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Avatar for PureTech Home Services LLC

PureTech Home Services LLC

5.00(
7
)
Approved Pro

PureTech Home Services LLC

5.00(
7
)
Approved Pro
1 years of experience
Free onsite estimate

All team members are certified with the national body NRPP for radon testing and mitigation. Our team delivers personalized, professional service with a focus on health, safety, and customer satisfaction. Healthy homes start with PureTech Home Services—your trusted local expert for safer indoor environments. If you're curious what the average radon gas levels are in your local area, we've built a tool with the latest radon testing data plus health implications for the entire state of Wisconsin here: Radon Levels by Zip Code Search

"They were very timely and even stopped the day before their personal trip to give me the estimate and setup a time to start the work couldn't have asked for a better Pro/experience"

Janet S on October 2025

All team members are certified with the national body NRPP for radon testing and mitigation. Our team delivers personalized, professional service with a focus on health, safety, and customer satisfaction. Healthy homes start with PureTech Home Services—your trusted local expert for safer indoor environments. If you're curious what the average radon gas levels are in your local area, we've built a tool with the latest radon testing data plus health implications for the entire state of Wisconsin here: Radon Levels by Zip Code Search

"They were very timely and even stopped the day before their personal trip to give me the estimate and setup a time to start the work couldn't have asked for a better Pro/experience"

Janet S on October 2025


Avatar for Advanced Home Inspections LLC

Advanced Home Inspections LLC

5.00(
59
)

Advanced Home Inspections LLC

5.00(
59
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Advanced Home Inspections is the leading source for commercial and residential property inspections. We are certified master property inspectors in Onalaska, WI. When you are buying or selling real estate, call us for the comprehensive inspection that lets you make a more informed decision regarding the transaction. The hallmarks of our inspections are consistency, state-of-the-art equipment and techniques, and timely, courteous service. Purchasing real estate is a major investment, and our inspections give you the peace of mind that comes from knowing a property’s true condition. Schedule your inspection today, and let us put our years of experience to work for you. We empower our customers to make the best real estate decision for their future and families through detailed reporting and clear communication. We want our clients to feel safe, to be knowledgeable, responsible homeowners, to feel educated and at ease about their future home or investment.

"We have worked with James twice. He's friendly, professional, and knowledgeable about a variety of engineering concerns. His inspections have been systematic and thorough. On the inspection he did several years ago for us, he identified several items of concern and mechanical systems that were nearing the end of their service life; pretty much everything he predicted would fail soon has, and everything he identified as being totally fine has been in fact totally fine. What more could you ask for?"

Jeffrey N on August 2023

Advanced Home Inspections is the leading source for commercial and residential property inspections. We are certified master property inspectors in Onalaska, WI. When you are buying or selling real estate, call us for the comprehensive inspection that lets you make a more informed decision regarding the transaction. The hallmarks of our inspections are consistency, state-of-the-art equipment and techniques, and timely, courteous service. Purchasing real estate is a major investment, and our inspections give you the peace of mind that comes from knowing a property’s true condition. Schedule your inspection today, and let us put our years of experience to work for you. We empower our customers to make the best real estate decision for their future and families through detailed reporting and clear communication. We want our clients to feel safe, to be knowledgeable, responsible homeowners, to feel educated and at ease about their future home or investment.

"We have worked with James twice. He's friendly, professional, and knowledgeable about a variety of engineering concerns. His inspections have been systematic and thorough. On the inspection he did several years ago for us, he identified several items of concern and mechanical systems that were nearing the end of their service life; pretty much everything he predicted would fail soon has, and everything he identified as being totally fine has been in fact totally fine. What more could you ask for?"

Jeffrey N on August 2023


Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018


The company with home inspections, and has expanded into radon mitigation.


Avatar for SWAT Environmental of Milwaukee

SWAT Environmental of Milwaukee

5.00(
4
)

SWAT Environmental of Milwaukee

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

SWAT Environmental has installed more than 50,000 radon systems throughout the country. Our licensed National Radon Board service technicians make up America’s largest radon abatement company. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

SWAT Environmental has installed more than 50,000 radon systems throughout the country. Our licensed National Radon Board service technicians make up America’s largest radon abatement company. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.


Radon Inc

4.67(
9
)

Radon Inc

4.67(
9
)
Customers say: Quick response
18 years of experience

Radon Inc is certified through EPA to provide Radon testing and Mitigation. The technician who arrives at your door will have completed all of the required training and testing and be certified to take care of your Radon problem. He will be able to answer your questions professionally and provide you with solutions based on years of experience. Additional phones - (608) 729-4992, (866) 808-9965.

Radon Inc is certified through EPA to provide Radon testing and Mitigation. The technician who arrives at your door will have completed all of the required training and testing and be certified to take care of your Radon problem. He will be able to answer your questions professionally and provide you with solutions based on years of experience. Additional phones - (608) 729-4992, (866) 808-9965.


Avatar for SWAT Environmental of Madison

SWAT Environmental of Madison

4.67(
3
)

SWAT Environmental of Madison

4.67(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

SWAT Environmental has installed more than 50,000 radon systems throughout the country. Our licensed and certified Radon Measurement Technicians through the National Radon Safety Board make up America’s largest radon abatement company. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

SWAT Environmental has installed more than 50,000 radon systems throughout the country. Our licensed and certified Radon Measurement Technicians through the National Radon Safety Board make up America’s largest radon abatement company. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.


HESS HOME INSPECTION

No reviews yet

HESS HOME INSPECTION

No reviews yet

Hess Home Inspection has been serving the tri-state area for over 5 years. We have a great reputation and offer everything you need in order to make an informed decision!

Hess Home Inspection has been serving the tri-state area for over 5 years. We have a great reputation and offer everything you need in order to make an informed decision!


River Valley Home Inspections, LLC

No reviews yet

River Valley Home Inspections, LLC

No reviews yet

Providing licensed and insured professional Home Inspections in Southwestern Wisconsin, Southeastern Minnesota, and Northeastern Iowa. I also offer Radon Gas testing. Free thermal imaging is provided with each paid home inspection. Being a certified commercial drone pilot, I am able to utilize 4k drone technology to inspect any roof or chimney that might be inaccessible or unsafe to inspect. Being a veteran owned business I am pleased to offer all active duty, veterans, law enforcement, and first responders a $25 discount on their home inspection. Thanks so much for your service!

Providing licensed and insured professional Home Inspections in Southwestern Wisconsin, Southeastern Minnesota, and Northeastern Iowa. I also offer Radon Gas testing. Free thermal imaging is provided with each paid home inspection. Being a certified commercial drone pilot, I am able to utilize 4k drone technology to inspect any roof or chimney that might be inaccessible or unsafe to inspect. Being a veteran owned business I am pleased to offer all active duty, veterans, law enforcement, and first responders a $25 discount on their home inspection. Thanks so much for your service!


Avatar for SWAT Radon Mitigation of Brookfield

SWAT Radon Mitigation of Brookfield

No reviews yet

SWAT Radon Mitigation of Brookfield

No reviews yet
38 years of experience

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

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Radon Detection and Reduction questions, answered by experts

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

What is radon? It’s a radioactive gas that naturally occurs in the ground, forming as uranium and thorium decay. It has no color or odor, so you don’t know if it’s seeping into your building’s foundation. Regular exposure to radon gas increases your chances of suffering from lung cancer. Radon testing measures the air inside your house for the presence of radon gas. If detected, the test will measure the severity of radon levels in your home’s air.

Mitigation reduces radon levels, protecting your health and complying with safety standards.

The Viola, WI homeowners’ guide to radon detection and reduction services

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