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Reviews From Alexandria City County
Products & Services
Basement Repair Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement To Beautiful Pre-finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back Up
Sanidry Dehumidifier

Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapor Barriers And Liners
Turtl Access Hatch
EverLast Crawl Space Doors
Sanidry Csb Dehumidifier
SmartDrain Water Drainage
SilverGlo Wall Insulation
TerraBlock Floor Insulation
SmartSump Sump Pump
Crawl-o-Sphere Crawl Space Fan
WallCap Block Wall Sealer
SmartVent Flood Vents

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 City County
Basement Spray Foam-Alexandria, VA

Basement Spray Foam-Alexandria, VA

Before After
Basement Spray Foam-Alexandria, VA Basement Spray Foam-Alexandria, VA

Closed cell spray foam was used to insulate the exterior walls of this basement remodeling project in Alexandria, VA.

Crawl Space Access-Alexandria, VA

Crawl Space Access-Alexandria, VA

Before After
Crawl Space Access-Alexandria, VA Crawl Space Access-Alexandria, VA

This before/after picture series shows an "Everlast" crawl space access door that we install during a crawl space encapsulation. It's made of polypropylene plastic so its durable and will not rot away. It's installed with weatherstriping and hand tightened wing nuts keep it in place and air tight.  Easy to remove and light weight too. 

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

The following before/after pictures are from a knee-wall in Alexandria, VA that we encapsulated with closed cell spray foam.  This made the top floor warmer in the winter, and cooler in the summer....plus lessens draftiness on this level of the home.

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

Alexandria City County's Leading Home Insulation Contractor

Ismael was extremely professional throughout......
Happy Customers Surrounding Alexandria City County, VA
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Spray Foam, Attic & Crawl Space Insulation Experts Proudly Serving Alexandria City

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 Alexandria City.

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 Alexandria City, 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 City County
Encapsulating
This Alexandria, VA homeowner had done their homework on our web page. They learned how a vented crawl space can make floors warmer, lessen wintery...
Serving the following Alexandria City County, VA zip codes
Alexandria 22301, Alexandria 22334, Alexandria 22311, Alexandria 22331, Alexandria 22302, Alexandria 22350, Alexandria 22313, Alexandria 22332, Alexandria 22304, Alexandria 22314, Alexandria 22333, Alexandria 22305, Alexandria 22320

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