The discount range runs from 3 to 9 kW, and the right size is decided by the room, not by the biggest figure. As a starting point, a medium room of roughly 20 to 35 square metres sits around 3.5 kW, a large living area of 35 to 60 square metres around 5 kW, and an open-plan space over 60 square metres 7 kW or more; a bedroom or study that had a small space heater usually sits at the bottom of the 3 to 9 kW band. Ceiling height, glazing, insulation and which way the room faces move the answer up or down. Our split system sizing guide explains the maths, and the office does it for you on the call.
Where it goes. The split does not have to sit where the furnace was. It needs an external wall or a short pipe run to one, a high position that throws air across the room, and an outdoor unit spot that does not annoy you or the neighbours. Every unit we install for the discount is on the approved product list with at least a five-year manufacturer warranty, and every one is reverse cycle, so the room that was only ever heated is now cooled as well. That is the part people notice first in February.
The install itself is the same job as any wall split: licensed electricians and licensed refrigeration technicians, a dedicated circuit, pressure test, vacuum and commissioning. Our split system installation page covers the brands, the positioning and what the day looks like.