Honeybee HVAC choice trouble

Hello everyone,

I’m trying to validate a 3-storey residential model with a hybrid ventilation system (mech ventilation during winter and natural ventilation during summer). Adding to this, there is an Air-Water heat pump in place.
I started off modelling with the HeatCool HVAC system but I believe that ends with inaccuracies as it disregards the ventilation (I’m not sure about this). I tried using the SHW heat pump water heater, but this presented itself with multiple errors due to the use of airwalls between zones.
Can someone help me towards the right way to go about with the HVAC?
I would like to stay with Honeybee as my system does not have to be precise. I just need the addition of a heat pump to reduce my Energy Use.

Cheers,
Adarsh