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TRUSTED BY TROY, IL HOMEOWNERS

  • Average homeowner rating star icon3.9
    Average homeowner rating
  • Verified reviews icon10
    Verified energy efficiency auditing services reviews

Verified Reviews for Energy Efficiency Auditing pros in Troy, IL

*The Angi rating for Energy Efficiency Auditing companies in Troy, 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 Troy, 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 July 30, 2026

Top-Rated Energy efficiency auditors in Troy - Updated Nov 2026

Peterson Energy Consultants
3.9(
67
)
Energy Audit - For BusinessHome Energy Audit

Serving Troy, IL and surrounding areas

In business since 1978

"Everything about Paul and Mindy Peterson and their son Anthony is professional and well done. Mindy came out and gave a thorough report with pictures, never a hard sell. I went with the medium option (not the most expensive with all the bells and whistles and did not go with the basic). She was informative and honest. A family owned local business who works really hard at the integrity of the business. Anthony arrived and so impressed with how they were concerned with the respect of my home. They draped the floors with painters cloth and super duper careful on walls, doors, etc. The job was completed in timely manner and if I had any issues - which I don't , they are the kind of people who want to make it right and would come back in a heartbeat. They are great people and in today's world, it is really hard to find ethical suppliers who also care about the customer. Job well done and HIGHLY recommend. Look no further, they are the real deal."
Recommended by80%of homeowners
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Avatar for Spengler Plumbing, Heating and Cooling
Spengler Plumbing, Heating and Cooling
3.8(
75
)
Energy Audit - For BusinessHome Energy Audit

Serving Troy, IL and surrounding areas

In business since 1971

Emergency services offered

Credit card accepted

"Corey Modglin was very professional and the service was handled in a timely manner (same day). He did not tell me I needed anything extra done, just to make a sale.
"
Recommended by68%of homeowners
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northshore pressure washing
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Troy, IL and surrounding areas

In business since 2011

Free estimates

We are one of the largest energy consulting companies in the country. We offer Free Energy Forcasts to businesses across a wide variety of climate zones. When implemented, our recommendations can consistently save you 17-22% on your energy costs, in the first year. We offer a variety of products, from an all-inclusive fixed product, to a variable option and a hybrid. Call today to see what solutions we can offer you! References are available from very happy clients.

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Eddie Givens Contracting Services LLC
3.8(
4
)
Energy Audit - For BusinessHome Energy Audit

Serving Troy, IL and surrounding areas

In business since 1990

Emergency services offered

Credit card accepted

"Excellent.  Eddie Givens, the owner of the company, personally fixed our AC unit.  All of his HVAC technicians were working today.  Eddie offers a wealth of services.  We plan to next use him for an electrical project and replacing our current HVAC contractor with twice annual check ups.  We strongly recommend Eddie Givens"
Recommended by75%of homeowners
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Energy Efficiency Auditing FAQs, 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.

Home power is measured in kilowatt-hours, commonly expressed as kWh. The average home uses between 800 and 1,000 kWh per month. Peak usage (and highest bills) occurs in the middle of summer and the depths of winter. Keeping on top of your usage during these crucial months will lower your annual average usage considerably. 

While many states require all new construction to undergo blower door tests, it’s not a requirement for existing homes. But in both cases, a blower test helps confirm that the contractor has sealed the exterior, that the type of ductwork installed is functioning properly, and that your home is as efficient as possible.

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

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

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