
Marlborough, MA · Middlesex County
Energy Audits & HERS Ratings in Marlborough, MA
BCI Pro Energy measures how your Marlborough home or building really performs, then gives you a clear, prioritized plan.
Local experts
Measure before you insulate in Marlborough
For builders, a HERS rating is often how a new home shows it meets the Massachusetts energy code, especially in Stretch and Specialized code towns. Our raters work with you from plan review through final testing in Marlborough.
For multifamily buildings, we test and rate units and help owners see where heat is lost between them.
Marlborough is minutes from our Westborough, MA headquarters, so estimates and follow-up visits are easy to schedule.
- Thermal imaging to find hidden leaks
- Testing before and after upgrades
- Plain-language written reports
- Blower door and duct leakage testing

Applications
How BCI Pro Energy helps Marlborough properties
Every service starts with measuring, so recommendations are based on data, not guesses.

Blower door testing
Measures how much air leaks through the building shell.
Home energy assessments
A whole-home review with a prioritized upgrade plan.
Duct leakage testing
Measures leaks in heating and cooling ducts.Local homes
Know your Marlborough home
Marlborough has older homes near downtown, many post-war capes, ranches and colonials, and newer subdivisions and multifamily buildings near Route 20 and I-495.
Marlborough sits where I-495 meets Route 20 and Route 85, and its homes include older houses near downtown and many post-war capes and ranches across the city. Homes on higher ground toward Fort Meadow and Lake Williams get more wind exposure in winter.
From the inner suburbs to MetroWest, Middlesex County homes range from 19th-century two-families to large newer colonials, each with different weak spots.
Marlborough at a glance
- Region
- MetroWest
- County
- Middlesex County
- Climate zone
- 5A
- From our Westborough office
- Under 15 miles
- Efficiency program
- Mass Save®

Recommended plan
An energy assessment plan for Marlborough two- and three-family homes
Test each unit
Blower door tests show which units leak the most.
Scan the shell
Thermal imaging finds leaks between units and at the roof.
Prioritize upgrades
We rank upgrades by cost and impact.
Re-test
Testing after the work confirms the results.
For new homes, HERS ratings and blower door tests are part of meeting the Massachusetts energy code.
Climate, code & rebates
Insulation targets and incentives in Marlborough

Climate & code
Climate zone 5A targets
In climate zone 5A, which includes Marlborough, recommended attic levels are R-49 to R-60, well above what most homes built before the 1980s were given. New construction and major renovations in Massachusetts follow the state energy code, and many towns have adopted the stricter Stretch or Specialized codes.

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 Marlborough
- 01
Walkthrough
We look at the home and listen to your concerns.
- 02
Measure
Testing shows how the home performs.
- 03
Explain
We go over the results in plain language.
- 04
Recommend
You get upgrades ranked by payback.
Pricing
How we price energy services in Marlborough
Every home and project is different, so we quote after learning about it. Some assessments may be offered at no cost through Mass Save®.
- Pre-drywall inspections
- Number of units
- Mass Save® eligibility
- Re-testing after upgrades
- New construction or existing home

Our work
Our energy services near Marlborough



FAQ
Energy Audits & HERS questions in Marlborough, MA
Do I need to prepare?
Clear access to the attic, basement and heating system and close windows before the test.
Can you re-test after insulation work?
Yes. Re-testing shows how much the air sealing and insulation improved the home.
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.
When should a builder call a HERS rater?
At plan review, before construction. Early modeling helps choose cost-effective insulation, windows and systems.
What does thermal imaging show?
Temperature differences that reveal missing insulation, air leaks and sometimes moisture.
Do you test multifamily buildings?
Yes. We test and rate single-family and multifamily projects.
How soon can you start a energy assessment in Marlborough?
Marlborough 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 Marlborough?
Yes. Besides Marlborough, we serve nearby communities such as Hudson, Southborough and Northborough, 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
