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    Average homeowner rating
  • Verified reviews icon20
    Verified energy efficiency auditing services reviews

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"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


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 NP Energy Inc.

NP Energy Inc.

4.93(
30
)

NP Energy Inc.

4.93(
30
)
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

We specialize in all your insulation needs! Closed Cell Spray Foam, Injection Foam, Blown In Insulation, Closed cavity dense packing and sound proofing, Air Sealing, Batting Insulation and Removal of Existing Insulation. We are family owned and operated and have over 25 years of experience! We have the highest standards in the industry! Customer satisfaction guaranteed!

"Craig came out to provide an estimate within a week of contact. He Surveyed the attic and gave recommendations on other considerations eg sealing recessed lighting. He walked me through the process and science. I accepted the quote and contractors were on the scene within 3 days! Completed the job, despite high temperatures. Cleaned up well afterwards. Really notice the difference already. Great job!"

Ruth H on July 2019

We specialize in all your insulation needs! Closed Cell Spray Foam, Injection Foam, Blown In Insulation, Closed cavity dense packing and sound proofing, Air Sealing, Batting Insulation and Removal of Existing Insulation. We are family owned and operated and have over 25 years of experience! We have the highest standards in the industry! Customer satisfaction guaranteed!

"Craig came out to provide an estimate within a week of contact. He Surveyed the attic and gave recommendations on other considerations eg sealing recessed lighting. He walked me through the process and science. I accepted the quote and contractors were on the scene within 3 days! Completed the job, despite high temperatures. Cleaned up well afterwards. Really notice the difference already. Great job!"

Ruth H on July 2019


"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


Avatar for Oliver Heating, Cooling, Plumbing, & Electrical

Oliver Heating, Cooling, Plumbing, & Electrical

4.70(
564
)

Oliver Heating, Cooling, Plumbing, & Electrical

4.70(
564
)
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

Since 1971, Oliver has been proudly serving the Delaware, Chester, and Montgomery counties of Pennsylvania as well as New Castle County in Delaware and Gloucester County in New Jersey. Today, we are still the Delaware Valley's premier provider of HVAC services, offering quality heating, cooling, plumbing, and electrical solutions to residents in the area. Oliver furnishes, installs, and services most types of heating, ventilation, and cooling equipment. We also offer services in plumbing, water heaters, electrical, geothermal, solar, and air duct cleaning for residential, commercial, and industrial markets. When it comes to our HVAC services, our friendly and trained professionals are prepared to help you 24 hours a day, 7 days a week. Our plan is to continue to differentiate ourselves from the rest of our HVAC competitors through unique positioning, strong history and ongoing commitment to providing superior and unparalleled customer service. We look forward to helping you with your air conditioning, heating, plumbing and electrical needs. Contact us today at 877-757-1141!

"Facts: contacted company to schedule service. Two weeks before electrician would arrive. Electricians arrived on time. Review electrical problems with technicians (two showed up). Left electricians to survey the home's electrical system. Met with electricians about current immediate problem. Agreed that the state of the system required someone specializing in old homes with legacy electrical wiring. Technicians informed me they had someone on staff who could survey the home and provide solutions to remedy the existing problem and possible overhaul of the system. They said they would escalate the problem to the appropriate person. I asked when is a reasonable time to wait before hearing back from the company. They said by the end of the week. I asked again how long to hear back - thinking that the end of the week was optimistic since it took them two weeks to get to the house. They said again by the end of the week. I waited until the following Wednesday and after not hearing anything from them left a review on the company website. Later that day a manager contacted me to discuss my review. NOT to discuss the possibility of getting someone out to the house but specifically the review. He stated a technician called me the day after the technicians were at the house. I have a smartphone they record ALL incoming and outgoing phone numbers. NO number from anyone I didn't know showed up in the phone log. NONE. And if he had called and received no answer NO one from the office bothered to follow up either by phone or by email or by text message. To the people at Oliver, welcome to the 21-century. How about using some the technology available to you for something besides swiping my credit card for the "arrival fee". DO NOT HIRE this company for ANYTHING! And BTW, another company I contacted for the same issue has sent me three text messages to follow up on the appointment that hasn't even happened yet. And I didn't have to wait two weeks to get on the schedule. Oliver, take a hint!"

Lochlain L on February 2022

Since 1971, Oliver has been proudly serving the Delaware, Chester, and Montgomery counties of Pennsylvania as well as New Castle County in Delaware and Gloucester County in New Jersey. Today, we are still the Delaware Valley's premier provider of HVAC services, offering quality heating, cooling, plumbing, and electrical solutions to residents in the area. Oliver furnishes, installs, and services most types of heating, ventilation, and cooling equipment. We also offer services in plumbing, water heaters, electrical, geothermal, solar, and air duct cleaning for residential, commercial, and industrial markets. When it comes to our HVAC services, our friendly and trained professionals are prepared to help you 24 hours a day, 7 days a week. Our plan is to continue to differentiate ourselves from the rest of our HVAC competitors through unique positioning, strong history and ongoing commitment to providing superior and unparalleled customer service. We look forward to helping you with your air conditioning, heating, plumbing and electrical needs. Contact us today at 877-757-1141!

"Facts: contacted company to schedule service. Two weeks before electrician would arrive. Electricians arrived on time. Review electrical problems with technicians (two showed up). Left electricians to survey the home's electrical system. Met with electricians about current immediate problem. Agreed that the state of the system required someone specializing in old homes with legacy electrical wiring. Technicians informed me they had someone on staff who could survey the home and provide solutions to remedy the existing problem and possible overhaul of the system. They said they would escalate the problem to the appropriate person. I asked when is a reasonable time to wait before hearing back from the company. They said by the end of the week. I asked again how long to hear back - thinking that the end of the week was optimistic since it took them two weeks to get to the house. They said again by the end of the week. I waited until the following Wednesday and after not hearing anything from them left a review on the company website. Later that day a manager contacted me to discuss my review. NOT to discuss the possibility of getting someone out to the house but specifically the review. He stated a technician called me the day after the technicians were at the house. I have a smartphone they record ALL incoming and outgoing phone numbers. NO number from anyone I didn't know showed up in the phone log. NONE. And if he had called and received no answer NO one from the office bothered to follow up either by phone or by email or by text message. To the people at Oliver, welcome to the 21-century. How about using some the technology available to you for something besides swiping my credit card for the "arrival fee". DO NOT HIRE this company for ANYTHING! And BTW, another company I contacted for the same issue has sent me three text messages to follow up on the appointment that hasn't even happened yet. And I didn't have to wait two weeks to get on the schedule. Oliver, take a hint!"

Lochlain L on February 2022


Avatar for Remodeling Concepts

Remodeling Concepts

4.64(
279
)

Remodeling Concepts

4.64(
279
)
Customers say: Super punctual
2002 years of experience

Remodeling Concepts has rapidly expanded throughout the years on account of numerous referrals from our satisfied customers. We strive on the philosophy of providing every customer with our utmost attention to detail, quality materials and superior craftsmanship. We know that every customer should receive 100% satisfaction regardless of the size or cost of the job. We are proud to be an Award Winning Home Remodeling Business in the Philadelphia Metro Area.

"Excellent! Could not be happier with the work. They fixed the leak, fully repaired the area and found a 100% match for our existing siding. You can’t even tell it was repaired. Great price, communication, and professionalism!"

Colleen H on May 2019

Remodeling Concepts has rapidly expanded throughout the years on account of numerous referrals from our satisfied customers. We strive on the philosophy of providing every customer with our utmost attention to detail, quality materials and superior craftsmanship. We know that every customer should receive 100% satisfaction regardless of the size or cost of the job. We are proud to be an Award Winning Home Remodeling Business in the Philadelphia Metro Area.

"Excellent! Could not be happier with the work. They fixed the leak, fully repaired the area and found a 100% match for our existing siding. You can’t even tell it was repaired. Great price, communication, and professionalism!"

Colleen H on May 2019

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Energy Efficiency Auditing questions, answered by experts

A small sump pump running infrequently uses an average of 10 kilowatt-hours (kWh) of electricity per month. The average cost for electricity is $0.171 per kWh. The size and use frequency affect how much electricity it uses. Sump pumps average one-third to one horsepower (hp) motors. One hp is equal to 745.7 watts. Watts multiplied by the time your pump is running divided by 1,000 equals your average kWh. Multiply kWh by your average cost of electricity. In areas with high rain or a marsh basin, the average cost can be as high as $15-$25 a month.

Leaving vents open but closing doors in unused rooms will probably not save money on your energy bill. Closed doors prevent the natural flow of air throughout the home, which could reduce the efficiency of the overall HVAC system. They could also restrict airflow into and through the return vents, making the HVAC system less efficient.

Some types of electric fireplaces use more electricity than others. Models that produce 1,500 watts will have more of an effect on your heating bill than 750-watt models. 

Electric fireplaces use an average of $1.85 of electricity every eight hours. These minimal operational costs aren’t likely to make a big difference in your electric bill—unless you’re using it as a primary heating source for your home and it’s running most of the time.

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.

After you receive your audit and report, review the findings and determine which of the prescribed changes you want to make to improve your home’s energy efficiency. Start by contacting the type of professionals recommended by the auditor who can help you remedy the issues discovered during the audit. Prioritize the projects by urgency, importance, and budget. Then, gather estimates from several professionals, remembering to verify any necessary licensing and experience information.

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

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