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Q: How long does a radon mitigation system last?

• <div><p>The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.</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 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: 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: How long does the radon abatement process usually take?

• <div><p>Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Sheridan, MT

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

Reviewed in April 2026
They did amazing work!! I will definitely hire these folks again.
All Taped Up
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Reviewed in January 2026
Our landscaping was in poor shape. We live in a very remote area. Daniel came out and we showed him what we wanted to have done. We knew it would be a two-phase job (removing existing landscaping, trees and rock on our 2 acre parcel. Then designing a new landscape and install). We were trying to...
Oasis Landscape & Excavation LLC
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Reviewed in May 2023
Kelvin was very professsional, personable, and knowledgeable. He arrived on time, had all the right tools, and worked diligently to get the tasks done. I was very happy with his service and highly recommend him to all.
Sand and Sun Electric, LLC
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Reviewed in March 2020
They did a great job. We were pleasantly surprised by how good of Job they did and how nice the windows look. I had high expectations but they surpassed them. These aren’t going to be cheap but you get what you pay for. By just replacing half our windows our house is noticeably warmer.
Renewal by Andersen of Montana
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Reviewed in December 2019
Very prompt and on time
Held Enterprises, LLC
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Reviewed in May 2019
Miguel and his team did a great job. I was very impressed with their professionalism as well as their over all customer service. The entire team was very friendly and they did a great job at a really good price.
Painters Plus, LLC
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Reviewed in April 2019
These guys were great! Even with other problems other than HVAC they were able to advise and get the parts need in UNDER AN HOUR! I have a meeting later in the day and they got it done! SAME DAY!
Specialty Repair, LLC
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Reviewed in February 2014
Given their responsiveness and availability on short notice, I would use them again when in a pinch. Next time I might haggle with them a bit on the rate to get it down just a bit. :)
MVP Plumbing & Drain Services
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Reviewed in June 2012
They were great. I got bids from three other contractors on Angie's List. They had a competitive price, and they seemed to be the most professional. I liked the merchandise.
Dulles Glass & Mirror
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Find Radon detection and reduction specialists in Sheridan

Affordable Radon Services, LLC

4.6(

265

)

Serving Sheridan, MT and surrounding areas

In business since 2011

Free estimates

Warranties offered

"Brandon with Affordable Radon came out to install a mitigation system. Brandon was AWESOME, professional, polite, informative and did a wonderful job! I would highly recommend him to anyone needing your service. He went above and beyond! ***** :)"

Response time5 hrs

Recommended by97%of homeowners

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Gallatin Home Inspections, LLC

5.0(

)

Serving Sheridan, MT and surrounding areas

In business since 2017

Free estimates

Credit card accepted

I am here to help you make one of the most important decisions in your life, the purchase of your new home. When you hire us you can be confident that you will gain the knowledge necessary to make an informed decision on your new investment. Contact me now to begin getting your home inspection under way.

Response time5 hrs

Recommended by100%of homeowners

Serving Sheridan, MT and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"Ben is thoroughly knowledgeable and answered all of my questions kindly and patiently. The price was fair. I highly recommend him."

Recommended by100%of homeowners

Serving Sheridan, MT and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Daniel was prompt, careful and went the extra distance to get my heating and hot water system replaced as the weather was turning cold. He did an excellent job and I recommend him highly."

Recommended by100%of homeowners

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Caldwell Property Inspections

New to Angi

Serving Sheridan, 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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TCH Builders & Remodeling

4.0(

)

Serving Sheridan, MT and surrounding areas

In business since 1999

Emergency services offered

Credit card accepted

If you dream it, we can build it. What's the biggest difference between us and them? We build to last! We offer a full line of Green and Energy Star Certified products, backed by our labor and manufacturer's lifetime transferable warranties. Credit Cards Welcome Financing Available OAC.

Recommended by100%of homeowners

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Radon Detection and Reduction questions, answered by experts

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

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.

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 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.

Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.

The Sheridan, 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.

See all articles

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•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
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How Much Does Radon Remediation Cost? [2026 Data]
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How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
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Apr 5, 2026Apr 5, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
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May 2, 2026May 2, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
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Apr 10, 2026Apr 10, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.