Radon Mitigation System
A sub-slab depressurization system with a fan and vent stack that exhausts radioactive radon gas from beneath a foundation.
Quick answer
Radon Mitigation System: A sub-slab depressurization system with a fan and vent stack that exhausts radioactive radon gas from beneath a foundation. Typical cost: $800–$2,500 installed; testing $15–$150..
Why it matters
Radon is the #2 cause of lung cancer in the US; mitigation is $800–$2,500 and required disclosure on sale in many states.
Typical cost
$800–$2,500 installed; testing $15–$150.
Pros
- • Cuts indoor radon to safe levels
- • One-time install with low ongoing cost
Cons
- • Visible exterior vent stack
- • Fan runs continuously
Common uses
- • Basements and slabs in radon-prone regions (most of US)
Alternatives
Heat-recovery ventilation (partial reduction)
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Frequently asked questions
- How do I know if I have radon?
- Test — short-term kits cost $15; readings ≥4 pCi/L trigger EPA action.
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