Weatherization

Taking steps to air-seal and insulate your home will ensure that it is ready for your new clean energy system and will help you reduce overall energy consumption. A tighter, more insulated home will not only save you money on operating costs and reduce your carbon emissions throughout the year – it may also allow you to buy smaller, less expensive equipment in the first place.

Here are a few ways to increase your home’s efficiency and reduce its heating and cooling load:

Air sealing

Ensuring there are as few gaps as possible for indoor hot air to escape and cold outdoor air to get in reduces the heating load in a home. Air leakage can represent up to 40% of space-conditioning costs in a leaky building. Weatherization professionals will focus on sealing leaks hidden in the attic, garage, or between floors. Air sealing often involves re-sealing windows, replacing broken or jammed vents, and replacing the rubber seals around door frames. Experienced professionals will know the common culprits of air leakage to target, but a professional assessment of hidden leaks using a blower door to pressure-test the house is the best way to find leaks in your house.

Insulation

Adding insulation slows heat transfer through the building envelope (walls, roof, floors, etc.); heat transfer is the leading cause of heat loss in the winter. Working with a professional contractor to improve roof, wall, and floor insulation can considerably lower heat transfer, improving your home’s efficiency. Many insulation contractors are trained to air-seal before insulating, when it’s much easier to do.

Ductwork upgrades

If your home utilizes a centralized heating or cooling unit with ducts outside of the conditioned space of the home (e.g., in an attic, basement, garage, or crawlspace), sealing and insulating the ducts can significantly improve the overall efficiency of your system by ensuring that more of the heated or cooled air gets delivered to where it is needed.

ADDITIONAL RESOURCES FOR WEATHERIZATION

Mass Save®
Mass Save® is a coalition of electric and natural gas utilities and energy efficiency service providers that work together to promote energy efficiency: Berkshire Gas, Blackstone Gas Company, Cape Light Compact, Columbia Gas, Eversource, Liberty Utilities, National Grid and Unitil.

Muni HELPS
Muni HELPs is a residential energy conservation service provider for many Massachusetts residents served by a municipal utility. If you are served by a municipal utility that is not part of the Muni HELPS or ENE programs, talk directly to your municipal utility about weatherization incentives.

Energy New England
ENE is a residential energy conservation service provider for many Massachusetts residents served by a municipal utility. If you are served by a municipal utility that is not part of the Muni HELPS or ENE programs, talk directly to your municipal utility about weatherization incentives.

Weatherization Assistance Program
Provides eligible households with full-scale home energy efficiency services.

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