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Verified Reviews for Energy Efficiency Auditing pros in Herrin, IL

*The Angi rating for Energy Efficiency Auditing companies in Herrin, 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 Herrin, 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 January 22, 2026

Find Energy efficiency auditors in Herrin

Avatar for StraightUp Solar

StraightUp Solar

4.57(
14
)

StraightUp Solar

4.57(
14
)
Customers say: Quality work
20 years of experience

StraightUp Solar is a BBB A+, locally owned Certified B Corp founded in 2006. StraightUp Solar has completed more than 1,700 solar energy installations totaling over 22 MW, and continues to serve the region from offices located in Bloomington, Illinois and St. Louis, Missouri. StraightUp Solar is a member-owner in both the Amicus Solar Cooperative and the Amicus O&M Cooperative, and is proud to be an active voice in the Illinois Solar Energy Association. Solar Design & Installation, Energy Storage/Solar Battery, Solar Service & Maintenance, Electric Vehicle Charging Stations, Solar Remove & Replace

StraightUp Solar is a BBB A+, locally owned Certified B Corp founded in 2006. StraightUp Solar has completed more than 1,700 solar energy installations totaling over 22 MW, and continues to serve the region from offices located in Bloomington, Illinois and St. Louis, Missouri. StraightUp Solar is a member-owner in both the Amicus Solar Cooperative and the Amicus O&M Cooperative, and is proud to be an active voice in the Illinois Solar Energy Association. Solar Design & Installation, Energy Storage/Solar Battery, Solar Service & Maintenance, Electric Vehicle Charging Stations, Solar Remove & Replace

Avatar for Energy Savers SI, LLC

Energy Savers SI, LLC

4.86(
7
)

Energy Savers SI, LLC

4.86(
7
)
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Energy Savers SI is a small family owned business in Carterville, IL and has been involved in the industry for over 25 years. Specializing in air sealing, attic insulation, wall insulation, crawlspace encapsulation, bowing basement wall repair, basement waterproofing, energy audits, moisture remediation, sealed vapor barriers, siding, windows, doors, foundation repair, whole house ventilation and air quality control. Our certified energy efficiency professionals offer energy efficient upgrades for homes and businesses which can benefit you financially for years to come. These upgrades allow friends and family to experience a safer, more comfortable and economical dwelling.

"I give this company an A for doing the job for a good price. I give them an overall grade of B because if you need them to come out and make repairs on the work they just finished, you have to text message them every day to get them to come out. I have one piece of siding that needs to be put back up, and have been waiting more than six weeks because I forget to text them every day. I really want to give them an A, but I just can't. Have been waiting too long for them to re-hang that one piece of siding."

Jeff S on August 2020

Energy Savers SI is a small family owned business in Carterville, IL and has been involved in the industry for over 25 years. Specializing in air sealing, attic insulation, wall insulation, crawlspace encapsulation, bowing basement wall repair, basement waterproofing, energy audits, moisture remediation, sealed vapor barriers, siding, windows, doors, foundation repair, whole house ventilation and air quality control. Our certified energy efficiency professionals offer energy efficient upgrades for homes and businesses which can benefit you financially for years to come. These upgrades allow friends and family to experience a safer, more comfortable and economical dwelling.

"I give this company an A for doing the job for a good price. I give them an overall grade of B because if you need them to come out and make repairs on the work they just finished, you have to text message them every day to get them to come out. I have one piece of siding that needs to be put back up, and have been waiting more than six weeks because I forget to text them every day. I really want to give them an A, but I just can't. Have been waiting too long for them to re-hang that one piece of siding."

Jeff S on August 2020

Avatar for Solar Wolf Energy

Solar Wolf Energy

2.00(
2
)

Solar Wolf Energy

2.00(
2
)
11 years of experience

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Effingham Wind and Solar Power

No reviews yet

Effingham Wind and Solar Power

No reviews yet
16 years of experience

About Effingham Wind and Solar Power Provide low cost high grade solar, heating, cooling, and wind power. We are not talking just solar. We are talking full energy solutions. Affordable Renewable Solutions. One of the biggest challenges is heating and cooling. We have a way to heat and cool your home or business that runs on Solar, Wind, and/or Hydro Power. Propane, Natural Gas, and/or A/C Electricity isn't burned. You can start generating your electricity in a very short period of time. Usually within 3-5 days of property inspection. We can solar, wind, or hydro power anything. Grid Tie, Off Grid, Battery Backup, and All Three.

About Effingham Wind and Solar Power Provide low cost high grade solar, heating, cooling, and wind power. We are not talking just solar. We are talking full energy solutions. Affordable Renewable Solutions. One of the biggest challenges is heating and cooling. We have a way to heat and cool your home or business that runs on Solar, Wind, and/or Hydro Power. Propane, Natural Gas, and/or A/C Electricity isn't burned. You can start generating your electricity in a very short period of time. Usually within 3-5 days of property inspection. We can solar, wind, or hydro power anything. Grid Tie, Off Grid, Battery Backup, and All Three.

5000 Lights Inc

No reviews yet

5000 Lights Inc

No reviews yet
Free onsite estimate

5000 Lights, Inc. sister company 5K Smart Systems, LLC. is an Energy Savings Company and Full Service Trade Ally in ComEd's SBES and Smart Ideas for Your Business® programs offering free energy assessments and instant lighting discounts. 5000 Lights Inc. is a wholesale distributor of USA made LED retrofit kits, lamps and fixtures for commercial, industrial and residential applications.

5000 Lights, Inc. sister company 5K Smart Systems, LLC. is an Energy Savings Company and Full Service Trade Ally in ComEd's SBES and Smart Ideas for Your Business® programs offering free energy assessments and instant lighting discounts. 5000 Lights Inc. is a wholesale distributor of USA made LED retrofit kits, lamps and fixtures for commercial, industrial and residential applications.

Direct Solar of America

No reviews yet

Direct Solar of America

No reviews yet
15 years of experience

Our second-to-none brokerage model benefits our customers by making sure they see increased benefits and complete satisfaction, while we make sure they realize the most optimal cost savings. With various financing options, multiple choices for Solar Power technology, and installation our customers value our extensive experience in creating customized solutions that meet their needs. After years of experience and more than 3,500 homes powered with the help of our solar brokerage services, we think the choice is clear! Direct Solar America is a subsidiary of Single Point, Inc. (OTC: SING).

Our second-to-none brokerage model benefits our customers by making sure they see increased benefits and complete satisfaction, while we make sure they realize the most optimal cost savings. With various financing options, multiple choices for Solar Power technology, and installation our customers value our extensive experience in creating customized solutions that meet their needs. After years of experience and more than 3,500 homes powered with the help of our solar brokerage services, we think the choice is clear! Direct Solar America is a subsidiary of Single Point, Inc. (OTC: SING).

Avatar for Energy Choice Center

Energy Choice Center

No reviews yet

Energy Choice Center

No reviews yet
17 years of experience

We provide free energy consulting services that pertain to discounted natural gas and electricity supply services through local utility companies.

We provide free energy consulting services that pertain to discounted natural gas and electricity supply services through local utility companies.

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Energy Efficiency Auditing questions, answered by experts

Insulation is measured by R-value, which is the measure of a material's ability to resist heat transfer. The higher the number, the better the insulation. When installing insulation yourself, you need to determine the optimal R-value you need to keep your home warm in the wintertime, cool in the heat of summer, and energy-efficient all year long. Each inch of insulation provides between a 3 and an 8 R-value. The climate where you live plays a major role in what R-value you need and the price tag you might see in your insulation installation.

Blower door tests are measured in a few different ways, but the most popular are air changes per hour (ACH) and cubic feet of air (CFM) moving through the house per hour. A good ACH score is less than 2ACH, but 1ACH is better. This means the house experiences a total air change within 60 minutes (for 1ACH). For 2ACH, there’s a complete change every 30 minutes, and so on. CFM scores are similar in that a lower score means less air change, and therefore less leakage.

A home energy audit costs about $420 on average, ranging from about $100 to $2,250 or more. Cost factors include the size of your home, the type of testing, and the thoroughness of the audit. A Level 1 walk-through inspection will cost between $150 and $200 for the auditor to point out inefficiencies in your home. On the other hand, a more thorough Level 3 audit with testing and a detailed report will cost about $900.

It’s not recommended to turn off your breaker box in hopes of saving electricity. Breaker boxes were not designed to constantly be switched on and off. Therefore, turning off breakers unnecessarily can cause costly damage that outnumbers any energy savings. Only flip your breakers if absolutely necessary when troubleshooting an electrical issue.

Gas fireplaces use either natural gas or propane—both of which will increase your energy expenses. On average, running a gas fireplace costs $400 to $640 per year; however, these costs can vary significantly depending on the fuel price in your area and the frequency of fireplace use. If you’re looking for a more energy-efficient option, consider switching to an electric fireplace.

The Herrin, IL homeowners’ guide to energy efficiency auditing services

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