"Applying Building Science to Every Home- Personally" is our motto because that is what we do.  Building Efficiencies, founded in 2008, works within the Building Performance Industry standards.  We started as Energy Auditors in 2008, and found that the contractors in the field didn't have the level of knowledge in building science we desired, so we started our own crews in 2010 and now with over 5 crews and growing serving a high standard of excellence within the Home Performance Industry.

Now we have taken that knowledge and embraced the new construction industry and only work at the Energy Star levels.  What that means is we conduct our installs at the same level you would expect for Energy Star homes.

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  • 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,