Radon Retesting vs. Continuous Radon Monitoring: What’s Best for a Healthy Home?

Radon Testing Starts the Story - Continuous Radon Monitoring Protects the Future

Think of radon like the weather inside your home: it shifts with storms, temperature swings, and changes in ventilation. Radon levels naturally fluctuate due to:

• Seasonal patterns (often higher in colder months)
  

• Severe weather (pressure shifts or heavy rain can push levels up)
  

• Home upgrades (new HVAC installation, insulation, windows, or basement finishes)
  

Because of these fluctuations, a single test only gives you a snapshot. Radon retesting helps you keep your long-term exposure in check—especially important for families with children and pets who spend lots of time at home. That’s why radon retesting matters, even if you’ve already tested once.

What’s “Covered” with Continuous Radon Monitoring

While radon retesting is necessary, continuous monitoring with a Digital Radon Monitor makes the process easier, faster, and far more insightful.

Always Watching

No reminders, no mail-in kits. A digital radon monitor, like Ecosense, runs quietly 24/7—your “air safety bodyguard”—and keeps you informed without extra effort.

Immediate Confirmation After a Fix

If a mitigation system is installed because your test was 4.0 pCi/L or higher, you don’t need to wait for lab results. A monitor shows readings dropping in real time and verifies system performance every day.

No Guessing During Home Changes

Renovating a basement, upgrading your furnace, or weatherizing your home? Continuous monitoring shows exactly how those changes affect radon, so you can act quickly if levels creep up.

Built-In Retesting—Without the Hassle

Experts recommend radon retesting periodically. With a digital radon monitor, that retest happens automatically—all the time.

Radon Retesting vs. Continuous Radon Monitoring: Side-by-Side

Bottom line: Retesting is essential. Continuous radon monitoring covers it and makes the whole process easier.

When to Retest (or Rely on Continuous Radon Monitoring)

If your radon test result is at 4.0 pCi/L or higher, your levels meet or exceed the EPA action level—and that means it’s time to act. Most homeowners at this stage hire a certified radon professional to install a mitigation system.

Once the system is in place, it’s important to verify that it worked. You can:

• Run a short-term test (24 hours to 30 days after installation), or

• Use your digital radon monitor to see results drop in real time and confirm that levels remain low.

For ongoing assurance, the EPA recommends radon retesting every 2 years. With a continuous digital radon monitor, however, that retest happens automatically—giving you instant feedback and long-term confidence that your mitigation system continues to protect your home.

• At every real estate transaction (buying or selling)

• After installing or modifying a mitigation system

• After significant home changes, such as:
  
  

• Weatherization, insulation upgrades, or new windows/doors

• HVAC modifications (new furnace, air handler, or ventilation changes)

• Basement finishing or new ground-contact spaces being occupied

• Sumps, drain tiles, or groundwater control changes
  
  

• After events that may open new pathways from soil, including major cracks from settling, earthquakes, blasting, or sinkhole formation nearby
  
  

And even without major changes, plan to retest every 5 years in any home, or every 2 years if you’ve already mitigated.

If you use a digital radon monitor, you gain the same protection without having to remember when to retest. Continuous monitoring covers every situation automatically—whether confirming your mitigation system, tracking seasonal trends, or responding to sudden changes in your home.