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    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Wilmington

Avatar for Perma-Seal Basement Systems

Perma-Seal Basement Systems

4.55(
1,156
)
Approved Pro

Perma-Seal Basement Systems

4.55(
1,156
)
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.

"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


Avatar for Assured Energy Solutions

Assured Energy Solutions

4.83(
68
)
Approved Pro

Assured Energy Solutions

4.83(
68
)
Approved Pro
Customers say: Quick response
1985 years of experience
Free onsite estimate

Assured, based in Frankfort, IL, has over 30 years of experience delivering insulation, HVAC, air sealing, weatherization, and energy efficiency services across Chicago, the suburbs, and communities throughout Illinois and Indiana. We help homeowners, property managers, and utility programs reduce energy costs, improve comfort, and increase home performance. Known for quality workmanship and reliable results, our team works on both single-family and multifamily homes. We also assist customers with utility rebates and incentives. Whether it's attic insulation, duct sealing, or crawlspace upgrades, we take a detail-focused approach to every job.

"My loft above my garage was humid and a bit uncomfortable from what I was expecting. I’ve watched enough home repair shows and understand air flow enough to know it would never be perfect, but something was off because of the humidity issues. Mike came in and did an inspection, confirming that there was a lot of room for improvement in the garage ceiling. The heat camera was showing that there was a lot of heat transfer happening in the loft, foot prints (from boots) leaving heat transfer marks which is unusual and recommended dense insulation pack to fill the void. I sat on it for a few weeks, called and scheduled for the 17th, but got in early due to an opening. It took several hours to complete the work, and the folks said it had 5” bat insulation but a 17” void, which confirmed Mike’s original thought that there was a gap between the insulation and the loft floor which was carrying the heat from the outside into the floor."

Grant P on September 2025

Assured, based in Frankfort, IL, has over 30 years of experience delivering insulation, HVAC, air sealing, weatherization, and energy efficiency services across Chicago, the suburbs, and communities throughout Illinois and Indiana. We help homeowners, property managers, and utility programs reduce energy costs, improve comfort, and increase home performance. Known for quality workmanship and reliable results, our team works on both single-family and multifamily homes. We also assist customers with utility rebates and incentives. Whether it's attic insulation, duct sealing, or crawlspace upgrades, we take a detail-focused approach to every job.

"My loft above my garage was humid and a bit uncomfortable from what I was expecting. I’ve watched enough home repair shows and understand air flow enough to know it would never be perfect, but something was off because of the humidity issues. Mike came in and did an inspection, confirming that there was a lot of room for improvement in the garage ceiling. The heat camera was showing that there was a lot of heat transfer happening in the loft, foot prints (from boots) leaving heat transfer marks which is unusual and recommended dense insulation pack to fill the void. I sat on it for a few weeks, called and scheduled for the 17th, but got in early due to an opening. It took several hours to complete the work, and the folks said it had 5” bat insulation but a 17” void, which confirmed Mike’s original thought that there was a gap between the insulation and the loft floor which was carrying the heat from the outside into the floor."

Grant P on September 2025


"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


RCM Heating & Cooling

4.88(
58
)

RCM Heating & Cooling

4.88(
58
)
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

Since 2005, RCM Heating & Cooling has been providing New Lennox and Mokena with excellent workmanship, outstanding customer service, and quality products. As a full-service company, their highly trained and experienced technicians can assist you with anything from installations to maintenance to repairs. In fact, the technicians are proud experts when it comes to troubleshooting and diagnosing issues. When you need a heating or cooling problem solved, they are the ones to turn to. They are also indoor air specialists and can help you determine which product would best improve your home’s overall comfort. For same-day service, give them a call today.

"Heating season started and my forced air furnace failed. Of course all the HVAC repair companies were backlogged. RCM was available, came within hours, and the problem quickly diagnosed by the repairman (Jeff). The problem? My total bill was $675.00 for two 1 hour visits to replace an inducer motor. The OEM replacement part is $125 on-line. So, $550.00 for two hours of labor? I asked about the apparent high cost and was told was the cost of the part was responsible. When I pointed out the part was available on-line at $125, I was told that RCM has to pay more for a replacement inducer motor than I would. Having worked in the trades in my youth, I've never heard of a contractor paying more than the public. I don't know whether RCM's prices are fair, average or I got shafted, but I do know when I'm being fed a line. My advice is to get your furnace checked well before the season starts."

Jeff C on December 2019

Since 2005, RCM Heating & Cooling has been providing New Lennox and Mokena with excellent workmanship, outstanding customer service, and quality products. As a full-service company, their highly trained and experienced technicians can assist you with anything from installations to maintenance to repairs. In fact, the technicians are proud experts when it comes to troubleshooting and diagnosing issues. When you need a heating or cooling problem solved, they are the ones to turn to. They are also indoor air specialists and can help you determine which product would best improve your home’s overall comfort. For same-day service, give them a call today.

"Heating season started and my forced air furnace failed. Of course all the HVAC repair companies were backlogged. RCM was available, came within hours, and the problem quickly diagnosed by the repairman (Jeff). The problem? My total bill was $675.00 for two 1 hour visits to replace an inducer motor. The OEM replacement part is $125 on-line. So, $550.00 for two hours of labor? I asked about the apparent high cost and was told was the cost of the part was responsible. When I pointed out the part was available on-line at $125, I was told that RCM has to pay more for a replacement inducer motor than I would. Having worked in the trades in my youth, I've never heard of a contractor paying more than the public. I don't know whether RCM's prices are fair, average or I got shafted, but I do know when I'm being fed a line. My advice is to get your furnace checked well before the season starts."

Jeff C on December 2019


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


"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


DNR CONSTRUCTION INC

4.79(
38
)

DNR CONSTRUCTION INC

4.79(
38
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

We are family owned and have been in business for over 14 years. We do not sub-contract any work.

"Initial call and owner, he didn't try to sell me anything else he made an immediate arrangement to come out the next day. Gave a price that was fairer than competitors. Vedel, Leo, George, Alfonso, and Cesar they were professional, courteous, competent ,left my property clean and tidy. They were knowledgeable and expedient . I highly recommend them."

Gisella M on November 2021

We are family owned and have been in business for over 14 years. We do not sub-contract any work.

"Initial call and owner, he didn't try to sell me anything else he made an immediate arrangement to come out the next day. Gave a price that was fairer than competitors. Vedel, Leo, George, Alfonso, and Cesar they were professional, courteous, competent ,left my property clean and tidy. They were knowledgeable and expedient . I highly recommend them."

Gisella M on November 2021


Avatar for SAFE Electrical Service

SAFE Electrical Service

4.89(
108
)

SAFE Electrical Service

4.89(
108
)
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

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

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Energy Efficiency Auditing questions, answered by experts

Typically, triple-pane windows made with krypton gas filling are the most energy efficient. A window’s frame, glass, design, and installation all affect its energy efficiency. These windows, in particular, are designed highly effectively in terms of their ability to insulate.

Installing weather stripping or upgrading to insulated panels can improve efficiency.

Yes, energy-efficient options such as LEDs and solar-powered lights are available. These alternatives consume less electricity, resulting in lower utility costs. They are also more environmentally friendly due to their reduced carbon footprint and longer lifespan.

Keep the unit full but not overloaded, ensure door seals are tight, set correct temperatures, and avoid frequent door openings. Position the appliance away from heat sources for optimal performance.

While parts of the appraisal are out of your control, there are some things you can do to potentially raise the home’s value. You can make necessary repairs and upgrades before the appraiser visits—an appraiser can only value what is currently part of the home, not its potential. You can also provide the appraiser with the cost of recent upgrades. The appraiser will likely increase the value of your home by about 50% or more of what you paid for those improvements.

The Wilmington, 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.