
Get matched with top energy efficiency auditors in Union, IL
Enter your zip and get matched with up to 5 pros
Need a pro for your energy efficiency auditing project in Union, IL?
TRUSTED BY UNION, IL HOMEOWNERS
4.5
Average homeowner rating33
Verified energy efficiency auditing services reviews
Verified Reviews for Energy Efficiency Auditing pros in Union, IL
*The Angi rating for Energy Efficiency Auditing companies in Union, IL 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 Union, IL 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 December 13, 2025
Find Energy efficiency auditors in Union

Perma-Seal Basement Systems
Perma-Seal Basement Systems
Perma-Seal specializes in protecting the value of your home backed by 45 years of serving the Chicagoland and NW Indiana areas. Our basement waterproofing stops leaks and flooding, our foundation repairs fix settling and bowed walls, and our crawl space solutions control humidity and improve air quality. Our concrete lifting and leveling service offers a reliable, quick, and highly effective way to repair your sunken, cracked driveway, patio, pool deck, or sidewalk for a fraction of the cost of replacement. Additionally, we provide yard drainage solutions, sewer and plumbing services, and home comfort solutions such as air sealing, and insulation to ensure your home remains in top condition. What sets us apart? Our commitment to superior customer service and our solid warranty. Any product or work covered by our warranty is serviced free of charge for the entire warranty period. Choose Perma-Seal for reliable, quality solutions to keep your home safe and comfortable.
"Jose and the team did a great job. Very professional and communicative. We're happy with the result and would recommend them."
ELAINE O on September 2025
Perma-Seal specializes in protecting the value of your home backed by 45 years of serving the Chicagoland and NW Indiana areas. Our basement waterproofing stops leaks and flooding, our foundation repairs fix settling and bowed walls, and our crawl space solutions control humidity and improve air quality. Our concrete lifting and leveling service offers a reliable, quick, and highly effective way to repair your sunken, cracked driveway, patio, pool deck, or sidewalk for a fraction of the cost of replacement. Additionally, we provide yard drainage solutions, sewer and plumbing services, and home comfort solutions such as air sealing, and insulation to ensure your home remains in top condition. What sets us apart? Our commitment to superior customer service and our solid warranty. Any product or work covered by our warranty is serviced free of charge for the entire warranty period. Choose Perma-Seal for reliable, quality solutions to keep your home safe and comfortable.
"Jose and the team did a great job. Very professional and communicative. We're happy with the result and would recommend them."
ELAINE O on September 2025

Daniel Nagel
Daniel Nagel
Get the B.E.S.T for your home (Building Energy Services and Testing) from ZENERGY LLC. We strive to help our clients find the 'ZEN' in their homes, that point where there improved comfort and the utility bills aren't emptying your pocket. We take a whole house approach to identify and resolve any issues within the home's attic, basement, or crawl space to improve the homes performance against the weather. Our services focus on targeted air sealing, increasing the insulation, installing proper ventilation, or making adjustments to the home to improve the comfort. ZENERGY is your one stop for full home energy auditing or home performance improvements. Let us help solve your homes energy consumption and comfort issues with our 3D approach. We are able to Discover the root cause of the issue. Design a solution for repair and Deliver the corrective action to improve the situation. WWW.greenzenergy.com 773-710-1090
"We reached out to Dan with the issue of freezing pipes and cold rooms in our old house. Dan inspected the house and proposed a plan to remedy these issues. Aside from the more traditional air sealing and insulation solutions, Dan also recommended insulating the area of our house above our soffit, which was difficult to access but that appeared to be a major insulation issue. I should add the other firms we requested quotes for did not identify this area in their proposal. I firmly believe the proposals from the other firms would not have fixed our issues. Dan worked for ~2 weeks on air sealing our attic and house, adding insulation to our attic, removing our soffit and adding insulation and reinstalling soffit. Work was done well and within budget and at a fair price. Dan is very easy to work with and takes pride in his work. We are very happy to report our pipes have not frozen and the cold rooms are no longer cold - would highly recommend Dan to others - he went above and beyond."
Daniel C on January 2023
Get the B.E.S.T for your home (Building Energy Services and Testing) from ZENERGY LLC. We strive to help our clients find the 'ZEN' in their homes, that point where there improved comfort and the utility bills aren't emptying your pocket. We take a whole house approach to identify and resolve any issues within the home's attic, basement, or crawl space to improve the homes performance against the weather. Our services focus on targeted air sealing, increasing the insulation, installing proper ventilation, or making adjustments to the home to improve the comfort. ZENERGY is your one stop for full home energy auditing or home performance improvements. Let us help solve your homes energy consumption and comfort issues with our 3D approach. We are able to Discover the root cause of the issue. Design a solution for repair and Deliver the corrective action to improve the situation. WWW.greenzenergy.com 773-710-1090
"We reached out to Dan with the issue of freezing pipes and cold rooms in our old house. Dan inspected the house and proposed a plan to remedy these issues. Aside from the more traditional air sealing and insulation solutions, Dan also recommended insulating the area of our house above our soffit, which was difficult to access but that appeared to be a major insulation issue. I should add the other firms we requested quotes for did not identify this area in their proposal. I firmly believe the proposals from the other firms would not have fixed our issues. Dan worked for ~2 weeks on air sealing our attic and house, adding insulation to our attic, removing our soffit and adding insulation and reinstalling soffit. Work was done well and within budget and at a fair price. Dan is very easy to work with and takes pride in his work. We are very happy to report our pipes have not frozen and the cold rooms are no longer cold - would highly recommend Dan to others - he went above and beyond."
Daniel C on January 2023

Domicile Consulting LLC
Domicile Consulting LLC
CALL or TEXT US at 312.488.1461. Additional contact Owner Mark Hughes at [email protected]; [email protected].
"I've used Domicile Consulting for several homes, after initially finding the company on Angie's List. Dan Cullen is exceptionally knowledgeable, objective and insightful. Prices are reasonable and well worth the investment. Dan takes copious pictures and compiles them in a handy report with recommendations. Highly recommended."
Christopher C on January 2020
CALL or TEXT US at 312.488.1461. Additional contact Owner Mark Hughes at [email protected]; [email protected].
"I've used Domicile Consulting for several homes, after initially finding the company on Angie's List. Dan Cullen is exceptionally knowledgeable, objective and insightful. Prices are reasonable and well worth the investment. Dan takes copious pictures and compiles them in a handy report with recommendations. Highly recommended."
Christopher C on January 2020

Hobson Plumbing & Heating Inc
Hobson Plumbing & Heating Inc
We are a family owned and operated residential and commercial plumbing, heating and cooling services company. We operate 24 hours a day. We have over 20 years of experience in the plumbing, heating and cooling industries and we guarantee the issue will be resolved quickly and efficiently the first time. Our licensed plumbers and HVAC techs accept all major credit cards, checks, and cash as payment when the job is complete .
"Very good, very professional. their price is competitive."
nancy p on June 2022
We are a family owned and operated residential and commercial plumbing, heating and cooling services company. We operate 24 hours a day. We have over 20 years of experience in the plumbing, heating and cooling industries and we guarantee the issue will be resolved quickly and efficiently the first time. Our licensed plumbers and HVAC techs accept all major credit cards, checks, and cash as payment when the job is complete .
"Very good, very professional. their price is competitive."
nancy p on June 2022

Energy360 Solutions Inc
Energy360 Solutions Inc
We are an energy-efficiency focused general contractor delivering Energy Audits, Insulation Services, Replacement Doors and Windows, and HVAC services. Our mission is to make your home or building perform as it was meant to, providing greater comfort for less money. Let the professionals at Energy360 Solutions find ways to lower your utility costs while increasing the overall comfort of your home or commercial building. The homes and buildings we occupy are more than a collection of unrelated parts. They are complex systems that require a holistic approach to discovering both the true dynamics of the problem and the full range of practical solutions. That’s the Energy360 Solutions advantage.
We are an energy-efficiency focused general contractor delivering Energy Audits, Insulation Services, Replacement Doors and Windows, and HVAC services. Our mission is to make your home or building perform as it was meant to, providing greater comfort for less money. Let the professionals at Energy360 Solutions find ways to lower your utility costs while increasing the overall comfort of your home or commercial building. The homes and buildings we occupy are more than a collection of unrelated parts. They are complex systems that require a holistic approach to discovering both the true dynamics of the problem and the full range of practical solutions. That’s the Energy360 Solutions advantage.

DRF Water Heating Solutions
DRF Water Heating Solutions
Since 2004, DRF Water Heating Solutions has provided reliable and expert service for water heater and plumbing needs. We are Chicagoland's leading installer of all types of water heaters, and pride ourselves on offering same-day service and a hassle-free experience. Our team is fully licensed, ensuring you receive professional and dependable service every time. For a free no-obligation quote, call us and a trained Water Solutions Advisor will assist you. Or visit our website and complete a short survey to obtain an instant quote online. For a hassle-free experience, 1-year price guarantee and the best warranty, select DRF for your water heater and plumbing needs. IDPH plumbing license # 055-028138.
"Robert and Jorge did an excellent job removing my old laundry room sink and cabinet and installing the new one. I am very happy with the quality of their work and their attention to detail. Robert and Jorge were very knowledgeable and friendly and had a commitment to customer satisfaction. They were resourceful when faced with a potential plumbing issue and quickly resolved the problem."
Roland L on November 2025
Since 2004, DRF Water Heating Solutions has provided reliable and expert service for water heater and plumbing needs. We are Chicagoland's leading installer of all types of water heaters, and pride ourselves on offering same-day service and a hassle-free experience. Our team is fully licensed, ensuring you receive professional and dependable service every time. For a free no-obligation quote, call us and a trained Water Solutions Advisor will assist you. Or visit our website and complete a short survey to obtain an instant quote online. For a hassle-free experience, 1-year price guarantee and the best warranty, select DRF for your water heater and plumbing needs. IDPH plumbing license # 055-028138.
"Robert and Jorge did an excellent job removing my old laundry room sink and cabinet and installing the new one. I am very happy with the quality of their work and their attention to detail. Robert and Jorge were very knowledgeable and friendly and had a commitment to customer satisfaction. They were resourceful when faced with a potential plumbing issue and quickly resolved the problem."
Roland L on November 2025

THE ATTIC EXPERTS
THE ATTIC EXPERTS
Attic Insulation & Ventilation: Attic Insulation, Attic Fans, Bathroom Exhaust Fans, QuietCool Pro Series Whole-house Fans, Roof Vents, Soffit Vents, Eave Vents, Baffles, Gap & Crack Fireblock Sealant.
"They recommended and performed services that did not correct our problem. Our bedrooms are still cold and when I called asking for them to come back out they never got back to me."
Angela P on March 2022
Attic Insulation & Ventilation: Attic Insulation, Attic Fans, Bathroom Exhaust Fans, QuietCool Pro Series Whole-house Fans, Roof Vents, Soffit Vents, Eave Vents, Baffles, Gap & Crack Fireblock Sealant.
"They recommended and performed services that did not correct our problem. Our bedrooms are still cold and when I called asking for them to come back out they never got back to me."
Angela P on March 2022

SAFE Electrical Service
SAFE Electrical Service
For over 20 years, we have provided all of Chicago and the surrounding areas with the highest quality electrical service. Our electricians are thoroughly trained to be in your home, they are courteous, will answer any question about your electrical situation, and will even wear shoe covers to help keep your home clean. All backed by our 100% Personal Satisfaction Guarantee. Our Master Electrician, Charles Otstott, has over 20 years’ experience as a residential and commercial electrician. He has a strong work ethic and is dedicated to safety. He also takes great pride in keeping the job as clean as he found it. He is a certified Generac Generator technician and an expert in trouble shooting power outages. We do not sub-contract our work, ever. You are the most important person from the time you call us- Guaranteed!!!
"I would hire SAFE Electric again and again and again! They are prompt, responsive, fair, efficient, courteous, respectful, etc. I have the highest recommendation for this company. Their customer service is top-notch and I'm grateful to have a company I can call when stuff just stops working or if I need to upgrade my lighting fixtures. I appreciate how they explain everything that needs to be done and what they did. You will not be disappointed. It wouldn't be hyperbole to say it will be the best home repair experience you will ever have."
MARGUERITE G on December 2024
For over 20 years, we have provided all of Chicago and the surrounding areas with the highest quality electrical service. Our electricians are thoroughly trained to be in your home, they are courteous, will answer any question about your electrical situation, and will even wear shoe covers to help keep your home clean. All backed by our 100% Personal Satisfaction Guarantee. Our Master Electrician, Charles Otstott, has over 20 years’ experience as a residential and commercial electrician. He has a strong work ethic and is dedicated to safety. He also takes great pride in keeping the job as clean as he found it. He is a certified Generac Generator technician and an expert in trouble shooting power outages. We do not sub-contract our work, ever. You are the most important person from the time you call us- Guaranteed!!!
"I would hire SAFE Electric again and again and again! They are prompt, responsive, fair, efficient, courteous, respectful, etc. I have the highest recommendation for this company. Their customer service is top-notch and I'm grateful to have a company I can call when stuff just stops working or if I need to upgrade my lighting fixtures. I appreciate how they explain everything that needs to be done and what they did. You will not be disappointed. It wouldn't be hyperbole to say it will be the best home repair experience you will ever have."
MARGUERITE G on December 2024

Building Energy Experts Insulation and Supply
Building Energy Experts Insulation and Supply
Building Energy Experts is the leading building energy auditor, energy retrofit, blow and spray foam insulation, led lighting, and alternative energy specialist for government, commercial, and residential applications since 2008. Building energy experts looks at your building as a complex system, we run a series of diagnostic tests to pinpoint exactly why your building isn’t as energy efficient, healthy, comfortable, and green as it should be. The results of our tests tell us exactly how to improve your building. BPI certified building scientists. Nicor/ Peoples Gas/ North Shore Gas/ ComEd Energy Smart Contractor.
"We just had our attic and crawl space insulated and a moisture barrier put in. The crew showed up on time and every one of them was polite and professional. We could tell they had a lot of experience working together because they were super organized. While the boss, Dave, walked us through the process in detail, making sure we understood the job, behind him the crew set up quickly and efficiently, treating our home with respect. They were finished right on time, too, and left our house looking as if they had never been there. Before they left, Dave showed us their work and explained how these improvements would make our home more energy efficient. Every crew member made sure to say goodbye to us. They were amazing people! We highly recommend Building Energy Experts."
Eve S on May 2024
Building Energy Experts is the leading building energy auditor, energy retrofit, blow and spray foam insulation, led lighting, and alternative energy specialist for government, commercial, and residential applications since 2008. Building energy experts looks at your building as a complex system, we run a series of diagnostic tests to pinpoint exactly why your building isn’t as energy efficient, healthy, comfortable, and green as it should be. The results of our tests tell us exactly how to improve your building. BPI certified building scientists. Nicor/ Peoples Gas/ North Shore Gas/ ComEd Energy Smart Contractor.
"We just had our attic and crawl space insulated and a moisture barrier put in. The crew showed up on time and every one of them was polite and professional. We could tell they had a lot of experience working together because they were super organized. While the boss, Dave, walked us through the process in detail, making sure we understood the job, behind him the crew set up quickly and efficiently, treating our home with respect. They were finished right on time, too, and left our house looking as if they had never been there. Before they left, Dave showed us their work and explained how these improvements would make our home more energy efficient. Every crew member made sure to say goodbye to us. They were amazing people! We highly recommend Building Energy Experts."
Eve S on May 2024

Dowe and Wagner, Inc.
Dowe and Wagner, Inc.
Heating, Ventilation & Air Conditioning Services for seventy eight years, Dowe and Wagner, Inc. have provided Southeastern Wisconsin’s & Northeastern Illinois’s residential and commercial HVAC customers with all season, in-door comfort. We maintain and repair all makes & models. Our Reputation When you ask our customers about us, we are confident you will be pleasantly surprised with their answers. We work hard to keep our customers happy. We provide referrals upon request. We have many sources at our disposal to obtain any part of your heating and cooling needs. We will stop at nothing to get proper parts to repair your system. Experience, We keep our servicemen up-to-date on the latest changes in the industry through regular schooling. Our technicians average 40 hours per year of industry training. This translates to less errors in diagnosing any needed repairs. Dependability, we go out of our way to insure that your heating and cooling problems are tracked down and repaired as soon as humanly possible. Reliability, We follow the strictest practice standards set by Bryant and have the position of Factory Authorized Dealer. Concern, No one enjoys an unexpected breakdown. We offer both preventative maintenance and full service agreements to insure that your equipment is operating at its peak efficiency. Energy Conservation We believe you should enjoy your system’s full efficiency at the lowest cost possible, so our sales staff is trained to choose the proper size of equipment for every job.
"We had a 20+ year old furnace that finally gave out on us. The technician, Ted, who replaced the furnace was very nice, respectful, and efficient. We had the new unit installed and running that same day! Very pleased and would highly recommend this company."
Nathaniel H on December 2023
Heating, Ventilation & Air Conditioning Services for seventy eight years, Dowe and Wagner, Inc. have provided Southeastern Wisconsin’s & Northeastern Illinois’s residential and commercial HVAC customers with all season, in-door comfort. We maintain and repair all makes & models. Our Reputation When you ask our customers about us, we are confident you will be pleasantly surprised with their answers. We work hard to keep our customers happy. We provide referrals upon request. We have many sources at our disposal to obtain any part of your heating and cooling needs. We will stop at nothing to get proper parts to repair your system. Experience, We keep our servicemen up-to-date on the latest changes in the industry through regular schooling. Our technicians average 40 hours per year of industry training. This translates to less errors in diagnosing any needed repairs. Dependability, we go out of our way to insure that your heating and cooling problems are tracked down and repaired as soon as humanly possible. Reliability, We follow the strictest practice standards set by Bryant and have the position of Factory Authorized Dealer. Concern, No one enjoys an unexpected breakdown. We offer both preventative maintenance and full service agreements to insure that your equipment is operating at its peak efficiency. Energy Conservation We believe you should enjoy your system’s full efficiency at the lowest cost possible, so our sales staff is trained to choose the proper size of equipment for every job.
"We had a 20+ year old furnace that finally gave out on us. The technician, Ted, who replaced the furnace was very nice, respectful, and efficient. We had the new unit installed and running that same day! Very pleased and would highly recommend this company."
Nathaniel H on December 2023
The Union, IL homeowners’ guide to energy efficiency auditing services
From average costs to expert advice, get all the answers you need to get your job done.
•Discover the average home energy audit cost, what impacts pricing, and how to save money on your audit. Get transparent, expert-backed cost info for homeowners.

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.
- Huntley, IL Energy efficiency auditors
- Marengo, IL Energy efficiency auditors
- Hampshire, IL Energy efficiency auditors
- Pingree Grove, IL Energy efficiency auditors
- Woodstock, IL Energy efficiency auditors
- Bully Valley, IL Energy efficiency auditors
- Crystal Lake, IL Energy efficiency auditors
- Lake In The Hills, IL Energy efficiency auditors
- Algonquin, IL Energy efficiency auditors
- Genoa, IL Energy efficiency auditors
- Burlington, IL Energy efficiency auditors
- Gilberts, IL Energy efficiency auditors
- Prairie Grove, IL Energy efficiency auditors
- East Dundee, IL Energy efficiency auditors
- West Dundee, IL Energy efficiency auditors
- Sleepy Hollow, IL Energy efficiency auditors
- Harvard, IL Energy efficiency auditors
- Cary, IL Energy efficiency auditors
- Oakwood Hills, IL Energy efficiency auditors
- Wonder Lake, IL Energy efficiency auditors
- Carpentersville, IL Energy efficiency auditors
- Mchenry, IL Energy efficiency auditors
- Fox River Grove, IL Energy efficiency auditors
- Johnsburg, IL Energy efficiency auditors
- Lakemoor, IL Energy efficiency auditors
- Mccullom Lake, IL Energy efficiency auditors
- Volo, IL Energy efficiency auditors
- Kingston, IL Energy efficiency auditors
- Island Lake, IL Energy efficiency auditors
- Belvidere, IL Energy efficiency auditors
- Landscaping Hardscaping And Pavers in Union
- Painting in Union
- Stone And Gravel in Union
- Garbage Collection in Union
- Lawn And Yard Work in Union
- Roofing in Union
- Electrical in Union
- Landscaping in Union
- Land Surveying in Union
- Chimney Sweep in Union
- Cleaning in Union
- Mailbox Repair in Union
- Deck Maintenance in Union
- Kitchen And Bath Remodeling in Union
- Home Automation in Union
- Concrete Driveways in Union
- Garage Doors in Union
- Fencing in Union
- Tree Service in Union
- Septic Tank in Union
- Structural Engineering in Union
- Home And Garage Organization in Union
- Swimming Pools in Union
- Plumbing in Union
- Handyman Service in Union
- Glass Block in Union
- Concrete Repair in Union
- Exterior Painting in Union
- Moving in Union
- Contractor in Union
- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"






