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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 Mc Lean
McLean VA Encapsulating HVAC Ducts with Spray Foam

McLean VA Encapsulating HVAC Ducts with Spray Foam

Before After
McLean VA Encapsulating HVAC Ducts with Spray Foam McLean VA Encapsulating HVAC Ducts with Spray Foam

Conditioned air (Heated or Cooled) passing through HVAC ducts can be impacted by the temperature in the area the HVAC ducts are located.  Imagine 60 degree air passing through an HVAC duct.  If that duct goes through an attic in the summer the temperatures in the attic can reach as high as 120 degrees.  Cold air + hot metal HVAC duct = condensation.  It also means that cold air gets heated by the time it passes all the way through, making your home less comfortable than intended and causing your HVAC system to work harder.  The same is true in reverse during the colder months.  Spray Foam can be used to encapsulate HVAC ducts, keeping the conditioned air inside the way it was meant to be.  

McLean VA Attic Insulation Panels

McLean VA Attic Insulation Panels

Before After
McLean VA Attic Insulation Panels McLean VA Attic Insulation Panels

This home in McLean had a very unique design with the ceiling running at different heights and levels from one room to the next.  This resulted in an attic space unlike most.  The attic had points that would allow for an adult to stand up and other areas that were barely tall enough for a child to crawl through.  There was also a wall that was straight up and down and shared its opposite side with the outside of the home.  This all resulted in having minimal ability to use traditional bat rolled insulation or even blown in cellulose insulation with an effective result.  Our Home Performance Sales Pro Jon was able to recommend an attic project using Silver Glo insulation panels and Zyp Foam to make it all work.  

Fiberglass Upgrade to Cellulose

Fiberglass Upgrade to Cellulose

Before After
Fiberglass Upgrade to Cellulose Fiberglass Upgrade to Cellulose

This home in West McLean, VA had some attic insulation, but it was old, damaged fiberglass. The lack of proper insulation, especially during the hot summer months, was causing uncomfortable temperatures on the third floor as well as sweating duct work that was causing water damage. Luckily, Comfenergy has the perfect solution for this situation!

We removed the old insulation and made sure any points of air penetration were sealed. Then, we installed a blown-in cellulose insulation solution. 

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

Responsible Home Insulation, Energy Audit & Window Replacement Contractor Serving Mc Lean

Ariel, Anthony, and Mike were awesome! ...
Happy Customers Surrounding Mc Lean, VA
Work Requests

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Reviews From Mc Lean
Testimonials From Mc Lean
Mike was thoughtful and thorough - great job!
Testimonial by James S. from McLean, VA
Shayne was great with me and helped me with all the pricing options. Anthony was great in being flexible...
Testimonial by Cecilia D. from McLean, VA

Home Insulation, Window Replacement & Energy Audit Contractor Serving Mc Lean, VA

Comfenergy is McLean, Virginia's home energy expert and proud member of the nationally recognized Dr. Energy Saver network. The network is comprised of certified energy-conservation specialists across the United States and Canada. Comfenergy’s objective is to provide homeowners with the best solution for improving their home’s efficiency and comfort. Your HVAC system has the potential to run at 100% efficiency, providing you with substantial cost savings and a comfortable home. However, if you ever hired a contractor that provided a “single-solution” for improving your home’s HVAC system performance, you may have been short-changed. Comfenergy conducts a thorough home energy evaluation to determine the EXACT problem with you home and will provide a permanent fix. There is no risk, our home energy inspections are FREE!

Home 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 with out 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 efficiency which will save you money. 

We offer a wide variety of home insulation products and services, and each one serves it's 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:

  • Rigid & Spray Foam
  • Air Sealing
  • Attic, Basement & Crawl Space Insulation
  • Cellulose Insulation
  • Radiant Barrier Insulation
  • Blown-In Insulation

Window & Door Replacement

Are your home's windows and doors in need of being replaced?  If so the experts at Comfenergy can help.  We are Mc Lean's trusted window and door replacement contractor.

More often than not, your home's windows are the source of all of your air leaks and drafts. To combat this, we replace your old, inefficient windows with high-quality Low-E glass windows. Low-e glass windows are more energy efficient than standard glass windows.  Some of the benefits of Low-E glass windows are that they block most ultraviolet (UV) radiation with helps protect your home's interior surfaces.  Also, Low-E glass windows have a reduced amount of condensation.

There is a reason old wood exterior doors have largely been replaced. That is because newer models, clad with steel, vinyl, or fiberglass are more energy efficient, durable, and beautiful, made to look like real wood but will last longer and save you more money. Our exterior doors can be customized to suit your home's unique style and tightly installed to provide maximum energy efficiency and to ensure long-lasting durability.

If you need to replace your home's old, inefficient windows and doors, contact us today for a FREE replacement quote!

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 Mc Lean 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 your 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 Mc Lean, 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 Mc Lean
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...
This McLean, VA home wanted to upgrade their attic insulation value, but not lose any storage space. During the Comfenergy evaluation the home showed...
Work Requests From Mc Lean, VA
Project Location: Mc Lean, VA
Need a new attic fan. Also attic above garage is connected to one of our kids room and needs to be looked at from insulation perspective
Project Location: Mc Lean, VA
Bedroom noise from Dolley Madison BLVD
Project Location: Mc Lean, VA
Attic insulation
Project Location: Mc Lean, VA
We hear everything from room to room in our house. Was wondering if you do interior wall insulation.
Project Location: Mc Lean, VA
The home is chill and the floors are chill.
Project Location: Mc Lean, VA
Need estimate to add blown insulation into our attic space.
Project Location: Mc Lean, VA
Around the main doors there is a breeze that enters the house. there are other areas that seem too cold and have air movement that is cold.
Project Location: Mc Lean, VA
Would like a quote for garage insulation, bedroom above garage is cold in winter
Project Location: Mc Lean, VA
Need spray foam all exterior walls and roof spray foam insulation.
Project Location: Mc Lean, VA
Install baffles in attic
Project Location: Mc Lean, VA
Persistent high humidity on top floor of the house. During summer months, the main floor is comfortable, the upper floor has high humidity (sometimes up to 80%), and the attic has even higher humidity.
Project Location: Mc Lean, VA
Replace attic insulation due to mice
Project Location: Mc Lean, VA
Insulation of attic.
Project Location: Mc Lean, VA
Very high gas and electricity bills.
Project Location: Mc Lean, VA
Looking for consultation on sound proofing options. Very loud airplane noise.
Project Location: Mc Lean, VA
We want to add more insulation into our attic.
Project Location: Mc Lean, VA
Two attic house with old insulation
Project Location: Mc Lean, VA
Looking for estimate on drill and fill (or other) insulation in finished wall between two interior bedrooms for noise transmission reduction. Wall is 9x13' Thank you
Project Location: Mc Lean, VA
Looking to insulate and enclose space above garage. There is little/no insulation above garage and very little insulation between garage and second floor rooms.
Project Location: Mc Lean, VA
Hi, I'd like to clean out my existing insolation and put in new ones. Thanks, Irene
Serving the following Mc Lean, VA zip codes
22101, 22102, 22106, 22107, 22108, 22109

our service area