
Waltham, MA · Middlesex County
Mass Save® Insulation in Waltham, MA
Homes, churches and nonprofits in Waltham can receive Mass Save® energy upgrades, with up to 100% of eligible costs covered for qualifying projects.
Built for Waltham
Mass Save® insulation for Waltham homes
Churches and nonprofits in Waltham often have the most to gain: large buildings, long heating seasons and tight budgets. Eligible organizations can receive insulation and air sealing with little to no out-of-pocket cost.
Buildings with two to four units can usually go through the residential program, and both owners and tenants benefit.
Our crews travel roughly 22 miles from Westborough, MA to Waltham, and we group estimates and jobs by area to keep scheduling simple.
- Paperwork handled for you
- Licensed, insured crews
- 0% HEAT Loan for qualifying upgrades
- Incentives for approved insulation

Applications
Where Mass Save® helps Waltham homeowners most
Approved work depends on your assessment, and these are the most common items.

Air sealing
Sealing bypasses, top plates and penetrations that leak heat.
Attic insulation
Bringing attics up to recommended levels after air sealing.
Heat pump planning
Insulation first, then heat pump options and rebates.Local homes
Know your Waltham home
Waltham has many two-family homes and older single-families near Moody Street and the Charles River, plus mid-century neighborhoods and newer apartment and lab buildings.
Waltham grew along the Charles River around the Boston Manufacturing Company and the Waltham Watch factory, and neighborhoods such as the South Side, Banks Square, the Highlands and Warrendale reflect that history with many two-families and older single-family homes.
From the inner suburbs to MetroWest, Middlesex County homes range from 19th-century two-families to large newer colonials, each with different weak spots.
Waltham at a glance
- Region
- Greater Boston
- County
- Middlesex County
- Climate zone
- 5A
- From our Westborough office
- About 22 miles
- Efficiency program
- Mass Save®

Recommended plan
How Mass Save® works for a typical two- or three-family home in Waltham
Book the assessment
We help you schedule the no-cost assessment for the building.
Coordinate owners
Each unit's owner or tenant is included in the plan.
Seal and insulate
Attic, walls and rim joists are done as approved.
Close the paperwork
We complete the program steps for the building.
Even newer homes can have thin attics or leaky rim joists that the program helps fix.
Climate, code & rebates
Insulation targets and incentives in Waltham

Climate & code
Climate zone 5A targets
Waltham is in IECC climate zone 5A. For attics in zones 5 and 6, ENERGY STAR recommends R-49 to R-60, and many existing homes here have far less. 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
From assessment to insulation in Waltham
- 01
Check eligibility
We confirm your utility participates.
- 02
Assess
The assessment finds the best upgrades.
- 03
Upgrade
Insulation and air sealing are installed.
- 04
Enjoy the savings
Lower bills and a more comfortable home.
Pricing
Mass Save® incentives and costs in Waltham
Many homeowners pay only a small share of approved insulation, and income-eligible households can receive more.
- Your utility and eligibility
- Air sealing included
- Income-eligible incentive levels
- Work outside the program
- Approved scope of work

Our work
Mass Save® upgrades in action



FAQ
Mass Save® questions in Waltham, MA
Why apply now?
Mass Save® incentives are allocated each program cycle, so applying early helps secure your spot.
What if my home has knob-and-tube wiring?
Active knob-and-tube wiring must be addressed before insulating. We explain the options.
Can renters take part?
Often, yes, with the property owner's approval.
Do two- to four-unit buildings qualify?
Many do. The program has options for small multifamily buildings.
Do you work outside the program?
Yes. We also insulate homes that are not using Mass Save®.
How much does Mass Save® pay for insulation?
Incentives are set by the program and can change. They can cover a large share of approved work, with more for income-eligible households.
How soon can you start a Mass Save® project in Waltham?
Our crews travel about 22 miles from Westborough, MA to Waltham, 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 Waltham?
Yes. Besides Waltham, we serve nearby communities such as Newton, Wellesley and Cambridge, 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
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MA · NH · RI · CT · ME
