How to Choose an Air Conditioner for Your Home
Choosing the right air conditioner for your Australian home can be confusing with so many types, sizes, and brands available. This guide explains everything you need to know to make the right decision.
Types of Air Conditioners
Split System Air Conditioners
The most popular choice for Australian homes. A split system consists of an indoor unit (mounted on the wall) and an outdoor unit (compressor). They're energy efficient, quiet, and can heat as well as cool. Ideal for bedrooms, living rooms, and open-plan areas.
Multi-Split Systems
Like a split system but with multiple indoor units connected to one outdoor unit. Good for cooling multiple rooms while only needing one outdoor unit. More expensive to install but neater than multiple separate systems.
Ducted Air Conditioning
A whole-home system that uses ducts to deliver conditioned air to every room. More expensive to install but provides whole-home comfort. Can be zoned to heat/cool only the rooms you're using. Best for larger homes where you want seamless climate control throughout.
Window/Wall Units
Self-contained units that fit in a window or through a wall. Cheaper to buy and install than split systems, but noisier and less efficient. Good for renters who can't install a split system.
Portable Air Conditioners
Free-standing units that can be moved from room to room. No installation needed. Less efficient than fixed systems and require a window or vent for the exhaust hose. Good for temporary situations or supplementary cooling.
Sizing: How Many kW Do You Need?
Choosing the right capacity is critical. Too small and your system will struggle; too large and it will cycle on and off, wasting energy and creating humidity problems.
As a rough guide for split systems:
- Small room (up to 20m²): 2.5kW
- Medium room (20-40m²): 3.5kW
- Large room (40-60m²): 5-6kW
- Open-plan area (60-80m²): 7-8kW
- Large open plan (80m²+): 9kW+
These figures assume average ceiling height and insulation. High ceilings, poor insulation, or extreme climates require a larger unit. A qualified installer can calculate the precise requirement for your room.
Key Features to Look For
- Inverter technology: Adjusts the compressor speed for greater efficiency. All quality modern units have this.
- Energy star rating: Higher stars = lower running costs. Look for 5+ stars for cooling and heating.
- WiFi connectivity: Control your aircon from your phone. Useful for pre-cooling or heating your home before you arrive.
- Sleep mode: Gradually adjusts temperature overnight for comfort and efficiency.
- Timer: Set the unit to turn on or off at specific times.
- Reverse cycle (heat pump): Can both heat and cool. Much more efficient for heating than a fan heater. Essential for year-round comfort in Australian climates.
Best Air Conditioner Brands in Australia
Mitsubishi Electric: Renowned for reliability and quiet operation. Among the best for longevity.
Daikin: Japanese quality, excellent efficiency ratings, innovative features.
Panasonic: Good value with strong energy efficiency.
LG: Good features and value. Dual Inverter technology is very efficient.
Samsung: Modern features including good app control and smart home integration.
Fujitsu: Popular in commercial and residential settings, good reliability.
Kelvinator/Electrolux: Budget-friendly options suited to smaller rooms.
Find Your Air Conditioner at Oceania Appliances
Oceania Appliances stocks a range of certified refurbished and new air conditioners from leading brands. Free delivery across Sydney, Central Coast, Newcastle, and surrounding NSW regions. 3-month warranty included. Visit oceaniaappliances.com.au to browse our range.