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Home Energy Score: Information for Interested Assessors

Interested in Becoming a Home Energy Score Assessor? Follow these steps


  1. Work with a participating Home Energy Score Partner. To offer the Home Energy Score to homeowners, Assessors work directly with Home Energy Score Partners. Interested Assessors should contact a local Home Energy Score Partner for information about joining their program. If there are no Partners currently operating in your area, interested Assessors could work through a national Partner, like BPI ( and InterNACHI (, or can reach out to organizations (e.g., utilities, state agencies, nonprofits, contractor associations) to find out if they are interested in becoming Home Energy Score Partners. Interested Partners can contact to request additional information and resources for offering the Home Energy Score.
  2. Hold a relevant credential. Individuals interested in becoming Assessors must hold a relevant credential from one of the residential trade organizations listed below. The Home Energy Score program recognizes the following credentials as well as more comprehensive certifications offered by these organizations.  To see a full list of qualifying credentials offered by these organizations, contact them directly.
    Organization Minimum Accepted Credential
    American Society of Home Inspectors (ASHI) ASHI Inspector or Certified Inspector
    Building Performance Institute (BPI) Building Science Principles Certificate of Knowledge
    BuildItGreen Certified Green Building Professional (CGBP) or Green Point Rater (GPR)
    CalCERTS Rater
    California Real Estate Inspection Association (CREIA) Certified Home Inspector
    GreenHome Institute Certified Green Home Professional
    International Association of Certified Home Inspectors (InterNACHI) Home Energy Inspector
    National Association of Home Inspectors (NAHI) Certified Real Estate Inspector
    National Association of the Remodeling Industry (NARI) Green Certified Professional, Certified Remodeler, or Master Certified Remodeler
    North American Technician Excellence (NATE) Air Conditioning/Heat Pumps, Gas/Oil Heating, or Gas/Oil Hydronics
    Residential Energy Services Network (RESNET) HERS Rater

    *Minimum credential is not required if the interested Assessor already holds a higher level certification from one of the credentialing organizations listed.

  3. Pass a free, online test. Interested Assessors with the necessary credentials must also pass a two-part test in order to access the Home Energy Scoring Tool. The test includes practical and written portions. The practical exam takes place in the Home Energy Score Simulation Training (the Sim), a 3-D simulation environment. Once they have passed the test and are qualified to score homes, new Assessors must be accompanied by a “mentor” (a highly experienced professional) during their first home walk through.


Home Energy Score Simulation Training and Test (the Sim)

The Sim models the data collection process in several sample homes. Before taking the test, candidates have access to training tools including practice houses in the Sim. Candidate Assessors must score an 80 or better on three “Challenge/Practice” homes and a 90 or better on two test homes. Candidates must score an 80 or better on the written portion of the exam which consists of 20 questions covering the Home Energy Score program.

A video demonstrating the Sim is available from Interplay Learning, the technology company that developed the Sim for DOE.

Recent Changes to Assessor Requirements

The Assessor qualification requirements listed below reflect the latest updates to the Home Energy Score testing and credential requirements, announced in February 2015. Findings from research, analysis, and pilot testing conducted with Assessor candidates across the nation support the new qualifications for Assessors. A summary of the requirements are outlined in the chart below.

  Qualification Requirements
Credentialing Prerequisites Current credentials recognized by leading building-related industry organizations (e.g. ASHI, BPI, InterNACHI, NARI, NATE, RESNET and others)
Practical Test Candidate uses the Home Energy Score 3-D simulation tool to retrieve home characteristics data and to score
- Three “Practice/Challenge” Homes (80 or better)
- Two Test Homes (90 or better)
Written Exam Score of 80 or better on multiple choice test comprised of 20 questions covering the Home Energy Score program only
Quality Assurance 5% of homes must be rescored under a DOE approved quality assurance plan
Mentoring First home scored with a mentor; counts toward quality assurance requirement


Existing Assessors who have qualified within the last four months or have kept their status active by scoring houses within the last four months will not need to requalify.  Those who have not stayed active will need to work through their Partner to take a brief online Assessor refresher course and test.


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