Practice Test Geeks(HERS) Home Energy Rater Certification Practice Test
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Energy Modeling Software Flashcards

7 cards from real HERS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Energy Modeling Software flashcards as text

  1. A rater discovers that the energy model shows a HERS Index of 68, but the builder wants to claim a HERS 65. What should the rater do?

    Answer: Identify which inputs may be inaccurate and re-verify field measurements before changing the model

    The rater must re-verify field conditions and ensure all inputs are accurate before the model can reflect a different index — fabricating data is a RESNET violation.

  2. What is the difference between a 'confirmed' rating and a 'sampled' rating in HERS software submissions?

    Answer: Confirmed ratings are fully tested; sampled ratings rely on a tested sample unit within a provider sampling protocol

    Under RESNET's sampling protocol, some homes in a subdivision can use test results from a sampled unit, while confirmed ratings require individual testing of each home.

  3. In REM/Rate, which ceiling type entry should be used for a vaulted ceiling with insulation between rafters?

    Answer: Cathedral ceiling with continuous insulation cavity

    A vaulted ceiling insulated between rafters is modeled as a cathedral ceiling in REM/Rate, with the rafter cavity depth determining maximum R-value.

  4. When modeling a photovoltaic (PV) solar system in HERS software, which input most significantly determines the PV credit applied to the HERS Index?

    Answer: Array wattage (kW DC), orientation, tilt, and shading factor

    The PV array size, orientation, tilt, and any shading losses determine the annual kWh generation credit that reduces the HERS Index.

  5. What is the purpose of the 'whole-house mechanical ventilation' credit in HERS energy software?

    Answer: It ensures indoor air quality compliance is documented and may offset infiltration reduction credits

    Mechanical ventilation systems provide required fresh air in tight homes and are documented in the software to satisfy ASHRAE 62.2 compliance checks.

  6. A rater enters an above-grade wall insulation R-value that is higher than what was actually installed. What is the most likely consequence?

    Answer: The HERS Index will be artificially low, resulting in an inaccurate and potentially fraudulent rating

    Overstating insulation values reduces modeled heat loss, producing an unrealistically low HERS Index and violating RESNET standards for accurate field verification.

  7. In EnergyGauge USA, what does the 'Annual Energy Cost' output represent?

    Answer: The estimated annual cost based on modeled energy consumption and entered local utility rates

    EnergyGauge USA multiplies modeled annual energy consumption by the utility rates entered for the project location to estimate annual energy cost.