certified company
Based on 117 reviews
Our Certification Process
Best Pick Guarantee
Verified License(s)
Verified General Liability Ins.
Verified Workers' Comp
3rd year as a Best Pick Call
"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
Company Information
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.
The company offers a one-year workmanship warranty.
Company History
Comfenergy was started in 2010.
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.
Areas Served
Prince William, Fairfax County, Loudoun County, Arlington County
A selection of 117 homeowner reviews:
“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 can't think of any problems we had with Comfenergy. They did the insulation work for us in February, and they were excellent. I'd give them an A+. They did the work for us just before we put the house on the market. We were very pleased with their advice, counsel, and the quality of their work. The guy who set up the whole project and the people who did it were all excellent.”
“We're pretty happy with what they did to our house. I'd give them an A+. I already recommended them.”
“I'd give them an A+ for everything.”
“I'd rate them with an A+.”
“It's been great. I'd give them an A+. They were great.”
“I'd give them an A+. The estimator was really knowledgeable, and he conveyed that knowledge in a way that was understandable. It really enabled the whole project.”