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Reply to "New HVAC increased radon levels?"
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[quote=Anonymous][quote=Anonymous]The return air ducts leak or are likely not properly sealed. This negative pressure draws air from the soil beneath the foundation, which may contain high concentrations of radon gas in your area, into the home. The continuous cycling of the heat pump compared to a regular furnace, can also alter the home's "stack effect" and infiltration patterns, which are known to influence radon entry.[/quote] NP. Above at least sounds plausible. [/quote]
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