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Q: How long does radon mitigation take?

• <div><p>Installation typically takes 1-2 days, depending on the system and property layout.</p></div>

Q: How does radon enter my home?

• <div><p>Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.</p></div>

Q: What if radon is still high after mitigation?

• <div><p>You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.</p></div>

Q: How often should radon levels be tested to ensure safety?

• <div><p>Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.</p></div>

Q: How often should you replace a radon fan?

• <div><p>Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Ossian, IA

*The Angi rating for Radon Detection And Reduction companies in Ossian, IA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Ossian, IA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on May 20, 2026

Reviewed in May 2026
We hired Aaron for a number of projects from lawn care to various repairs on a recently purchased property. He was prompt to respond to our inquiry, very thorough in his evaluation of the issues and timely in the tasks so far. His prices were fair. We will continue to work with him for many...
Aaron Bilicki
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Reviewed in September 2024
The team repaired my central air cleaner, and now my home feels much fresher. They were knowledgeable, on time, and the pricing was fair. Iâ m glad I called them!
Build Up Remodeling and Construction
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Reviewed in February 2024
Well-spoken. Hard working. They tell you what they will do and when. And that's exactly what they do. They went over and beyond to make sure we had an attractive, long-lasting garage floor. They know concrete and they know what tools to use. I know our job had a big surprise. When they started...
RCG Construction LLC
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Reviewed in November 2023
Done timely, reasonably priced and clean
Farley Construction LLC
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Reviewed in July 2022
Cade was very personable and efficient. Would hire him again.
Modern Edge Construction
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Reviewed in July 2021
Marcus was always in contact with us making sure things are going along well. His team is very professional. Alfonzo was in charge on our job and followed through on everything. They just finished the job today and our house looks beautiful. Everyone was friendly and polite. Weâ re so glad...
Pro Painting & Restoration Corp.
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Reviewed in March 2021
The service was excellent. They were quick. They did the job very well with good quality and good price.
WCL Painting & Carpentry
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Reviewed in January 2021
He did really good work and was pleasant to have on the job.
Granger Construction, Inc.
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Reviewed in December 2020
So I needed some electric switches replaced on a Friday morning tyler came out Friday afternoon and was very knowledgeable pleasant great customer service skills and a very personal person. Because of this I will only use Ted's electric thanks so much tyler
Ted Electric, LLC
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Reviewed in October 2020
He does a really good job and cleans up when it is done.
Sunset Tree Service
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Find Radon detection and reduction specialists in Ossian

Milledge Construction

4.9(

)

Radon Gas - Abatement

Serving Ossian, IA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Installed in timely manner. Have to wait on radon test to see if it works."

Response time7 hrs

Response rate94%

89 neighbors recently requested a quote

Radon Gas - AbatementRadon Gas - Testing

Serving Ossian, IA and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"This job was completed efficiently and professionally. A design specialist came to test and measure every detail for the project. The crew arrived with everything needed for the job. They worked very hard to install Waterguard in the concrete floors inside around the foundation to the sump pump basket. They also installed Geo-lock anchors to support a block wall that was bowed. This company has 36 years in business and provides excellent results and professional customer relations. Call Amer. Wtrwrks for a free estimate. You will not be disappointed. A wise investment of $11,270."

Increased Efficiency of Crawlspace in Elk Mound

+156

Response time3 hrs

633 neighbors recently requested a quote

Recommended by92%of homeowners

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SWAT Environmental, Inc.

4.5(

)

Radon Gas - Abatement

Serving Ossian, IA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"They did a great job with the installation and made sure the Radon was under the level it needed to be. He had to make a couple of trips to make that happen but was very polite and profession through the whole process."

Response time1 day

Recommended by100%of homeowners

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Home Sweet Home Inspect Iowa Facebook

4.8(

)

Radon Gas - Testing

Serving Ossian, IA and surrounding areas

In business since 2020

Free estimates

Small jobs welcome

"Luis was very polite and professional! He explained the issues so I could understand. I would absolutely recommend him to others!"

+11

Response time3 hrs

Response rate88%

Recommended by100%of homeowners

Request Quote

Radon Detection and Reduction questions, answered by experts

Installation typically takes 1-2 days, depending on the system and property layout.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

The Ossian, IA homeowners’ guide to radon detection and reduction services

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

See all articles

Alison Kasch
•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
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•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Angi
•
Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
Amy Freeman
•
Apr 5, 2026Apr 5, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
Jacqueline DeMarco
•
Apr 10, 2026Apr 10, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.
Audrey Bruno
•
May 3, 2026May 3, 2026
How to Test for Radon in Your Home
Knowing how to test for radon will keep your home free and safe from this odorless gas—you just have to decide whether to do it yourself or hire a pro.