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• HVAC Controls for Building Energy Management

  This is the sixth session in our HVAC Energy Efficiency Basics webinar series. Some of the sessions will build on each other, but you may choose to participate in any or all of them.

• Choosing the Right Commercial Compliance Path: Documentation and Tools

  This is a two hour webinar covering Commercial Documentation and Tools.

• Session 2: Introduction to Building Envelope Assessment & Weatherization (Westborough)

  Intro training on building envelope and how to improve efficiency and comfort through weatherization of commercial/institutional facilities.

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  How heat pump water heaters improve efficiency in commercial buildings | Massachusetts | Mass Save

  July 23, 2026

  Heat pump water heaters offer for commercial buildings. Learn how they work, key benefits, and available rebates.

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  The Benefits of Switching to a Heat Pump Water Heater | Mass Save

  February 4, 2026

  Upgrade to a heat pump water heater for enhanced efficiency and savings. Discover how to make the switch and improve your home's energy use.

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  What is a Heat Pump and When Should You Make the Switch? | Massachusetts | Mass Save

  December 17, 2025

  Learn what a heat pump is and when you should consider switching to it. Find out about ways you can save energy with heat pumps while using rebates

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  Mini-Splits vs. Central AC: Which Cooling System Is Right for Your Home? | Massachusetts | Mass Save

  May 18, 2026

  Compare mini-splits vs. central AC, including costs, efficiency, and Mass Save rebates, to find the best cooling system for your home.

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  Practical Energy-Saving Tips for Renters: How to Save Money and Boost Comfort | Massachusetts | Mass Save

  May 18, 2026

  Discover practical energy-saving tips for renters to save money, stay comfortable year-round, and make your home more eco-friendly.

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  Fall Energy Efficiency Checklist: Simple Tips to Save  | Massachusetts | Mass Save

  November 14, 2025

  Prepare for cooler temps with our fall energy efficiency checklist. Learn easy tips to save energy and money this season.

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  Hassan Apartments | Case Studies | Mass Save

  Hassan Apartments is a 50-year-old public housing community for seniors and adults with disabilities in the Hyde Park neighborhood of Boston, Massachusetts. The building is owned and managed by the Boston Housing Authority (BHA), which partnered with Eversource, a Mass Save® Sponsor, to modernize the heating and cooling systems in all 100 units.