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*The Angi rating for Energy Efficiency Auditing companies in Brussels, WI 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 Brussels, WI 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 September 28, 2026

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

Claire's Insulation Service
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Brussels, WI and surrounding areas

Approved

In business since 1981

Free estimates

Offers commercial services

With over 36 years of experience and knowledge in the insulation industry, we are the experts you need to take care of your home or business. We handle everything from polyurethane spray foam to insulation testing with thermal imaging. We will treat your home as we would treat our own. Give Claire's Insulation Service a call today, we look forward to working with you!

Response time20 mins
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Second Opinion Home Inspections
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Brussels, WI and surrounding areas

In business since 2001

Free estimates

Credit card accepted

We offer a variety of Home Improvement services that are customizable to each individual project. We specialize in handyman/carpentry work and a variety of related service and repair projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

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Energy Efficiency Auditing FAQs, answered by experts

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.

Yes, with features like LED lighting and variable speed controls for efficiency.

DIY is possible with basic tools. Professional audits provide comprehensive assessments and tailored recommendations.

Yes, advising on models that save electricity and reduce utility bills.

A home energy audit costs about $420 on average, with prices ranging from $100 to $2,250 or more. The final cost depends on factors like your home's size, location, the thoroughness of the audit, and the specific tests performed. A basic Level 1 walk-through inspection typically costs between $150 and $200, while a comprehensive Level 3 audit with detailed testing and a report costs around $900. Homeowners may be able to use the 2022 Inflation Reduction Act’s Energy Efficient Home Improvement credit to cover up to $150 of the audit cost.

Costs for common individual tests include:

  • Blower door test: $350

  • Duct testing: $100

  • HERS test: $375

  • HERS certification: $200

  • Infrared imaging: $200

The Brussels, WI homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.

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