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*The Angi rating for Radon Detection And Reduction companies in Caldwell, ID 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 Caldwell, ID 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 September 23, 2026

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

Apex Radon LLC
5.0(
7
)
Radon Gas - Abatement

Serving Caldwell, ID and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"We hired Mr. Joeseph Danes, owner, of Apex Radon LLC in Boise, to mitigate radon in our home. This was not a simple project: our house has a partial slab, a section of full basement, and two crawl spaces. Apex Radon LLC was the only Boise company that could conduct under slab pressure tests. We admit that we are not the easiest homeowners to work with â two retired mechanical engineers. Other contractors have likely found us exasperating. To our delight, Joeseph matched our high standards and attention to detail. We found him to be hard working, very knowledgeable, thorough, professional, and personable. Because of our homeâ s complexity, Mr. Danes designed a two-stage system. Stage 1 has been installed and radon concentration throughout the house has already dropped below the USA recommended level. This may change in the winter when frozen ground can cause indoor radon to increase. If so, we will gladly hire Apex Radon to install Stage 2."
Response time9 hrs
Response rate97%
4 neighbors recently requested a quote
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Avatar for Idaho Radon Services, LLC
Idaho Radon Services, LLC
5.0(
3
)
Radon Gas - AbatementRadon Gas - Testing

Serving Caldwell, ID and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"I was advised that the radon in my house is at a safe level."
Fan Location
1st Floor
2nd Floor
2nd Floor Ceiling
Suction Point

+773

Response time12 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Presidential Inspections, LLC
Presidential Inspections, LLC
4.1(
51
)
Radon Gas - Testing

Serving Caldwell, ID and surrounding areas

Approved

In business since 2004

Free estimates

Small jobs welcome

"They were very quick to respond to my request for an appointment. My wife and I are having allergy symptoms when in our house. Craig was very helpful in explaining the procedure for testing the air quality in our home. He and his assistant were very respectful and pleasant. The samples were sent to a professional laboratory for analysis. We should have the results in a few days with recommendations on what we should do. Overall, I felt that I hired the best inspector and would highly recommend them to anyone in need of their services."
Improperl Installed Insualtion
Visible Mold
Frozen Pipes
No vapor barrier in the crawl space
Worn Roof

+3

Response time8 hrs
5 neighbors recently requested a quote
Recommended by79%of homeowners
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Avatar for Radon Be Gone Corp
Radon Be Gone Corp
4.7(
49
)
Radon Gas - AbatementRadon Gas - Testing

Serving Caldwell, ID and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"They were the best in experience and background, they went in and did their job in 24 hrs our radon gases decreased for 90%, I'm impressed, they are who they are"
work vehicles
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

The fan that pulls the radon out of the air needs to run continuously, so you may see an increase in your electric bill once you install the mitigation system. Additionally, you may see an increase in your heating or cooling bills, as the fan can cause some loss of hot or cool air.

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.

Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

The Caldwell, ID 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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