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Q: What types of radon mitigation systems are available?

• <div><p>Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.</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 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: Why is my radon mitigation system so loud?

• <div><p>Your radon mitigation system may be loud because it&rsquo;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.</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>

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Verified Reviews for Radon Detection And Reduction pros in Monticello, IL

*The Angi rating for Radon Detection And Reduction companies in Monticello, IL 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 Monticello, IL 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 August 22, 2025

Reviewed in August 2025
Michael Lyday was the technician and was very professional and courteous. He set a trap and returned the next morning to find a female raccoon. He also found she’d been nursing and captured two kits in the crawl space. He told me to tell him if I heard anymore sounds which I did when he returned...
Plunkett's Pest Control
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Reviewed in December 2024
I had 6 stumps and an entire large bush pulled out by this company. They hauled off everything and filled in the holes where the stumps and bush had been. They leveled the soil in all areas where they had worked, and there were no ruts left from the machinery they used in the yard at all. I...
Kaskaskia Outdoor Specialties LLC
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Reviewed in October 2024
Tyler and his entire team worked quickly and effectively to get our old, improperly installed metal roof removed and cleaned up and installed an entirely new shingle roof as well as all new sheeting to insure my roof was installed correctly and would last for numerous years to come. He and his...
Redemption Contractors LLC
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Reviewed in September 2023
Clean Green was easy to work with, completed work in a timely manner and did a fine job on the tree removals. We would hire him gain.
Clean Green Services
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Reviewed in July 2023
it went great, very professional and very hard workers
Baxter Utility Services
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Reviewed in February 2023
The wok was done fast and adficient. He was very respectable to me and to my house. The tub came out great and saved me a ton.
Premier Glazing & Restoration LLC
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Reviewed in March 2022
Very prompt and thorough with inspection
Pristine Inspections & Testing, Inc.
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Reviewed in October 2021
It was a flea infestation. I know fleas are hard to get rid of but they were still very present after the initial treatment. Six days later they came back and did another treatment at no extra cost, and while we're still seeing some live fleas, it's much better. The manager and technicians...
Independent Pest Solutions, LLC
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Reviewed in September 2021
Tony was very prompt in coming by to take a look at the job. He was very professional and explained what needed to be done and how long it would take, They were done in just a couple of days and it turned out beautifully, i would highly recommend them to take of your project.
Clifton Excavating
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Reviewed in July 2021
Rex reached out to us right away. He completed our survey work the next day. Our land included some overgrown areas, a creek and old pins. He got it done and was patient with my questions!
Rex A Bradfield
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Radon Detection and Reduction questions, answered by experts

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

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.

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.

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.

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.

The Monticello, IL 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

Mitchell Grant
•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Alison Kasch
•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
Angi
•
Mar 18, 2026Mar 18, 2026
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.
Amy Freeman
•
Jul 9, 2026Jul 9, 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.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 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.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 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.