Service Areas
Window and Door Replacement Across Northern Virginia
Home Exteriors Energy Consultants is a family-owned company in Leesburg that replaces windows, doors, siding and roofs for homeowners across Northern Virginia. Loudoun County is our core market, and we also work throughout Fairfax County and in select Maryland communities.
Wherever you live, the owner comes to you for a free, no-pressure estimate, often within one day.
One Family, Every Town
The Same Owner and the Same Crews, Wherever You Live
Mark Horner founded Home Exteriors Energy Consultants in 2007, and he still meets every homeowner personally. Whether your home is in Leesburg, Reston or Potomac, the person who walks your house and talks through replacement windows or a new entry door is the owner, not a salesperson who hands you off. His son Hadley runs scheduling, production and customer service, and he visits after the job to make sure everything is exactly right.
Our installers are certified directly by ProVia, and we have worked with the same crews for more than a decade. So the care that goes into a job in one town is the same care that goes into the next.
Where We Work
Towns We Serve
Choose your town to see how we help homeowners there with windows, doors, siding and roofing.
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Leesburg, VA
Leesburg is home for Home Exteriors Energy Consultants, and our showroom is right here in town.
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Ashburn, VA
When you call about new windows for your Ashburn home, you deal directly with the owner from the first estimate to the final walkthrough.
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Lansdowne, VA
From the Lansdowne golf community to River Creek, we replace windows and doors for Lansdowne homeowners with ProVia products and the same certified crews we have trusted for more...
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Sterling, VA
Sterling homeowners can usually have a free window and door estimate within one day.
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Potomac Falls, VA
We replace windows and doors throughout Potomac Falls, including the Cascades and Countryside communities and the Trump National golf community.
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Gainesville, VA
As a Certified ProVia Dealer, we bring ProVia's full lineup of replacement windows and doors to Gainesville homeowners, with up to 30% off ProVia products.
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Round Hill, VA
One team can take care of the whole outside of your Round Hill home: windows, doors, siding and roofing.
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South Riding, VA
Most of our South Riding window and door projects are completed within two to four weeks of signing.
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Reston, VA
Energy-efficient replacement windows can make your Reston home more comfortable and help lower your energy costs.
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Herndon, VA
No call centers and no handoffs: when you call about replacement windows for your Herndon home, you reach a local family that answers the phone and stands behind its work.
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Great Falls, VA
Great Falls homeowners get ProVia windows and doors, installed by certified crews and backed by a lifetime extended service warranty.
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Vienna, VA
Vienna was our home base before Leesburg, and we still serve Vienna and Tysons homeowners today.
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Mclean, VA
A new front door or a full set of replacement windows can change how your McLean home looks and feels.
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Chantilly, VA
Much of our business comes from repeat customers and referrals, and we work to earn both in Chantilly.
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Potomac, MD
Our work reaches beyond Northern Virginia into select Maryland communities, and Potomac is one of them.
Getting to You
How Far We Travel, and Where to Find Our Showroom
Our home base is Leesburg, and Loudoun County is where most of our work happens, from Leesburg and Ashburn to Sterling, South Riding and Round Hill. We also serve Fairfax County, including Reston, Herndon, Great Falls, Vienna, McLean and Chantilly, along with Gainesville and select Maryland communities such as Potomac. If your town is not listed, give us a call at (703) 242-1750 and ask.
Our showroom is in Leesburg, with windows, doors and color samples you can see and touch before you decide. We are open Monday to Friday 9 AM to 5 PM, Saturday by appointment, and closed Sunday. You can also read what homeowners say on our reviews page or learn more about our family.
Free Estimate
Schedule Your Free Estimate
Tell us a little about your home and your project, and we will set up a time for Mark to meet with you, often as soon as the next day.
- Lifetime extended service warranty on windows and doors
- Lifetime Glass Repair Warranty for River Creek, Belmont, Riverbend and Trump National
- Most projects completed within two to four weeks of signing