Split System Air Conditioners

What is a split system air conditioner?

A split system air conditioner consists of two main components: an indoor wall-mounted unit that delivers conditioned air into the room and an outdoor compressor unit that handles the heat exchange process. The two units are connected by refrigerant pipes, electrical cables and a condensate drain line. Split system aircons are Australia's most popular home cooling and heating solution, offering powerful performance, quiet operation and excellent energy efficiency.

Benefits of a split system aircon

• Inverter technology – Variable-speed compressor maintains your set temperature without constant cycling, saving energy
• Reverse cycle heating and cooling – One unit handles year-round climate control
• Quiet indoor operation – Indoor units typically run at 20–30dB, barely audible in most rooms
• High energy efficiency – Modern split systems carry strong energy star ratings, reducing running costs
• Smart control – Many models include Wi-Fi connectivity for smartphone control

Split system vs. ducted air conditioning

Split systems cool individual rooms or zones and are more affordable to install and run than whole-home ducted systems. They're the preferred choice for most Australian households wanting powerful, energy-efficient climate control for bedrooms, living rooms and open-plan areas. Ducted systems suit larger homes where whole-home cooling is required and the upfront investment is justified.

What size split system aircon do I need?

Aircon split system capacity is measured in kilowatts (kW). For Australian homes, a general sizing guide is: small bedroom (up to 20m²) needs 2.0–2.5kW; a medium room (20–40m²) requires 2.5–5.0kW; and a large open-plan area (40–60m²) needs 5.0–7.0kW. Ceiling height, insulation and sun exposure also affect the right capacity.

Box aircon and wall-mounted aircon options

In addition to standard split systems, Kogan.com stocks box aircon units and wall-mounted aircon options that offer similar performance in different form factors. These are particularly popular for rooms where a traditional split system installation isn't practical.

Shop split system aircons at Kogan.com

Browse Kogan.com's extensive range of split system air conditioners from leading brands at competitive prices. With fast delivery across Australia and installation support available, getting your new split system set up is simple.