Radon Gas Levels in Ireland: Health Risks and Ventilation Solutions
What Is Radon Gas?
Radon gas is a naturally occurring, invisible, and odourless radioactive gas that forms from the decay of uranium in soil, rock, and groundwater. It can enter homes through cracks and gaps in floors, foundations, and walls — especially where a house is in direct contact with the ground.
Many Irish homes are located in high-radon areas, making radon exposure a serious health concern. Without proper ventilation systems, radon levels can build up indoors to dangerous concentrations.
You can check your area on the EPA Radon Map of Ireland to see if your home is in a high-risk zone.
Why Is Radon Dangerous?
Radon is the second leading cause of lung cancer after smoking. Long-term exposure to high radon levels in Ireland can significantly increase the risk of developing lung cancer — even for non-smokers. According to the Environmental Protection Agency (EPA), one in five homes in certain parts of Ireland may have radon concentrations above the recommended safety limit.
How to Protect Your Home from High Radon Levels in Ireland
While radon can’t be completely avoided outdoors, indoor accumulation can be managed effectively. Mechanical Ventilation with Heat Recovery (MVHR) and Demand-Controlled Ventilation (DCV) systems can help maintain healthy air quality and reduce radon buildup.
Continuous Air Exchange
MVHR systems ensure a steady flow of fresh outdoor air while removing stale indoor air, diluting any radon that may have accumulated.
Balanced Air Pressure
MVHR and DCV systems maintain neutral air pressure, helping prevent the negative pressure effect that can draw radon gas from the ground into your home.
Reduced Radon Concentration
Although MVHR systems don’t directly filter radon, continuous air movement prevents gas buildup and supports better overall air quality.
⚠️ Note: MVHR is a supportive solution, not a substitute for proper radon mitigation. In high-risk areas, additional measures such as radon sumps, radon barriers, or sub-floor ventilation systems may be necessary. You can learn more about these solutions at Radon.ie
Practical Steps to Lower Radon Levels
- Test your home using an EPA-approved radon test kit.
- Seal visible cracks in floors, foundations, and walls to limit radon entry.
- Install a radon sump or barrier if test results show high concentrations.
- Improve ventilation using an MVHR or DCV system to dilute and remove radon gas.
If you’re unsure about your home’s radon exposure, visit epa.ie or radon.ie for testing and mitigation advice.
Need Help Improving Indoor Air Quality?
If you’re concerned about radon or poor ventilation, Eco Vent Ireland can help. Our team designs and installs MVHR systems that improve air quality, prevent condensation, and help reduce radon exposure.
👉 Contact us for professional advice and a free consultation on your home ventilation needs.
