Hello,

Our project is in Indonesia (Climate Zone 1), which happened have high humidity (70-85%) all year long. Our building design only incorporate natural ventilation and AC (VRF system).

Is it possible with our location condition, a naturally ventilated building, conditioned with AC - VRF system design - flush out can be performed? What strategy can we consider? Should we stick to Option 1 or go with Option 2 (IAQ testing)?

The concerns to Option 2 is that there are no lab that can perform all of those contaminant testing using EPA or ISO method here. How about NIOSH method? Can we be permitted to use this method or get any rulings?