Radon is one of the most misunderstood health risks affecting homes today. Because it’s a colorless, odorless gas and rarely discussed outside of real estate transactions, many homeowners assume it either doesn’t apply to them or isn’t worth worrying about.

In reality, radon can affect homes in every region and under many different building conditions. Understanding a few common radon myths can help homeowners make more informed decisions about testing and mitigation.

Myth #1: Radon Isn’t Really a Problem in My Area

Some parts of the United States are known to have higher radon potential than others, but elevated radon levels have been found in homes in every state. Many people rely on regional radon maps to estimate their risk, but those maps were created using limited data and were intended only as general guidance.
Radon levels depend on several factors specific to each property, including:

  • Local soil composition and geology
  • Foundation type and construction methods
  • Airflow and ventilation patterns inside the home

Because of these variables, two homes on the same street can produce very different radon readings. The only reliable way to determine radon levels in a home is through proper testing.

Myth #2: Radon Is Just a Scam to Get Money Out of Homeowners

Some homeowners dismiss radon concerns because they assume testing and mitigation are exaggerated or unnecessary. In reality, radon exposure has been studied for decades by major public health organizations.

Agencies that recognize radon as a serious health concern include:

These organizations classify radon as a known human carcinogen and identify it as the leading cause of lung cancer among non‑smokers. While scientific research always evolves, the overall consensus across decades of study is clear: prolonged exposure to elevated radon levels increases lung cancer risk.

Myth #3: Radon Is Only a Problem in Older Homes

It’s common to assume radon issues only occur in aging houses with outdated construction. Unfortunately, radon entry has far more to do with the soil beneath a home and how air moves through the structure than the home’s age. Newly constructed homes can (and often do) show radon test results with elevated radon levels.

Some reasons radon can affect newer homes include:

  • Radon‑resistant new construction is not required in many areas
  • Builders may not include mitigation systems unless specifically requested
  • Tightly sealed modern construction can sometimes trap soil gases more efficiently

For these reasons, both new and older homes should be tested to determine whether radon is present.

Myth #4: If My Neighbor’s Home Tested Low for Radon, Mine Must Be Safe

Radon levels can vary dramatically between nearby homes—even homes built next door to each other.

This variation occurs because radon levels depend on small differences in:

  • Soil conditions beneath the structure
  • Foundation cracks or openings
  • Sump pits or plumbing penetrations
  • HVAC airflow and pressure inside the home

A neighbor’s test result does not guarantee another home nearby will produce similar results. Each property should be tested individually to determine its radon levels.

Myth #5: I Don’t Have a Basement, So Radon Isn’t a Concern

Basements are commonly associated with radon testing because they are often the lowest livable level of a home. However, radon is not limited to basement structures.

Radon enters homes through contact with soil beneath the foundation, which means it can affect:

  • Basement homes
  • Slab‑on‑grade homes
  • Homes built over crawlspaces

Common entry points for radon include cracks in concrete slabs, gaps around plumbing penetrations, construction joints, and openings around sump pits or drains. Because radon can enter through any structure that contacts soil, testing is recommended regardless of foundation type.

Myth #6: Radon Mitigation Systems Require Constant, Expensive Maintenance

Many homeowners assume radon mitigation systems require frequent servicing or costly upkeep. In reality, most systems are designed to operate continuously with minimal maintenance.

A typical radon mitigation system works by drawing soil gases from beneath the foundation and venting them safely above the roofline, preventing radon from entering the living space.

Maintenance is generally limited to:

  • Periodic radon testing to confirm system performance
  • Occasional fan replacement after several years of operation

Operating costs are typically low, and systems are designed to run reliably for long periods.

Myth #7: My Radon Levels Tested Low, So I Have Nothing to Worry About

If a radon test shows levels below the EPA’s action threshold of 4.0 pCi/L, the immediate health risk is significantly lower than in homes with higher concentrations. However, that does not mean radon exposure carries zero risk.

Health agencies note that:

  • There is no completely “safe” level of radon exposure
  • Risk increases gradually as exposure levels rise over time
  • Smokers face a much higher risk from radon exposure than non‑smokers

Because radon levels can fluctuate over time, periodic testing can help ensure conditions inside the home remain within acceptable ranges.

Is Radon Testing Necessary? The Facts Are Clear

Radon is widely misunderstood, but the facts are straightforward: levels vary from home to home, testing provides the answers, and mitigation is often a manageable solution if elevated levels are found. Clearing up these common myths helps homeowners approach radon testing and mitigation with better information and fewer assumptions.

Southwest Radon Eliminators has helped hundreds of homeowners throughout the Southwest test for and manage the radon levels in their homes. If you’re worried about the potential of radon intrusion, contact us today!