The Benefits of Long-Term Radon Testing

Posted in Radon Testing, on July 25, 2025

Radon gas is the most dangerous home pollutant you’ve never seen, smelled, heard, or sensed. It’s only detectable through professional air quality testing in Toronto, and it affects an estimated 7% of buildings in the city. At SafeAir, we believe every homeowner should have radon testing to determine the risk this invisible danger may pose to you and your family. Long-term radon testing is the only safe and accurate way to understand if your home is one of the 7%. While there are several different testing protocols, SafeAir only performs long-term radon testing — and here’s why. 

What is Long-Term Radon Testing?

A long-term radon test generally lasts 90+ days, or three or more months, as opposed to short-term testing that lasts only a handful of weeks. Duration is significant in radon testing because levels are affected by external factors like weather, temperature, groundwater, and more. Continuous radon monitoring for several months ensures accuracy and evens out any changes caused by these external factors. 

Accurate Representation of Radon Fluctuations

Short-term tests capture a quick snapshot of your indoor air environment. This can be helpful, but for true radon safety, you want to ensure that naturally occurring spikes or troughs are evened out, and the only way to account for these fluctuations is time. Radon levels can change daily, seasonally, because of storms, or due to construction or changes to your home. Your home’s average radon level over time is the only important metric since false positives can lead to unnecessary mitigation work, and inaccurate “safe” readings may allow risks to go unsolved. 

Better For Real Estate and Health Decisions

If you’re thinking about buying or selling, understanding a property’s radon risk ensures you’re honest, upfront, and aware of the risks. Long-term radon testing provides everyone with confidence and assurance. The effects of exposure to radon gas take many years to appear, and when they do, not much can be done to turn back the clock. When you’re looking to settle down and create a home to nurture your family, that home needs to be a safe choice, and radon testing will help you determine it.

Supports Effective Mitigation Planning

Long-term radon testing also helps support mitigation planning if your home tests above the guideline of 200 becquerels per cubic metre (Bq/m³). Again, this is where accurate testing is critical because homes with very high radon levels will need more extensive mitigation systems to bring down amounts and create a safe environment. Why add this extra cost if smaller-scale and less invasive options like foundation sealing are all you need? 

Peace of Mind and Proactive Prevention

At SafeAir, our focus is on helping you create healthy and safe indoor environments, which starts with proactive prevention. Air quality testing in Toronto can help you establish a baseline for common problems like particulates or allergens, as well as take a deep dive into complex issues like radon gas. Either way, the value of knowing your long-term exposure risk is hard to quantify, and it’s often minor adjustments that have the most significant effects. If indoor air quality or radon testing is something you’d like to learn more about, contact SafeAir to speak to a technician or inquire about booking your test. 

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