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  • Average homeowner rating star icon4.7
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  • Verified reviews icon30
    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Saint Charles

Avatar for ARC Insulation, Inc.

ARC Insulation, Inc.

4.91(
43
)
Approved Pro

ARC Insulation, Inc.

4.91(
43
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1993 years of experience

ARC Insulation, has been insulating homes in the Chicagoland area for over 27 years. Our staff of friendly professional Energy Auditors can assess your home and provide you with a free energy consultation offering the best most cost-effective solutions customized for your home and budget. Our mission is to help our customers make their homes more comfortable, safe and energy efficient. Because every home is unique, ARC Insulation specializes in all types of safe and efficient insulation, Cellulose, Spray Foam and Fiberglass. We also offer services Energy Audits, New Construction Modeling, Energy Consulting and Mold Remediation. A home energy upgrade costs less than you think. Stop wasting money and start saving on your home energy costs year-round! Call ARC Insulation today.

"X"

Kenneth J on April 2024

ARC Insulation, has been insulating homes in the Chicagoland area for over 27 years. Our staff of friendly professional Energy Auditors can assess your home and provide you with a free energy consultation offering the best most cost-effective solutions customized for your home and budget. Our mission is to help our customers make their homes more comfortable, safe and energy efficient. Because every home is unique, ARC Insulation specializes in all types of safe and efficient insulation, Cellulose, Spray Foam and Fiberglass. We also offer services Energy Audits, New Construction Modeling, Energy Consulting and Mold Remediation. A home energy upgrade costs less than you think. Stop wasting money and start saving on your home energy costs year-round! Call ARC Insulation today.

"X"

Kenneth J on April 2024


Avatar for Perma-Seal Basement Systems

Perma-Seal Basement Systems

4.56(
1,162
)
Approved Pro

Perma-Seal Basement Systems

4.56(
1,162
)
Approved Pro
Customers say: Super punctual
1979 years of experience
Free onsite estimate

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.

"Great job! Delivered exactly what was promised. Efficient and professional. "

Nemura P on December 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.

"Great job! Delivered exactly what was promised. Efficient and professional. "

Nemura P on December 2025


Avatar for Daniel Nagel

Daniel Nagel

4.90(
37
)
Approved Pro

Daniel Nagel

4.90(
37
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2014 years of experience

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


"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


Avatar for Hobson Plumbing & Heating Inc

Hobson Plumbing & Heating Inc

4.88(
169
)

Hobson Plumbing & Heating Inc

4.88(
169
)
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

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


Beery Heating & Cooling Plumbing & Electrical

4.93(
54
)

Beery Heating & Cooling Plumbing & Electrical

4.93(
54
)
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

We are a family owned and operated business, and have been serving the community since 1980. We have a full fleet of service, installation, and comfort consultants to take care of your every need. Whether it be Heating or Air Conditioning, Electrical or Plumbing we guarantee 100% customer satisfaction. We are fully licensed, insured, and bonded, and we do NOT use subcontractors. Our Maintenance program is second to none, for our customers that invest in our Universal Savings Agreement, we never charge them overtime no matter what time of day or day of the week, 15% off all parts & labor, 5 year Parts & Labor on repairs (excluding compressors and heat exchangers), priority scheduling. Call now to have your Home Comfort System serviced by the best. Residential And Commercial Plumbing & Electrical.

"John and his team could not have been more professional. We lost heat in one of our office spaces . They responded and came out that same day. Diagnosed the problem, gave options without being pushy and explained all the pros and cons of each. The work was done on time. Our office space was clean and the crew were wonderful to work with."

david j on January 2025

We are a family owned and operated business, and have been serving the community since 1980. We have a full fleet of service, installation, and comfort consultants to take care of your every need. Whether it be Heating or Air Conditioning, Electrical or Plumbing we guarantee 100% customer satisfaction. We are fully licensed, insured, and bonded, and we do NOT use subcontractors. Our Maintenance program is second to none, for our customers that invest in our Universal Savings Agreement, we never charge them overtime no matter what time of day or day of the week, 15% off all parts & labor, 5 year Parts & Labor on repairs (excluding compressors and heat exchangers), priority scheduling. Call now to have your Home Comfort System serviced by the best. Residential And Commercial Plumbing & Electrical.

"John and his team could not have been more professional. We lost heat in one of our office spaces . They responded and came out that same day. Diagnosed the problem, gave options without being pushy and explained all the pros and cons of each. The work was done on time. Our office space was clean and the crew were wonderful to work with."

david j on January 2025


B-K Installations of Illinois, Inc

4.97(
31
)

B-K Installations of Illinois, Inc

4.97(
31
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

30 YEAR FAMILY OWNED BUSINESS, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS WITH 24/7 EMERGENCY SERVICE! SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE ARE DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME.

"Great service and responsiveness. Tyler did a great job of showing and explaining the problem part and how it relates to the efficiency of the furnace. Very reasonable price for part and service. Will definitely use B&K in the future. Highly recommended."

Brian B on March 2020

30 YEAR FAMILY OWNED BUSINESS, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS WITH 24/7 EMERGENCY SERVICE! SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE ARE DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME.

"Great service and responsiveness. Tyler did a great job of showing and explaining the problem part and how it relates to the efficiency of the furnace. Very reasonable price for part and service. Will definitely use B&K in the future. Highly recommended."

Brian B on March 2020


Avatar for Air Blue Heating & Cooling Inc

Air Blue Heating & Cooling Inc

4.67(
619
)

Air Blue Heating & Cooling Inc

4.67(
619
)
Customers say: Super punctual
1983 years of experience

**$25 off any repair $100 or more (exclusions apply) ASK US FOR DETAILS** Air Blue Heating & Cooling Inc. is full service heating and cooling company staffed by experienced, trained, and courteous professionals. We serve you with over 30 years of HVAC field experience. We pride ourselves on excellent customer service, and will make sure that your every HVAC need and request is satisfied 100% of the time. Air Blue Heating & Cooling, Inc. is fully licensed, bonded, insured, and our technicians are factory trained. We are a member of the North American Technician Excellence (NATE) which is the leading certificate program for technicians in the heating, ventilation, air-conditioning, and refrigeration (HVAC/R) industry and is the only test supported by the entire industry. We offer safety efficiency maintenance agreements as a pillar to the reliability of your heating and cooling needs. To maintain your system for year-round comfort and reliability. we recommend you get your spring and fall tune-up and service every year.

"Although the technician was not able to fix my wall heater, he was prompt courteous and explained the issue and why it could not be repaired."

John P on January 2024

**$25 off any repair $100 or more (exclusions apply) ASK US FOR DETAILS** Air Blue Heating & Cooling Inc. is full service heating and cooling company staffed by experienced, trained, and courteous professionals. We serve you with over 30 years of HVAC field experience. We pride ourselves on excellent customer service, and will make sure that your every HVAC need and request is satisfied 100% of the time. Air Blue Heating & Cooling, Inc. is fully licensed, bonded, insured, and our technicians are factory trained. We are a member of the North American Technician Excellence (NATE) which is the leading certificate program for technicians in the heating, ventilation, air-conditioning, and refrigeration (HVAC/R) industry and is the only test supported by the entire industry. We offer safety efficiency maintenance agreements as a pillar to the reliability of your heating and cooling needs. To maintain your system for year-round comfort and reliability. we recommend you get your spring and fall tune-up and service every year.

"Although the technician was not able to fix my wall heater, he was prompt courteous and explained the issue and why it could not be repaired."

John P on January 2024


Avatar for Energy360 Solutions Inc

Energy360 Solutions Inc

4.98(
46
)

Energy360 Solutions Inc

4.98(
46
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

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.


Avatar for DRF Water Heating Solutions

DRF Water Heating Solutions

4.63(
326
)

DRF Water Heating Solutions

4.63(
326
)
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

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

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Energy Efficiency Auditing questions, answered by experts

STC (Sound Transmission Class) ratings tell you how well something blocks airborne noise. It’s a single number that sums up how much sound a material, like a window, can stop across regular speech frequencies. The higher the number, the better the sound reduction. A typical single-pane window hovers around STC 25 (where you can hear normal conversations), while well-sealed, double-pane options can push past STC 45 (which blocks out loud speech and most music). Just keep in mind that STC doesn’t cover everything—low rumbles like bass or thunder can sneak through—so pairing methods are always ideal for the most peace and quiet.

The answer is a resounding yes, as dishwashers save significant water and energy compared to washing dishes by hand. The difference is so drastic in fact that those who use energy-efficient dishwashers can expect savings of over $450 per year. This is because dishwashers use less water, they wash at a higher temperature than a hand rinse, and you don’t need to rinse them after washing. New dishwashers use around 4 gallons per load, whereas washing by hand can use up to 2 gallons per minute.

Window AC units use a fair amount of electricity during use, but the usage pales in comparison to central units. As a matter of fact, window units use around a third of the amount of energy as a central AC. On average, a window air conditioner costs between $15 and $40 per month to run, though this depends on a number of external factors.

String lights require electricity, but not an excessive amount, especially when compared to other lighting fixtures. LED rope lights, for instance, consume around one watt per foot. Running six or seven light strings simultaneously should only cost you around $10 to $15 each month. You can save even more money by remembering to turn off your lights during daylight hours. 

You can check your home's humidity in a few ways. A simple option is to use a hygrometer, which you can find at a hardware or big box store. Your smartphone may also have an app that can measure humidity. Modern thermostats, particularly smart thermostats, are also able to measure humidity levels.

The Saint Charles, IL homeowners’ guide to energy efficiency auditing services

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