Advanced Radon Mitigation in Berkley

A fan that is running but failing to reduce radon levels suggests the system is not generating adequate negative pressure beneath the foundation, which can have several causes. The fan may have lost suction capacity due to motor wear, or it may be undersized for your specific soil conditions and foundation design. New foundation cracks, open sump pits, or changes to the home's structure can also create pathways for radon to bypass the system entirely. A certified contractor should perform a pressure diagnostic and sub-slab evaluation to identify the specific cause before recommending a solution.

Not necessarily. While fan failure is a common cause of lost suction, there are several other possibilities that should be investigated before assuming the fan needs replacement. A disconnected or cracked pipe joint can allow air to leak in and equalize pressure, giving the appearance of fan failure even when the motor is running. A clogged suction pit beneath the slab, a newly opened sump pit, or a large foundation crack can also reduce system pressure significantly.

Several warning signs indicate your radon system may need repair, including rising radon test results, a non-functioning fan, unusual noises coming from the fan, or visible pipe damage. Many systems include a visual warning indicator, such as a U-tube manometer, which shows whether the system is maintaining proper suction. If the fluid levels in the manometer are equal on both sides, the system is likely not functioning correctly. Any time your radon levels test above 4 pCi/L with the system running, a professional diagnostic inspection is strongly recommended.