Contact Us For
A Free Estimate!
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 Alexandria
Knee-Wall Spray Foam-Alexandria, VA

Knee-Wall Spray Foam-Alexandria, VA

Before After
Knee-Wall Spray Foam-Alexandria, VA Knee-Wall Spray Foam-Alexandria, VA

There were severs drafts coming through the knee-walls of this Alexandria, VA home. Comfenergy used closed cell spray foam to air seal and insulate them to stop these drafts. 

Thermax in knee-wall-Alexandria, VA

Thermax in knee-wall-Alexandria, VA

Before After
Thermax in knee-wall-Alexandria, VA Thermax in knee-wall-Alexandria, VA

This Alexandria, VA home had a tremendous amount of air drafting through the knee-wall/storage space.  Comfenergy used Thermax foam boards to air seal and insulate them. Thermax is used in storage areas due to its ability to also provide a fire resistant flame barrier per code.

Closed Cell Spray Foam Walls-Alexandria, Va

Closed Cell Spray Foam Walls-Alexandria, Va

Before After
Closed Cell Spray Foam Walls-Alexandria, Va Closed Cell Spray Foam Walls-Alexandria, Va

The Alexandria, VA homeowner was remodeling their home and chose to use closed cell spray foam in the exterior walls to reduce drafts and energy consumption.

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

Spray Foam Insulation, Window Replacement & Home Energy Audit Specialist in Alexandria

The salesperson did a great job!  The crew was outstanding.  They were the absolute best!...
Happy Customers Surrounding Alexandria, VA
Work Requests

Click the icons to see what our customers had to say.

Reviews From Alexandria
Testimonials From Alexandria
Excellent job. All the men were helpful and professional.
Testimonial by Lynn S. from Alexandria, VA
Ismael was extremely professional throughout...
Testimonial by Jerome T. from Alexandria, VA
This was also the only company of four that gave an appraisal that provided health and safety information on the product and how ventilation should be...
Testimonial by James S. from Alexandria, VA

Home Insulation & Energy Audit Contractor Serving Alexandria, VA

Comfenergy is Alexandria'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! You'll receive the maximum energy and cost-saving results with 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 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!

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 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:

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 Include:

  • Provides both insulation and air sealing; air sealing is excellent because the foam expands to fill gaps and cracks.
  • High R-value -about R-7 per in. depending on the formulation.
  • Speedy installation. Foaming can be done in a fraction of the time it takes to cut, fit, and seal rigid board insulation.
  • Once cured, spray foam insulation stays in place; it won't shift, settle, or fall out of place.

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 technique available in Alexandria

  • Blown-in Insulation
  • Blown Fiberglass Insulation
  • Radiant Barrier
  • Rigid Foam Insulation

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 Alexandria 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 Alexandria, 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 Alexandria
Cold walls and drafty areas were the complaint of this Alexandria, VA homeowner. A full evaluation of the drafty section of the home revealed...
This homeowner had a list of issues they wanted to have solved by Comfenergy. Their floors were cold in the winter, the first floor was drafty, and...
This Alexandria, VA homeowner had high utility bills, and the top floor was hot in the summer, and cold and drafty in the winter. Comfenergy...
News & Events From from Alexandria
Comfenergy teamed up with Home Services Solutions Group and Operation Homefront Mid-Atlantic to help a military family in need.... [Read more]
Work Requests From Alexandria, VA
Montrose St in Alexandria
We feel that our home is losing lots of heat due to poor insulation and bad doors. We'd like to get a comprehensive audit of how our home is wasting energy.
East Walnut Street in Alexandria
I have an older home (1920's build) with a master suite addition (est 1990). In the master suite the floors and in turn, the entire suite get cold in the winter. I'm interested in a free quote to insulate the crawlspace beneath the floor of the addition to alleviate the temperature fluctuations. Thanks!
Prince Streer in Alexandria
We recently moved into our new house (built 1977) and it's obvious that air is seeping into the house through the crawl space. We'd like an assessment of what we can do to better insulate our home. Thank you!
Jewell Ct in Alexandria
I need to get insulation in my attic. I've been given a quote for several things like a ridge vent and now I can't remember the other items. I would like to get a few more quotes before choosing a company.
W Glebe Rd in Alexandria
Would like someone to check to see where leaks in previously complete work are. Or if there are leaks coming from somewhere else. There is a draft coming from a few different places. In particular, the wall next to the front door, the wall (outlet) next to the back door, and inside the knee wall upstairs. Thank you!
Park Terrace Dr. in Alexandria
Rooms over the garage are cold and drafty. We want to insulate the space between the garage ceiling and rooms above. There is space as the suds running from front to back of the house. The garage has a finished ceiling so I would like to get this space insulated without ripping out the ceiling, possibly through holes. Can you let me know if this can be done and the price to so?
Colfax Avenue in Alexandria
I would like to air seal my attic, and possible add extra insulation.
Chickawane Court in Alexandria
I am looking for ways to improve the energy efficiency of our home.
Bracey Lane in Alexandria
Kitchen floor (wood)is very cold thinking insulation below is nonexistent
Memorial St in Alexandria
I have a renovated attic in a home I rent out in Alexandria that I will be moving back into later this year. The temperature can be very cold or hot, and I'm wondering if better insulation would help, how it would need to be applied, and a rough estimate of the cost. Thank you in advance for your information.
Hershey Ln in Alexandria
This person has filled out the Star Power Pro survey on that you sent them and is interested in another service you provide: heating & cooling. Please contact them to schedule a new appointment for this service. This is a no-charge lead.
Rollins Drive in Alexandria
I'm looking for an estimate on installing insulation in my finished basement to improve energy efficiency and insulate piping without removing the existing dry wall.
N Armistead Street in Alexandria
In my family room space there is no insulation and its causing my downstairs area to cool and also cool the house.
Van Valkenburgh Ln in Alexandria
I have a wall between two bathrooms that would benefit from sound insulation.
Vernon View Drive in Alexandria
Duct in crawlspace is detached.
Hershey Ln in Alexandria
I purchased a home with a converted garage. The room feels very cold in the winter and gets very warm in the summer. I would like to determine if the walls are insulated. If not, I would like a quote to add insulation. THANKS!
Croton Drive in Alexandria
2 story addition 800 sq ft. crawl space and attic needs Insulation I have most of the remodel complete and plans on site for the addition. we also have digital plans
Heritage Lane in Alexandria
Blown-in attic insulation. Cool down attic.
Queen St in Alexandria
Need to replace windows - wood windows only. Time is critical and looking to get them asap
Charles Ave in Alexandria
Insulation on the walls in the laundry room seem moldy. Interested in getting it redone
Serving the following Alexandria, VA zip codes
22301, 22302, 22303, 22304, 22305, 22306, 22307, 22308, 22309, 22310, 22311, 22312, 22313, 22314, 22315, 22320, 22331, 22332, 22333, 22334, 22350

our service area