For most 3-bedroom homes there are two honest answers: a well-sized split system for the main living area plus smaller units in the bedrooms, or one zoned ducted system conditioning the whole footprint.
Sizing comes down to more than floor area - ceiling height, insulation, orientation and window size all shift the kilowatts you need. An undersized unit runs flat out and never quite gets there; an oversized one short-cycles and leaves the air clammy.
That sizing call is what our free quote is for. We measure, we ask how you live in the house, then we recommend from brands we trust - Daikin, Fujitsu, Actron Air, Mitsubishi Electric, Panasonic or Teco.