
Natick, MA · Middlesex County
Energy Audits & HERS Ratings in Natick, MA
Home energy assessments, blower door testing and HERS ratings in Natick from BCI Pro Energy's certified raters.
Middlesex County
Know exactly where your Natick home loses energy
Guessing where a home loses energy wastes money. A blower door test measures how leaky the building is, and thermal imaging shows where the leaks are, so every dollar you spend on upgrades in Natick goes where it counts.
In older homes, a blower door test shows exactly where air leaks, so upgrades go where they matter most.
From our base in Westborough, Natick is about 15 miles away, close enough for quick estimates and follow-up visits.
- Testing before and after upgrades
- Prioritized upgrade recommendations
- Energy code compliance for builders
- Help with Mass Save® steps

Applications
Testing and ratings for Natick homes and builders
Every service starts with measuring, so recommendations are based on data, not guesses.

Before and after testing
Proof that air sealing and insulation made a difference.
Blower door testing
Measures how much air leaks through the building shell.
Home energy assessments
A whole-home review with a prioritized upgrade plan.Local homes
What Natick homes need
Natick's housing includes Victorian and colonial homes near Natick Center and South Natick, many mid-century capes and ranches, and newer condos near Route 9.
Natick runs from Natick Center and South Natick along the Charles River to the neighborhoods around Lake Cochituate and West Natick. Older colonials and Victorians near the center and post-war capes and ranches across town often have little or no wall insulation.
Middlesex County's older cities have many homes with balloon framing and empty walls, while its suburbs have large attics and bonus rooms that leak air.
Natick at a glance
- Region
- MetroWest
- County
- Middlesex County
- Climate zone
- 5A
- From our Westborough office
- About 15 miles
- Efficiency program
- Mass Save®

Recommended plan
How we would assess a typical older home in Natick
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.
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 Natick

Climate & code
Climate zone 5A targets
In climate zone 5A, which includes Natick, 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
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
Your assessment or HERS rating, step by step
- 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 Natick
HERS ratings are priced by project, and we can bundle plan review, inspections and testing.
- New construction or existing home
- Mass Save® eligibility
- Pre-drywall inspections
- Tests needed
- Number of units

Our work
Testing and ratings like the ones we do in Natick



FAQ
Energy Audits & HERS questions in Natick, MA
What does thermal imaging show?
Temperature differences that reveal missing insulation, air leaks and sometimes moisture.
What is duct leakage testing?
A test that measures air leaking from heating and cooling ducts, often required for new homes.
Do you test multifamily buildings?
Yes. We test and rate single-family and multifamily projects.
How long does an assessment take?
Most homes take two to three hours on site.
When should a builder call a HERS rater?
At plan review, before construction. Early modeling helps choose cost-effective insulation, windows and systems.
Are your raters certified?
Yes. Our HERS raters are certified and work in-house at BCI Group.
How soon can you start a energy assessment in Natick?
Our crews travel about 15 miles from Westborough, MA to Natick, 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 Natick?
Yes. Besides Natick, we serve nearby communities such as Wellesley, Framingham and Ashland, 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
