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Verified Reviews for Energy Efficiency Auditing pros in Warrenton, VA
*The Angi rating for Energy Efficiency Auditing companies in Warrenton, VA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
*The HomeAdvisor rating for Energy Efficiency Auditing companies in Warrenton, VA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
Last update on December 15, 2025
Find Energy efficiency auditors in Warrenton

Home Energy Saving Solutions
Home Energy Saving Solutions
As a Maryland certified Home Performance with Energy Star contractor, we focus on making homes efficient and comfortable. Our energy audits and energy efficiency improvements usually qualify for generous state incentives and rebates through Pepco, BGE, and Potomac Edison. Mo is the owner/operator at Home Energy Saving Solutions. He has a deep depth of knowledge and experience gained from well over 1000 energy audits. Participation in numerous industry groups and conferences further enhance the expertise brought to each home energy audit. We will inspect your entire home as a system and evaluate energy loss and comfort issues using advanced diagnostic equipment. At the conclusion of the audit you will be presented with a comprehensive report detailing all findings and solutions, along with a payback period for repair and retrofit options.
"Mohammed handled our project—sealing and insulating our attic. He was very knowledgeable about the best way to accomplish the task in an older home such as ours; and he also ensured that our project qualified for relevant energy rebates. He was professional and courteous in answering all our questions and completed the project in one day. We highly recommend HESS and Mohammed El-Goul."
Janet B on August 2024
As a Maryland certified Home Performance with Energy Star contractor, we focus on making homes efficient and comfortable. Our energy audits and energy efficiency improvements usually qualify for generous state incentives and rebates through Pepco, BGE, and Potomac Edison. Mo is the owner/operator at Home Energy Saving Solutions. He has a deep depth of knowledge and experience gained from well over 1000 energy audits. Participation in numerous industry groups and conferences further enhance the expertise brought to each home energy audit. We will inspect your entire home as a system and evaluate energy loss and comfort issues using advanced diagnostic equipment. At the conclusion of the audit you will be presented with a comprehensive report detailing all findings and solutions, along with a payback period for repair and retrofit options.
"Mohammed handled our project—sealing and insulating our attic. He was very knowledgeable about the best way to accomplish the task in an older home such as ours; and he also ensured that our project qualified for relevant energy rebates. He was professional and courteous in answering all our questions and completed the project in one day. We highly recommend HESS and Mohammed El-Goul."
Janet B on August 2024

Relax HVAC, Inc.
Relax HVAC, Inc.
Relax HVAC, Inc. is a fully insured and licensed heating and air conditioning firm in Ashburn, Virginia, composed of Master Technicians led by Kamal. He and his team provide round-the-clock emergency services for residential and commercial customers, including those in the Iranian, Arabic, and Palestinian communities. With more than 25 years of experience in providing air conditioning services, Kamal takes pride in making customers feel good about his company. He does this by giving them quality and honest services at great prices. His services are approved and recommended by the Loudoun County Fire Department.
"My AC failed and I had limited time to find a good solution, I made a phone call to Relax HVAC based on the online reviews and it was a great decision. Nasser came to check the situation, he gave a very detailed and comprehensive overview of the situation and provided with the options I had. I decided to replace the unit, Nasser went above and beyond to find a unit delivery service but there was nothing available over the weekend so this gentleman went for unit pick up himself and finished the installation within a day from my initial call. Moreover, the provided price was very reasonable.I can't be more happy with the outcome and highly recommend Relax HVAC"
Navid P on July 2024
Relax HVAC, Inc. is a fully insured and licensed heating and air conditioning firm in Ashburn, Virginia, composed of Master Technicians led by Kamal. He and his team provide round-the-clock emergency services for residential and commercial customers, including those in the Iranian, Arabic, and Palestinian communities. With more than 25 years of experience in providing air conditioning services, Kamal takes pride in making customers feel good about his company. He does this by giving them quality and honest services at great prices. His services are approved and recommended by the Loudoun County Fire Department.
"My AC failed and I had limited time to find a good solution, I made a phone call to Relax HVAC based on the online reviews and it was a great decision. Nasser came to check the situation, he gave a very detailed and comprehensive overview of the situation and provided with the options I had. I decided to replace the unit, Nasser went above and beyond to find a unit delivery service but there was nothing available over the weekend so this gentleman went for unit pick up himself and finished the installation within a day from my initial call. Moreover, the provided price was very reasonable.I can't be more happy with the outcome and highly recommend Relax HVAC"
Navid P on July 2024

BlueStar Air Mechanical Inc.
BlueStar Air Mechanical Inc.
BlueStar Air Mechanical is a call away for your repair, maintenance and installation needs. We specialize in fixing and tuning up cooling, heating and plumbing systems for both residential homes and commercial establishments.
"I contacted Bluestar Air Mechanical for a second opinion after an appointment with Air One. I have a Carrier HVAC system, and the Air One technician recommended a complete system replacement, claiming the blower was bad, the furnace control board needed replacing, and that there were other issues. Since replacing the HVAC is a big investment, I wanted to get a second opinion. It was only after comparing the service from Bluestar that I realized Air One may have been pushing for a new system sale or lacked the expertise to properly diagnose and repair the actual problems. Isaac, the technician from Bluestar, spent about an hour thoroughly diagnosing and fixing the issues. He found burnt wiring in the furnace and discovered that the wrong capacitor had been incorrectly installed in the AC. Isaac replaced the burnt wiring in the furnace and the capacitor in the AC. After these repairs, my Carrier system was back up and running—without the need for a costly replacement. Bluestar, and Isaac in particular, demonstrated professionalism, expertise, and honesty. They focused on resolving the actual issues instead of pushing for an unnecessary system replacement. I highly recommend Bluestar for their reliable service and Isaac’s thorough and knowledgeable work."
James C on October 2024
BlueStar Air Mechanical is a call away for your repair, maintenance and installation needs. We specialize in fixing and tuning up cooling, heating and plumbing systems for both residential homes and commercial establishments.
"I contacted Bluestar Air Mechanical for a second opinion after an appointment with Air One. I have a Carrier HVAC system, and the Air One technician recommended a complete system replacement, claiming the blower was bad, the furnace control board needed replacing, and that there were other issues. Since replacing the HVAC is a big investment, I wanted to get a second opinion. It was only after comparing the service from Bluestar that I realized Air One may have been pushing for a new system sale or lacked the expertise to properly diagnose and repair the actual problems. Isaac, the technician from Bluestar, spent about an hour thoroughly diagnosing and fixing the issues. He found burnt wiring in the furnace and discovered that the wrong capacitor had been incorrectly installed in the AC. Isaac replaced the burnt wiring in the furnace and the capacitor in the AC. After these repairs, my Carrier system was back up and running—without the need for a costly replacement. Bluestar, and Isaac in particular, demonstrated professionalism, expertise, and honesty. They focused on resolving the actual issues instead of pushing for an unnecessary system replacement. I highly recommend Bluestar for their reliable service and Isaac’s thorough and knowledgeable work."
James C on October 2024

EDGE Energy
EDGE Energy
EDGE Energy is a licensed, insured, and bonded contractor in (DC, VA, and MD) incorporating green building standards during energy-saving installations for home and business owners.
Our special focus is designing and installing projects which decrease utility bills and energy consumption by 25% to well over 100% - even creating homes that are net-positive.
Our Company started in 2006 with 2 employees and has managed to grow substantially over the past 6 years, now employing 24 people in 3 states. The Companys workers have received training under numerous building science, weatherization, and renewable energy system designations.
As a core value to our customer service policy, we assist homeowners with their tax credits, rebates, and grant paperwork - just trying to make going-green easy.
""
Fred B on November 2021
EDGE Energy is a licensed, insured, and bonded contractor in (DC, VA, and MD) incorporating green building standards during energy-saving installations for home and business owners.
Our special focus is designing and installing projects which decrease utility bills and energy consumption by 25% to well over 100% - even creating homes that are net-positive.
Our Company started in 2006 with 2 employees and has managed to grow substantially over the past 6 years, now employing 24 people in 3 states. The Companys workers have received training under numerous building science, weatherization, and renewable energy system designations.
As a core value to our customer service policy, we assist homeowners with their tax credits, rebates, and grant paperwork - just trying to make going-green easy.
""
Fred B on November 2021

Earth Right Mid-Atlantic
Earth Right Mid-Atlantic
Earth Right Mid-Atlantic is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 15 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! We are 5 star Google rated, 5 star Facebook rated, and have recently won Best Alternative Energy company in Central Virginia through the readers choice awards!
"We recently installed a solar shield, solar attic fans, and 30 solar panels on our home. We are so happy with everything! From the first time we sat done with Shane Durie, to the installation, to the time it was switched on. They were very polite, professional, knowledgeable and respectful of our property. They even took care of permits and HOA approval. If anyone is looking for someone to install solar panels, give them a call, you will be happy you did. 5â ï¸ â ï¸ â ï¸ â ï¸ â ï¸"
Leo D on February 2022
Earth Right Mid-Atlantic is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 15 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! We are 5 star Google rated, 5 star Facebook rated, and have recently won Best Alternative Energy company in Central Virginia through the readers choice awards!
"We recently installed a solar shield, solar attic fans, and 30 solar panels on our home. We are so happy with everything! From the first time we sat done with Shane Durie, to the installation, to the time it was switched on. They were very polite, professional, knowledgeable and respectful of our property. They even took care of permits and HOA approval. If anyone is looking for someone to install solar panels, give them a call, you will be happy you did. 5â ï¸ â ï¸ â ï¸ â ï¸ â ï¸"
Leo D on February 2022

Root Electric
Root Electric
At Root Electric it is our honor to offer our customers superior service from the first telephone call to the final payment. Root Electric specializes in working directly with homeowners, business owners and facility managers in electrical construction, upgrades and service. All of our electricians are experienced and well-trained employees of root electric. Additionally, we do not sub-contract to any outside workers or companies for electrical work. Root Electric employs a dedicated sales staff to handle customer's telephone calls and to estimate projects. This insures that all telephone calls are returned in a timely manner and that all projects are accurately priced and scheduled. Additional DBA - William J Root Inc, Rootelectric. Award winning. Additional emails - [email protected], [email protected], [email protected]. Additional contact name - William Bill. Additional phones - (703) 618-5390.
"I had a new electrical line I wanted to run for a display light attached to a grandfather clock in our foyer. I also requested a switch be added to our wall panel by the front door to operate it. The job involved seeking a route for running wire behind the ceiling and drywall from our basement to the first floor of the house. The installation was complicated and obviously required a healthy amount of expertise in all respects. The work was accomplished with a minimal amount of mess (two small holes) and the quad switch panel added by our front door operates flawlessly. During the same visit they also replaced four decorative ceiling light fixtures and repaired a bad electrical outlet to boot. The workers were fast, efficient and friendly (even to my dog). I can't say enough about this company to do this justice. Very satisfied with my decision to give them a call."
Ronald H on September 2020
At Root Electric it is our honor to offer our customers superior service from the first telephone call to the final payment. Root Electric specializes in working directly with homeowners, business owners and facility managers in electrical construction, upgrades and service. All of our electricians are experienced and well-trained employees of root electric. Additionally, we do not sub-contract to any outside workers or companies for electrical work. Root Electric employs a dedicated sales staff to handle customer's telephone calls and to estimate projects. This insures that all telephone calls are returned in a timely manner and that all projects are accurately priced and scheduled. Additional DBA - William J Root Inc, Rootelectric. Award winning. Additional emails - [email protected], [email protected], [email protected]. Additional contact name - William Bill. Additional phones - (703) 618-5390.
"I had a new electrical line I wanted to run for a display light attached to a grandfather clock in our foyer. I also requested a switch be added to our wall panel by the front door to operate it. The job involved seeking a route for running wire behind the ceiling and drywall from our basement to the first floor of the house. The installation was complicated and obviously required a healthy amount of expertise in all respects. The work was accomplished with a minimal amount of mess (two small holes) and the quad switch panel added by our front door operates flawlessly. During the same visit they also replaced four decorative ceiling light fixtures and repaired a bad electrical outlet to boot. The workers were fast, efficient and friendly (even to my dog). I can't say enough about this company to do this justice. Very satisfied with my decision to give them a call."
Ronald H on September 2020

Staples Electric LLC
Staples Electric LLC
Your home is important, and your safety is important to us! We provide electrical system safety inspections. We can also upgrade the electrical safety devices in your home or increase your electric panel and service size so you can add new electrical devices to your home. Our professionals commonly install, repair and provide electrical system changes, maintenance for fuse boxes, smoke detectors and lighting receptacles, home automation wiring and design. Are you remodeling? Staples Electric is the first to call for home improvements when you want to install new lighting, ceiling fans, change your light switches, improve data and networking signals, install a hot tub, or upgrade your electric panel to handle today's new electric components and accessories. Staples Electric will care for your home as though it is our own. Work areas will be carefully draped with plastic and your project will be completed with neat, high-quality results that will make you proud. We are one of the few electricians in the area that includes a rough patch to any holes made to drywall. As one of Northern Virginia’s favorite electricians, you can count on Staples Electric to provide the best installation and repair services at an affordable price. For small projects, we can provide an estimate by phone or email. We provide free, no-obligation on-site estimates for larger projects. Service calls (repairs) are charged by time on site, one-hour minimum, no travel charges. Angie’s List Members receive a 10% discount for service calls (repairs), please ask for details when scheduling. Billing is COD and credit card. Staples Electric is a family-run business with 4-6 employees. . We are licensed and insured for your protection.
"All items identified in the initial walk-though addressed. Took almost a full day as expected, new LEDs made a huge difference. While a bit more expensive than some outfits, I continue to use Staples Electric given the quality of the work. A very successful day, upgrade long overdue."
Keith L on July 2022
Your home is important, and your safety is important to us! We provide electrical system safety inspections. We can also upgrade the electrical safety devices in your home or increase your electric panel and service size so you can add new electrical devices to your home. Our professionals commonly install, repair and provide electrical system changes, maintenance for fuse boxes, smoke detectors and lighting receptacles, home automation wiring and design. Are you remodeling? Staples Electric is the first to call for home improvements when you want to install new lighting, ceiling fans, change your light switches, improve data and networking signals, install a hot tub, or upgrade your electric panel to handle today's new electric components and accessories. Staples Electric will care for your home as though it is our own. Work areas will be carefully draped with plastic and your project will be completed with neat, high-quality results that will make you proud. We are one of the few electricians in the area that includes a rough patch to any holes made to drywall. As one of Northern Virginia’s favorite electricians, you can count on Staples Electric to provide the best installation and repair services at an affordable price. For small projects, we can provide an estimate by phone or email. We provide free, no-obligation on-site estimates for larger projects. Service calls (repairs) are charged by time on site, one-hour minimum, no travel charges. Angie’s List Members receive a 10% discount for service calls (repairs), please ask for details when scheduling. Billing is COD and credit card. Staples Electric is a family-run business with 4-6 employees. . We are licensed and insured for your protection.
"All items identified in the initial walk-though addressed. Took almost a full day as expected, new LEDs made a huge difference. While a bit more expensive than some outfits, I continue to use Staples Electric given the quality of the work. A very successful day, upgrade long overdue."
Keith L on July 2022

USA Insulation
USA Insulation
CALL 301-761-1811 FOR A FREE ENERGY ANALYSIS. SERVING VA, MD, BALTIMORE AREA LOCATIONS. We install attic insulation, wall insulation (injected foam from outside,) crawl space insulation, air sealing and garage ceiling insulation. Address: 7389 Washington Blvd, Elkridge, MD 21075. 0% Financing available for qualified individuals.
"USA Inslulation reinsulated attic crawl spaces and knee walls. Estimator came out and was very knowledgable and recommended appropriate insulation for the job. He arrived on time, was pleasant to work with, and provided other energy savings tips. Work included removing old insluation that had fallen down, air sealing, insulaltion baffles, blown in fiberglass and fiberglass batts on the knee walls. The insulation technicians were knowledgeable and conciencious and worked efficietly to complete the job. They put paper tape measures in the blown in section which indicates the depth. The area was cleaned up nicely when done. Office staff was friendly and returned my call with additional information when they said they would. Overall summary - a good value, a job well done, and good people to work with."
John M on February 2023
CALL 301-761-1811 FOR A FREE ENERGY ANALYSIS. SERVING VA, MD, BALTIMORE AREA LOCATIONS. We install attic insulation, wall insulation (injected foam from outside,) crawl space insulation, air sealing and garage ceiling insulation. Address: 7389 Washington Blvd, Elkridge, MD 21075. 0% Financing available for qualified individuals.
"USA Inslulation reinsulated attic crawl spaces and knee walls. Estimator came out and was very knowledgable and recommended appropriate insulation for the job. He arrived on time, was pleasant to work with, and provided other energy savings tips. Work included removing old insluation that had fallen down, air sealing, insulaltion baffles, blown in fiberglass and fiberglass batts on the knee walls. The insulation technicians were knowledgeable and conciencious and worked efficietly to complete the job. They put paper tape measures in the blown in section which indicates the depth. The area was cleaned up nicely when done. Office staff was friendly and returned my call with additional information when they said they would. Overall summary - a good value, a job well done, and good people to work with."
John M on February 2023
Home Exteriors Energy Consultants Inc
Home Exteriors Energy Consultants Inc
Our company is based on the belief that our customers' needs are of the utmost importance. Our entire team is committed to meeting those needs, we specialize in only the most energy efficient products available on the market, all of our windows, doors and siding materials have been energy star rated to meet the highest standards available today. With our unique approach to getting our customers the best price possible, we have the manufactures practically bidding on your job to get your business, as a result you are guaranteed the best value for dollar on every one of our energy efficient products, weather it’s our siding, windows, doors or roofs. As a result, a high percentage of our business is from repeat customers and referrals. We would welcome the opportunity to earn your trust and deliver you the best service in the industry. Additional DBA - HE E C.
"Mark and his team installed my doors and windows five years ago. I was so pleased, the workers were courteous, efficient and on time. The Provia Door is an outstanding product and looks as gorgeous now as it did when they installed it. This company is amazing, they just responded to a request I had, five years after the original installation. That's a company you want to do business with, they stand by their products and continue to be courteous. I would highly recommend them."
Sharon S on October 2020
Our company is based on the belief that our customers' needs are of the utmost importance. Our entire team is committed to meeting those needs, we specialize in only the most energy efficient products available on the market, all of our windows, doors and siding materials have been energy star rated to meet the highest standards available today. With our unique approach to getting our customers the best price possible, we have the manufactures practically bidding on your job to get your business, as a result you are guaranteed the best value for dollar on every one of our energy efficient products, weather it’s our siding, windows, doors or roofs. As a result, a high percentage of our business is from repeat customers and referrals. We would welcome the opportunity to earn your trust and deliver you the best service in the industry. Additional DBA - HE E C.
"Mark and his team installed my doors and windows five years ago. I was so pleased, the workers were courteous, efficient and on time. The Provia Door is an outstanding product and looks as gorgeous now as it did when they installed it. This company is amazing, they just responded to a request I had, five years after the original installation. That's a company you want to do business with, they stand by their products and continue to be courteous. I would highly recommend them."
Sharon S on October 2020

Evergreen Electric LLC
Evergreen Electric LLC
Family owned & operated full service electrical contractors. We offer residential, commercial, industrial and eco-friendly solutions and place a high premium on customer service. Authorized and certified Generac generator specialists providing back up power to homes and businesses. Experts in trouble shooting and offering cost effective electrical solutions to our valued customers.
Family owned & operated full service electrical contractors. We offer residential, commercial, industrial and eco-friendly solutions and place a high premium on customer service. Authorized and certified Generac generator specialists providing back up power to homes and businesses. Experts in trouble shooting and offering cost effective electrical solutions to our valued customers.
FAQs for energy efficiency auditing projects in Warrenton, VA
An energy audit costs about $420 on average, ranging from $100 to $2,250, depending on the size of your home, property, location, and the tests the auditor needs to perform. Keep in mind that the 2022 Inflation Reduction Act’s Energy Efficient Home Improvement credit covers up to $150 of home energy audit costs. Common energy audit tests include:
Blower door test: $350
Duct testing: $100
HERS test: $375
HERS certification: $200
Infrared imaging: $200
The difference between an energy auditor and a home inspector is primarily in the purpose of the inspection. The energy auditor conducts tests in your home to determine the energy efficiency levels in areas like windows, insulation, and doorways. The auditor then makes recommendations for ways to improve a home’s energy efficiency.
A home inspector examines various structures of your home to determine that everything is up to code and gauge the condition of features like the roof, foundation, HVAC, and electrical. The home inspector reports on the overall home and makes repair recommendations.
Typically, a local home energy auditor is responsible for performing energy audits. A home energy auditor will conduct one of three energy audits designed by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to determine the energy efficiency of your home. The auditor often provides analysis that can help guide changes and improvements to your home for better energy efficiency, giving recommendations as necessary.
The three levels of home energy audits include:
Level 1: Review of your energy bills and home for signs of energy inefficiency and areas for improvement. The average cost range is $0.08 to $0.12 per square foot.
Level 2: A level 2 ASHRAE energy audit costs $0.12 and $0.35 per square foot. In-depth analysis of your energy usage and provides a report of cost-saving changes.
Level 3: Comprehensive analysis and detailed recommendations for ways to improve your home’s energy efficiency. A level 3 audit costs about $0.36 to $0.50 per square foot.
To find a reputable energy auditor, find a local company that offers energy audit services. Research the company’s reviews, methods, and certifications to find a reliable professional in your area. The most reputable energy audit companies are HEP-certified by the Building Performance Institute (BPI). Be sure to check our state licensing tool to review the local energy auditor guidelines to ensure you’re hiring a certified professional.
The Warrenton, VA homeowners’ guide to energy efficiency auditing services
From average costs to expert advice, get all the answers you need to get your job done.
•Discover the average home energy audit cost, what impacts pricing, and how to save money on your audit. Get transparent, expert-backed cost info for homeowners.

A home energy audit is a detailed write-up of how to lower your utility bills and increase your comfort level. Find out if they’re worth the cost.
•Get a detailed breakdown of thermal imaging home inspection costs, including average prices, cost factors, and tips to help homeowners budget.

Home energy audits can identify ways to make your home more energy-efficient. Learn whether an energy audit is a good investment for your home.
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