# Radon Mitigation and Testing in Adel, Iowa > Radon testing and mitigation in Adel and Dallas County. Iowa HHS-credentialed techs and a 5-year warranty. URL: https://radonmitigationdesmoines.com/service-areas/adel/ Serving Adel & nearby areas # Radon Mitigation and Testing in Adel, Iowa The trusted local radon experts in Adel since 2016. Schedule An Estimate [/free-estimate/ →](/free-estimate/) Call (515) 218-7447 [tel:+15152187447 →](tel:+15152187447) Last updated October 27, 2026 ![Radon Mitigation Des Moines service van parked in front of a central Iowa home](/images/misc/radon-mitigation-des-moines-se-1793203436759-ee84j6.webp) - Certified Radon Techs - 5-Year Warranty - 24/7 Support Know the risk ## Radon Mitigation Problems in Adel Homes Block and stone basements in the blocks around the Adel courthouse. - 01 ### Block and stone near the square Adel dates to 1847 and stayed small for more than a century, so the streets near the 1902 courthouse are lined with older homes on block or stone foundations. - 02 ### Gas comes through the walls Hollow block cores and mortar joints carry soil gas up through the walls, not just the floor, so sealing the slab alone does not fix it. - 03 ### Our fix in Adel We combine sub-slab suction with wall and sump sealing, sometimes with a second suction point, and verify with a post-mitigation test. Our services ## What We Offer in Dallas County Radon testing, mitigation, new construction, commercial systems and maintenance in Adel. Residential Radon Mitigation We size the system to your foundation: basement sub-slab, crawlspace, exterior or vapor intrusion. View service → [/residential-radon-mitigation/ →](/residential-radon-mitigation/) Radon Testing We run CRM, short-term, long-term, real estate and post-mitigation tests with credentialed testers. View service → [/radon-testing/ →](/radon-testing/) New Construction Systems We rough in passive systems for builders, test after move-in and upgrade passive pipes to active. View service → [/new-construction-radon-systems/ →](/new-construction-radon-systems/) Commercial Radon Systems We test and mitigate schools, HUD multifamily, offices, warehouses and vapor intrusion sites. View service → [/commercial-radon-systems/ →](/commercial-radon-systems/) Radon System Maintenance We fix fan alarms, error codes, pipes and joints, and maintain and inspect radon systems from any installer. View service → [/radon-system-maintenance/ →](/radon-system-maintenance/) Air Duct Cleaning We clean the supply and return ducts in Des Moines homes and leave a written quote before any work. View service → [/air-duct-cleaning/ →](/air-duct-cleaning/) Every job completed by Radon Mitigation Des Moines [/ →](/) in Adel gets a system designed for the foundation, installed by certified technicians and tested when it is done. Why choose us ## Why Dallas County Homeowners Call Us In Adel we are most often called for residential radon mitigation, radon testing and new construction radon systems. On every job you get: - Older foundation experience - Passive system testing - Credentialed techs - 5-year warranty - 24/7 support ![Finished radon mitigation system on the side of an Iowa suburban home](/images/features/finished-radon-mitigation-system-with-white-pvc-pi.webp) How it works ## How It Works in Four Steps Most homes are finished in one day. We test every system before we call it done. 1. 1 ### Test A 48-hour continuous radon monitor test in your home, or send us an existing result. ![Continuous radon monitor on a small table in a Des Moines home](/images/misc/continuous-radon-monitor-sitting-on-a-small-table-.webp) 2. 2 ### Design We review your foundation, slab sections and sump, then pick suction points and routing. ![Technician running pressure field extension diagnostics in a basement](/images/features/technician-running-pressure-field-extension-diagno.webp) 3. 3 ### Install We install the system, seal the entry points and add a manometer. Most homes take one day. ![Finished radon mitigation system with white PVC pipe on the side of a home](/images/features/finished-radon-mitigation-system-with-white-pvc-pi.webp) 4. 4 ### Verify A post-mitigation test proves the level dropped. The system has a 5-year warranty. ![U-tube manometer on a radon pipe showing steady suction](/images/misc/close-up-of-a-u-tube-manometer-on-a-white-radon-pi.webp) Schedule An Estimate [/free-estimate/ →](/free-estimate/) Reviews ## Reviews From Adel Homeowners ★★★★★ > "Old house with a block foundation. They sealed more than I expected and the numbers dropped a lot." Beth S. · Adel ★★★★★ > "Fair quote, careful install and a clear post-test report." Kyle J. · Adel Read our reviews on Google → [https://search.google.com/local/reviews?placeid=ChIJRTO3QJee7ocRgEpZOJOW_-U →](https://search.google.com/local/reviews?placeid=ChIJRTO3QJee7ocRgEpZOJOW_-U) Local knowledge ## Radon Reduction for Old and New Homes GETTING THERE ### Reaching Adel We reach Adel through Waukee on **US Route 6** or by I-80 and US Route 169, covering downtown near the **Dallas County Courthouse** and the newer neighborhoods along the Raccoon River Valley Trail. LOCAL HOMES ### Older Core, Newer Edges Adel stayed small for most of its history, so homes near the courthouse square are often older houses with block or stone foundations and open sumps. These need wall and sump sealing along with a sub-slab system. The population nearly doubled between 2010 and 2020, so the edges of town are newer. Those homes may have passive pipe that should be tested after move-in. LOCAL FACTS THAT SHAPE THE JOB - Adel is the Dallas County seat, sits on the North Raccoon River and uses ZIP code 50003. (en.wikipedia.org) [https://en.wikipedia.org/wiki/Adel,_Iowa →](https://en.wikipedia.org/wiki/Adel,_Iowa) - Adel dates to 1847 and grew slowly for most of its history, with 3,304 residents in 1990. (en.wikipedia.org) [https://en.wikipedia.org/wiki/Adel,_Iowa →](https://en.wikipedia.org/wiki/Adel,_Iowa) - The population jumped from 3,682 in 2010 to 6,153 in 2020, with 2,396 housing units counted in 2020. (en.wikipedia.org) [https://en.wikipedia.org/wiki/Adel,_Iowa →](https://en.wikipedia.org/wiki/Adel,_Iowa) - The Dallas County Courthouse in downtown Adel was completed in 1902. (en.wikipedia.org) [https://en.wikipedia.org/wiki/Adel,_Iowa →](https://en.wikipedia.org/wiki/Adel,_Iowa) Service areas ## Where We Work in Adel ### Areas served - Downtown Adel - Courthouse square - North Raccoon River area - Raccoon River Valley Trail area - Newer Adel subdivisions ### Landmarks - Dallas County Courthouse - Raccoon River Valley Trail - North Raccoon River - Downtown courthouse square ### How we get there We reach Adel through Waukee on US Route 6 or by I-80 and US Route 169. ZIP codes: 50003 FAQ ## Adel Radon FAQs ### Yes. Stone and block walls let soil gas through mortar joints and hollow cores, so we seal the walls and sump along with sub-slab suction, and add a second point if diagnostics call for it. ### Yes. New homes can test high with or without a passive pipe. A 48-hour test after move-in tells you whether a fan is needed. ### Yes. We schedule 48-hour continuous radon monitor tests inside inspection windows and send an hourly report. Still have a question? Our support line answers 24 hours a day, 7 days a week. Schedule An Estimate [/free-estimate/ →](/free-estimate/) Call (515) 218-7447 [tel:+15152187447 →](tel:+15152187447) Service areas ## Also Serving Near Adel - Waukee [/service-areas/waukee/ →](/service-areas/waukee/) - De Soto [/service-areas/de-soto/ →](/service-areas/de-soto/) All service areas → [/service-areas/ →](/service-areas/) Des Moines & Central Iowa ## Book Radon Mitigation in Adel Schedule An Estimate [/free-estimate/ →](/free-estimate/) Call (515) 218-7447 [tel:+15152187447 →](tel:+15152187447)