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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 Herndon
Decreased cold drafts for homeowner in Herndon, VA

Decreased cold drafts for homeowner in Herndon, VA

Before After
Decreased cold drafts for homeowner in Herndon, VA Decreased cold drafts for homeowner in Herndon, VA

This home in Herndon, VA was experiencing cold drafts this winter and found it expensive to keep their home warm.  In the attic there was very little insulation and had a low R value.  We used our TruSoft Blown-in Insulation resulting in a less drafty and more comfortable home.

New Construction Spray Foam-Herndon, VA

New Construction Spray Foam-Herndon, VA

Before After
New Construction Spray Foam-Herndon, VA New Construction Spray Foam-Herndon, VA

This wise homeowner in Herndon, VA chose to use closed cell spray foam insulation in the walls of their new home. This is a wise investment for comfort and efficiency.  Closed cell spray foam not only insulates better than fiberglass batts, it creates a great vapor barrier on the exterior walls.

Herndon, VA Attic Upgrade

Herndon, VA Attic Upgrade

Before After
Herndon, VA Attic Upgrade Herndon, VA Attic Upgrade

This home was suffering from ineffective insulation in the attic that was causing all the rooms below to become too hot in the summer and too cold during the winter. When our sales professional Carl went out to the property he performed a full home inspection and found the solution to the homeowner's discomfort. Carl explained that the best solution would be to completely replace the old ineffective blown fiberglass insulation with new TruSoft cellulose insulation and add a radiant barrier to the attic ceiling and walls. When the homeowners agreed our service crews went out to the home and got to work. They started by removing and disposing of the old fiberglass insulation. Then they applied ZypFoam air sealant to all of the potential leaks to prevent uncontrolled unconditioned air from entering the living spaces. After that, they installed the radiant barrier to the ceiling and walls as an additional layer of insulation. Finally, they installed the TruSoft cellulose insulation on the attic floor as the primary attic insulation to keep the home comfortable year round.

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

Herndon's Expert Spray Foam, Attic & Blown Insulation Contractor

This client needed some energy saving and comfort improvements for their home.  After calling and getting a free inspection and...
Happy Customers Surrounding Herndon, VA
Work Requests

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Reviews From Herndon
Testimonials From Herndon
I thoroughly reviewed your web site, looked at the various videos and understood what Dr. Energy Saver could...
Testimonial by Don P. from Herndon, VA
The crew was professional and friendly. They worked well and efficiently and took care to explain all steps...
Testimonial by Andrew S. from Herndon, VA

Home Insulation Experts Serving Herndon, VA

Comfenergy is Herndon'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

Herndon’s Trusted Window & Door Replacements

Comfenergy also offers window and door replacements for an even more beautiful and efficient Herndon 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 Herndon, 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 Herndon:

  • 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 Herndon 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 Herndon, 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 Herndon
This home had uncomfortable temperatures and owners who were suffering from allergies. Upon inspection of the home, we identified a significant...
This Herndon, VA homeowner had rodent issues in their attic. After a conversation with them, they also mentioned wanting to make the house more...
This Herndon, VA homeowner was looking to make the top floor of their home more comfortable and less drafty, yet not lose any attic storage area...
Job Stories From Herndon, VA
Herndon VA Sound and Noise Solutions with Wall Dense Packing

This Herndon VA homeowner was experiencing home comfort issues due to having different rooms in their home have different temperatures year round.  they call Comfenergy to ask for a home performance inspection.  Our sales professional Jason went out to visit and performed a free whole home assessment.  He was able to find the issue causing the comfort issues but while speaking to the homeowners they also mentioned that their home was very noisy and that they were interested in finding a way to reduce the sound that travelled through the home in hopes to have a much quieter nursery room.  Jason was able to offer our wall dense packing solution using Rock Wool insulation.  This would not only help to reduce the sound in and around the home but it would also serve to better insulate each room that was treated.   Dense packing involves cutting strategic locations in the drywall and then filling the space inside of the wall from top to bottom with Rock Wool insulation.  This is a fire safe material that greatly reduces the ability for noise and sound to travel through the walls of the home.  This home will now be quieter, more energy efficient and most of all, more comfortable.  

Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 1Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 2Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 3Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 4Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 5Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 6Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 7Herndon VA Sound and Noise Solutions with Wall Dense Packing - Photo 8
Work Requests From Herndon, VA
Project Location: Herndon, VA
I am interested in sound proofing a basement of a single family home to minimize impact and acoustic noises coming from residents living in the ground level and upper level spaces. The basement is finished.
Project Location: Herndon, VA
We have a finished basement (living space, full kitchen, dining area, bedroom, bath). A great deal of sound transfers down from the main floor into the basement. We would like to explore options for making the ceiling soundproof or at lease deadening some of the sound that is transferred between the two floors.
Project Location: Herndon, VA
I have a 100 year old house that I bought last year. I am curious about determining what I might do to improve the energy efficiency.
Project Location: Herndon, VA
Assess attic insulation and sealing to make 2nd floor more comfortable.
Project Location: Herndon, VA
HVAC technician recommended that insulation in attic be inspected to determine if work needs to be done. The upstairs is having difficulty cooling, and it is not known when the attic insulation was inspected last.
Project Location: Herndon, VA
We would like a ballpark estimate to have our old attic insulation vacuumed out and new insulation blown in that is pest resistant. The attics is about 600-700 square foot in a split level home. Your company did our crawlspace insulation project so we are returning customers.
Project Location: Herndon, VA
I just bought a house and the inspection report noted that I only have 5-6 inches of insulation in the attic crawl space when it's supposed to be 12-19 inches. I am getting quotes for how much it will cost to put more insulation in the attic.
Project Location: Herndon, VA
Attic insulation
Project Location: Herndon, VA
Evaluate drafty windows and doors. Attic insulation and give a modest quote to fix any leaks for all seasons
Project Location: Herndon, VA
I am looking to replace attic insulation; hoping to get a quote.
Project Location: Herndon, VA
Interested in getting a quote to replace the old fiberglass bat insulation in my 500 sq-ft attic with blown-in cellulose insulation. Quote should include the price of removal for the old insulation and cost of spraying in the new insulation.
Project Location: Herndon, VA
I want to insulate above my garage & put in flooring. Foaming it will probably be to expensive, so I'm looking for alternative options. Not sure if solid radiant foil will work, under slab insulation, batts, or something else. The area is approximately 21' Length x 20' width. Can you provide a recommendation & cost estimate. Thank you.
Project Location: Herndon, VA
Looking for an energy audit- think the house has leaks, low insulation, gable vents sealed. Want to see ways to improve comfort
Project Location: Herndon, VA
Seeking quote to add additional blow-in insulation in attic.
Project Location: Herndon, VA
Increase energy efficiency. House to cold in winter Assess the possibility to use my crawl space as storage area
Project Location: Herndon, VA
Need to improve home energy efficiency and reduce electric/gas costs. Also interested in an attic fan.
Project Location: Herndon, VA
Need to insulate basement and attic
Project Location: Herndon, VA
Looking for attic insulation consultation
Project Location: Herndon, VA
Hot/cold room above garage and master bedroom with vaulted ceiling. Trying to get comparative estimates.
Project Location: Herndon, VA
My single family home was built in 78 and the attic is very poorly insulated, would like an estimate to address the issue. Thanks
Serving the following Herndon, VA zip codes
20170, 20171, 20172, 20192, 22095

our service area