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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 steps should be taken if high radon levels are detected?

• <div><p>If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.</p></div>

Q: How much does it cost to replace a radon fan?

• <div><p>The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.</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: How long does radon mitigation take?

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

"RADON SYSTEM WAS NOT WORKING. (Installed by another company years ago). The phone contact was pleasant and efficient. The Technician came on the agreed day and the agreed time: he explained what was wrong, explained the options, then repaired the system so it is working better than it did when first installed."

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

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.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

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.

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

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

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