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• National Grid Energy Solutions Summit

  This 1-day summit and expo is a must attend event for National Grid Customers and Vendor Partners. The theme is decarbonization in Massachusetts.

• R5.0 Residential Municipal Opt-In Specialized Energy Code

  This is a one hour webinar providing an overview of the residential municipal opt-in code.

• C5.2 Commercial Existing Buildings Part 2 Additions

  This is a one hour webinar covering additions to commercial existing buildings.

• Residential Existing Buildings Part 3: Alterations

  This is one hour webinar covering the Residential Existing Buildings.

• MA - R6.0 The Massachusetts Stretch Energy Code for HERS Raters

  Updated for the new Stretch Energy Code.

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  Seal in Your Savings: Why Insulation and Air Sealing Matters for the Heating Season | Massachusetts | Mass Save

  November 14, 2025

  Now’s the time to insulate. See how improving your home’s insulation and air sealing boosts comfort, reduces energy use, and helps you save for the heating season.

• Heating & Cooling | Mass Save

  Make your home more comfortable and energy efficient by upgrading to a new heating and cooling system.

• Heat Pumps | Mass Save

  Install a high-efficiency heat pump for dual heating and cooling—and start saving energy.

• Business Mass Save Blog

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  ENERGY STAR® Certified Room Air Conditioner

  Escape the heat with an ENERGY STAR® certified room air conditioner.