
Cambridge, MA · Middlesex County
Energy Audits & HERS Ratings in Cambridge, MA
BCI Pro Energy measures how your Cambridge home or building really performs, then gives you a clear, prioritized plan.
Why BCI Group
Certified HERS raters serving Cambridge
An energy assessment is also the first step toward Mass Save® incentives for many Cambridge homeowners. We explain the results in plain language and the upgrades with the best payback.
For multifamily buildings, we test and rate units and help owners see where heat is lost between them.
From our base in Westborough, Cambridge is about 28 miles away, close enough for quick estimates and follow-up visits.
- Blower door and duct leakage testing
- Thermal imaging to find hidden leaks
- Energy code compliance for builders
- Prioritized upgrade recommendations

Applications
Testing and ratings for Cambridge homes and builders
From existing homes to new construction, we test and document performance.

Blower door testing
Measures how much air leaks through the building shell.
Thermal imaging
Infrared scans show missing insulation and air leaks.
Before and after testing
Proof that air sealing and insulation made a difference.Local homes
What Cambridge homes need
Cambridge mixes 19th-century workers' cottages, triple-deckers and Victorian single-families with university, lab and multifamily buildings. Tight lots and shared walls make air sealing and sound control as important as R-value.
In Cambridgeport, Mid-Cambridge, North Cambridge and East Cambridge, homes are close together and often split into condos, so insulation work usually needs agreement between owners and careful planning around shared attics and basements. Many buildings still have original balloon framing with open paths from the basement to the attic.
From the inner suburbs to MetroWest, Middlesex County homes range from 19th-century two-families to large newer colonials, each with different weak spots.
Cambridge at a glance
- Region
- Greater Boston
- County
- Middlesex County
- Climate zone
- 5A
- From our Westborough office
- About 28 miles
- Efficiency program
- Mass Save®

Recommended plan
How we would assess a typical two- or three-family home in Cambridge
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.
In older homes, a blower door test shows exactly where air leaks, so upgrades go where they matter most.
Climate, code & rebates
Insulation targets and incentives in Cambridge

Climate & code
Climate zone 5A targets
In climate zone 5A, which includes Cambridge, recommended attic levels are R-49 to R-60, well above what most homes built before the 1980s were given. 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
Mass Save® offers a no-cost assessment and incentives for approved insulation and air sealing, with enhanced incentives for income-eligible households. We confirm what applies to your home before work starts.
About Mass Save® →How it works
From testing to a clear plan in Cambridge
- 01
Plan review
For new homes, we model the design early.
- 02
Inspection
We check insulation and air sealing before drywall.
- 03
Final tests
Blower door and duct leakage tests at completion.
- 04
Rating
You receive the HERS rating and documents.
Pricing
Pricing energy assessments and HERS ratings in Cambridge
We explain the scope and price clearly before any testing begins.
- Re-testing after upgrades
- New construction or existing home
- Mass Save® eligibility
- Pre-drywall inspections
- Number of units

Our work
Energy assessments in action



FAQ
Energy Audits & HERS questions in Cambridge, MA
Can you re-test after insulation work?
Yes. Re-testing shows how much the air sealing and insulation improved the home.
Are your raters certified?
Yes. Our HERS raters are certified and work in-house at BCI Group.
When should a builder call a HERS rater?
At plan review, before construction. Early modeling helps choose cost-effective insulation, windows and systems.
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.
Does a HERS rating help sell a home?
It documents performance, which can help buyers compare homes.
How long does an assessment take?
Most homes take two to three hours on site.
How soon can you start a energy assessment in Cambridge?
Our crews travel about 28 miles from Westborough, MA to Cambridge, and we group estimates and jobs by area. You'll get a start date with your written quote.
Do you also work in towns near Cambridge?
Yes. Besides Cambridge, we serve nearby communities such as Somerville, Boston and Newton, 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
