About Us

John LeVan, Owner
Comfenergy, in Sterling, Virginia, prides itself in "creating a comfortable, energy-efficient, healthy home, and work environments by providing value through people, products, and processes". In over ten years of existence, 22 awards were given including, the 2020 #1 Dealer in the Network Award. This locally owned business offers insulation services, soundproofing, basement & crawl space services, home energy audit, and windows & doors inserts.
Services Provided
Company Highlights
- In business since 2013
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Frozen Pipes in Ashburn, VA
The homeowner in Ashburn called, as last year their pipes froze and they did not want that to happy again.This home i has always had issues with hot and cold spots, and freezing pipes in the winter. We found cold air in the master bedroom attic to be getting around the batt insulation leading to the bathroom above. This entire neighborhood of as notorious drafts and hot/cold spots. These homes have also dealt with many frozen water lines. The water lines were freezing almost 20 feet from the exterior of the home! Comfenergy installed 4" thick SilverGlo foam boards with heat reflective barrier on the attic walls.
Problem solved!!! Foam board insulation in an attic keeps the cold air from travelling beneath the bathroom tub and the pipes from freezing.
The homeowner will be more comfortable in the Summer and Winter.....but it lessened the draftiness of the home, and the pipes don't freeze any more!!!
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Increasing R-Value
This home was having comfort issues on their top floors in the summer. Our solution was to increase the R-value by installing cellulose insulation and air sealing their attic.
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Ashburn VA Cantilever gets spray foam to help insulate
This Ashburn VA home had an uninsulated cantilever. The external temperatures were impacting the condition and comfort in the room above. We removed the base board of the cantilever on the outside of the house and filled the cavities with spray foam to insulate and air seal. This will help to keep outside temperatures out and inside feeling the way the homeowner would like it to.
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Ashburn Va Attic Wall Insulation
This Ashburn VA attic underwent a full transformation. After our Home Performance Sales Pro performed a no cost inspection of the home, it was determined that the attic space would benefit from air sealing, blown cellulose insulation and panel insulation used on this wall that was facing the sun for most hours of the day and required additional attention to be properly insulated. The existing wall panel insulation was insufficient and was not air sealed. Our production team installed the SilverGlo insulation panels and used ZypFoam to seal up the cracks in between. This helped to create the best result to help improve the comfort ii the home and reduce the energy costs related to heating and cooling the home.
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Ashburn VA Attic Hatch Platform and Insulation
This Ashburn VA home had a need for a full attic insulation project. The rooms in the home below the attic were uncomfortable, the attic was not air sealed and the existing insulation in the attic was not performing as needed. Our Home Performance Sales Pro Jon recommended removal of the old insulation so that our production team could air seal the attic floor and then blow in Tru Soft cellulose insulation. Additionally Jon added the production and building of an attic landing where the access hatch to the attic was. This would allow for people to access the attic and stand on the platform with a barrier between the insulation. A hatch cover was installed with a zipper seal to keep conditioned air from escaping the rooms in the living areas below the attic. Our production team constructed this and helped to create a more comfortable home and more accessible attic for the home owners.
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Ashburn VA Attic Insulation, Air Sealing and Energy Reduction
This Ashburn VA home was the recipient of a whole attic systems project. Removal of old insulation, air sealing using Zyp Foam, foam paneling used to cover several HVAC exchange boxes and Tru Soft cellulose insulation blown in to to cover it all. This will all help to reduce the energy cost it takes to heat and cool the home year round and make the home more comfortable for the owners. pictured here BEFORE is the attic with its original insulation and no air sealing below. The AFTER photo shows the old insulation removed and Zyp Foam having been used to seal all of the gaps and cracks where conditioned air had been able to leak from the home below.
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Ashburn VA Attic Chimney Wrap and Insulation
This Ashburn VA home was uncomfortable to the homeowners throughout different times of year. They called us to see if we could help find a solution, which included a full attic project made up of air sealing, can light covers, insulation and having the chimney pipe wrapped and insulated with rock wool and spray foam.
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Ashburn VA Attic Wall Spray Foam
This Ashburn VA home had a room over its garage that shared walls with a partial section of the attic. The homeowners called us to try and help make that room and other areas of the home more comfortable. Our team air sealed the space with Zyp Foam before blowing in more Tru Soft cellulose insulation. There was a small wall section of the attic with framing that created blocks of open space. Our team used Spray Foam to insulate those blocks and finish the project.
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Spray Foam Garage Ceiling-Ashburn, VA
This Ashburn, VA had rooms over the garage that were too hot in the summer. This is can often be caused by fiberglass batts installed by the builder in the ceiling of the garage. They fall away from the sub-flooring depleting all thermal insulating value. This customer decided to remove the entire garage ceiling and use closed cell spray foam to fix the problem.
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Ashburn VA Attic Wall Panel Insulation
This home in Ashburn VA had several issues that the homeowner wanted to address, one of which was to make the upper level loft of the home more comfortable year round. Our Home Performance Sales Pro Eric determined that this could be done by improving the insulation in the attic. While the attic already had some blown in cellulose insulation covering the attic floor, the walls of the attic were poorly treated and were allowing cold temperatures and air to move into the space. Eric suggested adding another 6 inches of insulation and to have Silver Glo panels installed on the walls of the attic. The panels were then air sealed with Zyp Foam to properly protect the space from unwanted air flow.