Bloomington, MN

Radon Detection and Mitigation Services in Bloomington, MN

Most homeowners make decisions about indoor environments based on what they can see, like mold, staining, deterioration, corrosion, leaks. Radon is the opposite problem. You don’t see it. You don’t smell it. It can sit quietly inside a home for years, building, concentrating, fluctuating with weather patterns and pressure changes, and nobody knows until they test.


Radon is soil gas. It moves based on the geology under your foundation, the cracks and seams in your slab, the negative pressure created when a furnace or HRV runs, the way air drafts through wall cavities, and how tightly your home is insulated. 


Bloomington has the additional context of older slabs, additions built across decades, basement conversions, and cold seasons where ventilation is sealed tight for months. All of this creates conditions that can trap radon and increase indoor concentration.


That’s why proper radon testing isn’t a formality but indeed, the only way to know the number. A good radon mitigation system is designed after evaluating how air is pulling through the house, how moisture interacts with subsurface material, where the lowest pressure zones exist, and what type of sealing is viable. 


A strong mitigation install also matters for resale since buyers in Minnesota are aware of radon, and well-documented mitigation becomes a value point in a listing. 1st Defense Radon Testing And Mitigation works methodically through accurate measurement, proper diagnostics, system design, installation, follow-up testing, and ongoing monitoring options. This is not guesswork. It’s engineering indoor air safety.

about - Bloomington, MN

Bloomington sits along the north bank of the Minnesota River just south of Minneapolis, built initially as a post-WWII suburb, tied directly into the region’s freeway grid. The city grew in scale, jobs, and density because of its location and access, with I-35W, Hwy 77, Hwy 169, and I-494 all running through or along it. 


Today, the Mall of America is the defining economic anchor here, still the largest enclosed shopping center in the U.S., drawing national brands, corporate campuses, and tens of thousands of jobs into Bloomington itself. Yet the city is not purely retail and freeway interchanges. Large tracts of protected land remain, Hyland Lake Park Reserve and the Minnesota Valley National Wildlife Refuge bring the outdoors right up against neighborhoods, offices, and commercial corridors.

An attic with black flexible ductwork, a white fan, and wooden beams; insulation covers the floor.

Our Services in Bloomington, MN

happy customers in Bloomington, MN

Steve called me and offered to come out and inspect my radon system and fix my problem within a couple hours of calling me. He replaced my defective fan and will be coming back to complete the rest of the issues next week. He was very prompt and knowledgeable.

Kathy S.

Did a great job! Fast service, came in under price, would hire again tomorrow.

Chuck M.

Very responsive and competitively priced. Did the job quickly and cleaned up afterwards

David H.

1st Defense was able to install the radon system the next day. The post installation radon level was down to 0.2. Very satisfied.

Garth D.

This is one of the best companies we’ve ever worked with! Steve is informative and does great work! Radon mitigation system is outstanding and doing exactly what it’s supposed to be doing!

Jessica O.

This company provided prompt and gracious service for considerably cheaper than their competitors. I had them replace the exhaust fan in my radon reduction system. I recommend them highly.

Stephen H.

Hire Us! Best and Top Rated Radon Detection and Mitigation Services in Bloomington, MN

Radon isn’t something to “wait and see” about because it’s a long-term exposure risk and the most common cause of lung cancer in nonsmokers. Bloomington homes benefit from transparent radon testing and precision mitigation design. 1st Defense Radon Testing And Mitigation brings that level of precision to every property with detailed diagnostics, mitigation systems that are sized and designed for the specific structure, and post-mitigation testing to verify the system is doing what it should.


If you’ve never tested, start there. If your last test was years ago, test again. If you have a mitigation system but aren’t sure it’s functioning correctly, get it evaluated. Call us today to schedule a visit.

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