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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>

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

• <div><p>No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. 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 preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.</p></div>

Q: How is radon gas abatement professionally handled?

• <div><p>Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.</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>

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

*The Angi rating for Radon Detection And Reduction companies in Denison, 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 Denison, 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 February 12, 2025

Reviewed in February 2025
BJ was extremely professional and helpful. He was neutral to both parties to give them accurate and honest details. I would highly recommend him for your inspection!
Pauley Home Inspection, LLC
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Reviewed in December 2024
We've worked with Mad City to replace 6 windows total in our home now. Most recently, we had them replace a large picture window in my living room and we're very happy with the results. The salesman we've worked with has been very knowledgeable and honest. In fact, he's talked me out of...
Mad City Windows & Baths
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Reviewed in September 2024
The 5 guys were very attentive to protecting the furniture. They were kind and very quick. No damage was done to my belongings or my new townhome. I appreciated their willingness to change dates when my buyers loan was delayed a few days. All is well.
All My Sons Moving & Storage
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Reviewed in July 2022
Did a great job and paid attention to details!
Crews Lawn Care & Landscaping
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Reviewed in May 2022
He was very professional and knew his business, I appreciated that he was thorough and clean. He had the job done in no time.
Alexander Johnson
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Reviewed in April 2022
He did a great job and I am satisfied with the work.
Canales Home Improvement, LLC
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Reviewed in February 2022
Service was excellent start to finish, prompt, thorough, and courteous. The duct cleaning has greatly improved our home air quality! Thank you.
Duct Defense Midwest
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Reviewed in August 2021
Excellent work and very timely.
Geralyn Morales
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Reviewed in December 2020
John was very easy to work with and we are extremely happy with his work refinishing our table and chairs. They look new!
John Barry Furniture Repair
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Reviewed in November 2018
Very professional, great service, and very punctual. They are very friendly and helpful.
Midwest Satellite and TV
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Find Radon detection and reduction specialists in Denison

National Radon Defense Midwest

4.7(

)

Serving Denison, 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

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Milledge Construction

5.0(

)

Serving Denison, IA and surrounding areas

Approved

Free estimates

Warranties offered

Credit card accepted

"Milledge Construction installed evacuators in our homes to reduce radon levels...the installer was very professional and explained in detail what needed to be done...it is amazing how quickly the radon level has subsided in just 24 hours...the installation and equipment is of high quality...if you only suspect you have a radon infection you should call Milledge Construction first...we were very impressed with the radon reduction results...5 stars for sure..."

+56

Response time1 day

36 neighbors recently requested a quote

Recommended by100%of homeowners

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Home Sweet Home Inspect Iowa Facebook

4.8(

)

Serving Denison, 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.

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 present everywhere, complete avoidance is impossible. 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 preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

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.

The Denison, 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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