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

Avatar for R&J Solar LLC
R&J Solar LLC
5.0(
2
)
Energy Audit - For BusinessHome Energy Audit

Serving Marathon, WI and surrounding areas

In business since 2022

Free estimates

Credit card accepted

We provide residential and commercial solar power options, and provide support services for industry partner companies. We offer no cost consultations and $0 down financing. Please contact our office for a consultation at (931)922-8258.

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Recommended by100%of homeowners
Avatar for J2b Inspections, LLC
J2b Inspections, LLC
5.0(
3
)
Home Energy Audit

Serving Marathon, WI and surrounding areas

In business since 2022

Free estimates

Credit card accepted

Welcome to J2b Inspections LLC! We take pride the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! Proudly serving those who serve and have served we offer First Responder, Military, Senior and Veteran discounts.

Response time3 hrs
Recommended by100%of homeowners
Energy Efficiency Auditing FAQs, answered by experts

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

Leaving vents open but closing doors in unused rooms will probably not save money on your energy bill. Closed doors prevent the natural flow of air throughout the home, which could reduce the efficiency of the overall HVAC system. They could also restrict airflow into and through the return vents, making the HVAC system less efficient.

Yes, most audits include a report with prioritized recommendations for improving energy efficiency. Confirm with your auditor.

Homeowners may qualify for an HVAC tax credit if they install an ENERGY STAR®-certified HVAC system that exceeds the energy efficiency minimum standards:

  • Split-System AC: 16 SEER2

  • Packaged AC: 15.2 SEER2 and 11.5 EER2

  • Ducted Split Heat Pump: 15.2 SEER2, 7.8 HSPF2, and 11.7 EER2 

  • Packaged Heat Pump: 15.2 SEER2, 7.2 HSPF2, and 10.6 EER2

  • Mini-Split System: 16 SEER2, 9 HSPF2, and 12 EER2

You can claim up to 30% of the cost of the job, subject to maximums.

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

The Marathon, 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.