I realize there is no right or wrong answer to this, but I’m curious how people are setting up asset hierarchy on something like an air conditioning unit in a tenant suite. 

Each AC unit has an outdoor condenser and an indoor AHU or mini split head. Often times these two units become de-coupled in age and maintenance when one is replaced and not the other, so I have trouble tracking the whole system as one asset. I also have situations where I have one condenser with 5 or more mini split heads servicing 5 or more individual tenant spaces. 

However, performing something like spring maintenance on them requires simultaneous work to both indoor and outdoor unit typically under one work order. 

Right now I have it all separate, no sub-assets at all. I’m considering changing that to: Tenant Suite # > Outdoor Condenser # > Indoor AHU or Mini split head #

Just curious how others are handling this..