Mass Save Insulation & Air Sealing

Mass Save / Eversource & National Grid

Available Weatherization

About This Program

Mass Save provides rebates covering 75% of insulation and air sealing costs for all customers, with 100% coverage for income-eligible households. Includes attic, wall, and basement insulation.

Estimate based on 75% rebate for typical whole-home insulation project

Key Details

  • 75% rebate on insulation costs (100% for income-eligible)
  • Covers attic, wall, and basement insulation
  • Air sealing included in assessment
  • Free home energy assessment required
  • Professional installation by approved contractors

How to Apply

Get free help applying Visit Official Program Page Track this program

(866) 527-7283

A grant-savvy contractor in Cambridge, MA can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.

Deadline: Ongoing

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