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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 February 17, 2026

Find Radon detection and reduction specialists in Caldwell

Apex Radon LLC
5.0(
7
)

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
Recommended by28%of homeowners
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Avatar for Presidential Inspections, LLC
Presidential Inspections, LLC
4.1(
51
)

Serving Caldwell, ID and surrounding areas

Approved

In business since 2004

Free estimates

Small jobs welcome

"Professional that helped explain the entire process for testing for mold in the house. Very knowledgable, professional, and punctual."
Improperl Installed Insualtion
Visible Mold
Frozen Pipes
No vapor barrier in the crawl space
Worn Roof

+3

Response time8 hrs
12 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
)

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
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+7

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

You can vent radon out of your house sometimes by simply opening a window, but it won’t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

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.

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 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 Caldwell, ID homeowners’ guide to radon detection and reduction services

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