High radon levels can be concerning, especially after investing in a mitigation system. Several factors could contribute to persistent radon issues, such as the system's installation quality, the home's ventilation, or even seasonal changes affecting radon entry. It's essential to understand how radon enters your home and the effectiveness of your current system. Regular testing and maintenance are crucial for ensuring safety. Curious about how to troubleshoot your radon system or improve its efficiency? Ask Improvi.ai for personalized guidance.