Hi!

I’m working on a residential building pre-certified and the project has some areas naturally ventilated and others mechanically ventilated.

I’m a little confused by what we should consider as “mechanically ventilated area”. For example, the 'kids room' at the common area (an indoor playground for all kids from the building) has an ar-conditioning system with a heat exchanger. So it’s a mechanically ventilated space and the intake air flow should be the air rate from the air-conditioning device, right? What about the bathrooms and the kitchens with exhaustion systems, they must be considered as mechanically ventilated spaces for this prerequisite? The intake air flow should be the rate from the exhaustion device?

Thanks a lot!