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  • Heating and Cooling Glossary

    Expand your knowledge with this glossary of heating and cooling equipment and installation terms.

  • 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.

  • Business Mass Save Blog

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  • Shopping Spree Savings: Your Guide to Mass Save Deals

    May 4, 2018

    Between the numerous styles and sizes of products to choose from, combined with potentially high price tags, it’s easy to grow confused about which bulb, fixture, or appliance is best for your home.

  • Mass Save Data

    Collectively, the energy efficiency investments of these homes and businesses have helped make Massachusetts a top-ranked state for energy efficiency. Mass Save Data, provides detailed data and information on the year-to-date performance of energy efficiency in Massachusetts, including total energy savings, budgetary investments and benefits.

  • Find a Contractor

    We can help connect you with skilled energy efficiency professionals.

  • Mass Save | Steam Traps & Surveys

    Steam traps are automatic valves releasing condensed steam while preventing the loss of live steam. Maintaining a regular schedule of steam trap repair and replacement allows steam to flow at a controlled or adjusted rate for optimal energy efficiency.

  • Mass Save | Building Management Systems & Controls

    Building Management Systems (BMS) are computer-based systems installed to manage and monitor building equipment like air handlers, boilers, chillers, and more. They can automatically turn off systems and equipment when not in use—reducing energy loads and extending equipment and systems’ operational life.

  • Mass Save | Building Management Systems & Controls

    Building Management Systems (BMS) are computer-based systems installed to manage and monitor building equipment like air handlers, boilers, chillers, and more. They can automatically turn off systems and equipment when not in use—reducing energy loads and extending equipment and systems’ operational life.