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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

Dedicated Home Energy Audits & Insulation Contractors in Fairfax County, VA

Happy Customers Surrounding Fairfax County, VA
Work Requests

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Reviews From Fairfax County
Testimonials From Fairfax County
The crew was professional and friendly. They worked well and efficiently and took care to explain all steps and clean up after.
Testimonial by Andrew S. from Herndon, VA
The crew was very professional, always on time, polite, and cleaned up after each day. The leader explained everything well and always gave a good summary at...
Testimonial by Neil D. from Vienna, VA
Detailed explanations and regular check ins during work were greatly appreciated!
Testimonial by Anneke C. from Vienna, VA

Spray Foam, Attic & Crawl Space Insulation Experts Proudly Serving Fairfax County, VA

Comfenergy is an 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! You'll receive the maximum energy and cost-saving results with least amount of hassle.

Spray foam, Attic, Crawl Space, & Blow in Insulation in Fairfax County.

We offer FREE estimates for the following services:

  • Complete Home Energy Audit
  • Insulation
  • Crawl Space Repair
  • Sealing Air Leaks
  • Radiant Barrier Installation
  • Window replacement
  • Ductwork 

Get your FREE, no-obligation services estimate in Fairfax County, VA, 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 Fairfax County
This McLean, VA homeowner had recently purchased the home and was gutting the entire interior to have it remodeled. Their desire to have the most...
This McLean, VA homeowner had a covered porch (uninsulated) and they were converting it into a sun room they wanted to use all year round. It needed...
Choosing the right general contractor is VERY important. Many general contractors build sun rooms like this but few offer a package that will make...
Job Stories From Fairfax County, VA
Tight 'N True Duct Encapsulation

Our patented product, Tight 'N True duct encapsulation system, provides airtight insulation coverage. It provides extra sealing to the existing duct wrap, delivering airtight protection and heat resistance. It enhances the effects of your insulation, optimizes your energy usage, and lowers utility bills. 

Some benefits of duct encapsulation include: 

- Superior R-value per inch

- Recovers insulation value from existing duct insulation

- Highly efficient with performance enhancing add-ons

To maximize the insulation performance, the Tight 'N True system can be combined with our TruSoft blown-in cellulose insulation. The cellulose insulation heavily guards and covers the ducts, resulting in even more energy-saving and home performance capabilities. 

Tight 'N True Duct Encapsulation - Photo 1
Radiant Barrier for Comfort and Storage

A radiant barrier should always be a part of a home's insulation system. It functions to reduce temperatures in the attic by reflecting heat away. Radiant barriers are installed around the joists, roof beams, and wall studs - when combined with other insulation services, your attic can become a conditioned space. 

Besides comfort, installing a radiant barrier can allow you to use your attic for storage, because the heat will no longer damage your belongings. Radiant barriers can lower attic temperatures by up to 30 degrees. An insulated attic will also keep humidity lower, preventing moisture or mold damage to your things as well. 

Work Requests From Fairfax County, VA
Project Location: Fairfax, VA
We considering to change our bedroom windows for soundproof windows to block the noise coming from cars on the street
Project Location: Fairfax, VA
One of our bedrooms is too hot in the summer and too cold in the winter. Interested in the spray insulation as a possible solution.
Project Location: Fairfax, VA
Serving the following Fairfax County, VA zip codes
Alexandria 22306, Alexandria 22310, Alexandria 22307, Alexandria 22312, Alexandria 22308, Alexandria 22315, Alexandria 22303, Alexandria 22309, Annandale 22003, Burke 22015, Centreville 20120, Lorton 22079, Springfield 22153, Mc Lean 22101, Reston 20191, Springfield 22152, Centreville 20121, Springfield 22150, Mc Lean 22102, Chantilly 20151, Fairfax Station 22039, Great Falls 22066, Oakton 22124, Reston 20190, Springfield 22151, Reston 20194, Herndon 20170, Herndon 20192, Herndon 20171, Fairfax 22033, Fairfax 22031, Fairfax 22032, Fort Belvoir 22060, Vienna 22180, Vienna 22181, Vienna 22182, Falls Church 22042, Falls Church 22043, Falls Church 22044, Falls Church 22041, Dunn Loring 22027, Clifton 20124, Greenway 22067

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