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  • Multi-Family High-Rise New Construction Incentives (4 Stories or Higher)

    Builders can receive incentives and rebates from Sponsors of Mass Save® for energy efficiency upgrades to multi-family homes. Let’s get started.

  • 0% Interest Financing | Residential | Mass Save

    Check your eligibility for a 0% interest loan on a new heating system, water heater, central air conditioner, heat pump, or insulation.

  • Windows | Residential | Mass Save

    ENERGY STAR® certified windows can help reduce energy costs, put a stop to cold drafts in the winter, and reduce UV sun damage to floors, carpets, and furniture

  • ConnectedSolutions Thermostats | Residential | Mass Save

    Whether you are a homeowner, renter, or run a small business, you can earn incentives from ConnectedSolutions by using your connected devices to help reduce electric use during periods of high energy demand. Earn a $25 enrollment incentive, and a $20 annual incentive for every thermostat connected to a central air conditioner.

  • How To Use Your Smart Thermostat for Maximum Savings | Massachusetts | Mass Save

    May 4, 2026

    Discover smart thermostat strategies that help you save money, improve comfort, and maximize home efficiency.

  • Frequently Asked Questions | Mass Save

    Frequently asked questions for Mass Save programs and rebates

  • Explore Residential Custom Energy Savings | Get Started | Mass Save

    Whether you're a homeowner, renter, or landlord, find energy savings tailored to you by telling us a little about yourself or the new construction you're trying to complete.

  • Cseko - Farley | Case Studies | Mass Save

    When Julia Cseko’s father decided to relocate from Somerville, Massachusetts, Julia and her husband, Patrick Farley, had the opportunity to purchase his two-family 1920s house from him and turn it into their new family home.

  • Carlisle Kids' House | Case Studies | Mass Save

    Carlisle Kids’ House is a nonprofit childcare center in Carlisle, Massachusetts, serving toddlers through fifth grade students with year-round programming as well as summer camp. When Executive Director Kristin Tully stepped into her role, she assumed responsibility of a building with more than a decade of deferred maintenance and soon turned her attention to identifying opportunities for long‑term energy savings and operational efficiency.

  • Amanda Kingsley | Case Studies | Mass Save

    Amanda Kingsley and her family have lived in their late‑1800s home in Shelburne Falls, Massachusetts, since 2002. Like many older New England houses, the home relied on a patchwork of heating sources over the years, including an aging oil furnace and a pellet stove, which led to uneven temperatures, system noise and ongoing maintenance challenges.