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Reply to "New HVAC increased radon levels?"
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[quote=Anonymous]Op here, thank you again for all these responses. We do have a super tight row house, no current radon remediation system (we never needed one before) and our HVAC is a Carrier Infinity Greenspeed that the HVAC contractor manually reset to run much higher than it was bc we wanted more airflow (10000-12000? I am not sure I remember the numbers correctly.) But I believe the unit is strong - they sized a larger basement return register when they installed it. The filter is an Aprilaire 20x25” whole home filter. As for a crack in the basement, I haven’t seen any. We are in NW DC and I would love any recommendations. It seems to me that going from a 1-4 to a 28-32 we have to revisit the airflow of the new HVAC system, as well as perform radon remediation. Thanks in advance[/quote]
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