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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
New insulation in Reston attic

New insulation in Reston attic

Before After
New insulation in Reston attic New insulation in Reston attic

This customer in Reston called about rodents in their attic and some issues with uneven temperatures throughout their home. Carl Depner went out to do an inspection and identified several potential services to help with the situation. A removal of all old fiberglass insulation was done along with removing any existing rodents and or waste. The floor of the attic was air sealed to help keep conditioned air inside the living space of the home, MoldX fogging spray was done to help reduce the possibility of mold in the future and the entire attic was covered in TruSoft Cellulose insulation. This will all help to better control the temperature inside of the home and reduce the possibility of rodents returning to the attic.

Cellulose Attic Insulation

Cellulose Attic Insulation

Before After
Cellulose Attic Insulation Cellulose Attic Insulation

A home in Reston, VA had old, yucky, and inefficient insulation in their attic. When an attic isn't properly insulated, several issues can occur including uneven temperatures, drafty rooms, and overworked HVAC systems. The Comfenergy team removed and properly disposed of all of the old insulation. Next, they air-sealed the attic floor with spray foam. And, finally, they installed blown-in Cellulose insulation into the attic. Now this homeowner has a more comfortable home that costs less to own. 

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
Looking to get our home assessed to improve energy efficiency.
Project Location: Reston, VA
We are relatively new to our house (<1yr) and are making improvements. Next up are windows and HVAC and electrical. It would be nice to know what order we should be investing in to make sure we make our work count quicker.
Project Location: Reston, VA
Need quote for attic insulation. upper level gets extremely hot in the summer and cold in the winter.
Project Location: Reston, VA
Our insulation is very old and damaged in many places, both in the attic and the crawl space and it seems to impact our home climate pretty significantly. Also we have some concerns of potential mold
Project Location: Reston, VA
Need to weatherize home
Project Location: Reston, VA
Attic needs full insulation refresh
Project Location: Reston, VA
Looking to get an energy audit for the residential home; with the goal being energy saving steps for the house.
Project Location: Reston, VA
I would like to soundproof a small room in my basement (12 feet x 7 feet) so that I can use it as a music studio.
Project Location: Reston, VA
Additional cellulose in attic ~1000sf. and fill wall cavities of knee wall along foundation.
Project Location: Reston, VA
Need attic insulation
Project Location: Reston, VA
INterested in finding a company to provide foam insulator as a sound absorbing/buffing solution.
Project Location: Reston, VA
Our lowest level room is freezing in winter. If there is any exisiting insulation in the walls - its terrible. Not sure if you can do the injection process if there is any existing insulation though.. Would appreciate an estimate- Im contacting two others that do this work as well. Thanks
Project Location: Reston, VA
We would like to have the attic looked at to see if it would be possible to add spray foam insulation as well as adding flooring to the attic so that we can use it for storage. We currently have loose insulation, our master bedroom is never the same temperature as the rest of the house.
Project Location: Reston, VA
Main concern is insulation in the upstairs level of our townhouse. There are temperature differences compared to the rest of the house, based on weather.
Project Location: Reston, VA
Interested in adding insulation to attic. In addition to insulation, need any openings sealed. I don't have problems with rodents or insects (ie, carpenter ants) but my neighbors do! Townhouse built in 1976, about 1400 sq ft. Existing insulation appears to be cellulose with a few bates thrown about.
Project Location: Reston, VA
I would like to better insulate the crawl space in my house. My neighbor with identical layout is also interested.
Project Location: Reston, VA
Insulation in cantilever bays; insulation in lower level; re-evaluation of attic for cooler temperatures in summer; estimates for doors and windows
Project Location: Reston, VA
I have a house tgat is very open. Sound travels. I would like 3 bedrooms soundproofed from main living area.
Project Location: Reston, VA
I moved into a town home that I suspect could be more efficient.
Project Location: Reston, VA
Moving in to an older home I bought and concerned about HVAC infrastructure, overall insulation, air leakage, and crawlspace.
Serving the following Reston, VA zip codes
20190, 20191, 20194, 20195, 20196, 22096

our service area