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Products & Services

Insulation Services
Spray Foam Insulation
Attic Insulation
Super Attic System
Blown-In Insulation

Types of Home Insulation

Basement Insulation
Crawl Space Insulation
Garage Insulation
Wall Insulation

Air Sealing Services
Blower Door Test

Additional Services
Ductwork Solutions
Home Energy Audit
Replacement Windows
Replacement Doors
Interior Window Inserts
Aspen Air Purifier

Before and After Pictures from Reston
Reston VA Radiant Barrier

Reston VA Radiant Barrier

Before After
Reston VA Radiant Barrier Reston VA Radiant Barrier

This Reston VA homeowner wanted to make their home more comfortable across all of the rooms in the home. In addition to Air Sealing, Insulation and Spray Foam across several HVAC ducts, the project also included use of material installed on the under side of the roof rafters to act as a radiant barrier.  This would help reflect radiant roof heat away from the attic in the times of year when the sun was at its strongest. 

Reston, VA Attic Upgrade

Reston, VA Attic Upgrade

Before After
Reston, VA Attic Upgrade Reston, VA Attic Upgrade

This Reston, VA attic had low-quality insulation that was making the home too hot in the summer and too cold in the winter. We went out to the home and had our sales professional complete a full inspection. He determined that the best solution would be to tear out and dispose of the old insulation, add ZypFoam to air seal the freshly cleared attic floor, and then add new TruSoft cellulose insulation to keep the home comfortable year-round.

Reston VA Attic Spray Foam Wall Insulation

Reston VA Attic Spray Foam Wall Insulation

Before After
Reston VA Attic Spray Foam Wall Insulation Reston VA Attic Spray Foam Wall Insulation

This Reston VA home had an attic that was not properly insulated and causing comfort issues in the home.  A lack of an air seal for the attic was allowing conditioned air from the rooms in the home to leak away.  Walls in the attic that were covered with traditional bat insulation were not holding temperature and had cracks where more air was escaping.  Our production team removed the existing insulation from the attic, used Zyp Foam to air seal all of the gaps and cracks where air had been able to escape and then used Spray Foam to insulate and seal the walls.  Tru Soft cellulose insulation was then blown in to cover the rest of the attic floor/surface.  

Company Awards
Loudoun's Favorite Insulation Company 2019
The results are in from Loudoun Now's Annual Favorites Poll. Comfenergy is the winner for Favorite Insulation Company!... [Read more]
Best of Loudoun - 2019
We won the Best Insulation Company in Loudoun County again this year!!... [Read more]
2018 Superior Service Business of the Year
Comfenergy earned the 2018 Superior Service Business of the Year award from the Loudoun County Chamber of Commerce... [Read more]
More Awards

Reputable Spray Foam & Attic Insulation Company Serving Reston, VA

Outstanding job, arrived on time or early each day, very professional and friendly, high quality work, excellent crew leader....
Happy Customers Surrounding Reston, VA
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Reviews From Reston
Testimonials From Reston
I can't say enough about how happy I am with their service and the results speak for themselves.
Testimonial by Heidi F. from Reston, VA
Ariel Campos and his partner took extra time to explain everything really well.
Testimonial by Gary S. from Reston, VA
A "5" for customer service!
Testimonial by Mickey M. from Reston, VA

Home Insulation Experts Serving Reston, VA

Comfenergy is Reston's authorized dealer of the nationally renowned Dr. Energy Saver network of the best energy-conservation contractors across the country. We are not just a contractor company, we specialize in helping you understand your home's current energy efficiency, suggest repairs, and we also do the work! Not only do we offer a variety of home energy services, but we also offer replacement windows and door services to keep the outside out and warmth in, and to boost your curb appeal. You'll receive the maximum energy and cost-saving results with the least amount of hassle. Customer satisfaction is our goal, and we take whatever steps necessary to ensure that you are more than happy with our service. At Comfenergy our slogan is "We Fix Uncomfortable Homes!", and we guarantee we will do that. If your energy costs are too high, or there are areas of your home that are too cold in the winter or hot in the summer, contact us today!

Expert Spray Foam Insulation Company

At one point pink fiberglass insulation was the best option for home insulation. However, today spray foam insulation is the much better option. Spray foam insulation has several benefits and beats the traditional fiber-glass product in every way. Spray foam insulation is the top choice for homeowners, contractors, and building scientists (the experts who study home energy performance) for several reasons. Here are the top reasons spray foam insulation should be your number 1 choice:

Advantages of Spray Foam Insulation:

  • Provides both insulation and air sealing
  • Fills gaps and cracks
  • High R-value
  • Speedy installation
  • Spray foam won't shift, settle, or fall out of place

Reston’s Trusted Window & Door Replacements

Comfenergy also offers window and door replacements for an even more beautiful and efficient Reston home. We install Simonton interior window inserts, window replacements, and door replacements with expert precision. Replacement windows and doors will help to maintain more even temperatures and eliminate drafts and energy loss in your home. New windows and doors not only improve the interior and exterior appearance of your home, but they also can lead to significant energy savings. Call to schedule a free estimate today in Reston, VA!

Help Your Home with Attic Insulation

Upgrading your home’s attic insulation is a very effective & popular energy-saving method because there is usually a lot of room for improvement. Most homeowners believe their attic has enough insulation but once we explain how much insulation is actually needed to make your home efficient people understand that they don’t have anywhere near enough. It is common knowledge that hot air rises which is why a properly insulation attic is one of the most important things you can do for your home. By adding attic insulation to your home you are guaranteeing to save money and also have a more comfortable home. Not having a properly insulated attic is equivalent to constantly leaving one of your windows open. Don’t wait any longer to learn more about the attic insulation methods we have available in your area!.

Attic Insulation Services Available in Reston:

  • Blown-in Insulation
  • Blown Fiberglass Insulation
  • Radiant Barrier
  • Rigid Foam Insulation

Crawl Space Insulation Experts

Do you need crawl space insulation installed or replaced? If so, you're in the right place! A damp crawl space with falling or sagging insulation usually means the space has a moisture problem. If that is the case our team of experts can provide a vapor barrier to keep moisture out of your crawl space. We can then replace your existing insulation with a better option such as rigid foam or spray foam insulation. If your crawl space is completely missing insulation then your home is most likely cold and drafty. This is because the environment in your crawl space will transfer to other parts of your home, which is why proper crawl space insulation is essential to keeping your home comfortable and your energy bills low. To learn more about crawl space insulation cost, call, or click today!

Complete Insulation Services You Can Trust!

Comfenergy is Northern VA's preferred home insulation and air sealing services company. We have helped many homeowners not only reduce their home energy bills but improve the overall comfort of their homes without patented home insulation solutions.  Did you know that most modern homes do not have adequate insulation? Because of this, your home may feel drafty or uncomfortable throughout the year, mostly in the summer and winter, and this can increase your home energy costs. Proper insulation in your home allows your heating or air conditioning systems to work more efficiently which will save you money. 

We offer a wide variety of home insulation products and services, and each one serves its own unique purpose.  Our most popular form of insulation is spray foam.  Spray foam insulation is extremely versatile and can be used almost anywhere in your home. Spray foam insulation is one of the best ways to lower energy costs, sometimes 30% or more!

Along with spray foam, we use many other different types of insulation as well. Some of our other insulation products include rigid foam, blown-in, cellulose, fiberglass, radiant barrier, and much more.  We understand that insulation is only part of the home energy and comfort equation, so because of this, we can insulate any area of your home.  We insulate spaces such as attics, basements, crawl spaces, walls, floors, garages, and much more.  If your home is uncomfortable or energy bills are too high, contact us today for a FREE home insulation quote!

Home Insulation Services:

Comprehensive Home Energy Audits

Do you think your home is not as energy efficient as it could be? The home energy experts at Comfenergy offer homeowners of Reston custom home energy audits.  Before we perform any work in your home, we will take the time to sit with you and discuss what areas of your home are your most problematic, and figure out if you are having common issues.  We till perform our energy audit, and once we have the results, we will go over our findings with you and figure out the next step.  We believe that this approach is the most beneficial for both parties because we can prioritize whatever work needs to be done without wasting your hard-earned money.  If you are interested in a comprehensive home energy audit, contact us today!

Get your FREE, no-obligation services estimate in Reston, Virginia, you'll also receive a free copy of "Saving Energy and Money at Home," a great book to use as you begin to create a more comfortable, healthy, and energy-efficient home!

Case Studies From Reston
This homeowner is Reston, VA had high utility bills, drafty areas, and mold growing on the under-side of the roof decking. These are indicators of a...
This Reston, VA homeowner was looking to seal up their home from air leakage. Any air leaks in a home cause HVAC systems to work harder to regulate...
Comfenergy was called because the bedroom floors on the front of this home were VERY cold in the winter. After careful evaluation and thermal...
Job Stories From Reston, VA
Happy homeowner after service.

This client was so happy with the results of her home's service that she reached out to give feedback on the work and team that visited her home.  We thrive on client feedback and do our best to exceed expectations for every project.  


I just wanted to let you know that the work that was done in my house made a WORLD of difference!!!  My upstairs bedroom is perfectly comfortable now – the heat comes blasting out of the vent.  The main floor is also more comfortable in the front room (over the storage room that had the exposed floor). Overall, the temperature is very even throughout the home.  I think that duct cleaning and sealing may have been the key to making this change.  While the insulation needed to be done (for sure), the vents upstairs now blow air much more strongly. Also, adding the return register and sound-lining the return ducts cut down on the noise. I don’t even notice the heat when it’s on.  I am waiting to see how things sound with the AC – that was always a lot noisier.

Just wanted you to know!

Thanks for everything,



Happy homeowner after service. - Photo 1Happy homeowner after service. - Photo 2Happy homeowner after service. - Photo 3Happy homeowner after service. - Photo 4Happy homeowner after service. - Photo 5
Work Requests From Reston, VA
Project Location: Reston, VA
House was built in 1985, drafty for sure, hope you can recommend ways to seal cold air from coming in. Thank you!
Project Location: Reston, VA
Soundproofing for commercial building to install recording rooms
Project Location: Reston, VA
Attic being insulated
Project Location: Reston, VA
Leaky windows, cold rooms, drafty vents.
Project Location: Reston, VA
Looking to insulate our attic
Project Location: Reston, VA
A prior owner of my home moved the 1980s attic insulation around in the attic and also placed old furniture etc. in the attic, causing noticeable.poor insulation for half of my townhouse. I want the insulation arranged back and need a professional since it is old maybe unsafe. It is possible I would replace the insulation all together if that seems worth the cost and effort. Thanks
Project Location: Reston, VA
Have a two-story, 3.5 car detached garage with zero insulation - first level walls are covered with OSB sheet goods - ceilings are bare studs want estimate for insulating entire first level
Project Location: Reston, VA
Would like an overall home energy audit to find problem areas and air leaks.
Project Location: Reston, VA
I am primarily interested in getting a quote to improve insulation in our attic. You did some work on our house about 6 years ago. I think one recommendation was to add insulation in the attic, which we didn't do at the time. It's probably a good time to take a look at everything again. Thanks.
Project Location: Reston, VA
1969 house. Just had old insulation removed. Before blowing in new insulation I would like to air seal all the through fittings and interior wall headers etc.
Project Location: Reston, VA
I have two attics that need removal and replacement. Main is +1000 soft and smaller attic is 200 sqft.
Project Location: Reston, VA
I'd like to improve the efficiency of our house to optimize cost and environmental impact. Would also like to see if there are tax rebates that can be taken advantage of.
Project Location: Reston, VA
Attic insulation.
Project Location: Reston, VA
I have a finished basement and I'm almost sure the rim joists are not sealed. I would like to know the cost of sealing them. Thanks
Project Location: Reston, VA
I have water coming through my ceiling from a dryer vent. Maybe condensation from A/C? My management company suggested I contact you
Project Location: Reston, VA
I am interested in replacing my attic insulation
Project Location: Reston, VA
I would like to have someone assess and properly insulate the main attic and possibly the garage attic. I'd also like to have an assessment of a couple of other areas that may benefit from spray in foam where the deck attaches to the house.
Project Location: Reston, VA
I'm contacting you for my son who owns the home in Reston. He keeps the AC very low and it causes the duct in the middle level 1/2 bath to condensate and has damaged the ceiling. We're looking to find a company that can insulate the ducts and possibly the attic and if necessary the garage ceiling.
Project Location: Reston, VA
Remove and replace existing attic insulation.
Project Location: Reston, VA
In my condo, the temperature in the main living room is not as cool as the bedrooms. I've had the ac unit checked and he recommended a home energy audit to see if there are other issues causing the discrepancy.
Serving the following Reston, VA zip codes
20190, 20191, 20194, 20195, 20196, 22096

our service area