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  • Home
  • Residential Services
    • General Contracting
    • Ice Dams
    • Comfort/Drafts
    • Indoor Air Quality & Mold
      • Young Living Essential Oils
    • Sound
    • Hot and Humid Homes
  • Commercial Insulation
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Call Now for an Energy-Efficiency Consultation
978-266-1122

Blog

  • Staying Cool Doesn’t Have to Cost You!
    Monday, July 15th, 2024

    Staying Cool Doesn’t Have to Cost You!

    Replacing it with fresh insulation that is densepacked into walls, roof rafters or attic floors ensures your home is insulated to code as well as peak levels for both...
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  • Allergens, Moisture & Mold, Oh My!
    Saturday, June 15th, 2024

    Allergens, Moisture & Mold, Oh My!

    After a long winter, we can’t wait to open our doors and windows to let in the fresh air! But the arrival of summer means it’s that time of...
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  • Staying comfortable despite hot weather, humidity and allergies
    Wednesday, May 15th, 2024

    Staying comfortable despite hot weather, humidity and allergies

    Winter may be gone, but… The solution to your cooling, comfort and cost concerns Many people don’t realize that insulating not only helps you be more comfortably warm and...
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  • Looking to insulate with only natural, safe products? You’ve got options!
    Monday, April 15th, 2024

    Looking to insulate with only natural, safe products? You’ve got options!

    Introducing two new products: Timberfill and Havelock Wool As you may know, we pride ourselves on using only all-natural insulation such as cellulose in our customers’ homes and businesses,...
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  • Get the HERS energy efficiency rating for your home renovation, addition or new construction
    Saturday, March 30th, 2024

    Get the HERS energy efficiency rating for your home renovation, addition or new construction

    We now have a trained and certified HERS (Home Energy Rating System) rater on our team! Why that matters…. The Home Energy Rating System (HERS) is theindustry standard for...
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  • What would you do if you saved thousands on energy bills?
    Thursday, February 29th, 2024

    What would you do if you saved thousands on energy bills?

    One of our customers went on a cruise to the Caribbean! Over the past year, we’ve relayed the unbelievable energy savings experienced by a homeowner in Littleton. They’ve shared...
    Read More

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Accreditation and Awards

  • Angies List Logo
  • Energy Star Logo
  • National Association of Realtors Logo
  • Appraisal Institute
  • Massachusetts Department of Energy Resources
  • U.S. Department of Energy
  • Angies List 2013 Super Service Award
  • Angies List 2014 Super Service Award
  • BPI Certified Professional
  • Lead Safe
  • Rotary International

Client Testimonials

Our customers speak for themselves — read some of our recent reviews!

  • We used Dolphin Insulation for multiple weatherization items around our house including air sealing, blowing cellulose insulation, etc. From the first contact to schedule the job, to their professionalism, to the quality of their work, Dolphin as a whole is a fantastic group. Highly recommended.
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    Eric Robert Avatar
    Eric Robert
    3/22/2021
  • We thought Dolphin Insulation was great! We had little to no insulation in a home we recently bought. Losing heat and central air running constant was an issue that they corrected for us. We are seeing a huge difference this week with the central AC. Thank you again!!
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    Kelly Monahan Avatar
    Kelly Monahan
    6/22/2021
  • I was and still am very impressed and happy about the insulation installed in my attic. I can feel the warm air staying in and seeing the snow on roof not melting away so fast as the attic is well insulated. I would highly recommend Dolphin insulation to everybody.
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    Glen DeRosa Avatar
    Glen DeRosa
    1/22/2021
  • Dolphin Insulation replaced the insulation in our 2nd floor/attic. We are very pleased with the result. Ryan, the on-site project foreman took the time to explain the work as it progressed so that our questions were answered daily. He and his team were friendly, knowledgeable, and careful with our home. We would highly recommend Dolphin if you are serious about insulating your home.
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    John Hickey Avatar
    John Hickey
    2/16/2022
  • Chris and his team were great. Did fast, efficient work, cleaned up after themselves and were unobtrusive to a family working from home. A great experience!
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    David Wrangham Avatar
    David Wrangham
    8/29/2021
  • So many wonderful things to say about this company! From the first time I called to see about scheduling I was blown away with the helpfulness of the individual I spoke with. She was anticipated my needs, spoken knowledgeably about our job and was even able to get us onto the schedule in the timeframe that worked for us! Once the crews showed up to do the job the service got even better! They were professional, checked in to make sure we were updated on the project/answered all our questions, and very clean in the job. They finished when they said they would and actually provided us a revised quote once they discovered part of our house was insulated from a precious addition. Would recommend this company time and time again- you won’t be sorry!
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    Katelin Jeray Avatar
    Katelin Jeray
    5/22/2021
  • I hired Dolphin to make my poorly insulated older home more energy efficient. I am so glad I did! They did an excellent job! Both technicians, Chris and Dustin, performed all the work and did an impressive job! They arrived on time, super professional, knowledgeable, courteous and they took time to ensure my home was not a mess! I couldn’t be happier! Thank you Dolphin, Chris and Dustin!
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    George Pappas Avatar
    George Pappas
    5/10/2021
Read More Testimonials

Blog & News

  • You Don’t Need to Freeze to Offset Energy Costs
    February 15, 2025
    You Don’t Need to Freeze to Offset Energy Costs
    Are you lowering your thermostat to save on energy costs? We’re all seeing higher oil, gas and/or electric heat...
    Read More
  • Commercial Building Owners: Get a 50-80% Rebate on Insulation
    January 15, 2025
    Commercial Building Owners: Get a 50-80% Rebate on Insulation
    MassSave, in partnership with Eversource and National Grid, is rebating businesses up to 80% of the cost of insulating...
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  • Do you know how old your insulation is?
    November 15, 2024
    Do you know how old your insulation is?
    If your insulation is at least 15 years old, and especially if you’ve had it for 20 years or...
    Read More

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