It seems BEopt (v2.8) has an egregious bug in the reported costs for mini-splits in multifamily buildings. Unlike other measures such as water heaters or mechanical ventilation in which the fixed materials costs are multiplied by the number of housing units (like one might expect), the MSHP fixed cost is not scaled by the number of apartments in BEopt's calculated cost.
Does this only affect the options panel of the results screen, or does it affect the internals as well e.g; the costs used in optimization, or to determine AERC?
This can be accounted for with custom measures where one pre-scales this cost, but it's not obvious one would need to, not should it be necessary.