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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon24
    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Radnor

"These guys are complete rip-offs!!! I got two other estimates for the replacement of a service cable. They were $500.00 and $700.00. Gen3's price... $4100.00 It took an inordinate amount of phone calls, texts, and emails to get an appointment for an estimate. Then they did not bother to send it to me. I had to call back for the estimate. These guys are the worst, most dishonest operators I have ever seen. They are 8 times more expensive than every one else. THINK ABOUT IT..... 800% more than the competition. Do not call these guys. OBVIOUSLY A DUMB GUY that thinks the public is STUPID. Don't trust them!!!!!! CROOKS"

Steve S on November 2025

GEN3 is Your Friendly Neighborhood Home Expert, serving Philadelphia and the surrounding areas for 25 years. Give us a call for all of your electrical, heating & cooling and water heater needs!

"These guys are complete rip-offs!!! I got two other estimates for the replacement of a service cable. They were $500.00 and $700.00. Gen3's price... $4100.00 It took an inordinate amount of phone calls, texts, and emails to get an appointment for an estimate. Then they did not bother to send it to me. I had to call back for the estimate. These guys are the worst, most dishonest operators I have ever seen. They are 8 times more expensive than every one else. THINK ABOUT IT..... 800% more than the competition. Do not call these guys. OBVIOUSLY A DUMB GUY that thinks the public is STUPID. Don't trust them!!!!!! CROOKS"

Steve S on November 2025


Avatar for E S G, Inc.

E S G, Inc.

4.80(
109
)
Approved Pro

E S G, Inc.

4.80(
109
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
1981 years of experience

Energy Services Group is a certified and award-winning Home Performance with Energy Star contractor. We follow the best practices of the program to ensure that your home maximizes the available rebate opportunities and realizes all the comforts and savings gained by becoming more energy efficient. At Energy Services Group we work within the Delaware, New Jersey and Pennsylvania Energy Efficiency Rebate Programs. Energy Services Group is a Gold Star BPI Contractor.

"They were great and easy to deal with. "

Matthew W on June 2025

Energy Services Group is a certified and award-winning Home Performance with Energy Star contractor. We follow the best practices of the program to ensure that your home maximizes the available rebate opportunities and realizes all the comforts and savings gained by becoming more energy efficient. At Energy Services Group we work within the Delaware, New Jersey and Pennsylvania Energy Efficiency Rebate Programs. Energy Services Group is a Gold Star BPI Contractor.

"They were great and easy to deal with. "

Matthew W on June 2025


Avatar for Home Energy and Comfort, LLC

Home Energy and Comfort, LLC

4.98(
46
)
Approved Pro

Home Energy and Comfort, LLC

4.98(
46
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2015 years of experience

Home Energy and Comfort is here to make sure your home is as comfortable and efficient as possible. We are the only GoldStar Contractor doing insulation work in SE PA. We specialize in whole home performance by understanding how the multiple systems in your home should work together. Through a thorough analysis of your home and a detailed consultation with you, we can provide you with recommendations to help achieve your home performance goals. These measures can make your home more comfortable and healthy while significantly lowering your utility bills and improving you and your family's quality of life in your home. With over 60 years of combined experience in the industry and extensive training and certifications, we know how to approach home performance safely and correctly. We look forward to consulting with you about your home performance needs and creating custom solutions for you, your family, and your home!

"Ben, the owner, came to our home for a total evaluation of how we might improve comfort and save energy. The focus and area of most concern was the basement, where air leakage was causing some first-floor rooms to feel colder than others. Kyle and John spent roughly seven hours using spray foam at accessible rim joists, lining the walls of the crawl space, and adding insulation to two exterior doors. Since it has been only a week, we don't know if we will see monetary saving, but we are pleased that our first level floors no longer have the cold spots. The guys were pleasant, kept us informed throughout the day, and showed us what had been done before they left. Thank you Home Energy & Comfort!"

Susan K on January 2022

Home Energy and Comfort is here to make sure your home is as comfortable and efficient as possible. We are the only GoldStar Contractor doing insulation work in SE PA. We specialize in whole home performance by understanding how the multiple systems in your home should work together. Through a thorough analysis of your home and a detailed consultation with you, we can provide you with recommendations to help achieve your home performance goals. These measures can make your home more comfortable and healthy while significantly lowering your utility bills and improving you and your family's quality of life in your home. With over 60 years of combined experience in the industry and extensive training and certifications, we know how to approach home performance safely and correctly. We look forward to consulting with you about your home performance needs and creating custom solutions for you, your family, and your home!

"Ben, the owner, came to our home for a total evaluation of how we might improve comfort and save energy. The focus and area of most concern was the basement, where air leakage was causing some first-floor rooms to feel colder than others. Kyle and John spent roughly seven hours using spray foam at accessible rim joists, lining the walls of the crawl space, and adding insulation to two exterior doors. Since it has been only a week, we don't know if we will see monetary saving, but we are pleased that our first level floors no longer have the cold spots. The guys were pleasant, kept us informed throughout the day, and showed us what had been done before they left. Thank you Home Energy & Comfort!"

Susan K on January 2022


Old Skool HVAC,LLC

4.70(
10
)
Approved Pro

Old Skool HVAC,LLC

4.70(
10
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
1982 years of experience

I service ALL makes and models of heating equipment. Oil, gas/propane, heat pumps, water heaters, boilers (hot water and steam) and refrigeration equipment. I do both residential and commercial work. All work comes with warranties. Licensed and insured. PA098480 Oil furnace/boiler cleaning $159.00, Gas furnace clean/tune-up $ 69.00 Heat pump clean/tune-up $ 79.00 Military, Senior, Public service(Fire/Police) Discounts NO ADDED OVERTIME OR WEEKEND RATES....EVER!!! Same price any time. Any day. Including holidays. 30 years' experience !!!! FREE estimates on new equipment replacements FREE 2nd opinions 302-669-9167

"They were professional, and they did a very well job."

Richard M on June 2022

I service ALL makes and models of heating equipment. Oil, gas/propane, heat pumps, water heaters, boilers (hot water and steam) and refrigeration equipment. I do both residential and commercial work. All work comes with warranties. Licensed and insured. PA098480 Oil furnace/boiler cleaning $159.00, Gas furnace clean/tune-up $ 69.00 Heat pump clean/tune-up $ 79.00 Military, Senior, Public service(Fire/Police) Discounts NO ADDED OVERTIME OR WEEKEND RATES....EVER!!! Same price any time. Any day. Including holidays. 30 years' experience !!!! FREE estimates on new equipment replacements FREE 2nd opinions 302-669-9167

"They were professional, and they did a very well job."

Richard M on June 2022


Lowry EcoSolutions

4.96(
55
)

Lowry EcoSolutions

4.96(
55
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Lowry EcoSolutions is an independent energy auditing firm. We work for you the homeowner, not a contractor. We do not accept financial compensation from any contractor for any work. We offer sustainable and cost effective solutions to homeowners so that they may save money and valuable resources including electricity, natural gas, water, and other materials that our society often considers waste.

"Eric was quick to respond and to plan. He was friendly and easy to approach, fielded all of my questions during the assessment, and responded with the formal document in a timely fashion. He provided me with invaluable insight regarding the condition of my home's energy efficiency, was straightforward regarding what issues would provide the greatest return on investment, and immensely eased the triage of the many energy issues an old home has. I would absolutely recommend him to any homeowner."

John C on January 2021

Lowry EcoSolutions is an independent energy auditing firm. We work for you the homeowner, not a contractor. We do not accept financial compensation from any contractor for any work. We offer sustainable and cost effective solutions to homeowners so that they may save money and valuable resources including electricity, natural gas, water, and other materials that our society often considers waste.

"Eric was quick to respond and to plan. He was friendly and easy to approach, fielded all of my questions during the assessment, and responded with the formal document in a timely fashion. He provided me with invaluable insight regarding the condition of my home's energy efficiency, was straightforward regarding what issues would provide the greatest return on investment, and immensely eased the triage of the many energy issues an old home has. I would absolutely recommend him to any homeowner."

John C on January 2021


ECI Comfort

4.91(
69
)

ECI Comfort

4.91(
69
)
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

For 20 years, ECI Comfort has been designing and installing high-efficiency HVAC systems throughout Bucks County and the surrounding areas. Through our work with Unico and Mitsubishi products, we are able to install high-performance, high-velocity systems in a variety of homes, specializing in those that do not or cannot encompass conventional ductwork. We also service and replace all makes and models of HVAC equipment, deliver home heating oil, install generators and perform energy assessments. Additional contact name - Chase Musser. Additional email - [email protected].

"ECI Comfort replaced our heat pump, which included the outside unit, inside air handler, and thermostat/control, in April of 2020. We paid competitive pricing. Our Trane system is still working like new! During our first regular servicing of the unit, the technician, Selinda Killing, found our Air Scrubber (a device to clean the air as it passes through the Air Handler) not working. That item was added to the Air Handler, free of charge, during installation. Today, the Ultra-Violet Bulb, which is the piece that does the actual cleaning in that Air Scrubber, was replaced by technician Mike Slawecki. That is working well, again! Ms Killing, Mr Slawecki, as well as the entire installation crew, in 2020, were totally professional and polite. Our Air Handler is in our attic, with not-easy-access in the master bedroom walk-in closet. The entry to the attic is 18" X 48", and everyone has handled that very small area without issue. Removing the replaced components, as well as, bringing in the new components, through that opening, was not easy. My wife and I have been quite pleased with all ECI has done for us. ECI Comfort is a first-class operation, and we would recommend them for all of your HVAC needs!"

Leigh N on January 2022

For 20 years, ECI Comfort has been designing and installing high-efficiency HVAC systems throughout Bucks County and the surrounding areas. Through our work with Unico and Mitsubishi products, we are able to install high-performance, high-velocity systems in a variety of homes, specializing in those that do not or cannot encompass conventional ductwork. We also service and replace all makes and models of HVAC equipment, deliver home heating oil, install generators and perform energy assessments. Additional contact name - Chase Musser. Additional email - [email protected].

"ECI Comfort replaced our heat pump, which included the outside unit, inside air handler, and thermostat/control, in April of 2020. We paid competitive pricing. Our Trane system is still working like new! During our first regular servicing of the unit, the technician, Selinda Killing, found our Air Scrubber (a device to clean the air as it passes through the Air Handler) not working. That item was added to the Air Handler, free of charge, during installation. Today, the Ultra-Violet Bulb, which is the piece that does the actual cleaning in that Air Scrubber, was replaced by technician Mike Slawecki. That is working well, again! Ms Killing, Mr Slawecki, as well as the entire installation crew, in 2020, were totally professional and polite. Our Air Handler is in our attic, with not-easy-access in the master bedroom walk-in closet. The entry to the attic is 18" X 48", and everyone has handled that very small area without issue. Removing the replaced components, as well as, bringing in the new components, through that opening, was not easy. My wife and I have been quite pleased with all ECI has done for us. ECI Comfort is a first-class operation, and we would recommend them for all of your HVAC needs!"

Leigh N on January 2022


Avatar for Green Stone Energy LLC

Green Stone Energy LLC

4.91(
66
)

Green Stone Energy LLC

4.91(
66
)
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Green Stone Energy LLC is a privately owned Company based in Southeastern Pennsylvania, servicing residential and commercial customers, in order to help improve their energy efficiency. Green Stone Energy LLC is committed to improving our customer's standard of living, by helping increase the energy efficiency of each home or building, thus helping lower yearly energy costs. We work closely with each customer to get the results they need, and strive for Total Customer Satisfaction.

"Couldn't have gone smoother. Workers had attic entrance contained and sealed off, wore their masks entire time, put down drop cloth to enter the home and cleaned up once completed. We were provided images of the attic completely cleaned and sanitized, and then images of new insulation added."

Laura H on November 2021

Green Stone Energy LLC is a privately owned Company based in Southeastern Pennsylvania, servicing residential and commercial customers, in order to help improve their energy efficiency. Green Stone Energy LLC is committed to improving our customer's standard of living, by helping increase the energy efficiency of each home or building, thus helping lower yearly energy costs. We work closely with each customer to get the results they need, and strive for Total Customer Satisfaction.

"Couldn't have gone smoother. Workers had attic entrance contained and sealed off, wore their masks entire time, put down drop cloth to enter the home and cleaned up once completed. We were provided images of the attic completely cleaned and sanitized, and then images of new insulation added."

Laura H on November 2021


Avatar for Sila Heating, Cooling, Plumbing and Electrical

Sila Heating, Cooling, Plumbing and Electrical

4.57(
1,697
)

Sila Heating, Cooling, Plumbing and Electrical

4.57(
1,697
)
Customers say: Super punctual
1989 years of experience

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"So far, the system has been working really well. Everyone involved in my project was professional and personable. We had a little tweaking to do on the finish work, but all of my issues were fixed promptly. I would recommend Sila."

Stacy S on October 2024

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"So far, the system has been working really well. Everyone involved in my project was professional and personable. We had a little tweaking to do on the finish work, but all of my issues were fixed promptly. I would recommend Sila."

Stacy S on October 2024


Avatar for Christian Heating Air Plumbing Electrical (Formerly MoreVent)

Christian Heating Air Plumbing Electrical (Formerly MoreVent)

4.85(
93
)

Christian Heating Air Plumbing Electrical (Formerly MoreVent)

4.85(
93
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

MoreVent provides you with excellent service, ranging from a minor repair to an entire system replacement. Call today and ask about our Free Services Estimate. We Are Available 24 Hours/Day For Reliable Emergency Service Call on MoreVent’s full HVAC service to bring comfort to your home in a timely manner when you experience an untimely breakdown.

"They are very efficient, courteous and they did a good job."

kathern g on June 2020

MoreVent provides you with excellent service, ranging from a minor repair to an entire system replacement. Call today and ask about our Free Services Estimate. We Are Available 24 Hours/Day For Reliable Emergency Service Call on MoreVent’s full HVAC service to bring comfort to your home in a timely manner when you experience an untimely breakdown.

"They are very efficient, courteous and they did a good job."

kathern g on June 2020


"DO NOT PURCHASE ANYTHING FROM ADAM MECHANICAL/SILA. I recently purchased a $22,000 HVAC unit that did not work from day one. They came out to find that the brand new system had a leak which took two full days to repair. Afterwards, I repeatedly asked Alex to show us how the system worked. That never happened. However, Alex called and texted repeatedly to get me to sign the paperwork so they could get paid. After he personally guaranteed me that if I had any problems he would return, I signed the paperwork. Now that the temperature has dropped, I tried turning on the heat and it doesn't work. They are telling me that it is debris in the system and want me to pay $1200 for a cleaning of a system that is only a couple of months old. The icing on the cake is that Alex will not return any of my calls or text. DO NOT NOT NOT USE THIS COMPANY FOR ANY REASON. YOU WILL REGRET IT!"

Diane B on October 2023

Adam Mechanical Heating, AC + Plumbing has been providing top-notch HVAC service, sales, repair and installation to Southeastern Pennsylvania since 2002. We are a family-owned and operated HVAC company. Our primary goal is to ensure 100% customer satisfaction.

"DO NOT PURCHASE ANYTHING FROM ADAM MECHANICAL/SILA. I recently purchased a $22,000 HVAC unit that did not work from day one. They came out to find that the brand new system had a leak which took two full days to repair. Afterwards, I repeatedly asked Alex to show us how the system worked. That never happened. However, Alex called and texted repeatedly to get me to sign the paperwork so they could get paid. After he personally guaranteed me that if I had any problems he would return, I signed the paperwork. Now that the temperature has dropped, I tried turning on the heat and it doesn't work. They are telling me that it is debris in the system and want me to pay $1200 for a cleaning of a system that is only a couple of months old. The icing on the cake is that Alex will not return any of my calls or text. DO NOT NOT NOT USE THIS COMPANY FOR ANY REASON. YOU WILL REGRET IT!"

Diane B on October 2023

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Energy Efficiency Auditing questions, answered by experts

An average, 400-square-foot electric heated driveways consume approximately $3 per hour in terms of electricity. The price may slightly fluctuate depending on your local energy cost. A simple formula to calculate your heated driveway’s total wattage consumption is by multiplying the square footage by 50 watts and then dividing it by 1,000 to get the kilowatt number. Multiply that with your local energy cost per hour and there you have the hourly operating cost.

You'll likely need more than great home staging to sell your home. Now is a great time to get to work on the curb appeal of your home . Hire local exterior painters and landscapers to coat the exterior of your home and bring it new life with some sprucing up.

Installing weather stripping or upgrading to insulated panels can improve efficiency.

Yes, energy-efficient windows really can make a difference. As long as energy-efficient windows are properly installed and maintained, they can reduce your energy bill and offer significant savings.

Yes, Tesla Powerwalls are worth the upfront costs, as you can recoup your investment within six to eight years. Plus, they provide peace of mind that you'll have power during a power outage, and, depending on the system you install, you can become energy-independent. While they may be more expensive than other solar power systems, they offer higher battery capacity and lifespan.

The Radnor, PA homeowners’ guide to energy efficiency auditing services

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

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