When to Schedule a Midwinter Radon System Inspection

February 5, 2026      

Winter is the time of year when homeowners rely most on the comfort and safety of their indoor environments — but it’s also when radon levels are at their highest. Because homes are sealed tightly against the cold, less outdoor air circulates through basements and crawl spaces, allowing radon gas to accumulate more easily. At Radon Guys, we recommend scheduling a midwinter radon system inspection to ensure your mitigation system is working efficiently when it matters most.

Why Winter Is a Critical Time for Radon Checks

Radon is a naturally occurring gas that enters homes through foundation cracks, floor drains, and other openings in contact with the soil. During winter, the difference in temperature between indoor and outdoor air increases the “stack effect” — a pressure imbalance that draws soil gases, including radon, into your home.

Since families tend to keep windows closed and heating systems running continuously, radon concentrations can rise quickly. Even homes with active radon mitigation systems can experience performance fluctuations due to frozen ground, snow buildup, or fan malfunctions. A midwinter inspection ensures your system is keeping levels below the EPA-recommended limit of 4.0 picocuries per liter (pCi/L).

What a Midwinter Inspection Includes

A professional inspection by Radon Guys goes beyond a quick visual check. Our certified technicians perform a comprehensive system evaluation, including:

• Testing radon levels to confirm your mitigation system is maintaining safe indoor air quality
• Checking the fan’s operation and airflow to ensure proper suction from beneath the foundation
• Examining vent pipes for blockages caused by snow, ice, or debris
• Inspecting sump pit seals and foundation penetrations for potential air leaks
• Verifying electrical connections and pressure differentials to guarantee optimal system performance

By catching minor issues early, we can prevent costly system failures and keep your home protected through the coldest months.

How Often Should You Schedule an Inspection?

For most homes, we recommend a comprehensive radon system inspection at least once a year, ideally during the heating season when radon levels tend to peak. If you’ve noticed changes in indoor air quality, unusual fan noise, or higher-than-expected radon readings, a midwinter inspection should be scheduled immediately.

Homes with older mitigation systems (more than five years old) or those in high-radon regions benefit especially from midseason checks. Data from state environmental agencies show that radon levels can spike by 20–50% during winter, even in homes with active systems, making regular inspections essential for safety and peace of mind.

Protect Your Home and Family This Winter

A functioning radon mitigation system is your first line of defense against invisible health risks. By scheduling a midwinter inspection with Radon Guys, you’ll ensure your system continues working efficiently when radon exposure risks are at their highest.

Our team of certified professionals uses advanced diagnostic tools and years of expertise to maintain the performance of your system all year long. If it’s been more than a year since your last inspection — or if you’re concerned about rising radon levels — now is the time to take action.

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