Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Greenfield, IA

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 long can you go without a radon fan?

• <div><p>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.</p></div>

Q: What are the benefits of radon mitigation?

• <div><p>Mitigation reduces radon levels, protecting your health and complying with safety standards.</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>

Q: What level of radon is considered safe or dangerous?

• <div><p>No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.</p></div>

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

*The Angi rating for Radon Detection And Reduction companies in Greenfield, 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 Greenfield, 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 15, 2026

Reviewed in May 2026
Great team to work with. Always kept us in the loop. And when it came time for the install, the installer was professional and courteous and just an all around nice guy. Highly recommend
Mad City Windows & Baths
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Reviewed in February 2025
I had the inside and outside remodeled. I came home and thought a new house had been moved in. New wood floors throughout except the bathroom, it has tile on it, new shower, toilet. Outstanding been wrapped, insulated and new siding. The house is amazing. Thank you JF Construction.
J Ford Construction LLC
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Reviewed in March 2024
Wonderful service! Iâ ve had Leeâ s garage doors come out on two separate occasions, once to install an operator and more recently to repair and replace my garage door springs. He scheduled us right away, was extremely kind and explained everything to me! He does great work. I would highly...
Lee's Doors LLC
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Reviewed in September 2022
Easy to work with. On time and got job done with no problems.
S & K Insulation Services
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Reviewed in July 2021
Excellent with Sales and installation. Very Professional
Renewal by Andersen
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Reviewed in November 2018
Courteous, let me know of delay. Did the job and was under the estimate!
Vorthmann Computer Repair
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Reviewed in June 2018
After dealing with all the back and forth offers and realators wanting us to pay more it was nice to have a professional on our side
Southern Iowa Home Inspections, LLC
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Reviewed in December 2017
The crew did a great job. Showed up and performed as expected. Hauled old door away. Clean up was great as well
Overhead Door Company of Des Moines™
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Find Radon detection and reduction specialists in Greenfield

National Radon Defense Midwest

4.7(

)

Serving Greenfield, IA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"National Radon Defense Midwest employees were very knowledgeable and helpful. As we were selling our house we discovered that we had high radon readings and needed to mitigate the problem. They explained to us the process and clearly identified what they would recommend to resolve the issue. We thought it was very reasonably priced and feel confident intheir products, staff and installation"

Crawlspace Encapsulation with Radon Mitigation

+15

Response time1 day

36 neighbors recently requested a quote

Recommended by96%of homeowners

Serving Greenfield, IA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"We had a serious Radon issue in our home and when others couldn’t even return my calls Pete not only did, he worked hard to get us into his schedule. Extremely satisfied with Pete and the job he did. I will hire Pete for other needs around our home. Do not hesitate to hire Pete. You will be happy."

Recommended by100%of homeowners

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Home Sweet Home Inspect Iowa Facebook

4.8(

)

Serving Greenfield, 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

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Radon Detection and Reduction questions, answered by experts

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

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.

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

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.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

The Greenfield, 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.

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•
Mar 18, 2026Mar 18, 2026
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