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    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Seven Corners

Avatar for F.H. Furr Plumbing Heating AC & Electrical

F.H. Furr Plumbing Heating AC & Electrical

9040 Mike Garcia Dr
4.62(
2,318
)
Approved Pro

F.H. Furr Plumbing Heating AC & Electrical

9040 Mike Garcia Dr
4.62(
2,318
)
Approved Pro
Customers say: Super punctual
150 local quotes requested
44 years of experience

F.H. Furr provides residential products and services in the plumbing, heating, air conditioning, and electrical business. They put their customers first and provide them with quality products from trained technicians. F.H. Furr has committed to the highest degree of professional development and training in the industry, to work diligently in exceeding every expectation of the client in need. Based out of Manassas, Va., the company has expanded throughout Northern Va., Rockville, Md., Fredericksburg, and Richmond, Va. Whether you need plumbing, heating, cooling, or electrical repairs or replacements, call on F.H. Furr for "Absolutely The Best" service!

"The repair work was well done. I had no idea it would take 2 people. The first quote was for a lower price but then they did not have the parts so I said OK to the more expensive option. But then they were not able to do the more expensive option so they went and got the part for the lower price option. But ultimately they charged me for the higher price option. I have called three days in a row and have not been able to resolve the price discrepancy."

Andy W on June 2025

F.H. Furr provides residential products and services in the plumbing, heating, air conditioning, and electrical business. They put their customers first and provide them with quality products from trained technicians. F.H. Furr has committed to the highest degree of professional development and training in the industry, to work diligently in exceeding every expectation of the client in need. Based out of Manassas, Va., the company has expanded throughout Northern Va., Rockville, Md., Fredericksburg, and Richmond, Va. Whether you need plumbing, heating, cooling, or electrical repairs or replacements, call on F.H. Furr for "Absolutely The Best" service!

"The repair work was well done. I had no idea it would take 2 people. The first quote was for a lower price but then they did not have the parts so I said OK to the more expensive option. But then they were not able to do the more expensive option so they went and got the part for the lower price option. But ultimately they charged me for the higher price option. I have called three days in a row and have not been able to resolve the price discrepancy."

Andy W on June 2025


Avatar for Relax HVAC, Inc.

Relax HVAC, Inc.

43330 Junction Plz
5.00(
28
)
Approved Pro

Relax HVAC, Inc.

43330 Junction Plz
5.00(
28
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
85 local quotes requested

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


Avatar for Cyprus Air Heating, Cooling and Fireplaces

Cyprus Air Heating, Cooling and Fireplaces

7525 Richmond Hwy
4.06(
491
)
Approved Pro

Cyprus Air Heating, Cooling and Fireplaces

7525 Richmond Hwy
4.06(
491
)
Approved Pro
Customers say: Quality work
24 local quotes requested
58 years of experience

FREE IN-HOME ESTIMATES | GET A FREE AIR CONDITIONER Cyprus Air Heating & Cooling is your single resource for all your home comfort needs, from tailoring your ideal comfort system to installation, service and beyond. Cyprus Air installs and repairs a variety of Heating & Cooling equipment. With over 56 years of experience in the business, we also offer other home improvement and indoor comfort services such as Gas Fireplaces & Gas logs, and Duct Cleaning. With so many years of design, and installations in Northern Virginia, DC and Maryland, Cyprus Air offers its service oriented expertise and reliability to ensure the high quality standards that architects, engineers, and homeowners have come to rely on from one of the industry leaders.

"I called to get an inspection done on my AC unit and was quoted $90 for the inspection plus $120 an hr for ADDITIONAL hrs. I ASKED when do I know when the “additional hrs start”, He stated that the tech would let me know once the inspection was done and then at that time he would let me know if there was work that needed to be fixed or if there was nothing then the service would end and I would only have to pay the $90. They charged me $210 for the inspection. I called and requested that we both listen to the call (Because all calls are recorded) They played the call, heard what the rep said and then stated they would get back to me. When I finally reached them again (they never called me back), they stated I would not get a refund, then replayed the call cutting out the part when the rep stated clearly that the service was only $90. They not only GASLIGHTED me, but they altered the recording. $120 may not matter to most but it sure matters to me."

Kay H on June 2025

FREE IN-HOME ESTIMATES | GET A FREE AIR CONDITIONER Cyprus Air Heating & Cooling is your single resource for all your home comfort needs, from tailoring your ideal comfort system to installation, service and beyond. Cyprus Air installs and repairs a variety of Heating & Cooling equipment. With over 56 years of experience in the business, we also offer other home improvement and indoor comfort services such as Gas Fireplaces & Gas logs, and Duct Cleaning. With so many years of design, and installations in Northern Virginia, DC and Maryland, Cyprus Air offers its service oriented expertise and reliability to ensure the high quality standards that architects, engineers, and homeowners have come to rely on from one of the industry leaders.

"I called to get an inspection done on my AC unit and was quoted $90 for the inspection plus $120 an hr for ADDITIONAL hrs. I ASKED when do I know when the “additional hrs start”, He stated that the tech would let me know once the inspection was done and then at that time he would let me know if there was work that needed to be fixed or if there was nothing then the service would end and I would only have to pay the $90. They charged me $210 for the inspection. I called and requested that we both listen to the call (Because all calls are recorded) They played the call, heard what the rep said and then stated they would get back to me. When I finally reached them again (they never called me back), they stated I would not get a refund, then replayed the call cutting out the part when the rep stated clearly that the service was only $90. They not only GASLIGHTED me, but they altered the recording. $120 may not matter to most but it sure matters to me."

Kay H on June 2025


Avatar for OHA HVAC, Plumbing, Roofing, Chimney

OHA HVAC, Plumbing, Roofing, Chimney

2800 Juniper St
5.00(
4
)
Approved Pro

OHA HVAC, Plumbing, Roofing, Chimney

2800 Juniper St
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
83 local quotes requested

OHA HVA, Plumbing, Chimney & Fireplaces brings an unmatched commitment to excellence to your Home projects. We have over 25 years of experience delivering unsurpassed professionalism, expertise, and value. We take pride in providing our customers with personalized customer service, the highest industry standards, and top-quality workmanship. References available upon request. Give us a call today!

"It went well and was quick, but expensive"

Brian N on August 2025

OHA HVA, Plumbing, Chimney & Fireplaces brings an unmatched commitment to excellence to your Home projects. We have over 25 years of experience delivering unsurpassed professionalism, expertise, and value. We take pride in providing our customers with personalized customer service, the highest industry standards, and top-quality workmanship. References available upon request. Give us a call today!

"It went well and was quick, but expensive"

Brian N on August 2025


"I’ve been a loyal Snell customer for years, but this recent experience was deeply disappointing. After our AC failed in August, Snell diagnosed a leaking evaporator coil. We chose to replace the system through them, and the salesperson took time to evaluate the setup in advance. However, on installation day, the crew arrived without the correct ductwork and had to make adjustments on the fly. Unfortunately, the adjustments were poorly executed: • The Aprilaire humidifier was mounted on sloped ductwork rather than a level surface, contrary to manufacturer specifications. • The hole for the humidifier was cut inaccurately. • The drain line was left kinked in multiple places. Aprilaire support later confirmed the humidifier was not installed correctly and warned this could lead to water backing up into the system — a concern I had raised with the installers before they left. Despite multiple follow-up attempts, I received no meaningful response. I was told my concerns would be escalated, but no one followed through. This was a major investment, and I now feel I need to bring in another HVAC team to correct issues that should have been resolved from the start. I’ve recommended Snell in the past, but I can’t in good faith do so now after this experience."

Will H on September 2025

Family owned & operated. Financing available. Credit cards. All work done by experienced professionals to ensure consistent high quality. Award winning company at your service.

"I’ve been a loyal Snell customer for years, but this recent experience was deeply disappointing. After our AC failed in August, Snell diagnosed a leaking evaporator coil. We chose to replace the system through them, and the salesperson took time to evaluate the setup in advance. However, on installation day, the crew arrived without the correct ductwork and had to make adjustments on the fly. Unfortunately, the adjustments were poorly executed: • The Aprilaire humidifier was mounted on sloped ductwork rather than a level surface, contrary to manufacturer specifications. • The hole for the humidifier was cut inaccurately. • The drain line was left kinked in multiple places. Aprilaire support later confirmed the humidifier was not installed correctly and warned this could lead to water backing up into the system — a concern I had raised with the installers before they left. Despite multiple follow-up attempts, I received no meaningful response. I was told my concerns would be escalated, but no one followed through. This was a major investment, and I now feel I need to bring in another HVAC team to correct issues that should have been resolved from the start. I’ve recommended Snell in the past, but I can’t in good faith do so now after this experience."

Will H on September 2025


Avatar for Founders Insulation

Founders Insulation

4447 Brookfield Corporate Drive Suite A
4.93(
14
)
Approved Pro

Founders Insulation

4447 Brookfield Corporate Drive Suite A
4.93(
14
)
Approved Pro
Super Service Award
Customers say: Quick response
221 local quotes requested
3 years of experience

Founders Insulation, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I had a wonderful experience with Founders Insulation. They were extremely easy to work with. It was easy to schedule an appointment, the gentleman who came out was knowledgeable and polite, and I felt that I received good information and they did not try to sell me something I did not need. Their quote was excellent. The work was scheduled and completed quickly. The installation team was courtesy, thorough, and knew their stuff. They were respectful of my home and went above and beyond. I highly recommend this company."

Susan H on April 2025

Founders Insulation, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I had a wonderful experience with Founders Insulation. They were extremely easy to work with. It was easy to schedule an appointment, the gentleman who came out was knowledgeable and polite, and I felt that I received good information and they did not try to sell me something I did not need. Their quote was excellent. The work was scheduled and completed quickly. The installation team was courtesy, thorough, and knew their stuff. They were respectful of my home and went above and beyond. I highly recommend this company."

Susan H on April 2025


Avatar for 3 PROS Basement System

3 PROS Basement System

110 Ruritan Rd
4.52(
22
)
Approved Pro

3 PROS Basement System

110 Ruritan Rd
4.52(
22
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
90 local quotes requested

3 Pros Basement Systems uses proven basement waterproofing, sump pump and crawl space encapsulation solutions to help eliminate wet basements and nasty crawl spaces. We can help make the air in your home drier, healthier and more comfortable. We offer free inspections and will focus on the science of your home to design a project to improve wet basements, cold floors, drafty rooms, nasty crawl spaces and high energy bills. We have worked in 1000's of homes across Northern Virginia and West Virginia and always enjoy clients who call us days after service to let us know how much they can feel the differences in their home.

"great"

Qasim M on May 2023

3 Pros Basement Systems uses proven basement waterproofing, sump pump and crawl space encapsulation solutions to help eliminate wet basements and nasty crawl spaces. We can help make the air in your home drier, healthier and more comfortable. We offer free inspections and will focus on the science of your home to design a project to improve wet basements, cold floors, drafty rooms, nasty crawl spaces and high energy bills. We have worked in 1000's of homes across Northern Virginia and West Virginia and always enjoy clients who call us days after service to let us know how much they can feel the differences in their home.

"great"

Qasim M on May 2023


Avatar for Comfenergy

Comfenergy

45714 Oak Brook Ct.
4.29(
33
)
Approved Pro

Comfenergy

45714 Oak Brook Ct.
4.29(
33
)
Approved Pro
Customers say: Quick response
107 local quotes requested
12 years of experience

Comfenergy is a locally owned & operated Insulation Contractor. We focus on home comfort and energy efficiency. We specialize in residential & 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 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, 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? Call for a free estimate in insulation or air sealing solutions.

"They were great."

Laura O on May 2024

Comfenergy is a locally owned & operated Insulation Contractor. We focus on home comfort and energy efficiency. We specialize in residential & 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 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, 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? Call for a free estimate in insulation or air sealing solutions.

"They were great."

Laura O on May 2024


Avatar for United Solar

United Solar

No reviews yet

United Solar

No reviews yet

If you're looking to save money, stop renting your electricity from your electric company and take control of your monthly electric bill- solar can help! With great warranties, completely virtual and free consultations, we can evaluate your house, your needs and what solar will look like for you to see if its a good fit! Solar is growing and more and more people are reaping the finial benefits of solar every day. Contact me to see what solar would look like for you!

If you're looking to save money, stop renting your electricity from your electric company and take control of your monthly electric bill- solar can help! With great warranties, completely virtual and free consultations, we can evaluate your house, your needs and what solar will look like for you to see if its a good fit! Solar is growing and more and more people are reaping the finial benefits of solar every day. Contact me to see what solar would look like for you!


S&S Corp.

No reviews yet

S&S Corp.

No reviews yet

Remodeling services, design, painting, includes electrical, plumbing and air conditioning. We work with stones, we do fences, patios, retaining walls, decks.

Remodeling services, design, painting, includes electrical, plumbing and air conditioning. We work with stones, we do fences, patios, retaining walls, decks.

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Energy Efficiency Auditing questions, answered by experts

Typically, triple-pane windows made with krypton gas filling are the most energy efficient. A window’s frame, glass, design, and installation all affect its energy efficiency. These windows, in particular, are designed highly effectively in terms of their ability to insulate.

Wood windows fall in the middle of the window frame materials when it comes to energy efficiency. They’re more insulating than aluminum and vinyl, but they aren’t as efficient as fiberglass or composite frames. If you love the look and lifespan of wood windows and want to maximize efficiency, you can upgrade to double-pane or triple-pane glass and consider window tinting and low-emissivity (low-E) coatings to minimize heat transfer.

Home power is measured in kilowatt-hours, commonly expressed as kWh. The average home uses between 800 and 1,000 kWh per month. Peak usage (and highest bills) occurs in the middle of summer and the depths of winter. Keeping on top of your usage during these crucial months will lower your annual average usage considerably. 

Hawaii is currently rated as the most expensive state for utilities. How much are utilities for a house in Hawaii? With electricity costs in Hawaii totaling nearly 42 cents per kilowatt-hour, residents are paying more to run their households than any other residents. Electricity costs in Hawaii are so high, mostly due to the fact that most of the electricity available to residents is produced using oil that must be shipped in from other places.

While parts of the appraisal are out of your control, there are some things you can do to potentially raise the home’s value. You can make necessary repairs and upgrades before the appraiser visits—an appraiser can only value what is currently part of the home, not its potential. You can also provide the appraiser with the cost of recent upgrades. The appraiser will likely increase the value of your home by about 50% or more of what you paid for those improvements.

The Seven Corners, 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.