Insulation & Air Sealing

Get 75-100 percent off approved insulation and air sealing improvements. 
Making air sealing and insulation upgrades are two of the most cost-effective ways to boost efficiency and save money.

Insulation and air sealing work hand in hand to save energy, money, and increase your comfort at home. Air sealing is usually the first step—eliminating leakage points in your home, like attics, basements, and between joists.

Benefits of insulation and air sealing improvements include:

  • Lowering heating and cooling costs by up to 15 percent
  • Decreasing drafts to improve comfort and humidity all year long
  • Minimizing outside noise for a quieter, more peaceful environment
  • Reducing the chance of ice dams—protecting your home from potential damage

The Sponsors of Mass Save also offer no-cost insulation and air sealing upgrades to income-eligible residents.

Zip Code
Primary Heating Fuel

No Match Found
  • Customers must live in a 1- to 4-unit home
  • Eligibility for some rebates and incentives is based on findings from the Home Energy Assessment
  • Some restrictions apply, and offers are subject to change or cancellation
  • Financing is subject to approval from a participating lender
  • Other offers are also available for renters of 1- to 4-unit properties, landlords of 1- to 4-unit properties, and landlords of Multi-Family facilities with 5+ units

The Sponsors of Mass Save offer 0% HEAT Loan financing  to make energy efficiency upgrades more affordable to Massachusetts residents. Through this loan, you could qualify for a loan up to $25,000 toward qualified home improvements.