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Avatar for Mile High Radon Control, LLC
Mile High Radon Control, LLC
5.0(
88
)
Radon Gas - Abatement

Serving Boulder, CO and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"My new house's radon test came in high enough for the inspector to flag it. After moving in, I called up this company and got a hold of Darren. Quick and easy process. He came out for an estimate within a few days, then again 2 weeks later to install the system in an afternoon. He even painted the vent to match the siding, no extra cost (though I did provide the paint/supplies)! Price was very reasonable. I high recommend these guys!"
RADON MITIGATION SYSTEM
SUMP PIT DEPRESSURIZATION
SUB SLAB DEPRESSURIZATION
TILE DRAIN RADON SYSTEM
RADON SYSTEM

+2

Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Custom Radon Mitigation Solutions
Custom Radon Mitigation Solutions
5.0(
41
)
Radon Gas - Abatement

Serving Boulder, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"Custom Radon was fantastic! Gage got off to a great start by showing up early. He answered all of my questions and seemed very knowledgeable in the field of radon mitigation. His workmanship looks great and very well done. I would recommend Custom Radon to anyone who needs mitigation work!"
Radon System
Radon System
Radon System
Radon System
Radon System

+4

Response time9 hrs
Response rate92%
2 neighbors recently requested a quote
Avatar for Affordable Radon Solutions, LLC
Affordable Radon Solutions, LLC
4.7(
374
)
Radon Gas - Abatement

Serving Boulder, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"The company rep was knowledgeable and hard-working, he even worked with me to get around some technical issues before he started the install. I do wish there would have been a follow up and more education with the “how-to” of the test that I had to set up and send in to ensure that the unit is working properly. All in all, I would recommend Affordable Radon Services for radon mitigation installation."
 custom fit pipe-garage install
 Blending isn't a problem
 suction point T intersection into crawl space
Garage Attic Install
 close up view of radon mitigation fan

+25

Response time2 days
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for All Colorado Radon Mitigation Inc
All Colorado Radon Mitigation Inc
4.9(
40
)
Radon Gas - TestingRadon Gas - Abatement

Serving Boulder, CO and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"All Colorado Radon tackled a particularly difficult radon mitigation that other companies refused to mitigate. They were very thorough and knowledgeable. Most of all, they were successful in reducing radon levels to well below government standards. We would use them again."
Basic Exterior System Pictures
Basic Exterior System Pictures
Basic Exterior System Pictures
Basic Exterior System Pictures
Additional Photos

+1

Response time2 days
Response rate95%
1 neighbors recently requested a quote
Avatar for Radon Mitigation of the Rockies
Radon Mitigation of the Rockies
4.7(
55
)
Radon Gas - Abatement

Serving Boulder, CO and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Very professional, courteous, and knowledgeable. They didn't oversell me and corrected the issues I was having with persistence and creativity. They got things up and running again with the least amount of work necessary. I highly recommend Rocky Mountain Radon."
18
17
16
15
14

+34

Response time1 day
Recommended by98%of homeowners
Avatar for Radon Safety, LLC
Radon Safety, LLC
4.8(
8
)
Radon Gas - Abatement

Serving Boulder, CO and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

"HOLLY THE OFFICE MANAGER IS GREAT TO WORK WITH. I HAD RECEIVED AN ESTIMATE FOR RADON MITIGATION BACK IN MARCH AND WHEN I CALLED IN DECEMBER, SHE IMMEDIATELY SAID THE QUOTE WAS STILL GOOD. JASON ADAMS DID THE INSTALL AND DID A GREAT JOB. HE WAS VERY CAREFUL AND DID VERY EXACTING WORK. I WOULD HIGHLY RECOMMEND RADON SAFETY LLC. DAVE MAHAN, LAFAYETTE, CO."
Radon Mitigation Install
Response time1 day
Recommended by100%of homeowners
Avatar for Master Mitigators
Master Mitigators
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving Boulder, CO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Master Mitigators works with homeowners, buyers, sellers, real estate agents, builders, and business owners across Denver and the Front Range, where radon exposure remains a recognized concern. Colorado's soil and foundation construction create conditions that require informed assessment and tailored response. Addressing radon isn't only about installation—it's about understanding what's beneath your property and how to respond effectively.\n\nYou'll receive an evaluation that accounts for your foundation type, soil composition, and property layout. From there, the focus shifts to planning a system that fits your space without disrupting daily routines or compromising structural integrity. Every property presents different variables, and your solution should reflect that.\n\nReach out to Master Mitigators to schedule a radon assessment for your home or business.

Project Photos
1 neighbors recently requested a quote
Avatar for RF Home Inspections LLC
RF Home Inspections LLC
5.0(
7
)
Radon Gas - Testing

Serving Boulder, CO and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

At RF Home Inspections, we provide thorough, reliable, and unbiased home inspections to help buyers, sellers, and agents make confident decisions. Based in the Denver metro area, our certified inspectors deliver detailed evaluations of every major system in the home, including structure, roof, electrical, plumbing, HVAC, and more.\n\nWe also offer radon testing, sewer scopes, mold testing, infrared thermal scans, and full inspection packages to give our clients the most complete picture possible. Our mission is to educate homebuyers, protect investments, and build lasting relationships with agents through accuracy, professionalism, and fast turnaround times on all reports.\n\nWhether you’re purchasing a home, preparing to list, or needing an annual checkup, RF Home Inspections is committed to providing top-quality service you can trust.

Full Home Inspection
Full Home Inspection
Full Home Inspection
Full Home Inspection
Full Home Inspection

+6

Response time3 hrs
4 neighbors recently requested a quote
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Radon Detection and Reduction questions, answered by experts

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

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.

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

The Boulder, CO 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.