Service Area
Contact Us For
A Free Estimate!
Products & Services
Home Energy Saving & Audit
Energy Efficiency Audit
Energy Saving Devices
Energy Saving Products
Energy Saving Tips
Home Energy Audit
Home Energy Conservation

Home Insulation
Attic Insulation
Blown In Insulation
Cellulose Insulation
Duct Insulation
Green Insulation
Insulation Contractors
Pipe Insulation
Reflective Insulation
Rigid Foam Insulation
Roof Insulation
Spray Foam Insulation
Wall Insulation
Window Insulation

Water Heaters
Electric Water Heaters
Gas Water Heaters
High Efficiency Water Heater
Hot Water Heaters
Indirect Water Heater
Instant Hot Water Heater
On Demand Hot Water Heaters
Solar Water Heater
Tankless Water Heaters
Water Heater Installation
Water Heater Replacement

Hvac Systems
Air Conditioning Contractors
Air Conditioning Systems
Boiler Heating Systems
Central Air Conditioning
Ductless Air Conditioning
Gas Furnace
Geothermal Heating And Cooling
Heating And Cooling Systems
High Efficiency Furnace
Home Heating Systems
Hvac Companies
Hydronic Heating Systems

Air Sealing
Sealing Air Leaks
Air Duct Leakage
Air Duct Sealing
Air Leakage Testing
Door Air Seal
Window Air Leakage

Radiant Barrier
Radiant Barrier Insulation
Radiant Barrier Cost
Roof Radiant Barrier

Ductwork
Ductwork Repair
Ductwork Installation
Ductwork Cost
Furnace Ductwork
Hvac Ductwork

Replacement Windows & Doors
Anderson Replacement Windows
Best Replacement Windows
Fiberglass Replacement Windows
Home Window Replacement
Low E Glass
Low E Windows
Marvin Replacement Windows
Vinyl 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
The readers of the Loudoun Times-Mirror voted Comfenergy the best insulation contractor in Loudoun County for 2017.... [Read more]
The readers of The Luodoun Now's newspaper voted Comfenergy the best insulation company in Loudoun County for 2016.... [Read more]
The readers of The Loudoun Times-Mirror voted Comfenergy the best insulation company in Loudoun County for 2016.... [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
Testimonials
Reviews
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
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
This was the best crew to work with. THey had a very dirty job to do and did it so willingly.
Testimonial by Tanya T. from Alexandria, VA

Home Insulation, Window Replacement & 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 will do that. If you energy costs are too high, or there are areas of your home that are too cold in the winter or hot in the summer, contract 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 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 Alexandria'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 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
Hybrid
This Alexadria, VA homeowner wanted to make their top floor warmer in the winter months. "Outside the box" thinking and design by Corey Hatcher and...
Rodents-Alexandria,
This Alexandria, VA homeowner had issues with rodents in their attic. Their pest control company wanted to charge 3 times what Comfenergy was to...
Cold
The bay window area of this Alexandria, VA home was causing the master bedroom to be very cold during the winter. Thermal imaging showed no...
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
Potomac Ave in Alexandria
Crawl space spray foam estimate Approx 800-900 sq ft.
Lea Lane in Alexandria
Under insulated home.
East Abingdon Dr, in Alexandria
Soundproofing between floors for Impact noise, mostly floor squeaking.
Chieftain Circle in Alexandria
Old windows, worn out weather stripping and seals, etc.,attic insulation.
Quincy St in Alexandria
Have a small attic/crawl space that surrounds our fireplace. Current insulation in there looks old/wet and just nasty. not sure what caused, but want to replace and eradicate any other issues in that space.
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

Top