Comfenergy: Insulation contractor in Sterling, VA

The service provider, as administrator of the site, does not verify whether the opinions published on the site come from consumers who have purchased or used the product or service in question. The rating in stars (up to 5) is the arithmetic average of all ratings given within the reviews published below.

• Saran Ahluwalia

  • 5,0
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  “I was really impressed with Melvin and his team’s work. They completely air-sealed and insulated my attic, going above and beyond with R60 insulation on both the flat and sloped areas. They also took care of encapsulating my ductwork and adding a radiant barrier – it’s already making a noticeable difference!” report abuse

• Sam Bressi

  • 5,0
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  “We recently worked with Comfenergy to have our attic insulation removed and replaced, and we couldn’t be happier with the whole experience. From the very beginning, they were incredibly responsive and professional – prompt, courteous, and really clear about everything.” report abuse

• Jackie Oh

  • 5,0
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  “I had some insulation work done in the summer of 2023 to address condensation problems. The installer assured me this would solve the issue, and I took extra precautions by leaving the space open for a full year afterward, just to be certain there were no further problems.” report abuse

• Aivars Baumanis

  • 5,0
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  “We were absolutely thrilled with the work Juan Guevara Sorto and his team did to seal our crawlspace. The difference is incredible – it’s a real night and day transformation! We’re so pleased with the whole experience with Comfenergy, from the first consultation right through to the final job completion.” report abuse

• Timo D

  • 5,0
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  “Overall, it was a really positive experience working with the team. Ozzy was fantastic – he was really considerate of our home and clearly explained the best way to address our problem. We appreciated his professionalism and the detailed information he provided.” report abuse

• Matthew McCarty

  • 5,0
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  “I was really pleased with Congeners – they did a fantastic job addressing our insulation and humidity concerns. The crew was incredibly friendly and professional, and they kept me fully updated on the progress. Best of all, there were no unexpected costs and they left the whole area spotless when they were finished. I’m very happy with the service we received!” report abuse

• Hope Solomon

  • 5,0
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  “We’ve been absolutely thrilled with Comfenergy! Our old 1950s cinderblock house used to be a real battle against the weather – freezing cold in the winter and stiflingly humid in the summer. We honestly spent months trying to get a handle on the heating and cooling, but it turned out to be a much bigger job than we anticipated.” report abuse

• D Parsons

  • 5,0
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  “Overall, we were really pleased with Comfenergy’s work. They handled the whole project – removing the old insulation, installing radiant barrier, completely air sealing, and adding blown insulation – really well. The team was punctual, clearly knew what they were doing, and were very considerate of our home and property.” report abuse

• Michael L

  • 5,0
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  “Mr. Guzman and his team did an absolutely fantastic job with our attic insulation. We’re so pleased with the work they did – we couldn’t be happier and we highly recommend them without hesitation.” report abuse

• Ryan Kelly

  • 5,0
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  “We were so pleased with Carlos and his team at Comfenergy. They were fantastic – they not only completed the project on schedule, but they also quickly spotted some extra issues in the attic and took care of them right away. Their workmanship was excellent, and we really appreciated their attention to detail. We’re so glad we chose Comfenergy!” report abuse