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As the demand for energy-efficient homes rises, so does the need for professionals who can assess a home’s energy efficiency and environmental impact. HERS (Home Energy Rater Certification) raters are certified experts who evaluate homes to determine energy use and potential improvements. This guide covers everything you need to know about the HERS Certification, including the benefits of becoming a certified rater, the steps to certification, training programs, and career prospects.
HERS Practice Test Questions
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HERS Blower Door & Air Infiltration
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Start FREE TestKey Takeaways
Free HERS Practice Test Online
- HERS Certification: This certification enables professionals to evaluate and rate homes based on their energy efficiency.
- Training and Certification Requirements: Becoming a HERS rater involves both classroom and field training, followed by written and practical exams.
- Career Opportunities: Certified HERS raters can work in various industries, including construction, real estate, and energy consulting.
- Testing Components: The HERS test includes a range of assessments, from air leakage to duct efficiency, providing a comprehensive energy efficiency profile of a home.
- Increased Demand: With a rise in eco-conscious building and retrofitting, certified HERS raters are more in demand than ever.

What is HERS?
HERS, or the Home Energy Rating System, is a nationally recognized system for assessing a home's energy efficiency. The HERS Index is a scoring system for homes, with a lower score indicating a more energy-efficient home. HERS raters use specialized equipment and techniques to evaluate various aspects of a home's energy use, such as insulation, air leakage, and heating and cooling efficiency. The results are used to produce a HERS report, which can be helpful for homeowners, builders, and real estate agents looking to understand a property’s energy efficiency.
Key Points About HERS:
- National Standard: HERS is the national standard in the U.S. for measuring a home’s energy efficiency.
- Scoring System: Homes are rated on a scale, where 100 represents the energy use of a standard home, and 0 represents a net-zero energy home.
- Importance in Real Estate: A home’s HERS score can significantly impact its market value and appeal to eco-conscious buyers.
The HERS rating system helps homeowners understand where energy is being wasted, guiding improvements that can lead to lower utility bills and a reduced carbon footprint.
How to Become a Certified Home Energy Rater
The process to become a Certified HERS Rater involves specific training and passing certification exams. Becoming certified not only enhances your qualifications but also opens up various job opportunities in energy auditing, green building, and sustainable development.
Steps to Certification:
- Enroll in a HERS Training Program: To start, you must enroll in an approved HERS training course. Training covers both theoretical knowledge and practical field experience in areas like blower door testing, thermal imaging, and energy modeling.
- Complete Required Field Training: Field training is a crucial component of HERS certification, allowing you to practice real-world applications of energy rating techniques under expert supervision.
- Pass the Written and Practical Exams: After completing training, you must pass both a written test and a practical field test to demonstrate your knowledge and skills.
- Register with a RESNET-accredited Provider: The Residential Energy Services Network (RESNET) is the governing body for HERS certification. After passing the exams, you must register with a RESNET provider to begin working as a certified HERS rater.
Certification ensures you meet the industry standards set by RESNET, increasing your credibility and job prospects in the field of energy auditing.
What is a HERS Test?
A HERS test is a comprehensive assessment of a home’s energy efficiency. Certified HERS raters conduct this test to determine the energy performance of a building. The test includes several steps that examine the insulation, air leakage, HVAC efficiency, and other factors that contribute to energy use.
Key Components of a HERS Test:
- Blower Door Test: This test measures a home’s air leakage rate by using a powerful fan to create a pressure difference, allowing the rater to identify gaps and leaks.
- Duct Leakage Testing: Duct systems are tested for leaks, as inefficient ductwork can lead to significant energy losses.
- Thermal Imaging: Thermal cameras help detect insulation gaps and cold or hot spots in the home’s structure.
- Energy Modeling Software: Specialized software is used to analyze test results and generate a HERS score.
The HERS test results provide a detailed breakdown of a home’s energy use and help homeowners identify areas for improvement to reduce their energy costs.

HERS Rater Near Me
With the growing emphasis on energy-efficient homes, HERS raters are in high demand. Many organizations, such as RESNET, offer tools to help homeowners and contractors locate certified HERS raters nearby.
Finding a Certified HERS Rater:
- RESNET Directory: RESNET’s official website has a directory that allows users to search for certified HERS raters by location.
- Local Energy Efficiency Organizations: Some state and local energy offices maintain a list of certified professionals for energy auditing and HERS rating.
- Homebuilder and Real Estate Networks: Some homebuilders and real estate agencies work with certified HERS raters to offer energy assessments as part of their services.
Working with a local HERS rater can provide homeowners with timely and accurate information about their home’s energy performance, helping them make informed decisions about energy improvements.

Conclusion
The HERS certification is essential for professionals interested in energy auditing and green building. As energy efficiency becomes increasingly prioritized, certified HERS raters play a key role in helping homeowners and builders make informed choices that reduce energy use and environmental impact. Certification through RESNET-approved programs provides the skills and credentials needed to excel in this growing field, offering valuable career opportunities for those passionate about sustainable living.
(HERS) Home Energy Rater Certification Questions and Answers
About the Author
Professional Engineer & Energy Certification Specialist
Georgia Institute of TechnologyDr. Steven Park is a licensed Professional Engineer and Certified Energy Manager with a PhD in Energy Engineering from Georgia Tech. He has 16 years of experience in power systems, utility management, and renewable energy project development. Dr. Park coaches engineers and technicians preparing for the PE exam, CEM certification, and electrical utility licensing tests.