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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

Before and After Pictures from Mc Lean
Basement Floor Insulation in Mc Lean, VA

Basement Floor Insulation in Mc Lean, VA

Before After
Basement Floor Insulation in Mc Lean, VA Basement Floor Insulation in Mc Lean, VA

Sleepers and Subfloor were installed above concrete slab in a Mclean Home.

Fiberglass batts had been installed but were ineffective and drafty.  We used injection foam to fill these floor cavities above the slab with foam to air seal and insulate the floor system. 

Here you can see holes drilled on one side of the room that were the areas where we inserted the foam.  Outlet holes on the other side of the room were used as outlets for the foam and demonstrated total cavity fill when foam "Squirted" out.

This home is now much more comfortable and energy efficient. 


Company Awards
Comfenergy is awarded as the Best Insulation Company in Loudoun County for 2018 by the readers of the Loudoun Times... [Read more]
Comfenergy was awarded as the #3 Dr. Energy Saver dealer for total sales in North America during the 2017 Contractor... [Read more]
Comfenergy is chosen as one of the top insulation companies by the readers of EBSCO Best Pick Reports for Fairfax,... [Read more]
More Awards

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

Ariel, Anthony, and Mike were awesome! ...
Happy Customers Surrounding Mc Lean, VA
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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 with my dates. Jordan was very informative through...
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 Nova'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 Replacement & Installation

Are your home's windows in need of being replaced?  If so the experts at Comfenergy can help.  We are Mc Lean's trusted window 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 and 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. If you are in need of replacing your home's old, inefficient windows, contact us today for a FREE window 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 wanted to make their 2 car garage a conditioned space. They added cabinates along the back wall, and slat boards to hang...
This McLean, VA homeowner recenlty purchased a home and was gutting the entire interior to have remodeled. Their desire to have the most...
This McLean, VA homeonwer was looking for a way to make their tp floor cooler in the summer. The top floor of this home was a 4th floor "loft" of...
Work Requests From Mc Lean, VA
Kellogg Dr in Mc Lean
Need assessment and estimate for the attic, which has old insulation, and needs work.
Burford Dr. in Mc Lean
I moved into a house in November and my attic only has about 3 inches of insulation in the attic. I already have two insulation quotes to take me to R-49 insulation. your company has an excellent reputation and would like to get your opinion on what would be best for my situation.
Titania Lane in Mc Lean
I would like to get an estimate on insulating the attic in my house. Thank you!
Forest Villa Lane in Mc Lean
I would like an estimate to have 5" of spray foam insulation installed in my attic and an open wall sprayed/sealed prior to the re-installation of existing fiberglass insulation in a back wall recently replaced during renovation.
Langley Ridge Rd in Mc Lean
Requesting quote for insulation. Referred by internet. Appointment set.
Foxhound Court in Mc Lean
Estimate for the attic insulation and home evaluation Referred by google search. Appointment set
Capitol View Drive in Mc Lean
Wants home insulation for the band board in the basement. Referred by company trucks. Appointment was made.
Melrose Drive in Mc Lean
We're considering either adding insulation to our attic and/or getting an energy audit. We have a two story home and the top level is always significantly hotter than the bottom. The attic is incredibly hot so I think that is the problem. I did some research on a radiant barrier and I am intrigued, but we also lack enough insulation up there.. Bottom line is that we're looking to make the second floor more comfortable. My guess is it's due to the attic, but I'm not totally certain and therefore considering the energy audit. Please let me know what you think. Bryan
Birch Road in Mc Lean
We are interested in information about insulating an already finished basement, crawlspace and associated porch, and get pricing on optimizing our attic insulation. Please contact me (email is best) to schedule a time to discuss. Thank you.
Warbler Lane in Mc Lean
I have a Rambler build in 1957. I am interested in having insulation blown into my attic crawl space.
Snow Meadow Lane in Mc Lean
We had an energy audit of our house. We need to have attic insulation with cellulose to R-49 equivalent depth. We'd like a quote on this, please. Thanks.
Lansing Court in Mc Lean
Need spray foam under the floor of addition. Coverage area measures 12 x 15 feet
Lawton in Mc Lean
I'd like to schedule an appointment for an estimate on spray foam insulation in the basement and garage. I'm available to meet on February 16th all day or most days in the late afternoon.
Birnam Wood Drive in Mc Lean
Want an energy audit. Insulation seems weak and windows are old ....
Ivy Hill Dr in Mc Lean
Crawl Space - not sure what needs to be done. Built over sleepers. May have moisture/mold issue. Not sure about insulation.
Ingleside Ave in Mc Lean
I would like to get an estimate on insulating two crawl spaces and also upgrading the insulation in my attic.
Broad Branch Ct in Mc Lean
Need analysis of how to close drafts and save on energy costs.
Serving the following Mc Lean, VA zip codes
22101, 22102, 22106, 22107, 22108, 22109

our service area