Our project consists of (5 townhouse + multipurpose room). This is considered as one building.

townhouses are 3-5 floors and each is served by 1 AHU = total 5 AHUs
The multipurpose room has its own AHU.
The townhouses are not typical.

Is it sufficient to take one sample for each townhouse + 1 for the multipurpose room = Total 6.

following the guidelines, each floor of each town house must be sample, which means 4-5 samples must be taken per townhouse since the AHU is serving multiple floors. ??

Please advise