Can You Be in the House During a Radon Test? A Definitive Guide

Yes, you can typically be in the house during a radon test, especially if it’s a short-term test. However, certain precautions need to be taken to ensure the test’s accuracy and validity, avoiding any actions that could artificially lower or raise the radon levels detected.

Understanding Radon Testing and Its Importance

Radon is a colorless, odorless, and tasteless radioactive gas that occurs naturally from the decay of uranium in soil, rock, and water. It seeps into homes through cracks in foundations, walls, and floors. Prolonged exposure to high levels of radon is the second leading cause of lung cancer, after smoking. Therefore, testing your home for radon is crucial for protecting your family’s health. Radon testing is generally recommended every two years, especially if you’ve made significant renovations to your home.

The Two Types of Radon Tests: Short-Term and Long-Term

Radon tests primarily fall into two categories: short-term and long-term. Short-term tests typically last between two and seven days and are used to get a quick indication of radon levels. Long-term tests, on the other hand, measure radon levels over a period of 90 days or more, providing a more accurate reflection of the average radon concentration in your home throughout the year.

The choice between short-term and long-term testing often depends on urgency and desired accuracy. If you’re buying or selling a home, a short-term test might be necessary. For a more comprehensive understanding of your home’s radon levels, a long-term test is often preferred.

Staying Inside During a Radon Test: Rules and Recommendations

While occupancy is allowed during a radon test, certain conditions must be met to ensure the results are reliable.

• Closed-House Conditions: This is the most important requirement. You need to maintain “closed-house conditions” for a specified period before and during the test. This typically means keeping all exterior doors and windows closed, except for normal entry and exit. Don’t open windows to “air out” the house, as this will skew the results.

• HVAC System Operation: Operate your heating and cooling systems normally during the test. Running air conditioning, especially during warmer months, is fine. Avoid using whole-house fans or opening windows to cool the house.

• Minimize Disruptions: Try to minimize activities that can affect airflow, such as frequent opening and closing of doors, running exhaust fans (other than for brief periods after showering or cooking), and using fireplaces.

• Communicate with Your Tester: Discuss any specific concerns or lifestyle habits with the radon testing professional beforehand. They can provide tailored advice based on your situation.

Potential Issues and Avoiding Them

It’s important to understand that failing to adhere to these guidelines can lead to inaccurate results. Artificially lowering radon levels during the test might give you a false sense of security, while artificially raising them could lead to unnecessary remediation costs. Therefore, strict compliance with the testing protocol is paramount.

FAQs About Radon Testing and Occupancy

Here are some frequently asked questions to further clarify the nuances of radon testing and home occupancy:

1. What happens if I accidentally open a window during a short-term radon test?

If you accidentally open a window, it’s best to notify the testing professional immediately. Depending on how long the window was open and when it occurred during the test, the results might be compromised. You may need to restart the test after a 24-hour period of closed-house conditions.

2. Can I use my fireplace during a radon test?

No, using a fireplace during a radon test is generally not recommended. The draft created by the fireplace can affect the airflow within the house and potentially draw radon gas into the living spaces, leading to inaccurate results.

3. How long before the test do I need to maintain closed-house conditions?

Typically, you need to maintain closed-house conditions for at least 12 hours before the start of a short-term radon test. Consult the instructions provided by the testing company or professional for their specific requirements.

4. Can children and pets be in the house during a radon test?

Yes, children and pets can be in the house during a radon test. However, it’s important to ensure they understand and follow the rules regarding closed-house conditions and avoiding disruptions to the testing process.

5. Is it okay to shower and use exhaust fans in the bathroom during the test?

Yes, you can shower and use the bathroom exhaust fan, but try to limit the duration. Prolonged use of exhaust fans can affect air pressure and potentially influence radon levels.

6. Does cooking affect the radon test results?

Generally, normal cooking activities will not significantly affect radon test results, as long as exhaust fans are used sparingly. However, avoid using exhaust fans excessively, especially those that draw air from the entire house.

7. What is the acceptable radon level in a home?

The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels in your home if the average level is 4 picocuries per liter (pCi/L) or higher. Even levels between 2 pCi/L and 4 pCi/L warrant consideration for mitigation.

8. How do I choose a qualified radon testing professional?

Look for a professional certified by the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB). These certifications indicate that the professional has met specific training and competency requirements.

9. How much does a radon test typically cost?

The cost of a radon test can vary depending on the type of test and the location. Short-term tests typically range from $100 to $300, while long-term tests can cost more. Professional testing usually costs more than DIY kits.

10. If my radon test results are high, what are my options for mitigation?

The most common radon mitigation technique is soil suction, which involves installing a vent pipe and fan to draw radon gas from beneath the foundation and vent it safely outside. Other methods include sealing cracks and improving ventilation.

11. How long does radon mitigation typically take?

Radon mitigation systems can usually be installed in one day. However, the complexity of the system and the size of the house can affect the installation time.

12. Will radon levels change over time?

Yes, radon levels can fluctuate over time due to changes in weather, soil conditions, and even the structural integrity of your home. This is why periodic retesting is recommended.

Conclusion

While you can be present in your home during a radon test, understanding and adhering to the specific guidelines are essential for obtaining accurate results. By maintaining closed-house conditions, minimizing disruptions, and following the recommendations of a qualified radon testing professional, you can ensure that your test provides a reliable assessment of the radon levels in your home and take appropriate action to protect your health. Don’t gamble with your family’s safety; test for radon regularly and address any elevated levels promptly.