6 of our most popular split system air conditioners in Australia 2026

A split system air conditioner gets its name from its two-part design: an indoor unit (typically wall-mounted) that blows cool or warm air into your room, and an outdoor unit that handles the refrigeration work. Nearly all split systems are reverse cycle, meaning they have both cooling capacity during hot summer days and heating capacity in the winter months, which can save you from doubling up on heaters and fans.

Why choose a split system over other air conditioning options? Compared to ducted systems, they're more cost-effective and easier to install without major home modifications. Unlike portable air conditioners that occupy valuable floor space, split systems are generally wall-mounted (though one model on this list is floor-mounted). And unlike window units that block natural light and views, split systems keep your windows intact while delivering superior performance and quiet operation.

The Fujitsu Lifestyle Next series 2.5kW model features anywAiR Wi-Fi technology II for smartphone control via the myanywAiR Next app. Intelligent features include geofencing that activates the unit as you approach home, personalised scheduling, and AI-driven filter maintenance reminders.

The R32 refrigerant and Apple-Catechin filter enhance indoor air quality, while Climate React automatically adjusts settings based on room temperature thresholds. With its sleek matte finish and energy-saving inverter technology, it’s a good example of aircon innovation. Also available in 3.5kW, 5kW, 6kW, 7.1kW, 8.5kW and 9.5kW models.

The Rinnai TX Series 3.5kW split system is the perfect fit for master bedrooms, home offices, or mid-sized living areas. It packs built-in Wi-Fi connectivity, voice control, and a HEPA air filtration system into a conveniently compact unit.

It also boasts an impressive 4.5-star cooling efficiency rating and is backed by a generous 7-year warranty. If you have a larger open-plan space, there are several larger versions (and one smaller one): choose from 2.5, 5, 6, 7 (see #3 below) 8 and 9kW models.

Sharing many of the same features as its 3.5kW stablemate (see #2 above), the Rinnai TX Series 7.0kW split system is an excellent choice for keeping larger living and open-plan spaces comfortable year-round. It features built-in Wi-Fi and voice control, allowing you to easily manage your home's climate directly from your smartphone or with a simple voice command.

With a built-in HEPA air filtration system to capture dust, 3D airflow for even temperatures, and a durable GoldGuard coating to protect against the elements, it’s a smart and reliable option. It also comes with an impressive 7-year warranty for total peace of mind. Also available in 2.5, 3.5 (see #2 above), 5, 6, 8 and 9kW models.

Like its 2.5kW sibling (model #1), this 3.5kW Fujitsu Lifestyle Next features anywAiR Wi-Fi technology II, geofencing, personalised scheduling, AI filter reminders, and Climate React automation through the myanywAiR Next app. Both models also share the R32 refrigerant, Apple-Catechin filter for improved indoor air quality, and sleek matte design.

This mid-capacity version delivers 40% more cooling power at 3.5kW and 3.7kW heating capacity, making it suitable for using in slightly larger single rooms. The comprehensive smart climate control system and 5-year warranty remain consistent across the Lifestyle Next range. Also available in 2.5kW, 5kW, 6kW, 7.1kW, 8.5kW and 9.5kW models.

Unlike the five wall-mounted models on this list, this Fujitsu floor console offers a slim, elegant alternative for spaces where wall installation isn't feasible. With 4.2kW cooling and 5.2kW heating capacity, it suits medium to large rooms. Advanced All DC technology reduces power consumption, while the Apple-Catechin filter and long-life ion deodorisation filter maintain air quality.

Features include automatic louvre adjustment, Blue Fin heat exchanger for corrosion resistance, V-PAM inverter technology, Economy Mode, Powerful Mode, and Super Quiet operation at 44dB. Multiple timer options (on/off, program, weekly, sleep) and automatic restart after power interruptions provide flexible, reliable climate control. Also available in 2.5kW and 3.5kW models.

Rounding out the T Series range, this 8.0kW Rinnai shares all the features of its 3.5kW and 7.0kW stablemates (#2 and #3), including built-in Wi-Fi control, voice control compatibility, Fresh Function self-cleaning, DRED capability, and inverter technology. Designed for rooms up to 40-54m², this powerful unit delivers 8.0kW cooling and 8.4kW heating capacity - ideal for substantial open plan areas.

The same Turbo Mode, intelligent Sleep Mode, 3D airflow, and timer functions apply, with Rinnai's extended 7-year warranty providing long-term confidence. Remote control via the Rinnai app ensures convenient smartphone operation for this high-capacity reverse cycle air conditioning system. Also available in 2.6kW, 3.5kW, 5.2kW and 7.0kW models.

Appliances Online has a huge selection of air conditioners, from split system to portable and window - from the leading brands listed above as well as Mitsubishi, Samsung, Panasonic, Haier, Toshiba and more. And with our legendary FREE delivery we can usually get orders to 95% of Australians by the next day (Mon-Fri) if they’re in stock.

We even offer paid Same Day Delivery in metro Sydney, Melbourne and Brisbane for in-stock items ordered by 12pm weekdays. Check out our full range of air conditioners, air purification and cooling systems, and if you need a few more tips on choosing the best system for your home, check out our Air Conditioner Buying Guide, call our friendly team 24/7 on 1300 000 500 or message us via the chat icon at the bottom of your screen.