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    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Westphalia

Avatar for GAC Services

GAC Services

227 E Deer Park Dr
4.80(
279
)
Approved Pro

GAC Services

227 E Deer Park Dr
4.80(
279
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
599 local quotes requested

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak K on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak K on February 2025


F.H. Furr Plumbing Heating & Air Conditioning Inc

685 Lofstrand Lane
4.33(
15
)
Approved Pro

F.H. Furr Plumbing Heating & Air Conditioning Inc

685 Lofstrand Lane
4.33(
15
)
Approved Pro
Customers say: Super punctual
193 local quotes requested
44 years of experience

Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!

"Nice, reliable, and responded immediately."

Ethan Q on January 2025

Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!

"Nice, reliable, and responded immediately."

Ethan Q on January 2025


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
25 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 Lumeco Energy

Lumeco Energy

8643 Cherry Lane
5.00(
5
)
Approved Pro

Lumeco Energy

8643 Cherry Lane
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

Lumeco Energy is a locally owned and operated energy efficiency company that values honesty and integrity and treats your home as if it were our own. We offer BGE and Pepco rebates for all of our services and guarantee excellent customer service. Bottom line, we take care of our customers and offer utility rebates for all of our services. Our customers pay less for more!

"I insulated my attic, and upgraded my HVAC system through BGEâ s home performance program. Lumeco was my contractor and they did a fantastic job and pricing was discounted. Great company!"

James O on April 2024

Lumeco Energy is a locally owned and operated energy efficiency company that values honesty and integrity and treats your home as if it were our own. We offer BGE and Pepco rebates for all of our services and guarantee excellent customer service. Bottom line, we take care of our customers and offer utility rebates for all of our services. Our customers pay less for more!

"I insulated my attic, and upgraded my HVAC system through BGEâ s home performance program. Lumeco was my contractor and they did a fantastic job and pricing was discounted. Great company!"

James O on April 2024


Advanced Green Home Solutions

1125 West St. Ste 421
New on AngiNew on Angi
Approved Pro

Advanced Green Home Solutions

1125 West St. Ste 421
New on AngiNew on Angi
Approved Pro
4 years of experience
Free onsite estimate

Advanced Green Home Solutions is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Advanced Green Home Solutions is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

Advanced Green Home Solutions is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Advanced Green Home Solutions is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!


Elysian Energy, LLC

14300 Cherry Lane Ct., Suite 214
New on AngiNew on Angi
Approved Pro

Elysian Energy, LLC

14300 Cherry Lane Ct., Suite 214
New on AngiNew on Angi
Approved Pro
18 years of experience
Free onsite estimate

Elysian Energy, LLC 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 50 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!

Elysian Energy, LLC 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 50 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!


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!


Avatar for RSS Solar

RSS Solar

Aurora Ave.
No reviews yet

RSS Solar

Aurora Ave.
No reviews yet
Free onsite estimate

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.


Avatar for Terra Insulation

Terra Insulation

Servicing Around
4.86(
7
)

Terra Insulation

Servicing Around
4.86(
7
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Our insulation and home performance company is dedicated to creating more comfortable and energy-efficient homes. Our mission is to help homeowners save money on their energy bills while reducing their carbon footprint. With years of experience in the industry, we specialize in providing top-quality insulation and air-sealing services that are tailored to meet the unique needs of each client. Our team of BPI certified Energy Strategists used the latest technology, techniques and standards to ensure that your home is properly insulated, so you can enjoy optimal comfort year-round. Whether you need insulation installed, air sealing services, or a comprehensive home energy audit, we are here to help you achieve your goals.

"It went well. A small mis-communication caused by accidental damage to a ceiling, but it worked out fine."

Robert F on July 2025

Our insulation and home performance company is dedicated to creating more comfortable and energy-efficient homes. Our mission is to help homeowners save money on their energy bills while reducing their carbon footprint. With years of experience in the industry, we specialize in providing top-quality insulation and air-sealing services that are tailored to meet the unique needs of each client. Our team of BPI certified Energy Strategists used the latest technology, techniques and standards to ensure that your home is properly insulated, so you can enjoy optimal comfort year-round. Whether you need insulation installed, air sealing services, or a comprehensive home energy audit, we are here to help you achieve your goals.

"It went well. A small mis-communication caused by accidental damage to a ceiling, but it worked out fine."

Robert F on July 2025


"I received great service with this company! My problem was fixed in a timely manner and done efficiently. I even received a call months down the road from the company making sure everything was still running smoothly. I’m highly impressed with this company and will use them again/recommend them to anyone who has HVAC needs! Thank you to Nick and Bayfront for your great service!"

Ryshelle W on December 2022

We are a small family owned company. We are reliable, trustworthy, and caring. We offer replacement, service, duct modification, and maintenance.

"I received great service with this company! My problem was fixed in a timely manner and done efficiently. I even received a call months down the road from the company making sure everything was still running smoothly. I’m highly impressed with this company and will use them again/recommend them to anyone who has HVAC needs! Thank you to Nick and Bayfront for your great service!"

Ryshelle W on December 2022

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Energy Efficiency Auditing questions, answered by experts

Insulation is measured by R-value, which is the measure of a material's ability to resist heat transfer. The higher the number, the better the insulation. When installing insulation yourself, you need to determine the optimal R-value you need to keep your home warm in the wintertime, cool in the heat of summer, and energy-efficient all year long. Each inch of insulation provides between a 3 and an 8 R-value. The climate where you live plays a major role in what R-value you need and the price tag you might see in your insulation installation.

A good SEER rating is between 15 and 20. However, if you want the best possible efficiency, look for HVAC units with a SEER rating higher than 21. Keep in mind that the SEER rating doesn’t mean that the unit will reach that efficiency all the time, but it does have the capacity to operate at that high of an efficiency level.

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.

HVAC systems use the most household electricity. This major and essential system is responsible for heating and cooling your home all year round. Since they operate for a significant amount during the day, it consumes more energy than other appliances. 

Smart glass doesn’t use a lot of electricity, and you can expect a standard window to add between $1 and $2 per year to your electric bills. Smart glass is proof that energy-efficient windows work. Although your smart windows may consume a little energy to operate, they can save enough energy to offset the costs. If you’re concerned about the minimal bump to your electricity consumption, you can opt for smart tint, which doesn’t require electricity to work.

The Westphalia, MD homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.