a home in WI? -
✔✔R-49
✔✔What is the recommended minimum R-value for walls in a home in WI? - ✔✔R-21
✔✔What is the minimum recommended attic R-value in homes in MN. - ✔✔R-60
✔✔How many minutes does the furnace run before checking CO levels in the flue pipe?
- ✔✔5 min
✔✔Running a gas burning appliance for at least 5 minutes allows the appliance to
reach... - ✔✔it's steady state.
✔✔AFUE- - ✔✔Annual Fuel Utilization Efficiency measures the efficiency of the heating
system (80%-97%)
✔✔SEER- - ✔✔Seasonal Energy Efficiency Ratio measures the efficiency of the cooling
system (10-18)
✔✔HSPF- - ✔✔Heating seasonal performance factor. The number of BTUs per watt
and measures the efficiency of your air-sourced heat pump (7.7-8.2)
✔✔COP in a ground source heat pump - ✔✔Coefficiency of Performance
✔✔What is the mininmum slope of a vent pipe? - ✔✔1/4" rise per foot of run
✔✔R-value of a wall assembly? - ✔✔
✔✔How many watts are used for 100w bulbs for 20 hours? - ✔✔2000 watts