Top-rated radon detection and reduction specialists.

Best radon detection and reduction specialists near Spokane Valley, WA

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Spokane Valley, WA?

Select your specific project to find the pro for you.

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

Avatar for RADON TESTING & MITIGATION SOLUTIONS LLC
RADON TESTING & MITIGATION SOLUTIONS LLC
5.0(
8
)
Radon Gas - AbatementRadon Gas - Testing

Serving Spokane Valley, WA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Your allowed service choices do not allow for Radon testing, etc. I highly recommend â Radon Testing & Mitigation Solutionsâ , specifically Mr. Bejar for his respectful, knowledgeable, professional, and prompt services. Thank you"
Monroe & Broadway
Monroe & Broadway
Brown's Addition
Spokane City Hall
Lennar Homes

+3

Response time4 hrs
Response rate98%
13 neighbors recently requested a quote
Avatar for CP Home Service
CP Home Service
5.0(
3
)
Radon Gas - Testing

Serving Spokane Valley, WA and surrounding areas

Approved

Free estimates

Warranties offered

Credit card accepted

"Brian was really friendly and professional, and you could tell he was very thorough. He explained everything in a way that was easy to understand during the inspection, and the report he sent after was super detailed with pictures and notes on all the systems in the home. I especially liked that he included a section that called out the main issues to focus on. Overall, we were very happy with his service and would definitely recommend him to anyone."
Chimney inspection
Crawlspace
Old Roofing
Window Frame
Electrical Panel

+8

Avatar for Affordable Radon Services LLC
Affordable Radon Services LLC
5.0(
1
)
Radon Gas - AbatementRadon Gas - Testing

Serving Spokane Valley, WA and surrounding areas

In business since 2011

"This company was professional from start to finish! Setting up the appointment was quick and easy, they showed up on time and were concerned with my needs. They wanted to make sure the system was going in the proper spot, both inside and outside, and wore a mask and booties the whole time. I was impressed and will hire them again!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Recommended by100%of homeowners
Affordable Home Inspection, LLC
New to Angi
Radon Gas - Testing

Serving Spokane Valley, WA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

We pride our company on reliability, integrity and quality work. When Affordable Home Inspection, LLC is hired, we make it a point to provide the highest level of customer service. We work with both residential and commercial clients, and apply the same attention to detail regardless of project size or complexity. We look forward to earning your business! Thank you!

Showing 1-10 of 13
Radon Detection and Reduction FAQs, answered by experts

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.

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.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

Installing a mitigation system reduces radon levels, which can cause lung cancer, providing peace of mind and long-term health benefits. It can also increase your home’s value, as many buyers prefer properties with radon safety measures in place. The investment is relatively low compared to the potential health risks associated with prolonged radon exposure.

The Spokane Valley, WA 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.