Efficient Brighton Radon Mitigation

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.

Installing an undersized fan is the most common mistake, resulting in insufficient suction to keep radon levels below the EPA's recommended action level of 4 pCi/L. On the other end of the spectrum, an oversized fan can create excessive negative pressure beneath the foundation, potentially causing backdrafting of combustion appliances like furnaces, water heaters, or fireplaces. Backdrafting is a serious safety concern because it can draw combustion gases, including carbon monoxide, into the living space. Always verify system performance with a manometer and conduct a radon test after any fan replacement to confirm safe and effective operation.

Yes, a blocked suction pit or clogged pipe forces the fan motor to work against excessive resistance, generating more heat and mechanical stress than it was designed to handle over the long term. This added strain can significantly shorten the fan's lifespan, leading to premature motor failure. Common causes of blockages include debris entering the suction pit, collapsed gravel beneath the slab, or condensation buildup freezing in cold climates. Whenever a fan is replaced, the contractor should inspect and clear the suction point and pipe to prevent the same issue from recurring with the new fan.