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*The Angi rating for Radon Detection And Reduction companies in Greenfield, 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 Greenfield, 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 May 23, 2026

Find Radon detection and reduction specialists in Greenfield

Avatar for Lee Safety & Environmental Services, Inc.
Lee Safety & Environmental Services, Inc.
4.6(
10
)
Radon Gas - Testing

Serving Greenfield, MO and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Friendly and knowledgeable, took the time to explain different aspects of testing process and types of molds."
Ozark Mold Clean-up Job
Ozark Mold Clean-up Job
Ozark Mold Clean-up Job
Ozark Mold Clean-up Job
Ozark Mold Clean-up Job

+14

Response time2 days
Response rate86%
17 neighbors recently requested a quote
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
52
)
Radon Gas - Abatement

Serving Greenfield, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Overall everything was pretty good. I felt the installation could have looked much cleaner but it is fine. I still haven't re tested to see what my radon levels are now."
Recommended by97%of homeowners
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Avatar for American Home Inspectors Inc.
American Home Inspectors Inc.
4.7(
7
)
Radon Gas - AbatementRadon Gas - Testing

Serving Greenfield, MO and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"He is very personable, knowledgeable, thorough and his report was very clear to understand. He emailed all the pictures and report to me the very next day. "
Recommended by85%of homeowners
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Avatar for A Pro Home Inspection Services
A Pro Home Inspection Services
2.8(
3
)
Radon Gas - Testing

Serving Greenfield, MO and surrounding areas

In business since 2006

Free estimates

We pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!\n\n

Response time5 hrs
Response rate100%
Recommended by66%of homeowners
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Avatar for Crawlspace Medic of Springfield
Crawlspace Medic of Springfield
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving Greenfield, MO and surrounding areas

In business since 1991

Free estimates

Warranties offered

Healthy Homes Start From the Ground Up\n\nAt Crawl Space Medics, we diagnose and treat the hidden issues that threaten your home’s health and stability. Most homeowners ignore the crawl space, but dampness and mold beneath your feet can lead to poor air quality, high energy bills, and structural damage. We provide a permanent "prescription" to keep your home dry and safe.\n\nOur Specializations:\n• Encapsulation: High-grade vapor barriers for a clean, dry foundation.\n• Moisture Control: Dehumidifiers and drainage systems to stop standing water.\n• Structural Repair: Fixing sagging floors with joist reinforcement and jacks.\n• Mold Remediation: Safe removal to protect your family’s respiratory health.\n\nProtect your investment. Contact Crawl Space Medics today for a free inspection!

Encapsulation
3 neighbors recently requested a quote
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Radon Detection and Reduction questions, answered by experts

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.

Installation typically takes 1-2 days, depending on the system and property layout.

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

The Greenfield, MO homeowners’ guide to radon detection and reduction services

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