Noise and maintenance is main problem. When you live on top of other people, you like do so without the screaming sound from a fan belt, or a bad pumpe vibrating the building, from your careless neighbor.

If the Strata is the designated from day one with heatpump, then they in my design plassed in technical room/areas where they are sound dampen and can easily be accessed by maintenance workers. With maybe water exchanger for hot water or a pool.

The strata is a legal corporation, the bylaws are binding as they are voted on at the AGM.

We have a no window AC law at our Condo. Reason being:

• 100 units ruuning these would be noisy as hell in a woodframed unit.
• dripping water from these units can infiltrate your wall, or damage structure below.
• walls and windows are common property so it forces strata to maintain damages that aren't part of the Engineering Report , or not accounted for in Strata Fees.

You can use an inside portable unit though.

When we did have the sudden heatwave some people bought the window style anyway, strata recognized it was a health and safety reason and did not issue fines for that year, following years neesed to be proper type.