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HERS RATER EXAM PRACTICE TEST HERS RATER EXAM PRACTICE TEST
Typology: Exams
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A HERS score can be used for which of the following? A) LEED for Homes B) Energy Efficient Mortgages C) National Association of Home Builders D) All of the above - ANSWERS-D) All of the above Raters provide what to the builder (3 things) - ANSWERS-1. Rating report
3 main programs that use the HERS index - ANSWERS-1. Energy Star
Overhang measurements are important to - ANSWERS-Determine the window shading Which view shows insulation level and installation - ANSWERS- Sectional view HERS Index is based on these end uses - ANSWERS-Heating, cooling, water heating, lighting, appliances (How Come WHales Like Anchovies... memory tool) An Energy Improvment Morgage Allows: - ANSWERS-The buyer / owner to include the cost of energy efficiency improvements in the mortgage The measure of resistance of a material to heat flow is: - ANSWERS- R-value Where would you find the construction details and location fo attic knee walls? - ANSWERS-Sectional view The Efficiency Rating of an Air Source Heat Pump in heating mode would be expressed as - ANSWERS-HSPF (Heating Seasonal Performance Factor) T/F
Thermostat setting do not effect the HERS index - ANSWERS-True How do you check to see how thick the insulation is in the framed cavities? - ANSWERS-Measure the thickness of window and door jambs EEM (Energy Efficiency Morgages) do not feature... - ANSWERS- Reduced interest rates Which view shows insulation levels and placement - ANSWERS- Sectional View A heat pump water heater's efficiency rating is expressed as - ANSWERS-EF The HERS Index is based on these end uses - ANSWERS-heating, cooling, water heating, lighting, appliances (H C WH L A) (How Come WHales Like Anchovies) What cold weather hazard is most likely to be caused by small positive building pressures? - ANSWERS-condensation in cavities (inside of exterior wall is the cold surface) (vapor moving from inside, out) T/F Chimney bump outs are excluded from exterior measurements - ANSWERS-True
What is the most useful information we get by performing multi-point tests as opposed to the single-point test? - ANSWERS-Estimation of leakage area What is the maximum amount allowed for a Fannie Mae EIM? - ANSWERS-15% of the appraised value of the home What hazard is most likely to be caused by small negative building pressures? - ANSWERS-condensation in cavities (interior wall surface is the cold surface) Per Section 102, tax records much be retained for how long by the rater or provider? - ANSWERS-3 years The period of time in which a batch of homes being rated using a sampling approach must be assessed within (IE the period that all the houses in the sample are in the predrywall phase) - ANSWERS- 30 calendar day maximum If fewer than homes are available for that phase of inspection (30 day window) then the sample must be cut off at the number of homes that are available w/in the 30 days - ANSWERS- 7 To upkeep a sampling period, each participating subdivision within a metropolitan area must complete sampling controls in a minimum of one home in any calendar day period. - ANSWERS- 90
Minimum ratio of tests or inspections per homes in a set of sampling controls - ANSWERS- 1 test or inspection per 7 homes in a given set For each newly started subdivision, sampling may begin only after consecutive homes have been completed without any incidence of failure. - ANSWERS- 3 How does duct leakage affect the stack effect? - ANSWERS-Return leakage increases the stack effect Air sealing this poorly insulated existing home without providing ventilation is likely to cause... - ANSWERS-higher humidity inside In addition to U-factor, SHGC, area and orientation, what other architectural element affects window performance? - ANSWERS- overhang Where is the highest pressure found in the typical distribution system?
How many Pascals equal 1 inch of water column? - ANSWERS- 250 Pa What type of mortgage does not apply to an EEM? - ANSWERS- home equity loan ("HEL-no") (makes sense bc home equity would presumably shift based on green improvements; shifting goal posts(?)) What is the best way to keep mold under control? - ANSWERS- Keeping relative humidity between 30% & 50% (RH 30-50) "Effective" R-value is a marketing term that means... - ANSWERS- Additional R-value has been claimed for characteristics other than resistance to heat flow Reference Home insulation levels are determined by... - ANSWERS- The RATED HOME'S climate zone Physical comfort and discomfort is primarily affected by... - ANSWERS-Air temperature, relative humidity, (mean) radiant temperature, airflow Most ppl will be comfortable with a relative humidity of... - ANSWERS-43% What doesn't generally have an effect on R-value? - ANSWERS-Delta T
Taking a baseline measurement adjusts for which two types of pressure impacts? - ANSWERS-Stack and wind effects how do you calculate the area of windows in an older home - ANSWERS-not just the area of the window, but include sash and frame Efficiency Rating of a Geothermal Heat Pump in cooling mode - ANSWERS-EER If a house is positive W.R.T. outside, what's the dominant duct leakage? - ANSWERS-Return ducts leak more than supply ducts What is one major cause of water vapor through a wall assembly? - ANSWERS-A hole in the pressure boundary (air seal) Heat pumps have an efficiency rating greater than 100% why? - ANSWERS-They MOVE heat ("heat pump") instead of converting fuel to heat A "ton" of cooling capacity is... - ANSWERS-A unit of capacity. Equal to 12,000 Btu's/hr The average surface temp surrounding people is called... - ANSWERS-Mean radiant temperature
Why was RESNET created? (3 main functions) - ANSWERS- 1 ) "To oversee the HERS industry"
wood surfaces that are below the dew point WRT the air are likely to have... - ANSWERS-condensation occur which views shows construction details and locations of attic knee walls? - ANSWERS-sectional view how many kWh are in 1 MBtu? - ANSWERS- 293 kWh An Energy Improvement Mortgage (EIM) allows - ANSWERS-The buyer / owner to include the cost of energy efficient improvements in the mortgage What's the Efficiency Rating of an Air Source Heat Pump in heating mode? - ANSWERS-HSPF (heating seasonal performance factor) EEMs do not feature... - ANSWERS-reduced interest rates Which view shows insulation levels and placement? - ANSWERS- Section View A heat pump water heater's efficiency rating is expressed as... - ANSWERS-EF When conducting a blower door test, you depressurize the house to - 50 Pa with a fan pressure of 20 PA. What should you do? -
Projected ratings are... - ANSWERS-Performed before the home is built or improvements are made What air leakage term is directly related to the volume of a building? - ANSWERS-ACH What is a Provider required to do? - ANSWERS-Conduct QA ratings on your rated homes, check your file documentation, and call for additional training if deficiencies are found T/F ... The Reference Home has the same infiltration rate as the Rated Home? - ANSWERS-False Does NOT have the same infiltration rate as the Rated Home (uses the code minimum levels) Which of the following best describes heat movement by convection... - ANSWERS-heat transfer from one location to another in association with the movement of a fluid or gas (namely, air) Unexpected convection in cavities reduce R-value by... - ANSWERS- Moving air through the insulation, thus increasing the rate of heat flow Convective heat flow is driven by... - ANSWERS-Temperature difference (warmer air is less dense, so even though it involved pressure/density, it's primarily driven by temperature)
Which of the following is not among the 4 environmental factors affecting physical comfort in an indoor space: - ANSWERS-Absolute humidity Who can perform energy ratings? - ANSWERS-A certified HERS Rater What's the difference between an energy efficient mortgage and a conventional mortgage is? - ANSWERS-EEMs allow homebuyers to borrow more money To make tight houses healthier, you should add... - ANSWERS- Ventilation What determines whether or not the house becomes pressurized or depressurized by duct leakage? - ANSWERS-Where the leaks are in the ductwork / distribution system same causation applies whether the leak is in or out of unconditioned space (per HERS textbook Pg. 100) Supply leaks = negative pressurization Return leaks = positive pressurization
In the HERS Reference Home, what is the default efficiency rating for a duct system located in the unconditioned attic and interstitial floor area? - ANSWERS-0. With this air handler in the garage, what is the primary health & safety concern? - ANSWERS-Fertilizer & fuel stored in the garage What determines the rate of heat flow through a material? - ANSWERS-The conductivity of the material How many CF of natural gas are in 2 therms? - ANSWERS- 200 Energy efficient components that save energy in both heating and cooling seasons... - ANSWERS-Reduce both heating & cooling costs Are plumbing penetrations considered in HERS Projected Ratings? - ANSWERS-No Two homes with a HERS score of 50... - ANSWERS-May not be comparable to each other What does not effect the amount of duct leakage? - ANSWERS-type of register 1 inch of water column is equivalent to how many Pascal's? - ANSWERS-250 Pa
Grade I insulation must have.... - ANSWERS-compression or incomplete fill amounting to 2% or less What is needed for "Rated Features" for an air conditioner (cooling equipment) - ANSWERS-1. equipment type
