No-Cost Insulation Massachusetts — Mass Save Program

Insulation in Massachusetts — Find Out What You May Qualify For Through Mass Save

Many Massachusetts homeowners in Boston, Worcester, Springfield, and beyond may qualify for covered attic and wall insulation, plus eligible basement and crawlspace measures based on home conditions and program rules.

Check If You Qualify

Insulation Types We Install Across Massachusetts

Attic Insulation

Up to 100% covered

The #1 source of heat loss in Massachusetts homes. Blown-in cellulose or fiberglass to R-60.

Wall Insulation

Up to 100% covered

Dense-pack insulation injected into exterior walls without removing drywall.

Basement & Crawlspace Measures

Eligibility varies

Basement and crawlspace measures are evaluated separately during the assessment and depend on program rules and site conditions.

Rim Joist Sealing

Up to 100% covered

Spray foam sealing at the rim joist — one of the biggest hidden energy leaks.

Asbestos & Knob-and-Tube? We Handle It.

Many older homes in Boston, Cambridge, Lowell, and Lynn have asbestos in old insulation or knob & tube wiring. Our team coordinates required remediation steps and eligible insulation work clearly, so program-covered measures stay separate from non-program services.

Asbestos RemediationKnob & Tube RemovalIce Dam PreventionMoisture Control

No-Cost Air Sealing — Mass Save Program

Where Your Massachusetts Home Leaks Air

A certified assessment identifies eligible air leakage points and recommends Mass Save measures that may apply to your home.

At eligible air leakage points identified during assessment

Electrical outlets and switch plates

Attic hatches and pull-down stairs

Plumbing and wiring penetrations

Recessed lighting fixtures

Basement rim joists

Chimney and flue gaps

Dryer vents and exhaust fans

What You Get — At No Cost Through Mass Save

Professional blower door test to find every leak

Sealing eligible gaps and penetrations identified by the assessment

Foam sealing around qualifying pipes, wires, and ducts

Eligible attic air sealing measures where program rules apply

Improved indoor air quality and comfort

Lower heating and cooling bills immediately

Your Home Could Be Losing Heat Through Insulation Gaps

Find out if you qualify for no-cost insulation through Mass Save. Homeowners in Boston, Worcester, Quincy, and across MA are already saving.

Schedule No-Cost Assessment (978) 250-0230