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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: 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: Is radon a serious problem?

• <div><p>Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).</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 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>

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Verified Reviews for Radon Detection And Reduction pros in Vienna, MO

*The Angi rating for Radon Detection And Reduction companies in Vienna, MO 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 Vienna, MO 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 March 28, 2025

Reviewed in March 2025
steady, extreme professional, courteous and experienced.
Grass Hunters Lawn and Tree Service LLC
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Reviewed in March 2024
He cared enough to stop in the middle to allow the grou d to dry and settle before moving onto the next stage of the project. Good man and easy to work with. He never stopped or went slow. Fast.
Shipman Land Solutions, LLC.
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Reviewed in January 2024
Very knowledgeable about the entire process. I would highly recommend them to everyone. They preformed there test and then scheduled a time for the removal process. They were very informative along the way. A+++++ all the way.
Moldman Central MO
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Reviewed in September 2023
perfect. i received a lot of good info on my future home repairs. sam was very helpful and knowledgable. i'd recommend this company and will use them again.
Sam's Home and Commercial Inspectors
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Reviewed in November 2022
The technician was on time when he came to my home. He was, however, unable to diagnose and resolve the problem codes RH and NF except to say that, based on his experience and opinion, I needed to replace all electrical components in the tub. He had no external equipment to diagnose and isolate...
Chester Pool and Spa LLC
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Reviewed in November 2021
Did a great job. Removed the wood from the yard and left it in good condition.
Brandt's Lawncare and Tree Removal
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Reviewed in March 2021
The man called about 30 mins before he arrived on time and did a great job
Summit Power Washing Solutions
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Reviewed in January 2021
Saw them at the Belle Swap Meet, heard from a friend and the good commercial. It has changed the appearance of the home is good quality product. The crew was very friendly and very informative.
Continental Siding Supply
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Reviewed in January 2021
Saw them at the Belle Swap Meet, heard from a friend and the good commercial. It has changed the appearance of the home is good quality product. The crew was very friendly and very informative.
Continental Siding Supply, Inc.
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Reviewed in December 2020
Rodney and his friend put up a television antenna for us, they will return for some adjustments because it became dark before they were finished but we do have several channels to pick from..
Cooper's Handyman Services, LLC
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Find Radon detection and reduction specialists in Vienna

Braun's Inspection Consultants

4.7(

)

Serving Vienna, MO and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"James performed the inspection like a real professional."

Recommended by100%of homeowners

Serving Vienna, MO and surrounding areas

In business since 2005

Free estimates

Mid MO Inspectors will provide you or your business with a full service approach to all your inspection needs. Please feel confident in contacting Mid MO Inspectors for your next inspection.

Recommended by100%of homeowners

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Brandsted Property Preservation

New to Angi

Serving Vienna, MO and surrounding areas

In business since 2011

Free estimates

With over 10 years of experience in the home inspection industry, we are the experts you need to take care of your home. We will treat your home as we would treat our own. Give Brandsted Home Inspections a call today. We look forward to working with you.

Response time10 mins

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Quality Home Inspections Plus, LLC

New to Angi

Serving Vienna, MO and surrounding areas

Quality Home Inspections Plus, LLC is the solution to all of your home inspection needs. We take great pride in our extreme professionalism, timeliness, and superior customer service on every job. We make sure to develop a lasting relationship, so that the next time service is needed, there will be no question on who to call. Satisfaction guaranteed!

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Radon Detection and Reduction questions, answered by experts

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.

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.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

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.

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.

The Vienna, MO 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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