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Find Radon gas testers in Spokane

Avatar for RADON TESTING & MITIGATION SOLUTIONS LLC
RADON TESTING & MITIGATION SOLUTIONS LLC
5.0(
8
)

Serving Spokane, 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 time5 hrs
Response rate97%
14 neighbors recently requested a quote
Avatar for CP Home Service
CP Home Service
5.0(
3
)

Serving Spokane, WA and surrounding areas

Approved

Free estimates

Warranties offered

Credit card accepted

CP Home Service provides professional residential and commercial inspections focused on helping property owners stay ahead of problems and make informed decisions. Founded by Brian Abbott, the business is built on over 30 years of hands-on experience in construction, facilities management, and property maintenance. That background brings a practical, real-world approach to every inspection—looking beyond surface-level issues to identify how systems perform and where risks may develop over time. Services include buyer and pre-listing inspections, maintenance evaluations, and specialty services such as sewer scopes, thermal imaging, and drone roof inspections. Reports are clear, detailed, and designed to be useful—not overwhelming. CP Home Service operates with integrity, clear communication, and a commitment to delivering accurate, unbiased information so clients can move forward with confidence.

Chimney inspection
Crawlspace
Old Roofing
Window Frame
Electrical Panel

+8

Avatar for Cascade Radon Inc
Cascade Radon Inc
4.9(
157
)

Serving Spokane, WA and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"The whole process from testing, system design and installation went better than I ever expected. Everyone at this company was professional, competent and friendly. They answered all my questions, the installation went great and they were able to reduce my radon levels to barely detectable levels. I would recommend this company to anyone needing radon mitigation."
Recommended by99%of homeowners
Avatar for Evergreen Property Inspection LLC
Evergreen Property Inspection LLC
5.0(
61
)

Serving Spokane, WA and surrounding areas

In business since 2010

Free estimates

Warranties offered

"Sean was thorough and professional he put my mind at ease by pointing out things that were major issues as well as small issues. he gave me tips and lifetimes of the roof and various other things. He also offers a radon test for an additional charge too. I received my report early the next day. I would recommend him to all my friends and family."
Recommended by100%of homeowners
Avatar for Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
4.8(
347
)

Serving Spokane, WA and surrounding areas

In business since 1995

Free estimates

Warranties offered

"<p>it was superb! they easiest, hassle free Radon test in town, with extremely proficient people -- very knowledgeable and very people-friendly! they took their time to explain things on the phone to me before I committed. the test came back within 10 days or so -- via email. which is very convenient. it was very clear as it is, but I like talking through it and get advice. they were instantly available to discuss. they gave me future tips to keep on top of all things Radon related. </p> <p>I have to say that all this comes to be after 3 months of many back and forths with 3 other companies -- none of the other companies could be bothered to schedule a time, and those who did, never showed up.. many times over. I don't know why I was so patient with them and I wish had discovered Environmental Testing & Research Laboratories much sooner.</p> <p>Really highly recommend them!</p> <br />"
Recommended by93%of homeowners
Avatar for Premier Basement Systems
Premier Basement Systems
4.9(
27
)

Serving Spokane, WA and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"We bought the simple radon detection test and found that we had a serious radon problem. Our test restults came back at 50 pc vs. the 4 that is allowed. I got three estimates from radon abatement companies. While all of the do work in this area and are licensed, Premier Basements is local. (One contractor services all of Idaho and the other is based out of Spokane.) Also, they matched another contractor's slightly lower rice and were available sooner to start the work. They put in the system as promised and did a great job. They kept the worksite clean and cleaned up after themselves when they were done. Unfortunatlely, the system they put in didnt' bring our radon level down enough. They were reading about 9 with the new system. HOWEVER, Premier Basements guarantees their work, so they came back and put a bigger fan on the system and retested. They got the levels down to 0.4, which we were very happy with. Our dealings with Monte, Heather, and the two installers were excellent. They area ll professionals and did their jobs well. I would highly recommend them to anyone looking for radon abatement work. I would also give them a call if I had a wet basement or needed other work in their areas of expertise. We were very satisfied. Mary"
Recommended by100%of homeowners
NORTHWEST RADON
5.0(
1
)

Serving Spokane, WA and surrounding areas

"Excellent. It's an old, remodeled house that required some accommodation of the plan, and some re-do of the radon reduction installation. NW Radon was responsive, cheerful, and very professional -- a very positive experience, after a much less pleasant and less professional performance by another radon mitigation company in the area."
Recommended by100%of homeowners
Showing 1-10 of 20
FAQs for radon gas testing projects in Spokane, WA

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The Spokane, WA homeowners’ guide to radon gas testings

From average costs to expert advice, get all the answers you need to get your job done.