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    • Ice Dams
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      • Young Living Essential Oils
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978-266-1122

Blog

  • Why We Do Not Use Spray Foam at Dolphin Insulation
    Wednesday, January 1st, 2020

    Why We Do Not Use Spray Foam at Dolphin Insulation

    Installing foam insulation in your home is a dangerous and detrimental mistake, and this is why our company does NOT use it. Foam contains toxic ingredients, it is a...
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  • Smart Thermostats: Save Time, Energy, and Money
    Friday, November 23rd, 2018

    Smart Thermostats: Save Time, Energy, and Money

    Thermostats are often the culprits when it comes to overheating and overcooling your home. You turn up the heat too high to warm your home a couple degrees, but...
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  • Insulation’s Early Years: Promise for Progress
    Thursday, January 22nd, 2015

    Insulation’s Early Years: Promise for Progress

    Building science is a fairly new field. We still develop new materials, new solutions, and constantly look to advance. In this industry, there are many specialists who all work...
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  • Unavoidable Increase: Choose to Save
    Saturday, January 3rd, 2015

    Unavoidable Increase: Choose to Save

    To get straight to the point, energy rates are projected to skyrocket this winter. World Energy compiled the top five reasons that energy rates will hit a sharp incline...
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  • The Hidden Energy Stealer: Where to Look
    Thursday, January 1st, 2015

    The Hidden Energy Stealer: Where to Look

    It seems like the easiest way to get things done these days is to make a list. We have lists for grocery shopping, lists for a busy day of...
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  • These Multifamily Homes Upgrade to Efficiency: So Can You
    Monday, November 24th, 2014

    These Multifamily Homes Upgrade to Efficiency: So Can You

    Living in a multifamily building means sharing your energy resources. Recent research reports new ways to transform energy use in these multifamily homes. All buildings need insulation and air...
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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
  • Lead Safe
  • Rotary International

Client Testimonials

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

  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
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...
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  • 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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Littleton MA, 01460

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