When a home requires 120 CFM of bathroom exhaust and needs 44 CFM of unbalanced pressurization, the total required supply is 164 CFM, which exceeds the 150 CFM total capacity of the reference ERV, making it impossible to achieve the desired pressurization without purchasing a larger unit like a 180 or 200 CFM ERV.
causalpending
Speaker
Unidentified Speaker — Home Pressure Effects of Unbalanced ERV, Ventilating Dehumi… [7nhXP3v5Zy0]Evidence Quote
“if I am gonna have my exhaust be 120 then that means that I'd have to have my Supply be 164 which I can't do with that Erv that we were just looking at I'm now going to have to shop for an even bigger one [4:11]”
Source
Home Pressure Effects of Unbalanced ERV, Ventilating Dehumidifier, or Supply-Only Ventilation— Home PerformanceCreated: 8/13/2026, 3:25:18 AM
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