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

Avatar for American Waterworks
American Waterworks
4.5(
173
)
Radon Gas - AbatementRadon Gas - Testing

Serving Dover, MN and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"This job was completed efficiently and professionally. A design specialist came to test and measure every detail for the project. The crew arrived with everything needed for the job. They worked very hard to install Waterguard in the concrete floors inside around the foundation to the sump pump basket. They also installed Geo-lock anchors to support a block wall that was bowed. This company has 36 years in business and provides excellent results and professional customer relations. Call Amer. Wtrwrks for a free estimate. You will not be disappointed. A wise investment of $11,270."
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time4 hrs
569 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for JJ Home Services
JJ Home Services
4.7(
53
)
Radon Gas - AbatementRadon Gas - Testing

Serving Dover, MN and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"We had a great experience with Justin and his crew. Initially we contacted him to replace some 65yr old windows, and he was the only contractor to bring to our attention that we had hail damage on the window wraps, siding, gutters, and roof. His experience really helped us thru the insurance claim process and it ended up being a huge cost savings for us. We were so impressed with his customer service, we decided to have him convert our 1-season porch into a 3-season porch, install tile flooring, replace some doors, and paint the interior and exterior of our home. He listened to our ideas, gave us options and suggestions, and helped create solutions for all of the projects. He's like a fiduciary for home improvement and we relied on his expertise to make some great choices to improve our home."
Mold Removal
Ask about or fireplace deal going on now!
Loose attic vents or improperly installed
Custom Stone
Tattoo Shop Remodel

+79

Recommended by92%of homeowners
Athelon Radon Services
New to Angi
Radon Gas - AbatementRadon Gas - Testing

Serving Dover, MN and surrounding areas

In business since 2010

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

Radon Detection and Reduction FAQs, answered by experts

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

Long-term exposure increases lung cancer risks. Prolonged homestay individuals and smokers encounter heightened vulnerability and exposure concerns.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

The Dover, MN 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.