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  • Path 3: High Performance Buildings

    High performance buildings provides building owners and design teams with energy efficiency and low carbon equipment throughout the construction or renovation process.

  • Mass Save | Business Electrification

    The Sponsors of Mass Save offer nationally recognized energy efficiency programs to help make high efficiency electric technologies more attainable and make it easier for organizations to reach their sustainability goals.

  • Mass Save | Water Source Heat Pumps

    A water source heat pump uses the same concept as an air source heat pump for drawing out heat from the outdoor air.

  • Mass Save | 2023 Air Source Heat Pump Minimum Efficiency Requirements

    The Department of Energy has developed a new procedure for testing heat pump efficiency called the M1 testing method. This testing method was designed to better reflect current field conditions and provide more accurate efficiency ratings.

  • Small Business Assessments | Business | Mass Save

    Get no-cost professional guidance to identify the biggest energy-saving opportunities for your business.

  • Water Heating | Residential | Mass Save

    Water heating is often a home’s second-highest energy cost. There are a wide variety of high-efficiency water heating systems on the market that help residents save on energy costs and improve the comfort of their homes.

  • Mass Save | Building & HVAC Controls

    Technologies and controls-based solutions can improve building and HVAC performance and, lead to long-term savings, and greenhouse gas reduction.

  • HEAT Loan Program for Lenders

    The Mass Save HEAT Loan program is designed to help customers finance residential energy efficiency and decarbonization projects at 0% interest. As a participating lender, you play an important role in helping customers access affordable loans that enable them to make improvements and upgrades to their homes. Join us in promoting a greener future while expanding your lending portfolio.

  • Mass Save | Thermostats

    With smart thermostats, your business can save money, energy, and time by monitoring and controlling heating and cooling needs during any season.

  • Mass Save | Cold Storage & Lab Grade Equipment

    The Sponsors of Mass Save offer rebates on ENERGY STAR® certified cold storage products. For participating commercial customers, this means more affordable, energy- efficient models and savings on operating costs.