Top-rated energy efficiency auditors.

Get matched with top energy efficiency auditors in Portage, WI

Enter your zip and get matched with up to 5 pros

Need a pro for your energy efficiency auditing project in Portage, WI?

Select your specific project to find the pro for you.

Verified Reviews for Energy Efficiency Auditing pros in Portage, WI

*The Angi rating for Energy Efficiency Auditing companies in Portage, 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 Portage, 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 December 03, 2025

Find Energy efficiency auditors in Portage

Hill's Wiring Inc

5.00(
4
)

Hill's Wiring Inc

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Hill’s Wiring has been in the electrical contracting business for Over 100 years. Since 1916 we have been known for high-quality electrical work and conscientious project management.

Hill’s Wiring has been in the electrical contracting business for Over 100 years. Since 1916 we have been known for high-quality electrical work and conscientious project management.

Avatar for Energy House LLC

Energy House LLC

4.11(
19
)

Energy House LLC

4.11(
19
)
Customers say: Super punctual
2004 years of experience

Focus on Energy Home Performance Trade Ally is honest and has a reliable team that provides high quality, timely service. We treat your family with respect and have been in the Weatherization field since 1984. Our staff have completed over 1,000 independent energy audits and have offices in Milwaukee and Madison. For your added convenience we offer early and late appointments.

"Very thorough & fixed areas of concern to our satisfaction. We no longer have ice dams which was our main reason for hiring them."

Andrea K on January 2018

Focus on Energy Home Performance Trade Ally is honest and has a reliable team that provides high quality, timely service. We treat your family with respect and have been in the Weatherization field since 1984. Our staff have completed over 1,000 independent energy audits and have offices in Milwaukee and Madison. For your added convenience we offer early and late appointments.

"Very thorough & fixed areas of concern to our satisfaction. We no longer have ice dams which was our main reason for hiring them."

Andrea K on January 2018

Five Lakes Home Energy Audits

5.00(
5
)

Five Lakes Home Energy Audits

5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

More to come

"Not only was Teresa professional and knowledgeable, informing me of the details of the tests and recommendations for what fixes can easily be done myself or with simple fixes. But gave detailed notes of affordable and recommended options for more involved fixes. Additionally, Teresa accommodated my disability well, and discovered two minor gas leaks, aiding me in calling the utility and getting immediate repairs. I'd highly recommend 5 lakes to anyone looking to improve their home energy use, or prevent airflow problems."

Joe F on March 2021

More to come

"Not only was Teresa professional and knowledgeable, informing me of the details of the tests and recommendations for what fixes can easily be done myself or with simple fixes. But gave detailed notes of affordable and recommended options for more involved fixes. Additionally, Teresa accommodated my disability well, and discovered two minor gas leaks, aiding me in calling the utility and getting immediate repairs. I'd highly recommend 5 lakes to anyone looking to improve their home energy use, or prevent airflow problems."

Joe F on March 2021

Duerst Insulation Technicians

4.29(
17
)

Duerst Insulation Technicians

4.29(
17
)
Customers say: Super punctual
2001 years of experience

We are a full service high performance insulation company. We also perform home performance audits that include infiltration testing and infrared imaging.

"Lee's team of insulation specialists did a phenomenal job of spray foam insulating a very, very small crawl space in our home (as well as some boxsills). We have had several construction professionals in our home recently, as we are considering a major renovation to our house, and they have all commented on how well done the job is, and how amazed they are that insulation specialists were able to access such a small space. The team arrived on time, did their work quickly, and the administrative team was very communicative, personable, and kind. We'd highly recommend Duerst to others!"

Carrie S on January 2019

We are a full service high performance insulation company. We also perform home performance audits that include infiltration testing and infrared imaging.

"Lee's team of insulation specialists did a phenomenal job of spray foam insulating a very, very small crawl space in our home (as well as some boxsills). We have had several construction professionals in our home recently, as we are considering a major renovation to our house, and they have all commented on how well done the job is, and how amazed they are that insulation specialists were able to access such a small space. The team arrived on time, did their work quickly, and the administrative team was very communicative, personable, and kind. We'd highly recommend Duerst to others!"

Carrie S on January 2019

Chads Design Build

4.42(
24
)

Chads Design Build

4.42(
24
)
Customers say: Quality work
1992 years of experience

Chads Design Build (formerly Chad's Carpentry) is a full-service residential remodeling company, specializing in sustainable design and historic renovations. Established in 1992, Chads is committed to providing knowledgeable, well-trained professionals, who create durable, energy-efficient, and beautiful renovations, including additions, kitchens, bathrooms, basements, windows and doors. We partner with Home Performance with Energy Star to assure quality and to lower your energy bills. Building a better world! LIC#:680471

Chads Design Build (formerly Chad's Carpentry) is a full-service residential remodeling company, specializing in sustainable design and historic renovations. Established in 1992, Chads is committed to providing knowledgeable, well-trained professionals, who create durable, energy-efficient, and beautiful renovations, including additions, kitchens, bathrooms, basements, windows and doors. We partner with Home Performance with Energy Star to assure quality and to lower your energy bills. Building a better world! LIC#:680471

TDS CUSTOM CONSTRUCTION

5.00(
3
)

TDS CUSTOM CONSTRUCTION

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

TDS Custom Construction specializes in custom remodeling and design in the greater Madison area. We are recognized for our strong emphasis on energy efficient and sustainable designs, and a commonsense approach to home performance and green building techniques. TDS is a full-service design-build contractor that employees 15 community members and has been in business since 1985.

"TDS provided excellent quality and service from start to finish. They removed the old brick chimney that was between the kitchen and dining room, and they did such an excellent job containing the demo debris that I didn’t even have to dust after! They also protected our existing flooring very well. You also can’t even see the patching on the ceiling. And at the end of the job, the PM let us know of a couple other issues he spotted in the attic (replacing vents) but didn’t pressure us in any way to sign them on for another project. I highly recommend them!"

Emily L on January 2020

TDS Custom Construction specializes in custom remodeling and design in the greater Madison area. We are recognized for our strong emphasis on energy efficient and sustainable designs, and a commonsense approach to home performance and green building techniques. TDS is a full-service design-build contractor that employees 15 community members and has been in business since 1985.

"TDS provided excellent quality and service from start to finish. They removed the old brick chimney that was between the kitchen and dining room, and they did such an excellent job containing the demo debris that I didn’t even have to dust after! They also protected our existing flooring very well. You also can’t even see the patching on the ceiling. And at the end of the job, the PM let us know of a couple other issues he spotted in the attic (replacing vents) but didn’t pressure us in any way to sign them on for another project. I highly recommend them!"

Emily L on January 2020

Avatar for USA Insulation of Madison

USA Insulation of Madison

5.00(
2
)

USA Insulation of Madison

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

USA Insulation of Madison is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 26 years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Everything and everyone was great! I was very surprised and pleased at how quickly everything was able to be scheduled and the timely manner in which it was done. A special great big 'Thank You' to Emily Behr! She was amazing! Thanks so much to all involved! :-D"

Pamela C on December 2022

USA Insulation of Madison is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 26 years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Everything and everyone was great! I was very surprised and pleased at how quickly everything was able to be scheduled and the timely manner in which it was done. A special great big 'Thank You' to Emily Behr! She was amazing! Thanks so much to all involved! :-D"

Pamela C on December 2022

Showing 1-10 of 25
Energy Efficiency Auditing questions, answered by experts

You'll likely need more than great home staging to sell your home. Now is a great time to get to work on the curb appeal of your home . Hire local exterior painters and landscapers to coat the exterior of your home and bring it new life with some sprucing up.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

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.

Costs depend on the property size, audit complexity, and whether additional testing (e.g., blower door) is included.

Not all homes are suited for solar panel systems. Older roofs or those in poor condition may need repairs or replacement before solar panels can be installed. Some other factors to consider are the amount of sunlight your roof receives, the roof’s orientation and pitch, and any shading from nearby trees or buildings.

The Portage, 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.

See all articles