4th year as a Best Pick
Best Pick 2018
certified company
Based on 139 Surveys
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Compiled Score: star star star star star
Comfenergy has received 5 out of 5 stars (A-rating) based on 139 customer surveys conducted by Best Pick Reports.
4th 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 lifetime warranty on materials and labor.
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
Bristow, Gainesville, Haymarket, Manassas, Manassas, Nokesville, Woodbridge, Alexandria, Annandale, Burke, Centreville, Chantilly, Fairfax, Falls Church, Herndon, Lorton, McLean, Reston, Springfield, Vienna, Aldie, Ashburn, Leesburg, Purcellville, Sterling, Arlington

“Their work made it positive. Comfenergy did insulation. They did excellent with no issues across the board. I've already recommended them.”

“It was very good. They did everything they said they were going to do. They were informative, and they handled themselves professionally, great deal of help. They used foam insulation. It was A+. They did everything they said they were going to do.”

“Comfenergy provided the service that they bid for within the budget that we had agreed. They were careful and they were quite professional. They put insulation in the attic. I'd rate the experience with an A.”

“I did have my roofing and siding done. I'm not sure if it was the contractor that did the insulation, but if it was part of that then that whole experience was positive. Of course, my roofing got taken care of. It got damaged in the storm and my siding got damaged also. So all in all, I'm happy with the work that was done to the house. If it's the insulation, I would say A. I didn't have any issues with the insulation.”

“I had a positive experience.”

“I think the way they did the work and their customer service when they're here was positive. They cleaned up well after themselves, and they just got the job done when they said they would. They put in insulation in the attic area. I'd give them an A.”

“It solved my problem. They used foam insulation. The comfort of the home is probably better. I'd rate them an A.”

“These guys were good, and they did a really good job. I would give them an A on that. They were really good.”

“They came and did a good job, very nice and very good. They added more insulation to the attic. I have noticed a difference in my energy bills. It's an A.”

“They did insulation in the attic. Their professionalism made it positive. I have noticed a difference in the comfort of my home and energy bills since it was completed. I'd rate it an A.”

“They did their work quickly and did a very good job and all of the interactions with everybody was very good. They did some insulation repair because there were certain parts of the house that weren't insulated. I would give them an A. They didn't step into the house. They did everything outside and they cleaned up after themselves. It was almost like they were barely there. They were very knowledgeable.”

“They were in and out quickly and they did the job that they said they were going to do. It went fine. They insulated an exterior room in our house. It was a full insulation, not your typical insulation. An A is fine.”

“They were very thorough in their initial quote. They provided evidence of the kind of work that we needed. They explained everything very clearly. They installed some insulation, as well as a new fan in our bathroom. I'd rate it an A. Their quality of work was great. We have really good quality insulation that's clean. We don't have all the fluff going all over the place that you have with you know, the traditional insulation and our basement has been much warmer.”

“He was easy to get a hold of, and we did a lot of communication back and forth so I think communication was a plus. We had some heating discrepancy between the rooms, so they did some insulation and venting. I would give an A-. It was a tough problem. It wasn't something we were expecting a quick fix.”

“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.”

“I'd give them an A+.”

“The work was done in a timely fashion. The people I corresponded with were professional. They knew what we needed and were able to get the job done well. They were also willing to come back when we'd had some spots that they missed, some insulation spots. They came back and touched it up in a timely fashion. It was a good experience. I'll give them an A+.”

“It was an A+ job.”

“Comfenergy deserves an A+.”

“I'd give them an A+. They were very professional. They knew what they were doing. They scheduled quickly, came, and did everything very quickly. They were great.”

“I'd give them an A+. I like their product.”

“Comfenergy were here about a year ago. It was an A+ job.”

“I had no complaints with them. They were very good to work with.”

“I would give them a solid A. I would say they were good all around. It's been a year.”

“I'd give them an A.”

“It was all good. I have no complaints.”

“Everything seems to be working. I have no complaints at all. Comfenergy did everything they said they were going to do, and the attic seems to be functioning as I'd hoped, so I have no issues.”

“Comfenergy gets an A from me.”

“I'd rate them an A, though it was probably a middle-of-the-range job for them.”

“It seemed to all be very nicely done, and very clean. I'd give them an A.”

“I'd give them an A.”

“I would rate them with an A.”

“The guys were a little sloppy in their application, but otherwise good. I'd give them an A.”

“Comfenergy gets an A from me.”

“I'd give them an A grade for the work done.”

“I don't live in either house I've had done with Comfenergy, but I have clients who do and they seem to be very responsive. They come and do their work neatly, and, as far as I can tell, very completely. I have no complaints overall.”

“I would give them an A for the work they did for me.”

“I'd give them an A.”

“Comfenergy were on time. They were professional, and whatever they promised, they delivered, and it was all done in the right time span. I'd give them an A.”

“The owner and the sales rep were very good people, and they're genuinely interested in the work they do, and making sure it's done right. I'd give them an A.”

“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.”

“They insulated kitchen pipes for me. We decided on what we needed based on what was happening in my kitchen—the walls had exposure to the outside, so we were able to assess what we needed. They were able to determine it, and they pumped insulation into my drywall. I just had a good experience with their technician. I got more quotes, but I thought they were more professional. I would give them an A. They were very professional, and the crew was accommodating.”

“Comfenergy was excellent. They insulated a crawl space and an attic, and the servicemen were courteous and very professional. The gentleman who had the sales information was absolutely perfect. It was a great experience all the way around. I would rate them as an A+ company.”

“They were very, very good and very professional. They checked in with us many times because it was a very large, complicated job. We'd discovered a huge leak in one of our walls; all three floors had mold, and the studs had rotted. Our main contractor found Comfenergy because they were willing to do a smaller insulation job that a lot of other companies weren't going to bother with. It was a nightmare, but they were great—A+.”

“They upgraded the insulation in the entire house, and they did an audit. They were very comprehensive. I'd give them an A+.”

“I had Comfenergy spray and clean my ducts. They're super neat people. They take your ducts and do a thorough cleaning. There are many holes in the ducts from the screws and accidents, so then, they spray a plastic coating to secure all the holes. According to his numbers, we increased our blowing efficiency by 90 percent after we used it. The owner of my heating company gave me this guy's name, and he came out and did an assessment of the insulation in my attic. Comfenergy is an A company.”

“Comfenergy did the assessment, so I just used them for the work. They determined what I needed, and then they put it in. All around, it was an A+ job.”

“They sealed the attic and did blown-in insulation. There's a little bit of a difference; we've noticed that the temperature between all three stories is the same now. The quality of service they provided was excellent, and the workers explained everything and actually helped me do a couple things in the attic before the insulation was blown in. I had an attic fan that wasn't working, and the guy helped me disassemble it because we didn't need it anymore. They earned their A+ from me.”

“Comfenergy insulated attic space in addition to doing a remodel of the attic and walls. Since we tore everything out, we knew what we needed to do. I've noticed a difference—it stays cooler in the summertime. They did A+ work.”

“They were very friendly and on time. It was my first time using Comfenergy, but I would give them an A rating.”

“They were professional, they seemed to be responsive, and they resolved our issues quickly. I think they deserve an A.”

“They were knowledgeable. They were really quick returning emails and phone calls, and the staff was friendly. I was pretty pleased with the service, overall—it was an A.”

“Comfenergy did what they said, and they did it on time. It was all clean and neat. I'd rate them as an A.”

“Comfenergy did a great job. They're an A company.”

“They encapsulated the crawl space underneath my house, and they did a good job. I think it looked really nice. An A grade suits them.”

“The guy took a look at everything and gave me a very clear explanation of what he thought I needed and why, complete with pictures. The people who came and did the insulation work were very knowledgeable. They were very good about explaining what was going on. They found some additional things that needed to be done, and I approved. I heard about the company through a contractor I was using to do some other work here. I had a very good experience with them. They get an A grade from me.”

“They remediated our crawl space, which hadn't been cleaned in over 30 years and was very moldy. The guy went through what he had to do and helped us understand, and he did it in a timely fashion. I was referred by environmental consultants. They were good people. I'd give them an A.”

“They added some foam insulation inside the walls. I had to do the finishing work and get it painted again, but they did the insulation install. I heard about the person who did it from a neighbor. They did an A job.”

“Comfenergy was great. They sealed the vents of the ductwork and improved the insulation in my attic by covering the leaks. They're absolutely an A company.”

“Comfenergy corrected some energy deficiencies by adding some insulation in my attic and plugging up some air gaps. They get an A grade from me.”

“They did an energy audit, and they also did duct sealing. He put a return vent on the lower level. He made some great suggestions. The HVAC company recommended them to me. They had good customer service. I would give them an A.”

“I smelled cigarette smoke in my unit, which was what I was concerned about. I don't smoke, but I live in between two smokers. They did a blower door test to identify the places in my condo where air from other units was coming in. Then, he identified places I could seal up to reduce the amount of cigarette smoke. Someone referred me to them. I'd give them an A.”

“They installed some things in my attic, and they also conducted an energy audit. I think it's made a difference. They were very efficient; they came in and did what they needed to do. They were very neat and clean as well, and we really appreciate that. I would rate them as an A. Overall, they did a great job, but I noticed that from the bedroom, you can see a little bit of hole in two places. I didn't contact them because my husband said he'd just patch it up; it wasn't a big deal.”

“Comfenergy did some insulation in a crawl space. I haven't really noticed a difference because summertime isn't quite the same as winter. I think he has significant experience doing heating and air conditioning work. He understands the ins and outs of that, so he can help people better insulate their houses. They get an A from me.”

“I would give Comfenergy an A grade for the attic work they did.”

“I called them, and they did the work—it was very straightforward. They were suggested by a realtor. Overall, I'd say I had an A- experience.”

“They did some insulation work on the house; they were just trying to close up some air leaks that I had. They did a good job. I heard about the company from a friend. I'd give them an A grade.”

“I haven't seen a significant difference in the heating bill, but Justin, the guy who sold it to me, is a good salesman. He did a presentation in my office. I would give them an A.”

“They did some insulation work in a crawl space. The work was done as described, on time, and for the price quoted, so my experience with them was positive—it was an A.”

“The site coordinator from Comfenergy was fantastic. We did attic insulation, so they did a few things—they covered some gable vents, then they blew in insulation. He walked us through every step of the process and answered all of our questions. He was amazing. I would definitely give them an A.”

“Comfenergy did an excellent job—they were really very good. They were always on time, they always did what they said they were going to do, and the quality of work was absolutely terrific. I'd give them an A.”

“I had an awesome experience with Comfenergy. They reinsulated my attic, and when they were done, the house was almost cleaner than when they got here. They had to take insulation out of the attic through the master bedroom, and there were no signs of insulation in the house. They deserve an A+.”

“They reinsulated my attic for me. They were courteous and on time. I heard about them through a friend of mine's HVAC company. I'd say they did excellent work—no complaints.”

“Comfenergy is fantastic. I'm a designer, and they do work for my clients as well. They did a great job. They deserve an A—they're a good company.”

“They did spray-in insulation for the entire house. I needed the insulation in the basement also. They're honest, responsive, and quick. They really went above and beyond with the service they provided. They're still in touch during the follow-up. One of the best things is they offer the solution that's best with my house, which had probably a dozen insulation problems. The general focus on education as opposed to just selling me the most expensive product is something I also appreciate. I think they're A+—I've recommended them to my neighbor already.”

“They encapsulated my crawlspace in the basement. I knew I wanted it done. They were very responsive, they were very friendly to work with, and they were in and out in about three days. They should get an A++.”

“They were great. They came out, they were prompt, and they did what they said they were going to do. It was quick, clean, and they did everything perfectly, so no issues. A+ from me—they did a great job. I'd recommend them to anyone—these guys are good.”

“They did a great job. They informed me very well about the process, like what they were going to be doing and what I needed to do. They gave me books on the subject matter. The workmen were very polite, professional, and courteous, and they cleaned up. They did the job on time—sometimes contractors don't come back for a few days and come back later—but they did everything. The owner was very much involved in keeping in touch with me and making sure everything was OK, which is good when it's totally out of your realm of experience of ever having done anything like that. I had a crawlspace that they encapsulated, so it was something I didn't know about. They walked me through the process, and all of them were very good to work with. If I had a concern, they addressed it right away. I'd give them an A++—there's not a thing they could've done any better.”

“They did some extensive insulation work for me, and they did a great job—they provide an A+ service. I heard about the company through referrals.”

“I couldn't say enough good about them. They were really determined to see that our issues were resolved and were interested in doing a good job for a good job's sake. They really worked with us. We have a big, drafty town house, and now we have lower energy bills. We significantly fixed the issues. I've had a lot of contractors in here for different stuff, and bar none, we suggest them to everyone. They get an A+ from us.”

“They did a really good job—they were very professional in everything they did. They replaced the insulation in the attic. I'd give them an A, A+.”

“They were great. I had to have energy audit done and my crawlspace conditioned, so they had to take out the old insulation and vapor barriers, put in the new ones, and asses some of the issues I had. I felt like he was very honest. He even started one portion of the project and realized that, until I had something else fixed on the exterior of my face, it was a waste of money to pay him to do that portion. I just liked the fact that he was very honest about that. I appreciated it—A+.”