Protect Your Home and Family with Professional Radon Testing
Radon is a naturally occurring radioactive gas that can enter homes through cracks in foundations, crawl spaces, sump pits, and other openings. Because it is colorless, odorless, and tasteless, the only way to know if your home has elevated radon levels is through professional testing.
At QTE, we provide accurate residential radon testing services to help homeowners make informed decisions about their indoor air quality. Whether you’re buying a home, selling a property, or simply want peace of mind, our experienced team delivers reliable results you can trust.
Why Test Your Home for Radon?
Long-term exposure to elevated radon levels is one of the leading causes of lung cancer among non-smokers. Testing is recommended for:
- Homes being bought or sold
- Newly constructed homes
- Existing homes that have never been tested
- Homes with finished basements
- Properties after major renovations or foundation work
- Homeowners concerned about indoor air quality
Because radon levels can vary from one home to another—even between neighboring properties—every home should be tested individually.
Corporate Office
803 W State St, O’Fallon, IL 62269
(618) 632-9900
(618) 632-9922
Regional Office
(By appointment only.)
206 S. Linn Ave. Wentzville, MO 63385
(636) 332-1153
(636) 332-5781
Our Residential Radon Testing Process
QTE follows recognized testing procedures to provide dependable, accurate results.
Initial Consultation
We discuss your property, answer your questions, and determine the appropriate testing method.
Professional Test Placement
Testing equipment is placed in the lowest livable area of the home following established industry guidelines to ensure reliable readings.
Accurate Monitoring
Our testing devices measure radon concentrations over the required testing period while minimizing outside influences.
Detailed Results
Once testing is complete, you’ll receive a clear report explaining your home’s radon levels and whether additional action is recommended.
When Should You Schedule Radon Testing?
Professional radon testing is beneficial anytime, but it is especially important:
- During a real estate transaction
- Before finishing a basement
- After foundation repairs or additions
- Every few years as part of routine home maintenance
- If neighboring homes have reported elevated radon levels
Regular testing helps ensure your home’s indoor environment remains safe over time.
Why Choose QTE?
When you choose QTE for residential radon testing, you receive:
- Experienced environmental testing professionals
- Accurate, dependable testing procedures
- Prompt scheduling and reporting
- Clear explanations of your results
- Trusted service throughout the St. Louis Metro East region
Our goal is to provide homeowners with the information they need to protect their families and make confident decisions about their homes.
Schedule Residential Radon Testing
If you’re concerned about radon exposure or need testing as part of a home purchase or sale, QTE is here to help. Contact our team today to schedule professional residential radon testing and gain confidence in your home’s indoor air quality.
QTE can help you clean up contaminants and bring you into compliance as quickly and cost-effectively as possible.
Quality Testing & Engineering, O'Fallon, IL / St. Louis, MO
Quality Testing & Engineering, with construction testing and engineering offices in O'Fallon, Illinois and Wentzville, Mo, serves the St Louis, Missouri metropolitan area as well as areas of Southern Illinois including O'Fallon, Illinois, Edwardsville, Illinois, Alton Illinois, Belleville, Illinois, Troy, Illinois, Columbia, Illinois, Scott Air Force Base, Illinois and other areas. We provide construction testing, environmental consulting and testing, geotechnical exploration, construction materials testing and other environmental services to the St Louis area, including Wentzville, Missouri, O'Fallon Missouri, St Louis County as well as all areas of Southern Illinois.
Quality Testing and Engineering products range in size from residential homes to Industrial/Refineries, heavy industrial projects such as power plants, refineries and factories. QTE works in commercial, educational, institutional, industrial, recreational, refinery, transportation and warehousing projects.