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1-800-604-2252
Virginia Class A BLD License #2705151837

maximize your home's
comfort and increase
your monthly savings!

INSULATION • AIR SEALING
WINDOW REPLACEMENT

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Home Energy Audit & Spray Foam Insulation Experts Serving NOVA.

Providing home insulation and window replacement services to greater Sterling, Ashburn, Leesburg

 Why Choose Us?

A New Approach to Solving Home Comfort and...

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Comfenergy specializes in improving homes with quality, energy-efficient solutions. As Nova's energy specialists and local Dr. Energy Saver contractor, we offer a variety of energy-saving services, including home insulation upgrades, windows replacement and home energy audits.

Our focus is on helping Virginia homeowners improve the comfort level within their home, as well as reduce wasted energy and high energy costs without spending a fortune on a single solution that might not do the job. 

The benefits of an energy efficient home

Comfort Triangle

The Comfort Triangle. The integrity of your building envelope along with the operational efficiency of your HVAC system and the quality of your duct work all contribute to your home's comfort and efficiency.


Our Services

Attic Insulation

Upgrading attic insulation can significantly improve comfort & energy efficiency.

Spray foam insulation can improve comfort & energy efficiency by insulating and air sealing

The first step in making your home more comfortable and energy efficient is upgrading your insulation and looking for places conditioned air can leak out.

Ductwork

Improve the performance of your HVAC system with properly sealed and insulated ducts.

Sealing air leaks can help insulation perform like it should

Improve comfort, energy efficiency & air quality throughout the home with this important insulation upgrade.

Replacement Windows in Virginia

As critical components of a home's "building envelope," replacing old windows with energy efficient options not only works better, but looks better as well!

Free Insulation Estimates In Virginia

We provide free evaluations and estimates for all of our home insulation services!

Start Living Comfortably for Less: Schedule an Audit

Schedule a Free Estimate

Call us at 1-800-604-2252 or contact us online to schedule a repair estimate or comprehensive home energy assessment in Ashburn, Sterling, Leesburg and nearby areas throughout Virginia. We also service Lovettsville.

How can we help improve your home?

Many home improvement companies attempt to address home energy problems without finding the root cause. Problems like poor air quality, high energy bills, and an uncomfortable home could be the result of leaky ductwork, inadequate insulation, or equipment that is the wrong size or was installed incorrectly.

If you are unsure of where to start or what's causing your home energy problems, you will likely benefit from our custom home energy audit. Our energy assessments involve testing and inspecting the systems in your home - we check everything from air leakage and insulation levels, to the efficiency of your heating & cooling system, replacement windows, and more.

We are more than just an energy audit company. Comfenergy identifies home energy problems and provides the right solutions. Comfort and energy efficiency issues can be caused by a number of different problems. We can help eliminate the guesswork. Our customized home energy assessment is the first step to uncovering the exact causes of your comfort problems or high utility bills.

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Uncomfortable Homes Fixed

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How does an energy assessment work?

When you schedule a home energy audit with Comfenergy, our certified home energy specialists use state-of-the-art equipment to pinpoint exactly where your home is losing energy. You will then be given a detailed list of suggested improvements. Comfenergy’s experts will help you choose the most important improvements based on your comfort and energy efficiency goals. Once you select the improvements you want, our crew will perform the upgrades.

We fix uncomfortable, energy-hogging homes in VA

Upgrade Home Insulation for Fast Energy-Saving Results

Adding insulation is one of the easiest ways to lower heating and cooling costs and make your home more comfortable. We install a variety of insulation materials: spray foam, cellulose, radiant barriers, and more; and all of which can help:

  • Stop air leaks
  • Control moisture
  • Maximize insulation's heat resistance (R-value)
  • Reduce the demand on your heating & cooling system

Learn more about our insulation services.

An energy assessment performed by a certified home energy specialist can ensure that your home is as comfortable and energy efficient as possible. Don't waste money on upgrades that you don't need.

With our home energy audit, we can help identify which repairs and upgrades will make the biggest difference in comfort and energy efficiency and will provide the biggest return on your investment!

We provide a free quote for home energy improvements like insulation upgrades, sealing air leaks, replacing your old windows, sealing leaks in ductwork and more.

We work throughout the Nova area of Virginia, including Sterling, Ashburn, Leesburg, Great Falls, Reston, Herndon, Vienna, Middleburg, Purcellville, Waterford, and Lovettsville. Check out our service area to see if we work near your home.

Looking for a price? Get a no cost, no obligation free estimate.

Serving VA including the Greater Sterling area
Our Virginia Service Area
Ashburn

Cities in Alexandria City County, VA
Alexandria

Cities in Arlington County, VA
Arlington
Fort Myer

Cities in Clarke County, VA
Berryville
Bluemont
Boyce
Paris
White Post

Cities in Fairfax County, VA
Alexandria
Annandale
Burke
Centreville
Chantilly
Clifton
Dunn Loring
Fairfax
Falls Church
Great Falls
Greenway
Herndon
Mc Lean
Oakton
Reston
Springfield
Vienna

Cities in Fairfax City County, VA
Fairfax

Cities in Falls Church City County, VA
Falls Church

Cities in Fauquier County, VA
Broad Run
Delaplane
Hume
Markham
Marshall
The Plains
Upperville
Warrenton

Cities in Frederick County, VA
Middletown
Stephens City
Winchester

Cities in Loudoun County, VA
Aldie
Ashburn
Chantilly
Hamilton
Leesburg
Middleburg
Paeonian Springs
Philomont
Purcellville
Round Hill
Sterling
Waterford

Cities in Manassas City County, VA
Manassas

Cities in Prince William County, VA
Bristow
Catharpin
Gainesville
Haymarket
Manassas
Nokesville

Cities in Warren County, VA
Front Royal
Linden
Middletown

Cities in Winchester City County, VA
Winchester

Cities in Jefferson County, WV
Charles Town
Harpers Ferry
Ranson
Summit Point

Our Locations:

Comfenergy
100 Glenn Dr STE A-1
Sterling, VA 20164
1-571-659-6059
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Smart Financing Financing From Comfenergy
Comfenergy Credibilites
IICRC ASQ Loudoun County Chamber of Commerce IAQ