100 cfm of fresh air at 65^F dew points is couple lbs. per hour and the moisture from the occupants may be couple lbs. of moisture per hour. During wet cool weather, you need to remove 3-4 lbs. of moisture per hour. The variable a/cs do not run enough to maintain <50%RH.
I have a foamed house, now for seven years. Extreme low electric bills. Now, I want to bring in a positive fresh air to a zoned bedroom. The 150 cfm that the Ultra Aire 70 brings in is not much. Would a larger unit like the Ultra-Aire HT155h bring in enough CFM to a bedroom that I could sense airflow when standing in the doorway? I want to positive pressurize the bedroom enough to feel it, however slightly. Yet, is that realistic?
Thank you --Roger