2017 EBSCO Research Best Pick


3rd year as a Best Pick

  • A-Rated
  • Verified License(s)
  • Verified General Liability
  • Verified Workers' Comp

"Comfenergy begins every interaction with a full evaluation of the home, including blower door testing and thermal imaging. This evaluation allows the homeowner to see the invisible causes of their discomfort and high energy bills. We provide solutions, not just insulation."

Justin Dobson | Co-owner

Areas Served:

Prince William, Fairfax County, Loudoun County, Arlington County

  • Services Offered
    Comfenergy installs all types of insulation, including cellulose, fiberglass, spray foam, and foam board in crawl spaces, attics, floors, and walls. The company also offers duct cleaning and repair, air sealing, window replacement, mold remediation, moisture control, and home comfort and energy services.
  • Services Not Offered
    Comfenergy does not offer emergency water cleanup services.
  • Warranty
    The company offers a one-year workmanship warranty.
  • Distinctions
    The company is a member of the Loudoun County Chamber of Commerce. Comfenergy was a finalist for the chamber's 2016 Innovative Business of the Year Award and a runner-up for its 2014 and 2015 Service Business of the Year Awards. Additionally, owner Justin Dobson was a recipient of the chamber's 2015 Entrepreneur of the Year Award.
  • Company History
    Comfenergy was started in 2010.
  • Licenses

Select Quotes from Customer Interviews

A selection of 117 homeowner reviews:


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They're a wonderful company. I've come across a company like them very seldom in my life. Everything that they did was honest. They did what they said they were going to do, and they did it well. They're an A+ company. I can't say enough good stuff about them. I also met the owner, and he's why that company is the way it is. I certainly would recommend them.
Comfenergy got the work done efficiently. Everything was cleaned up beautifully. They did everything they were contracted to do. I'd give them an A. Their punctuality was fabulous.
I'm very happy with them. They were A+ people—super. I'm so pleased with the customer service.
I'd give Comfenergy a solid A. They were on time and did exactly what they said they were going to do. They did a beautiful job; it looks great. We're very happy.
I remember using them. We had them do some spray insulation in our garage area. We had some issues with freezing pipes above the garage—we had two burst in three years. They came in and confirmed some of our thoughts and concerns about the lack of insulation and the areas where we had issues. They came up with a game plan for how to execute it and correct it, and in a couple of months, they were completed. I would grade them an A+.
They were very responsive. They just put insulation in my attic after we had a pipe freeze—that's supposed to cure that problem. They were just very responsive; if you had a question, they would respond to it and answer right away. They're grade-A.
It was very good. They were one of the only companies that I could find to do the actual work. It was great. We had insulation put under a bay window. He showed us how he did it, and when he came, that's exactly what he did. I would grade them an A.
They were easy to work with, and they were fine. They installed insulation in my walls. My contractor dealt with them mostly, but everything was fine on my end. They get an A.
They were very professional—everyone that was here was professional, and they did a great job. I appreciated everything. They insulated a crawl space that had been giving me problems; it made a huge difference this summer, and I'm hoping it will make a big difference this winter. I would grade them an A.
They did the attic, and they were professional. I would rate them as an A.

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