Practice Test Geeks(HERS) Home Energy Rater Certification Practice Test
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Energy Modeling & Rating Systems 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 & Rating Systems flashcards as text

  1. In REM/Rate software, what does the 'reference home' represent?

    Answer: A standardized code-minimum home used as a baseline for HERS scoring

    The reference home is a code-minimum home built to IECC specifications that serves as the 100-point baseline for HERS Index calculations.

  2. Which of the following inputs has the GREATEST impact on reducing a home's HERS score through envelope improvements?

    Answer: Air leakage rate (ACH50)

    Air leakage (ACH50) typically has the greatest single impact on HERS scores because infiltration losses account for a large portion of a home's energy load.

  3. What is the standard test pressure used for blower door testing when collecting data for HERS ratings?

    Answer: 50 Pascals

    HERS ratings use 50 Pascals (Pa) as the standard test pressure for blower door tests to measure envelope airtightness.

  4. A home is modeled with a gas furnace AFUE of 80% but the installed unit is 96% AFUE. How should the rater handle this?

    Answer: Update the model to reflect the 96% installed equipment

    The energy model must reflect actual installed conditions; the rater must update equipment inputs to match what is installed in the home.

  5. When modeling a home with a conditioned crawl space in energy software, how should the crawl space be treated?

    Answer: As part of the conditioned volume with insulated walls

    A conditioned crawl space is treated as part of the conditioned volume, with insulation on the crawl space walls rather than the floor above.

  6. What does the Benchmark HERS Index score of 100 specifically represent?

    Answer: A home built to the 2006 IECC energy code

    A HERS Index of 100 represents the energy performance of a home built to the 2006 IECC, which is the RESNET reference standard.

  7. In energy modeling, what is 'internal gains' referring to?

    Answer: Heat generated by occupants, appliances, and lighting inside the home

    Internal gains are heat sources within the conditioned space from occupants, lighting, and appliances that reduce heating loads but add to cooling loads.