DIY ventilation heat exchanger

[meelis11]

Originally Posted by scion19801

Step One – Use the above Air Changes per Hour Table to identify the required air changes needed for the use of the room. Let’s say it’s a conference room requiring 10 air changes per hour.

Step Two - Calculate the volume of the room (L’xW’xH’).

Step Three - Multiply the volume of the room by the required room air changes.

Step Four Divide the answer by 60 minutes per Hour to find the required room CFM

i get 192 cfm. that seems aweful high.
another one i found said i needed 12 cfm. so i'm kinda stuck on how big to size my unit.

Why you would select it as conference room if it is your house? I home you dont need more than one air change per hour - and that is boostmode. Normal everyday mode is 0.5-0.3 airchanges per hour.