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 HVAC & HERS

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HERS Rating FAQ

Everything You Need to Know About HERS Ratings

If you're planning a home addition, renovation, or energy upgrade in Massachusetts, you may have questions about HERS ratings, compliance requirements, and rebate eligibility. Below, we answer the most common questions to help you navigate the process.

1. Do I need a HERS rating for a home addition in Massachusetts?

Yes, you may need a HERS rating if:

  • Your home addition is over 1,000 sq. ft. and requires a building permit.

  • You are building in a Stretch Energy Code municipality that enforces stricter efficiency requirements.

  • Your project includes energy-related upgrades, such as new insulation, windows, HVAC systems, or air sealing.


Tip: Check with your local building department to confirm requirements before starting your project. Learn more

2. How does a HERS rating affect my eligibility for Mass Save rebates?

A HERS rating is often required to qualify for Mass Save incentives on:

  • High-efficiency HVAC systems (heat pumps, ductless mini-splits, boilers).

  • Insulation and air sealing improvements.

  • ENERGY STAR-certified windows and doors.

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Pro Tip: A lower HERS score means higher energy efficiency, which may make you eligible for greater rebate amounts. Learn more about the HERS Index

3. What is an R&A HERS assessment?

A Renovation & Addition (R&A) HERS assessment evaluates the energy efficiency of your remodeled or expanded home. This includes:

  • Blower door testing for air leakage

  • Duct leakage testing (if applicable)

  • Insulation and HVAC efficiency assessment

  • Thermal imaging scans (for heat loss detection)

  • Energy modeling to calculate your HERS score

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Why it matters: The final report helps ensure your home meets state energy codes and qualifies for efficiency programs.

4. What happens if my home fails the HERS rating requirement?

If your project does not meet the required HERS score, don’t worry! We provide:

  • Guidance on energy upgrades to improve compliance.

  • Re-testing services after improvements are made.

  • Coordination with builders and contractors to meet code requirements.

5. How long does a HERS rating assessment take?

The on-site evaluation usually takes 2-4 hours, depending on the home size and complexity. The full report is typically delivered within 2-3 business days.

6. How much does a HERS rating cost for a home addition or remodel?

HERS rating costs vary based on the size of your addition, complexity, and testing requirements.

 

Get a Quote: Contact us today for pricing and scheduling.

7. Does every Massachusetts town require a HERS rating for additions & remodels?

Not all towns require it, but many in Massachusetts, especially those following the Stretch Energy Code, do. Some of the most common areas requiring HERS ratings include:

 

Boston, Cambridge, Newton, Lexington, Brookline, Arlington, Somerville, and more.

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Tip: Always check with your town's building department before starting a project!

8. What’s the difference between a HERS rating and a blower door test?

A HERS rating is a full energy efficiency assessment, while a blower door test specifically measures how airtight a home is. Blower door tests are included in HERS assessments but can also be performed separately if required.

 

Massachusetts Energy Code often requires blower door testing for new constructions, additions, and major renovations.

9. What other services do you offer besides HERS ratings?

At Victoria Services Inc., we specialize in:

 

Need an assessment? Schedule a HERS Rating Today!

10. How do I schedule a HERS rating in Massachusetts?

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