
Sudbury, MA · Middlesex County
Energy Audits & HERS Ratings in Sudbury, MA
HERS ratings and energy code testing for builders across Middlesex County, plus energy assessments for existing homes in Sudbury.
Middlesex County
Measure before you insulate in Sudbury
BCI Pro Energy is the energy services side of BCI Group. Because our raters work alongside our insulation crews, we can test, recommend, install and re-test without handing you off to someone else.
In older homes, a blower door test shows exactly where air leaks, so upgrades go where they matter most.
Because Sudbury is close to our Westborough office, we can usually see your property within days.
- Help with Mass Save® steps
- Thermal imaging to find hidden leaks
- Prioritized upgrade recommendations
- Certified HERS raters in-house

Applications
Energy services we provide in Sudbury
Every service starts with measuring, so recommendations are based on data, not guesses.

Thermal imaging
Infrared scans show missing insulation and air leaks.
Home energy assessments
A whole-home review with a prioritized upgrade plan.
Blower door testing
Measures how much air leaks through the building shell.Local homes
What Sudbury homes need
Sudbury is mostly larger single-family homes, many colonials and contemporaries built from the 1950s through the 1990s, plus historic homes near Sudbury Center.
Sudbury is a largely residential town along the Sudbury River, with historic homes around Sudbury Center and many larger colonials and contemporaries built from the 1950s on. Big homes with cathedral ceilings, skylights and finished attics often have hidden air leaks we find with blower door testing.
Middlesex County is the most populous county in New England, with dense older cities near Boston and larger single-family suburbs further west.
Sudbury at a glance
- Region
- MetroWest
- County
- Middlesex County
- Climate zone
- 5A
- From our Westborough office
- Under 15 miles
- Efficiency program
- Mass Save®

Recommended plan
How we would assess a typical older home in Sudbury
Measure leakage
A blower door test sets the baseline.
Find the bypasses
Thermal imaging shows the hidden paths in old framing.
Check safety
We look at combustion safety and ventilation.
Plan the work
You get a prioritized, written plan.
Climate, code & rebates
Insulation targets and incentives in Sudbury

Climate & code
Climate zone 5A targets
Homes in Sudbury sit in climate zone 5A, where ENERGY STAR suggests R-49 to R-60 in the attic. Settled or missing insulation is common in older buildings. Many Massachusetts towns have adopted the Stretch Energy Code or the Specialized Opt-in Code, which raise insulation and air-sealing requirements for new construction and major renovations.

Incentives
Mass Save® in Massachusetts
Massachusetts homeowners can start with a no-cost Mass Save® Home Energy Assessment, which can lead to incentives for insulation and air sealing. As a Mass Save® partner, BCI Group helps you through the program steps.
About Mass Save® →How it works
How an energy assessment works in Sudbury
- 01
Book the visit
We schedule a time that suits you or your build schedule.
- 02
Test
Blower door, thermal imaging and other tests as needed.
- 03
Report
You get a written report with clear priorities.
- 04
Next steps
We help with upgrades, incentives and re-testing.
Pricing
Pricing energy assessments and HERS ratings in Sudbury
The size of the home, the tests needed and whether it is new construction drive the price.
- Size and type of the home
- Number of units
- Tests needed
- Plan review and modeling
- New construction or existing home

Our work
Energy assessments in action



FAQ
Energy Audits & HERS questions in Sudbury, MA
How long does an assessment take?
Most homes take two to three hours on site.
Is a home energy assessment free?
Eligible Massachusetts customers can get a no-cost Mass Save® Home Energy Assessment. Other testing is quoted by project.
What is duct leakage testing?
A test that measures air leaking from heating and cooling ducts, often required for new homes.
What does thermal imaging show?
Temperature differences that reveal missing insulation, air leaks and sometimes moisture.
Does a HERS rating help sell a home?
It documents performance, which can help buyers compare homes.
When should a builder call a HERS rater?
At plan review, before construction. Early modeling helps choose cost-effective insulation, windows and systems.
How soon can you start a energy assessment in Sudbury?
Sudbury is close to our Westborough, MA office, so estimates are usually easy to schedule. You'll get a start date with your written quote.
Do you also work in towns near Sudbury?
Yes. Besides Sudbury, we serve nearby communities such as Framingham, Marlborough and Southborough, along with the rest of Middlesex County.
Nearby
More from BCI Group in Middlesex County and beyond
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10+ Years
Serving New England
HERS Certified
In-house ratings
Mass Save®
Rebates handled
5 States
MA · NH · RI · CT · ME
