Improve your home's insulation

Why? Improving the insulation in your home can be the single most effective action you can take to save energy. Improvements to insulation can help you stay warmer in the winter and cooler in the summer while reducing your energy costs by 15%.

How to install:

  • Professional option: Have a professional identify areas that need insulation and install it. A professional is helpful when you are remodeling or adding on to your home and you are trying to identify areas to re-insulate.
  • Do-it-yourself option: You may be able to install insulation on your own in certain areas. An attic without heating or cooling is a prime area for an insulation project with great results.

What to look for: All insulation products have an "R-value," which means the resistance of the material to heat transfer. A higher R-value means more insulation. We recommend a value of R-49 or better for your attic and R-13 or better for your walls.

Good to know:

  • Seal air leaks at the same time you improve insulation.
  • Consider improving your insulation before replacing your heating or cooling system — with better insulation a smaller furnace or air conditioning system may be sufficient.

Popularity in your area Help

3,846 people do this

Tip Details

Save up to $200 per year

Offers and Incentives: Through the Mass Save program, National Grid offers no-cost targeted air sealing and will fund 75% or more of the cost toward the installation of approved insulation improvements. You also have the opportunity to apply for a 0% loan to help finance energy efficiency upgrades. Loans are available for up to $25,000 for up to seven years.

Call 1-866-527-7283 to schedule a no-cost in-home energy assessment with an expert, or visit