Mass Save Insulation & Air Sealing Rebates

Mass Save (Unitil, National Grid)

Available Weatherization

About This Program

Mass Save covers 75% of insulation and air sealing costs (100% for income-eligible customers) following a free home energy assessment. Eligible work includes attic, wall, and basement insulation plus air sealing to reduce heating and cooling costs.

Rebate covers 75% of quoted cost, or 100% if income-qualified

Key Details

  • Covers 75-100% of insulation and air sealing costs
  • Free home energy assessment required first
  • Attic, wall, and basement insulation eligible
  • 100% coverage for income-eligible customers
  • Reduces heating and cooling bills

How to Apply

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

Deadline: Year-round availability

Need a Contractor for This Grant?

Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.

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