Special Limited Time Offer on Home Insulation

Eversource, National Grid, Cape Light Compact JPE, Unitil Electric, and Blackstone Gas removed the incentive limit!

Insulation and air sealing decreases your energy use, saves you money, and increases your home comfort year-round, keeping you cooler in the summer and warmer in the winter. For a limited time, you may be eligible to receive higher incentives on approved insulation improvements in addition to having air leaks sealed in drafty areas of your home at no-cost.

Energy Efficiency
Insulation Incentive Example
Blackstone Valley Gas, Cape Light Compact, Eversource,
National Grid, Unitil Electric
75% off insulation *
(Offer is valid through December 31, 2018)
* No limit of project cost
Project Cost Example: $3,500
Incentive: $2,625
Customer Payment: $875
Berkshire Gas, Columbia Gas
of Massachusetts, Liberty,
Unitil Gas
75% off insulation up to $2,000 Project Cost Example: $3,500
Incentive: $2,000
Customer Payment: $1,500


Click here to see if you are eligible for 90-100% off insulation improvements (based on your household income). You may also apply for 0% financing through the Mass Save HEAT Loan on eligible insulation upgrades.

Your Next Steps

Call 1-866-527-SAVE (7283) to schedule a no-cost Home Energy Assessment. Or, choose a participating Home Performance Contractor (HPC) who can complete your Home Energy Assessment, insulation, and air sealing.

  • 1

    During your Assessment, you’ll receive a complete attic-to-basement evaluation of how you’re currently using energy, and a custom home energy report outlining recommended energy efficiency improvements. Plus, energy-saving products like LEDs, advanced power strips, and thermostats will be installed at no cost as needed during the assessment.

  • 2

    If an Energy Specialist completed your Assessment, he/she will be able to coordinate insulation and air sealing services with an Independent Installation Contractor (IIC), or you can select one of our participating IICs on your own by using our Find a Contractor tool.

  • 3

    After work is completed, the program conducts quality assurance inspections for Home Energy Assessments, air sealing, insulation, HEAT Loans, and rebated heating systems. Quality assurance inspections are performed by one of the following trusted vendors:

    • Center for EcoTechnology (CET)
    • CLEAResult
    • CMC Energy Services, Inc.
    • RISE Engineering


*Massachusetts residential customers of Eversource, National Grid, Cape Light Compact JPE, Unitil Electric, and Blackstone Gas may be eligible for 75% off the cost of insulation (with no incentive cap). Massachusetts residential customers of Berkshire Gas, Columbia Gas of Massachusetts, Liberty Utilities, and Unitil Gas may be eligible for 75% off insulation up to $2,000. Customers who meet household income guidelines may instead be eligible for enhanced offers through the Mass Save Income Eligible Program. Customers must live in a 1-4 unit home. Eligibility for some rebates/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 1-4 unit properties, landlords of 1-4 unit properties, and landlords of Multi-Family facilities with 5+ units.