Insulation & Air Sealing

Get 75-100 percent off approved insulation and air sealing improvements. 
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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.

Call 866-527-SAVE (7283)
Choose a Home Performance Contractor
Choose a Direct Weatherization Contractor 
Enter your zip code and heating fuel type to find your path to energy savings. At any time, you can call 866-527-SAVE to speak to the lead vendor that serves your area.
Zip Code
Primary Heating Fuel

Residents in your community qualify for additional offers, including 100% off weatherization upgrades. Learn more about the special offers for designated equity communities here. You can continue scheduling your Home Energy Assessment using one of the paths below.

Schedule a no-cost Home Energy Assessment with trusted lead vendor, {{HLA}}. Call 866-527-SAVE or schedule online.

You can also choose a participating Home Performance Contractor to complete your no-cost Home Energy Assessment. The same contractor can also complete any recommended insulation and air sealing work during a follow-up visit.

If you already know what upgrades you’re looking to make and you are looking to access quick incentives, you may access direct incentives for insulation and/or air sealing upgrades. You can skip the assessment and work with a Direct Weatherization Independent Installation Contractor to scope out your project and access incentives.

For heat pump installations, you can contact a Heat Pump Installer Network Contractor to receive a quote.

Your municipal utility is not part of the Mass Save program. Please contact them directly for energy efficiency program information.

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  • 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.

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