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*The Angi rating for Radon Detection And Reduction companies in Park City, MT 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 Park City, MT 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 June 20, 2026

Top-Rated Radon detection and reduction specialists in Park City - Updated Nov 2026

Avatar for Yellowstone Radon
Yellowstone Radon
5.0(
4
)
Radon Gas - AbatementRadon Gas - Testing

Serving Park City, MT and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"These guys were awesome! Very professional and took pride in their work. They understood our time crunch to get this project done and made it happen! Would use then again in a heartbeat"
Sub Membrane system
Sub Membrane system
Sub Membrane system
Sub Membrane system
Fan Installations

+9

Response time6 days
Recommended by100%of homeowners
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Caldwell Property Inspections
New to Angi
Radon Gas - Testing

Serving Park City, MT and surrounding areas

In business since 2021

Free estimates

Credit card accepted

At Caldwell Property Inspections- our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

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Kamps Squared Home Inspections, LLC
5.0(
1
)
Radon Gas - Testing

Serving Park City, MT and surrounding areas

In business since 2021

Free estimates

Offers commercial services

Kamps Squared Home Inspections, LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations

Response time3 hrs
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Avatar for Iron Eagle Property Inspections
Iron Eagle Property Inspections
New to Angi
Radon Gas - AbatementRadon Gas - Testing

Serving Park City, MT and surrounding areas

In business since 2019

Free estimates

Credit card accepted

InterNACHI Certified home inspector offering cutting-edge inspections in the greater Billings area. Veteran owned and operated. All inspections guaranteed!

Additional Photos
Additional Photos
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Additional Photos

+4

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Radon Detection and Reduction FAQs, 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.

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.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

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).

The Park City, MT 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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