In newly constructed airtight homes, outdoor air cannot simply be introduced without mechanical balance (ERV/HRV); passive infiltration cannot meet ventilation needs in tight construction.
causalpending
Speaker
HostEvidence Quote
“in homes that are new and the kind of people that I'm talking to generally are going to build very airtight you can't just bring in a bunch of fresh air you need to have a balance system”
Source
Home Ventilation Advice from HVAC Researcher Jeffrey Siegel: How Many CFM is Ideal?— Home PerformanceCreated: 8/13/2026, 4:55:15 AM
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