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Find Radon gas testers in Marshalltown

Avatar for Iowa Radon Defense
Iowa Radon Defense
4.7(
45
)

Serving Marshalltown, IA and surrounding areas

Angi Approved

In business since 2020

Free estimates

Warranties offered

"Richard Songer was the tech who did the work. He was extremely fast worker, polite and took the time to answer any questions I had. Before he started the work my readings in the basement where in the low 20s. 24 hrs after he finished the work my readings where under 4."
Interior Install
Interior Install
Interior Install
Interior Install
Interior Install

+14

Response time1 day
80 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for AmeriServ Radon Mitigation
AmeriServ Radon Mitigation
5.0(
8
)

Serving Marshalltown, IA and surrounding areas

In business since 2011

Free estimates

Credit card accepted

AmeriServ Radon Mitigation of Iowa is an expert in radon detection, testing, and mitigation for your Iowa home, business, or school. AmeriServ Radon Mitigation service includes a 200% guarantee on all work performed and a 10-year warranty on radon mitigation systems. Combining over 75 years of construction experience, our fully insured and background checked specialists are committed to making sure each system is designed to fit your needs.. We are your leading radon testing and radon mitigation service provider.

Recommended by100%of homeowners
Avatar for Northern Duct Seal
Northern Duct Seal
New to Angi

Serving Marshalltown, IA and surrounding areas

In business since 2013

Northern Duct Seal seals duct work from the inside by use of computerized tools and equipment. The process takes one day and our technicians will provide pre-seal and post-seal duct leakage reports on the spot. The basic steps to do a duct seal are: 1) Pre-seal Test is done to measure duct leakage, 2) Registers, returns, and air handler coil are blocked off with foam plugs, 3) A UL-tested and approved aerosol is injected into the pressurized duct system, 4) A Post-Seal Test is performed to measure improvements and 5) A complete Report and Certificate are printed to provide the customer with a record of improvement. Duct sealing provides a solution to high energy bills, air flow/air balance issues, uneven temperatures, hot and cold rooms, excessive humidity, musty odors and fume smells from stored paints, solvents, pesticides, and radon gases. Northern Duct Seal will reduce duct leakage by up to 90%, saving customers an average of $600 - $850 a year, with a 2-3 year return investment, depending on variables such as weather, system usage, energy prices, and home design. Northern Duct Seal offers a 10- year warranty on the seals created by our technicians. The sealant itself has been UL tested and approved and is considered non toxic by OSHA. For a demonstration video of the duct sealing process please see the 'Ask This Old House' Video located under the Media tab on this page.

Aeroseal Technician
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FAQs for radon gas testing projects in Marshalltown, IA

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 Marshalltown, IA homeowners’ guide to radon gas testings

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