• Building Efficiencies Trucks In Front of House
    Residential New Construction
    Building Efficiencies specializes in Energy Star grade 1 insulation for New Construction Residential. Whether you are using the Energy Star rebate or not, our installs are Grade 1!
  • Close-up of Spray Foam Insulation
    Insulation Services
    We offer insulation installation for homes, multi-family buildings and commercial buildings throughout the region.
  • Building Efficiencies Team Standing In Front of Trucks
    Energy Retrofit
    This is our team! Professionals with years of experience that have been tested at some of the highest specification requirements and passed with flying colors!
  • Cross Cut of Building Efficiencies Truck and Finished Spray Foam Work
    Commercial Buildings
    No building too small. Spray foam services for large commercial buildings

Insulation & Weatherization Services

Maximize Efficiency On Your Home Build or Existing House.

Contact The Southern NH Experts At Building Efficiencies!


Schedule Service

  • Thank you for completing the insulation project ahead of schedule. Your staff was very professional and accommodating with all the residents and employees.  All issues were address quickly, and we were informed on changes to the schedule so residents could be notified in a timely manner.  

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    Diane - Nashua Property Director Multi Family over 300 units,
  •  I was just in the back room. In my stocking feet. Which did not immediately turn into little blocks of ice. Having lived in drafty old houses in NH all of my life, I am *astounded* at the difference good insulation makes. Seriously. I knew this was the right thing to do, but I had no idea

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    Sherry Contoocook - Single Family Retrofit,
  • As a commercial builder  I have used many insulation companies for our commercial buildings, but building my own personal home, I needed to make sure everything was perfect.  Building Efficiencies insulated my 5000 sq ft Energy Star home and we achieved the highest results possible.  Thanks

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    Dennis - Nashua Energy Star Home,
  • I wanted to let you know how much I enjoyed working with you and your firm during the weatherization of our Town Buildings.  I have executed several large contracts in the last couple of years and yours was by far the easiest to manage.  I attribute that to your hands on management and
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    Kurtis - Director of Public Works, Several Historic Town Buildings,