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American Building Science

4.85(
30
)
Approved Pro

American Building Science

4.85(
30
)
Approved Pro
Super Service Award
Customers say: Quality work
19 years of experience
Free onsite estimate

With 16+ years experience in the home inspection and home performance industry, we are the experts you need to take care of any of your residential inspection and energy auditing needs. We promise to treat your home as we would treat our own. We also offer commercial building inspection services. Call today to schedule an appointment with us. We look forward to working with you!

"I needed an inspection done on our new home. This is an older house so I had some concerns. Bill was incredibly thorough and professional. His report was detailed and left no questions about any of the info provided. He allowed me to arrive at the house after the inspection and review some things he found. I was extremely impressed with his knowledge, candor, and professionalism. He was quick to respond and went out of his way to recommend other inspectors he knew who would be able to help us across the state line to sell our house. 10/10 would recommend. "

Hunter C on October 2025

With 16+ years experience in the home inspection and home performance industry, we are the experts you need to take care of any of your residential inspection and energy auditing needs. We promise to treat your home as we would treat our own. We also offer commercial building inspection services. Call today to schedule an appointment with us. We look forward to working with you!

"I needed an inspection done on our new home. This is an older house so I had some concerns. Bill was incredibly thorough and professional. His report was detailed and left no questions about any of the info provided. He allowed me to arrive at the house after the inspection and review some things he found. I was extremely impressed with his knowledge, candor, and professionalism. He was quick to respond and went out of his way to recommend other inspectors he knew who would be able to help us across the state line to sell our house. 10/10 would recommend. "

Hunter C on October 2025


Avatar for Sangamon Solar

Sangamon Solar

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Sangamon Solar

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7 years of experience

Sangamon Solar, LLC has been selling and installing solar since 2018. We have recently completed a group buy project for Champaign-Urbana Illinois. Everything we do is all in house, from solar design, site surveys, interconnection, permitting, construction, electrical connection to the grid, and submitting paperwork to the state of Illinois to gain incentives back to offset your initial cost of going solar. We pride ourselves on our ability to successfully provide great customer service from the beginning to the end of the solar installation process.

Sangamon Solar, LLC has been selling and installing solar since 2018. We have recently completed a group buy project for Champaign-Urbana Illinois. Everything we do is all in house, from solar design, site surveys, interconnection, permitting, construction, electrical connection to the grid, and submitting paperwork to the state of Illinois to gain incentives back to offset your initial cost of going solar. We pride ourselves on our ability to successfully provide great customer service from the beginning to the end of the solar installation process.


Direct Solar of America

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Direct Solar of America

No reviews yet
14 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 USA Alarm Service, Inc

USA Alarm Service, Inc

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USA Alarm Service, Inc

No reviews yet
29 years of experience

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.


Avatar for Solar Wolf Energy

Solar Wolf Energy

2.00(
2
)

Solar Wolf Energy

2.00(
2
)
10 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!


Handy Dandy's Handimen

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Handy Dandy's Handimen

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11 years of experience

Handy Dandy's Handimen is a home services provider with 12 employees in the tri-state area. We have a get it done, get it done quickly, and get it done to where it stays done attitude. We do just about everything you could need inside of a home.

Handy Dandy's Handimen is a home services provider with 12 employees in the tri-state area. We have a get it done, get it done quickly, and get it done to where it stays done attitude. We do just about everything you could need inside of a home.


Barnett & Associates, Inc.

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Barnett & Associates, Inc.

No reviews yet
42 years of experience

We have been in the home inspection business for over 25 years and have two licensed home inspectors and wood destroying insect (WDI) inspectors, C. Dwight Barnett & Damon Barnett. Our home inspections are very thorough and we offer computerized and/or hard copy reports which include photos of problem areas photographed during the inspection. Damon Barnett also heads up the energy portion of our company and is NRPP (National Radon Proficiency Program) licensed, a certified Energy Rater, a member of the National Association of Home Builders, and a Green Verifier. Dwight Barnett has been a member of The American Society of Home Inspectors (ASHI) for 25 years and has been writing a weekly national Home Fix column for the Scripps Howard News Service for over 20 years. Barnett & Associates, Inc. is an accredited business with the Better Business Bureau.

We have been in the home inspection business for over 25 years and have two licensed home inspectors and wood destroying insect (WDI) inspectors, C. Dwight Barnett & Damon Barnett. Our home inspections are very thorough and we offer computerized and/or hard copy reports which include photos of problem areas photographed during the inspection. Damon Barnett also heads up the energy portion of our company and is NRPP (National Radon Proficiency Program) licensed, a certified Energy Rater, a member of the National Association of Home Builders, and a Green Verifier. Dwight Barnett has been a member of The American Society of Home Inspectors (ASHI) for 25 years and has been writing a weekly national Home Fix column for the Scripps Howard News Service for over 20 years. Barnett & Associates, Inc. is an accredited business with the Better Business Bureau.


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



Energy Efficiency Auditing questions, answered by experts

Yes, skylights can affect a home’s energy efficiency, either positively or negatively. Properly installed, energy-efficient skylights with Low-E coatings, double glazing, and UV-blocking glass can help regulate indoor temperatures and reduce heating and cooling costs. However, poorly insulated or older skylights can contribute to heat loss in winter and excess heat gain in summer, lowering overall energy efficiency.

The three levels of home energy audits include:

  • Level 1: Review of your energy bills and home for signs of energy inefficiency and areas for improvement. The average cost range is $0.08 to $0.12 per square foot.

  • Level 2: A level 2 ASHRAE energy audit costs $0.12 and $0.35 per square foot. In-depth analysis of your energy usage and provides a report of cost-saving changes.

  • Level 3: Comprehensive analysis and detailed recommendations for ways to improve your home’s energy efficiency. A level 3 audit costs about $0.36 to $0.50 per square foot.

Upgrade to double-glazed glass or apply energy-efficient coatings to reduce heat loss and utility costs.

There is no blanket figure for a residential home’s electrical load, since load varies by the size of the home, how many appliances are used, and the efficiency of their electrical systems. Typically, however, it’s safe to assume 40 to 60 amps is the average electrical load of a residential home. 

A blower door test shouldn’t take more than an hour, and most can be completed in less than 30 minutes. Expect the test to take longer once you start searching for leaks with thermal imaging or want to include sealing such leaks in the time estimate. The test doesn’t take much time and can’t be rushed, but it will take longer in large homes or those with many air leaks.

The Mount Carmel, 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.