4.59 |17 Verified Ratings
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4.59 | 17 Verified Ratings
Write a Review


45714 Oak Brook Ct.
Sterling, VA 20166
Your use of our services is governed by our Terms & Conditions


Comfenergy is a locally owned and operated comfort and energy home performance company. We specialize in residential and commercial solutions designed to improve the overall comfort, health and energy efficiency of the home or office. As a full-service home insulation contractor we start off by conducting a comprehensive home comfort and energy evaluation to identify and locate all the energy losses and weaknesses throughout your building. After the testing is complete we are able to put together a prioritized list of the most cost-effective solutions to correct comfort and energy wasting issues. From there we leave the decision making entirely up to you, letting you pick which home improvements you would like applied to your home. Our main goal is to focus on the most important needs of your building?. Why insulate the garage walls if all of your conditioned air is being lost to the attic? Give us a call today for a free, fast, and friendly quote.


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Service Area

  • Arlington
  • Alexandria
  • Herndon
  • Fairfax
  • Springfield
  • McLean
  • Vienna
  • Reston
  • Falls Church
  • Dulles
  • Merrifield
  • Sterling
  • Ashburn
  • Manassas
  • Chantilly
  • Leesburg
  • Centreville
  • Middleburg
  • Purcellville
  • Hamilton
  • Haymarket
  • Oakton
  • Burke
  • Gainesville
  • Paeonian Springs
  • Aldie
  • Waterford
  • Lincoln
  • Philomont
  • Dunn Loring
  • Greenway
  • Great Falls
  • Catharpin
  • Annandale
  • See All >

Services Offered

  • Waterproofing Foundation or Basement
Home Inspection
  • Home Energy Audit
  • Blown-in Insulation Install
  • Spray Foam Insulation Install

Areas of Expertise

  • Insulation
  • Comfort and Energy Evaluations
  • Mold/Mildew Remediation
  • Window Replacements
  • Crawl Space Encapsulation

Product Brands Used

  • Dr. Energy Saver, Dow, Applegate, Lapolla, Gaco Western

Quick Facts

Business Hours
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
(Please call to confirm)
  • Small Jobs Welcome
  • Warranty Offered
  • Free Estimates
  • Materials
  • Credit Cards Accepted
  • Warranty Description: 1 year workmanship


In Business Since: 2013
Memberships & Affiliations
  • Loudoun County Chamber of Commerce, BNI, Rotary International, Better Business Bureau
State Licensing
Trade: Home Improvement Contracting (HIC)
License #: 2705151837
Expiration: 09-30-2019
Trade: Class A Contractor
License #: 2705151837
Expiration: 09-30-2019
Trade: Alternative Energy Systems (AES)
License #: 2705151837
Expiration: 09-30-2019
  • Loudoun County Service Business of the Year (2014 Finalist)
  • Loudoun County Entrepreneur of the Year (2014 Finalist)
  • Loudoun Chamber Green Business Challenge
HomeAdvisor Screened. View Details

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information or representations set forth in those profiles, as they are self-reported by the Service Professional.

HomeAdvisor verifies state-level licensing where applicable - note: some states require local or county level licensing and you should verify whether or not your pro is properly licensed.

Business Overview

Community Involvement

Loudoun Chamber of Commerece


Better Business Bureau

Rotary International

Many other non-profits

How We Got Started

I chose to work in this industry because I enjoy problem solving. I enjoy helping people solve all of those issues in their home they never knew they could have solved. Things like hot/cold spots, draftiness, cold floors, high/low humidity, mold/mildew issues, high energy bills, and much more......You name it, and we can solve it..

We started in this industry in 2010.

We describe our business as Up and coming

What makes you different than the competition?

We emphasize diagnosis of issues in the home before prescribing the solution.



My Work
3 Projects
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Ratings & Reviews

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
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Showing 1-10 of 17
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5.0   |  
Review by in Arlington, VA
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5.0   |  
Review by in Arlington, VA
Not inexpensive, but worth the cost for energy savings and efficiency. We had received a much higher bid from another company, and were glad we chose Comfenergy. The technician was very knowledgeable and we felt a great difference in our upstair master bed and bath which were uncomfortably warm prior to the improvements. Also nice now to have "green" home for resale.
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4.0   |  
Review by in Aldie, VA
Overnight winter temperatures was about 10 degrees F. The crew came that morning prepared for the cold weather. They worked hard all day and cleaned up after the work was done. The site was cleaner when they left than it was when they arrived. They were very professional.
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4.0   |  
Great sales people and technicians.
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4.0   |  
Review by in Alexandria, VA
The installer had some problems reading the order, but did reapply after checking with the manager.
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4.5   |  
Review by in Ashburn, VA
Friendly people from estimation through installation. Everyone was very thorough, especially during the initial energy audit, and the work was completed in a timely manner.
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5.0   |  
Review by in Centreville, VA
Personnel was professional and explained each step and showed me pictures of the progress.
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4.0   |  
Review by in Ashburn, VA
Very easy to work with. Their repncame out and did a free home energy audit in a timely manner. They then go over over everything they find. He walked me through everything he found. The list he came up was priced out but was definitely a little more than I wanted to spend...but he worked with me to figure out what items to fix that would give me the most bang for my buck at the cost wanted to spend. We definitely notice an improvement in the house from the fixes. I would recommend these guys.
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4.5   |  
Review by in Chantilly, VA
Very thorough audit and clear explanation of what was being done throughout process. The use of a thermal imaging unit helped to further identify locations of heat loss that I would have never suspected. Excellent service overall
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5.0   |  
Review by in Leesburg, VA
Extremely professional and conscientious about their work.
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Showing 1-10 of 17
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Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
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  4. Criminal Records Search
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  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
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  10. Identity Verification (Reverse Phone Lookup)
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NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
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