Radon Fans
Fans: The fans move less air than many bathroom fans (typically less than 60 CFM). Continuous operation is required yet inexpensive (similar to a 40-80 watt light bulb).
Choices: It is a balance between vacuum pressure needed (based upon sub-slab conditions) and air volume needed (based upon cavity sizes and tightness.Experience in choosing the best fan is important. Bigger is not better yet too small will result in compromised effectiveness in cold weather. Over sized fans can cause noise, excess energy loss and problems with other building systems such as combustion appliances. Light duty fans require situations where all gaps and openings to soil can be sealed.
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