Practice Test Geeks(HERS) Certified Home Energy Rating System Rater Practice Test
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Index and Ratings 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 Index and Ratings flashcards as text

  1. A HERS rater is working in Climate Zone 2 versus Climate Zone 6. How does climate zone affect the HERS Index calculation?

    Answer: Climate zone affects the heating and cooling loads used to model both the rated and reference homes

    Climate zone data drives the heating and cooling degree days used in both the rated and reference home models, affecting calculated energy loads.

  2. Under RESNET HERS standards, what is the minimum number of rough-in inspections required for a confirmed new construction rating?

    Answer: At least one rough-in inspection before drywall is installed

    RESNET requires at least one rough-in field inspection before insulation is covered to verify building envelope features used in the rating.

  3. How does a heat pump water heater (HPWH) affect a home's HERS Index compared to a standard electric resistance water heater?

    Answer: A HPWH lowers the HERS Index because it is two to three times more efficient

    Heat pump water heaters operate at 200–300% efficiency compared to electric resistance, reducing water heating energy use and lowering the HERS Index.

  4. What happens to the HERS Index if a rater discovers after final testing that attic insulation was installed at R-30 instead of the specified R-38?

    Answer: The rater updates the model with the actual R-30 value, which will likely increase the HERS Index

    The rater must enter actual installed conditions into the model; lower insulation R-value increases heat loss and raises the HERS Index.

  5. A marketing team claims a home has a 'HERS Score of 42 — 58% better than average.' Is this statement accurate?

    Answer: Yes, because 42 is 58 points below 100, representing 58% better energy performance than the reference

    A HERS 42 is 58 points below the reference home score of 100, correctly indicating approximately 58% better energy performance than the reference.

  6. Which entity accredits HERS raters and Rating Quality Assurance Providers in the United States?

    Answer: RESNET (Residential Energy Services Network)

    RESNET is the national standards body that accredits HERS raters, training providers, and Quality Assurance Providers in the US.

  7. A home's HERS modeling shows that switching from natural gas heating to an electric heat pump reduces the HERS Index significantly. What is the primary reason?

    Answer: Heat pumps have a COP above 1.0, while gas furnaces are limited to below 100% combustion efficiency

    Heat pumps achieve COPs of 2–4 (200–400% efficiency), far exceeding even the highest-efficiency gas furnaces, dramatically reducing modeled energy use.