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Find Radon gas testers in Denver

Avatar for RF Home Inspections LLC
RF Home Inspections LLC
5.00(
7
)

Angi Approved

In business since 2024

Free estimates

Warranties offered

"As a Real Estate Agent, i have been a part of hundreds of Home Inspections and i was more than impressed with the knowledge, professionalism, and willingness to educate my Buyers about every aspect of the home. Not an over alarmist like Axium Inspections are, and more friendly than any other Inspection Company that I have worked with in the past. All Agents have their preferred Inspection Company but, I would hire RF before I worked with anybody else."
2 neighbors recently requested a quote
Avatar for PowerHouse Home Performance
PowerHouse Home Performance
5.00(
8
)

Angi Approved

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

"I can't say enough about Josh, our service man. He was on time an finished the job to our satifaction. He would be the one to call on any radon probleml To any one who has a radon problsem he is the one to call!!!! Tom"
3 neighbors recently requested a quote
Recommended by12%of homeowners
Best Option Restoration
5.00(
4
)

Angi Approved

In business since 2017

Free estimates

Emergency services offered

"I had never used Best Option Restoration before but had been referred to them by my neighbor. I was surprised by how quickly they responded (which was nice because I was pretty concerned). The same day, I had one of their managers out to my property to inspect the damage himself. He then reviewed the project with me, including the cost, the process for using my insurance, and the timeline. The work was completed on time. What I found most impressive was the communication throughout the entire process. I didn't feel like I was 'just another customer.' I have referred them to several within my neighborhood. I hope I don't have another broken pipe, but if I do, I know who I will call."
Recommended by75%of homeowners
Avatar for Lifetime Radon Solutions, Inc.
Lifetime Radon Solutions, Inc.
4.88(
120
)

Angi Approved

In business since 1993

Free estimates

Warranties offered

"Everyone I worked with was professional and answered all my questions. installation looks good. I have an Airthings continuous radon sensor. My radon was averaging 7 before. It is at 1.7 now."
76 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for All Colorado Radon Mitigation Inc
All Colorado Radon Mitigation Inc
4.97(
38
)

Angi Approved

In business since 2012

Free estimates

Warranties offered

"All Colorado Radon Mitigation, Inc. is an incredible company to work with. They perform quality work, and they are truly friendly and professional. The system that they installed was straightforward, but the work was top-notch. Highly recommend!"
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Stanton Engineering Solutions Inc.
Stanton Engineering Solutions Inc.
New to Angi

Angi Approved

In business since 2005

Free estimates

Stanton Engineering Solutions, Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

16 neighbors recently requested a quote
Avatar for Veteran Radon
Veteran Radon
5.00(
16
)

Angi Approved

In business since 2022

Free estimates

Emergency services offered

"Jason and Ken were quick to respond, very knowledgeable, and very friendly. They ensured that I understood the process and they did an efficient and thorough job installing a radon mitigation system in my home. I would highly recommend them. "
1 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Sharpe Brothers Limited
Sharpe Brothers Limited
5.00(
5
)

Free estimates

Emergency services offered

"It was spectacular. Clearly knowledgeable. They gave us recommendations for someone else to use that part of the service that work out extremely well. They gave us our test results within the prescribe amount of time."
Recommended by100%of homeowners
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Showing 1-10 of 387
FAQs for radon gas testing projects in Denver, CO

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 Denver, CO homeowners’ guide to radon gas testings

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