Excessive radon in a house can be fixed in all these ways except which?

Excessive radon in a house can be fixed in all these ways except which?

• A. Seal cracks in foundation
• B. Increase ventilation
• C. Install a radon mitigation system
• D. Treat it with a mechanical conditioner

Answer: (D)

Radon mitigation focuses on stopping radon from entering or removing/diluting it from indoor air. Sealing cracks in the foundation reduces the pathways radon uses to get inside. Increasing ventilation dilutes the indoor concentration by exchanging indoor air with outdoor air. Installing a radon mitigation system actively pulls radon from beneath the foundation and vents it outside, directly reducing the source. Treating it with a mechanical conditioner, like a typical air conditioner, doesn’t remove or dilute radon and doesn’t address entry points, so it won’t fix the problem.

Radon mitigation focuses on stopping radon from entering or removing/diluting it from indoor air. Sealing cracks in the foundation reduces the pathways radon uses to get inside. Increasing ventilation dilutes the indoor concentration by exchanging indoor air with outdoor air. Installing a radon mitigation system actively pulls radon from beneath the foundation and vents it outside, directly reducing the source. Treating it with a mechanical conditioner, like a typical air conditioner, doesn’t remove or dilute radon and doesn’t address entry points, so it won’t fix the problem.