Get matched with top energy efficiency auditors in Exton, PA
There are 11 highly-rated local energy efficiency auditors.
TRUSTED BY HOMEOWNERS
4.6 
21 Verified Reviews for Energy Efficiency Auditing pros in Exton, PA
*The Angi rating for Energy Efficiency Auditing companies in Exton, PA 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 Exton, PA 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 April 28, 2025
Energy efficiency auditors in Exton
HL Bowman has been in the same location for 38 years and owned by the same family for over 65 years. HL Bowman is a non commission based company. HL Bowman employees will never upsell you a product you don't need. Dennis and Bryan Enders and his family have deep roots in the Harrisburg community. After 65 years Dennis and family stay committed to giving the community the best possible service and product to fit their needs. HL Bowman has won Angie's List super service award every year.
"Quick to respond and honest about our options. Work was thoroughly explained."
Mackenzie H on March 2025
HL Bowman has been in the same location for 38 years and owned by the same family for over 65 years. HL Bowman is a non commission based company. HL Bowman employees will never upsell you a product you don't need. Dennis and Bryan Enders and his family have deep roots in the Harrisburg community. After 65 years Dennis and family stay committed to giving the community the best possible service and product to fit their needs. HL Bowman has won Angie's List super service award every year.
"Quick to respond and honest about our options. Work was thoroughly explained."
Mackenzie H on March 2025
"Helpful meets Helpful-Unique Indoor Comfort is now Ace Hardware Home Services, a fourth-generation heating, cooling, plumbing and electrical service company based in King of Prussia, PA. We are a customer service company that happens to excel in heating, air conditioning, plumbing and electrical home services. We have a unique reputation for superior service and quality craftsmanship --- but don't take our word for it --- Experience the Unique service firsthand." Providing HVAC service and repair, system replacement, and air conditioning solutions for older homes. Residential plumbing service, repair, emergency service, and water heaters. Electrical emergency service, repair, home upgrades, generators and EV Chargers.
"We could not be happier with choosing Unique Indoor Comfort for our new HVAC system. We found this company by being referred by a client of my husbands. The original duct work in our house was extremely undersized, over working our unit and not creating good airflow to reach the third floor of our town home. Reni came out to our home, and took the time to explain to me options with Unique to really make our new HVAC unit/system efficient and comfortable temperatures in our house. I really appreciated his kindness and patience with me with all my questions. Unique was able to get us scheduled within a week or finalizing the contract, just in time in end of April when the first heat wave hit. It has been almost two months now since Henry and Matt installed our new HVAC system (they both were friendly and did an excellent job) and we are truly enjoying it. With a new baby in the house, it is a relief to have this new unit and ability to cool down our house quickly and efficiently. I know it is a lot interviewing and getting quotes from different HVAC companies - it is a big investment. This company truly stood out for us and were able to work with our budget and our needs for our home. They were the only company who proposed how we could add an additional vent to allow more airflow, and to redo the duct work to the proper sizing for our house and up to code. We are very grateful and HIGHLY recommend Unique. Thank you Reni, Matt and Henry again!"
Andrea K on June 2024
"Helpful meets Helpful-Unique Indoor Comfort is now Ace Hardware Home Services, a fourth-generation heating, cooling, plumbing and electrical service company based in King of Prussia, PA. We are a customer service company that happens to excel in heating, air conditioning, plumbing and electrical home services. We have a unique reputation for superior service and quality craftsmanship --- but don't take our word for it --- Experience the Unique service firsthand." Providing HVAC service and repair, system replacement, and air conditioning solutions for older homes. Residential plumbing service, repair, emergency service, and water heaters. Electrical emergency service, repair, home upgrades, generators and EV Chargers.
"We could not be happier with choosing Unique Indoor Comfort for our new HVAC system. We found this company by being referred by a client of my husbands. The original duct work in our house was extremely undersized, over working our unit and not creating good airflow to reach the third floor of our town home. Reni came out to our home, and took the time to explain to me options with Unique to really make our new HVAC unit/system efficient and comfortable temperatures in our house. I really appreciated his kindness and patience with me with all my questions. Unique was able to get us scheduled within a week or finalizing the contract, just in time in end of April when the first heat wave hit. It has been almost two months now since Henry and Matt installed our new HVAC system (they both were friendly and did an excellent job) and we are truly enjoying it. With a new baby in the house, it is a relief to have this new unit and ability to cool down our house quickly and efficiently. I know it is a lot interviewing and getting quotes from different HVAC companies - it is a big investment. This company truly stood out for us and were able to work with our budget and our needs for our home. They were the only company who proposed how we could add an additional vent to allow more airflow, and to redo the duct work to the proper sizing for our house and up to code. We are very grateful and HIGHLY recommend Unique. Thank you Reni, Matt and Henry again!"
Andrea K on June 2024
Horizon Services is the region’s largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizon Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee. Horizon Services is the Heating Company Your Friends and Neighbors Call to Keep Warm All Winter Long!
"I had a very negative and unprofessional experience with Horizon Services. I signed a contract with them. When it was time to service my AC unit, they cancelled my appointment and rescheduled it, only to cancel and reschedule it again, and yet they did it again! They cancelled my AC maintenance appointment three times over nearly a month period. The scheduler kept cancelling the appointment a few minutes before the appointment time, which was very inconvenient for me because I had to be home every time they scheduled. After the third cancellation, I asked the scheduler to escalate the case to a supervisor which he told me he did. But the Horizon customer service manager never called me back. I called again and escalated again, still the Horizon customer service manager never called me back. I called at least twice after that and was told that my case was already escalated to a female manager, but still she never called me back. All I got from the Horizon phone operators was repeated empty promises that “someone will call you back in 12 hours, etc.” But they never called back to commit to either providing the AC maintenance service or cancelling my contract and refunding my money in full. What makes matters worse is that none of the Horizon Services phone operators who answered my repeated calls was able to transfer me to a manager to speak with in real time. These operators said that they could only “email the senior manager or the concern department”. What a disappointment, and what a lousy excuse to ignore a contracted customer. I truly regret hiring Horizon Service and signing a contract with them and I will never recommend them to anyone. The failure by Horizon Services to provide the AC maintenance per the contractual agreement (it’s now mid-summer and my aging AC unit was not serviced to date) and the fact that their customer service manager never bothered to respond to my repeated phone complaints speak volumes about the unprofessional way they have treated me."
Tarek S on July 2024
Horizon Services is the region’s largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizon Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee. Horizon Services is the Heating Company Your Friends and Neighbors Call to Keep Warm All Winter Long!
"I had a very negative and unprofessional experience with Horizon Services. I signed a contract with them. When it was time to service my AC unit, they cancelled my appointment and rescheduled it, only to cancel and reschedule it again, and yet they did it again! They cancelled my AC maintenance appointment three times over nearly a month period. The scheduler kept cancelling the appointment a few minutes before the appointment time, which was very inconvenient for me because I had to be home every time they scheduled. After the third cancellation, I asked the scheduler to escalate the case to a supervisor which he told me he did. But the Horizon customer service manager never called me back. I called again and escalated again, still the Horizon customer service manager never called me back. I called at least twice after that and was told that my case was already escalated to a female manager, but still she never called me back. All I got from the Horizon phone operators was repeated empty promises that “someone will call you back in 12 hours, etc.” But they never called back to commit to either providing the AC maintenance service or cancelling my contract and refunding my money in full. What makes matters worse is that none of the Horizon Services phone operators who answered my repeated calls was able to transfer me to a manager to speak with in real time. These operators said that they could only “email the senior manager or the concern department”. What a disappointment, and what a lousy excuse to ignore a contracted customer. I truly regret hiring Horizon Service and signing a contract with them and I will never recommend them to anyone. The failure by Horizon Services to provide the AC maintenance per the contractual agreement (it’s now mid-summer and my aging AC unit was not serviced to date) and the fact that their customer service manager never bothered to respond to my repeated phone complaints speak volumes about the unprofessional way they have treated me."
Tarek S on July 2024
Since 1977, Wm. Henderson Plumbing, Heating & Cooling Inc. has been providing quality plumbing, heating and cooling service throughout Delaware County and the Main Line. With a fleet of fully-stocked vehicles dispatched from our Broomall headquarters, we strive to provide our customers with prompt, professional service in the plumbing, heating and cooling fields. Wm. Henderson Plumbing, Heating & Cooling Inc. is a member of the Philadelphia Suburban Association of Plumbing Contractors, National Association of Plumbing Heating, Cooling Contractors, Philadelphia-Suburban Gas Exchange, Small Business Association of Delaware County and the Marple Business & Professional Association. Operating a dependable service business requires organization, competent management and professional technical skills. All service technicians have direct communication between the office and customers due to the state-of-the-art communication provided to each technician. We are dedicated to complete customer satisfaction. Our offices are staffed and open weekdays from 7:30 am to 6:30 pm, and on Saturdays from 8:00 am to 1:00 pm. In the event of an emergency, we are always available to you 24 hours a day, 7 days a week. We quote a price before proceeding with any work. We charge by the job, not by the hour, and all work is guaranteed. We are an award-winning company, but we couldn't win awards without happy customers. You are our priority! Additional DBAs - William Henderson Plumbing & Heating Cooling Services, Wm Henderson Plumbing & Heating Inc, Wm Henderson Plumbing Heating Cooling Service.
"Repair Service to Fix Gas Boiler - WM Henderson first sends out a tech who is not familiar with gas boilers and admits there is an issue but does not know how to diagnose it. I had to pay $89 for this. Instead of having the right person come out, I had to to actively call again to get someone else to come out. The 2nd tech diagnosed the issue, but wants to charge me the same $89 that I already paid. - and quotes me $380 for the repair - and has to order the part. I agree and then call back the next day to confirm part is on order - and they tell me the charge is $1,015. I asked to speak to a manager to discuss, and no one is available and no one calls me back. I bought the replacement part from a supply where house (confirming it works with my make/model of boiler) and it cost me $165. I have had other scheduling issues with them as well. Don't use them!!!!!!!!"
Jerry W on December 2024
Since 1977, Wm. Henderson Plumbing, Heating & Cooling Inc. has been providing quality plumbing, heating and cooling service throughout Delaware County and the Main Line. With a fleet of fully-stocked vehicles dispatched from our Broomall headquarters, we strive to provide our customers with prompt, professional service in the plumbing, heating and cooling fields. Wm. Henderson Plumbing, Heating & Cooling Inc. is a member of the Philadelphia Suburban Association of Plumbing Contractors, National Association of Plumbing Heating, Cooling Contractors, Philadelphia-Suburban Gas Exchange, Small Business Association of Delaware County and the Marple Business & Professional Association. Operating a dependable service business requires organization, competent management and professional technical skills. All service technicians have direct communication between the office and customers due to the state-of-the-art communication provided to each technician. We are dedicated to complete customer satisfaction. Our offices are staffed and open weekdays from 7:30 am to 6:30 pm, and on Saturdays from 8:00 am to 1:00 pm. In the event of an emergency, we are always available to you 24 hours a day, 7 days a week. We quote a price before proceeding with any work. We charge by the job, not by the hour, and all work is guaranteed. We are an award-winning company, but we couldn't win awards without happy customers. You are our priority! Additional DBAs - William Henderson Plumbing & Heating Cooling Services, Wm Henderson Plumbing & Heating Inc, Wm Henderson Plumbing Heating Cooling Service.
"Repair Service to Fix Gas Boiler - WM Henderson first sends out a tech who is not familiar with gas boilers and admits there is an issue but does not know how to diagnose it. I had to pay $89 for this. Instead of having the right person come out, I had to to actively call again to get someone else to come out. The 2nd tech diagnosed the issue, but wants to charge me the same $89 that I already paid. - and quotes me $380 for the repair - and has to order the part. I agree and then call back the next day to confirm part is on order - and they tell me the charge is $1,015. I asked to speak to a manager to discuss, and no one is available and no one calls me back. I bought the replacement part from a supply where house (confirming it works with my make/model of boiler) and it cost me $165. I have had other scheduling issues with them as well. Don't use them!!!!!!!!"
Jerry W on December 2024
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
Founded with creating a higher standard in the industry and providing superior customer service, Christian Heating, Cooling, Plumbing and Electrical has been serving the local community since 1989. At Christian, we take pride in employing service technicians who are well trained in their craft and dedicated to the satisfaction of our customers. For 35 years, our team has kept your family safe & comfortable. Our expert technicians receive weekly training to ensure that they are up to date on the latest equipment and service practices in our industry. We’re here for you 24/7 so don’t hesitate to contact us today.
Founded with creating a higher standard in the industry and providing superior customer service, Christian Heating, Cooling, Plumbing and Electrical has been serving the local community since 1989. At Christian, we take pride in employing service technicians who are well trained in their craft and dedicated to the satisfaction of our customers. For 35 years, our team has kept your family safe & comfortable. Our expert technicians receive weekly training to ensure that they are up to date on the latest equipment and service practices in our industry. We’re here for you 24/7 so don’t hesitate to contact us today.
Since 2008, DiBiase Heating and Cooling Company has been West Chester’s go-to source for heating, air conditioning, indoor air quality services, water heater services, and more! Available in Downington, Chester Springs, and all of the surrounding areas, we specialize in fast, effective workmanship and customer-focused service that leaves our customers 100% satisfied. From installations and replacements to preventative maintenance, our licensed, insured, trained, and certified team members take care of everything your equipment needs to keep your home environment comfortable, clean, and healthy. Our doors are open 24/7, and we’re always available to provide you with same-day appointments, virtual consultations, free proposals, and more. Call today to let our team make your home as comfortable as possible!
"though I appreciate the emergency Saturday service call (cost 169.00), I thought the additional charge of 303.00 (450.00) for a diagnostic check and repair ( no parts necessary - just less than a hour of manpower) was a bit exorbitant. perhaps I failed to realize that heating/ac personnel are paid on the equivalent scale as neurosurgeons."
Neil R on January 2023
Since 2008, DiBiase Heating and Cooling Company has been West Chester’s go-to source for heating, air conditioning, indoor air quality services, water heater services, and more! Available in Downington, Chester Springs, and all of the surrounding areas, we specialize in fast, effective workmanship and customer-focused service that leaves our customers 100% satisfied. From installations and replacements to preventative maintenance, our licensed, insured, trained, and certified team members take care of everything your equipment needs to keep your home environment comfortable, clean, and healthy. Our doors are open 24/7, and we’re always available to provide you with same-day appointments, virtual consultations, free proposals, and more. Call today to let our team make your home as comfortable as possible!
"though I appreciate the emergency Saturday service call (cost 169.00), I thought the additional charge of 303.00 (450.00) for a diagnostic check and repair ( no parts necessary - just less than a hour of manpower) was a bit exorbitant. perhaps I failed to realize that heating/ac personnel are paid on the equivalent scale as neurosurgeons."
Neil R on January 2023
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
2020 Proud Super Service Award winning company on Angie's List! With over 30 years of combined professional HVAC experience at ECC our comfort team of professionals are there to provide residential & commercial quality service & installation. We are your "Elite Fujitsu Ductless HVAC installers" and we offer our customers "peace of mind" with low-cost service plans that will prevent premature system failure, lower utility costs, optimize system performance & help provide healthier air quality for you & your family! Contact us today, we look forward to servicing you soon!
"We would like to submit a glowing review for the East Coast Comfort team. Tony and his team came to our house today to install a Fujitsu mini split heat pump in our attic room. They were on time, cordial, friendly, respectful, and they worked diligently to install our unit. We are extremely happy with the work they did and the new unit is working beautifully."
Tanja K on August 2022
2020 Proud Super Service Award winning company on Angie's List! With over 30 years of combined professional HVAC experience at ECC our comfort team of professionals are there to provide residential & commercial quality service & installation. We are your "Elite Fujitsu Ductless HVAC installers" and we offer our customers "peace of mind" with low-cost service plans that will prevent premature system failure, lower utility costs, optimize system performance & help provide healthier air quality for you & your family! Contact us today, we look forward to servicing you soon!
"We would like to submit a glowing review for the East Coast Comfort team. Tony and his team came to our house today to install a Fujitsu mini split heat pump in our attic room. They were on time, cordial, friendly, respectful, and they worked diligently to install our unit. We are extremely happy with the work they did and the new unit is working beautifully."
Tanja K on August 2022
We're like EMTs for your HVAC. We do Heating and Air Conditioning repair and install.
"tried to call the number shown here and I get an automated message that does not respond. Option 1 to request service keeps repeating the entire message after several times of hitting 1. Other options are trying to connect me to people names that I don't recognize"
mohamed f on July 2019
We're like EMTs for your HVAC. We do Heating and Air Conditioning repair and install.
"tried to call the number shown here and I get an automated message that does not respond. Option 1 to request service keeps repeating the entire message after several times of hitting 1. Other options are trying to connect me to people names that I don't recognize"
mohamed f on July 2019
Energy efficiency auditing services FAQs
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
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 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.
Get our Angi-powered app
