
Get matched with top energy efficiency auditors in South Windsor, CT
There are 2 highly-rated local energy efficiency auditors.
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Verified Reviews for Energy Efficiency Auditing pros in South Windsor, CT
*The Angi rating for Energy Efficiency Auditing companies in South Windsor, CT 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 South Windsor, CT 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 October 04, 2025
Find Energy efficiency auditors in South Windsor

HARP Home Services LLC
HARP Home Services LLC
We joined Angie's List in August of 2007 and have earned their Super Service Award every year since 2009 when they started that program. HARP Home Services, LLC is here to take care of all your heating and air conditioning needs. Whether you are looking for a free quote on a new central air conditioning system or are ready to install radiant floor heating or a new boiler for those chilly winter months, we're just a phone call (or e-mail) away. Residential & Commercial.
"We had a furnace installed by Harp on July 8th 2024 after it being diagnosed by their technician as to the reason our ac system was not functioning properly. That’s when our troubles with Harp began. The installation was not done properly, we needed 3 service calls to get the ac to work properly. The installers were sloppy. We cleaned up screws and wire and parts from the old furnace for weeks. When heating season began we noticed that the humidifier installed with the furnace was not operating. We scheduled an appointment to have it repaired and they called the day of the appointment and told us they couldn’t come that day and we had to reschedule, so reluctantly we did. They finally came and repaired it. From what the technician told me it was not wired properly. On January 21st 2025( the coldest night of the year) the furnace stopped working. We called Harp to get someone to come to repair it as we had no heat in below 0º weather I was told the best they could do is to come the next day between 2 and 6 pm. I tried to explain that this was an emergency but to no avail. I called my local oil company and they were at my door within 30 minutes( which I would’ve expected from the company who sold us the furnace) the repaired it quickly and told us that one f the wires on the control panel was not attached properly. It cost me $300. I would NOT recommend Harp to anyone. They are not reliable and do not stand behind their promises of service 24/7. Stay as far away from this company as possible. We are sorry we ever started with them."
John J on January 2025
We joined Angie's List in August of 2007 and have earned their Super Service Award every year since 2009 when they started that program. HARP Home Services, LLC is here to take care of all your heating and air conditioning needs. Whether you are looking for a free quote on a new central air conditioning system or are ready to install radiant floor heating or a new boiler for those chilly winter months, we're just a phone call (or e-mail) away. Residential & Commercial.
"We had a furnace installed by Harp on July 8th 2024 after it being diagnosed by their technician as to the reason our ac system was not functioning properly. That’s when our troubles with Harp began. The installation was not done properly, we needed 3 service calls to get the ac to work properly. The installers were sloppy. We cleaned up screws and wire and parts from the old furnace for weeks. When heating season began we noticed that the humidifier installed with the furnace was not operating. We scheduled an appointment to have it repaired and they called the day of the appointment and told us they couldn’t come that day and we had to reschedule, so reluctantly we did. They finally came and repaired it. From what the technician told me it was not wired properly. On January 21st 2025( the coldest night of the year) the furnace stopped working. We called Harp to get someone to come to repair it as we had no heat in below 0º weather I was told the best they could do is to come the next day between 2 and 6 pm. I tried to explain that this was an emergency but to no avail. I called my local oil company and they were at my door within 30 minutes( which I would’ve expected from the company who sold us the furnace) the repaired it quickly and told us that one f the wires on the control panel was not attached properly. It cost me $300. I would NOT recommend Harp to anyone. They are not reliable and do not stand behind their promises of service 24/7. Stay as far away from this company as possible. We are sorry we ever started with them."
John J on January 2025

Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
We have over 20 years of experience in the HVAC industry. Here at Omni Mechanical Services, LLC, we pride ourselves on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can throughout your particular task or project. Let us take care of all your home's HVAC needs, and find out for yourself why we have 4.75 stars on homeadvisor.com! Call us today at (860) 422-4314!
"Juan responded quickly on a Sunday afternoon. He was very knowledgeable and fixed the broken part. Fortunately, Juan had the part in his truck and was able to get my furnace working again. The service was impeccable! However, the weekend rates are expensive the service cost me $699 for installation of a $70 part. The 2-hour service call was $500 ($249 per hour)."
Darlene B on February 2021
We have over 20 years of experience in the HVAC industry. Here at Omni Mechanical Services, LLC, we pride ourselves on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can throughout your particular task or project. Let us take care of all your home's HVAC needs, and find out for yourself why we have 4.75 stars on homeadvisor.com! Call us today at (860) 422-4314!
"Juan responded quickly on a Sunday afternoon. He was very knowledgeable and fixed the broken part. Fortunately, Juan had the part in his truck and was able to get my furnace working again. The service was impeccable! However, the weekend rates are expensive the service cost me $699 for installation of a $70 part. The 2-hour service call was $500 ($249 per hour)."
Darlene B on February 2021
Rachel Solar Specialist
Rachel Solar Specialist
We pride our company on reliability, great communication, integrity, and quality work. We believe in giving our absolute best in all of our projects, no matter how big or small. You will find us to be competitively priced, with close attention to the details of each and every project. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business, so please ask us for references.
We pride our company on reliability, great communication, integrity, and quality work. We believe in giving our absolute best in all of our projects, no matter how big or small. You will find us to be competitively priced, with close attention to the details of each and every project. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business, so please ask us for references.
Insulation Solutions of CT, LLC
Insulation Solutions of CT, LLC
Insulation Solutions of CT, LLC proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!
"We were very pleased with the work. They actually left my basement cleaner then when they started. The crew was very friendly and professional. If you are looking for a crew that arrives on time and does the job completely, I totally recommend Insulation Solutions of CT."
Larry M on June 2020
Insulation Solutions of CT, LLC proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!
"We were very pleased with the work. They actually left my basement cleaner then when they started. The crew was very friendly and professional. If you are looking for a crew that arrives on time and does the job completely, I totally recommend Insulation Solutions of CT."
Larry M on June 2020

R. Pelton Builders, Inc.
R. Pelton Builders, Inc.
Ecosmart Home Services provides a comprehensive range of energy-saving solutions for homes. Offering a holistic approach to energy efficiency is crucial in today's environmentally conscious world. Our services cover various aspects of a home, addressing insulation, solar energy, HVAC, windows and doors, roofing, electrical upgrades, generators, and electric vehicle chargers. By offering this broad range of services, Ecosmart positions itself as a one-stop-shop for homeowners looking to enhance the energy efficiency and sustainability of their homes. It's important to communicate the long-term benefits, including potential cost savings and reduced environmental impact, to attract and educate potential customers.
"If I could give R. Pelton Builders, Inc. negative stars I would. I have worked with many contractors, architects, engineers and developers in my life good and bad. R. Pelton Builders, Inc. could be one of if not the worst company I have ever had the unfortunate privilege to work with. After signing up with them, they wasted almost 2 months of my time, misrepresenting timelines and expertise, mismanaging the process, communication and making multiple false statements along the way. I was clear from the outset that the time frame install the system was critical. They told me multiple times that permits had been filed when, in reality they never filed them at all. They did not even know the process to file permits in my town (another thing they had represented they had experience with) and did not even contact the town until the week we had initially targeted for the install. They told me they understood and had experience with Solar batteries. I had to design this part of the system myself because they had no clue what they were doing and were not even capable of effectively working with the vendor to design and solve for any issues that arose. They were terrible with communication, often telling me they would get back to me and never doing so. I had to chase them all the time. When you are spending any amount this would be unacceptable. I was spending over $100,000. 2 months into the agreement, after bailing on a site visit that I rearranged my schedule for, Michael P then called me to state that they would not install what they had agreed to and that Steve P (the owner) was no longer going to offer batteries as he did not trust them. But then I should just do the solar alone with them. I was clear from the beginning that the point of the project was to have a back up system not just a solar system. It seems to me that their plan from the beginning was to tell me what I wanted to hear and then pull the rug out from under me when the timing was such that I was in jeopardy of losing the full Federal Tax Credit and potentially the State incentives in hopes that I would adjust the install to solar only. Ultimately, they gave me no confidence that they were going to be able to successfully and properly install solar either. In my option and experience they are not to be trusted. My experience with them is that they are incredibly disorganized and inept, often gave me false and misleading statements and have real issues communicating at any level that would be considered acceptable. They also showed zero respect for my time or following through on what they had committed to do. All of this resulted in me losing time, money and expending a tremendous amount of effort for ultimately no reason. Simply horrendous on every level and I could not recommend a company less then R. Pelton Builders, Inc."
Welsey S on November 2020
Ecosmart Home Services provides a comprehensive range of energy-saving solutions for homes. Offering a holistic approach to energy efficiency is crucial in today's environmentally conscious world. Our services cover various aspects of a home, addressing insulation, solar energy, HVAC, windows and doors, roofing, electrical upgrades, generators, and electric vehicle chargers. By offering this broad range of services, Ecosmart positions itself as a one-stop-shop for homeowners looking to enhance the energy efficiency and sustainability of their homes. It's important to communicate the long-term benefits, including potential cost savings and reduced environmental impact, to attract and educate potential customers.
"If I could give R. Pelton Builders, Inc. negative stars I would. I have worked with many contractors, architects, engineers and developers in my life good and bad. R. Pelton Builders, Inc. could be one of if not the worst company I have ever had the unfortunate privilege to work with. After signing up with them, they wasted almost 2 months of my time, misrepresenting timelines and expertise, mismanaging the process, communication and making multiple false statements along the way. I was clear from the outset that the time frame install the system was critical. They told me multiple times that permits had been filed when, in reality they never filed them at all. They did not even know the process to file permits in my town (another thing they had represented they had experience with) and did not even contact the town until the week we had initially targeted for the install. They told me they understood and had experience with Solar batteries. I had to design this part of the system myself because they had no clue what they were doing and were not even capable of effectively working with the vendor to design and solve for any issues that arose. They were terrible with communication, often telling me they would get back to me and never doing so. I had to chase them all the time. When you are spending any amount this would be unacceptable. I was spending over $100,000. 2 months into the agreement, after bailing on a site visit that I rearranged my schedule for, Michael P then called me to state that they would not install what they had agreed to and that Steve P (the owner) was no longer going to offer batteries as he did not trust them. But then I should just do the solar alone with them. I was clear from the beginning that the point of the project was to have a back up system not just a solar system. It seems to me that their plan from the beginning was to tell me what I wanted to hear and then pull the rug out from under me when the timing was such that I was in jeopardy of losing the full Federal Tax Credit and potentially the State incentives in hopes that I would adjust the install to solar only. Ultimately, they gave me no confidence that they were going to be able to successfully and properly install solar either. In my option and experience they are not to be trusted. My experience with them is that they are incredibly disorganized and inept, often gave me false and misleading statements and have real issues communicating at any level that would be considered acceptable. They also showed zero respect for my time or following through on what they had committed to do. All of this resulted in me losing time, money and expending a tremendous amount of effort for ultimately no reason. Simply horrendous on every level and I could not recommend a company less then R. Pelton Builders, Inc."
Welsey S on November 2020
Homestead
Homestead
Here at Homestead we offer -New construction plumbing -Residential & Commercial Service -Well tanks & pumps -Drainage repairs We pride ourselves in quality and customer care. Homestead is a family owned business that has been in the industry over 30 years.
Here at Homestead we offer -New construction plumbing -Residential & Commercial Service -Well tanks & pumps -Drainage repairs We pride ourselves in quality and customer care. Homestead is a family owned business that has been in the industry over 30 years.
ELITE ENERGY
ELITE ENERGY
Please email, text, or call me! I can estimate your savings if you switch to solar or schedule an initial insulation installation inspection. I'll answer all your questions, discuss financial and installation options, and align on a timeline. It's time to kick the electric bill to the curb!
Please email, text, or call me! I can estimate your savings if you switch to solar or schedule an initial insulation installation inspection. I'll answer all your questions, discuss financial and installation options, and align on a timeline. It's time to kick the electric bill to the curb!
RSS Solar
RSS Solar
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.
Posigen
Posigen
Slash your utility bill so you can keep more of your hard-earned money Make your home more comfortable with our Energy Efficiency plan Gain more energy independence Produce clean energy to help the environment No money down nothing to buy and No credit or income minimums everyone qualifies In the wake of Hurricane Katrinas devastation the people of New Orleans sought to rebuild They wanted to make their homes better more efficient and more affordable During this time there were sixteen different programs available to help rebuild stronger but in practice these initiatives were only accessible to wealthy residents Low to moderate income families which made up quite a bit of the New Orleans population were not able to afford these home upgrades putting them at an even greater disadvantage compared to wealthier families PosiGens founders saw this disparity and wanted to do something about it We knew that we could help disadvantaged persons to rebuild their homes and re-establish their lives So we got to work Ultimately we decided that we could bring solar to lower income communities by selling it in a fundamentally different way than anyone else we base our sales on savings If a customer will not save money by going solar we wont install the system Why Because our focus is on our customer not on our wallets Our method quickly proved that it could work people were excited to invest in solar because it was making their lives better PosiGen quickly grew and we now install thousands of solar systems per year bringing solar and savings to families around the country
Slash your utility bill so you can keep more of your hard-earned money Make your home more comfortable with our Energy Efficiency plan Gain more energy independence Produce clean energy to help the environment No money down nothing to buy and No credit or income minimums everyone qualifies In the wake of Hurricane Katrinas devastation the people of New Orleans sought to rebuild They wanted to make their homes better more efficient and more affordable During this time there were sixteen different programs available to help rebuild stronger but in practice these initiatives were only accessible to wealthy residents Low to moderate income families which made up quite a bit of the New Orleans population were not able to afford these home upgrades putting them at an even greater disadvantage compared to wealthier families PosiGens founders saw this disparity and wanted to do something about it We knew that we could help disadvantaged persons to rebuild their homes and re-establish their lives So we got to work Ultimately we decided that we could bring solar to lower income communities by selling it in a fundamentally different way than anyone else we base our sales on savings If a customer will not save money by going solar we wont install the system Why Because our focus is on our customer not on our wallets Our method quickly proved that it could work people were excited to invest in solar because it was making their lives better PosiGen quickly grew and we now install thousands of solar systems per year bringing solar and savings to families around the country
PosiGen
PosiGen
My name is Thomas L. Kenney and I'm a remote Residential Energy Specialist at PosiGen. We offer solar and energy efficiency to homeowners all across Connecticut. We are the only solar company in the state with a formal agreement with the Connecticut Greenbank. We have monthly promotions as well to make the decision to go solar easy and affordable. No minimum income or credit score requirements needed with no money down.
"They took care of me beyond my expectations, they just finished their work today."
Marien Z on November 2021
My name is Thomas L. Kenney and I'm a remote Residential Energy Specialist at PosiGen. We offer solar and energy efficiency to homeowners all across Connecticut. We are the only solar company in the state with a formal agreement with the Connecticut Greenbank. We have monthly promotions as well to make the decision to go solar easy and affordable. No minimum income or credit score requirements needed with no money down.
"They took care of me beyond my expectations, they just finished their work today."
Marien Z on November 2021
The South Windsor, CT 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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Discover the average home energy audit cost, what impacts pricing, and how to save money on your audit with transparent, expert-backed cost info for homeowners.
Find out where homeowners spend the least and the most on house utilities like water, electricity, internet, cable, and natural gas.
A home energy audit is a detailed write-up of how to lower your utility bills and increase your comfort level. Find out if they’re worth the cost.
- •
Get a detailed breakdown of thermal imaging home inspection costs, including average prices, cost factors, and tips to help homeowners budget.
Home energy audits can identify ways to make your home more energy-efficient. Learn whether an energy audit is a good investment for your home.
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