Big on comfort, small on bills: finding your ideal split system air conditioning size

Selecting the right split system air conditioner isn’t just about getting cool or warm air—it’s about finding the perfect fit for your room’s specific needs so you can be big on comfort and small on bills. An appropriately sized unit saves energy, maintains comfort, and keeps your bills down. Here’s our split system air conditioning size guide to determine the right capacity, factoring in room size, insulation, and climate.

Match capacity with room size

The capacity of your split system, measured in kilowatts (kW), is a major factor in achieving the right indoor climate. For small bedrooms or studies (up to 20 square metres), a 2.5kW system usually does the job. For medium-sized rooms, like a home office or living room (20-40 square metres), a 3.5-5kW system is ideal. Larger areas, like open plan living or houses looking for a ducted alternative will require a 7.2kW system.

Quick Guide:

• Small rooms (up to 20 m²): 2.5kW
• Medium rooms (20-40 m²): 3.5kW
• Large rooms (40+ m²): 7.2kW

Energy efficiency and your budget

Choosing a split system with a good energy efficiency rating will help keep running costs down. Emerald’s split systems offer advanced energy-saving technology, reducing power usage without compromising performance. By using this split system air conditioning size guide, you’ll save in the long run, both financially and environmentally.

Consider insulation and room features

A well-insulated room requires less energy to heat or cool. Insulation in walls, floors, and ceilings minimises heat exchange, helping the air conditioner work more efficiently. Other factors, like the presence of large windows or doors, can also affect performance. For example, rooms with extensive glass that are exposed to direct sunlight may need a larger unit than their size alone would suggest. For these scenarios, opting for a unit with a slightly higher kW rating can ensure consistent comfort – speak to an accredited installer for information tailored to your needs. 

Are government rebates available?

Yes they are! Depending on your location, significant rebates are available for installing high-efficiency split system air conditioning, making them extremely affordable. These rebates are so good, they cover a substantial part of the installation and unit cost. To qualify, the installation must meet government standards, and the process should be handled by accredited installers, ensuring you get the best support available.

Electrifying your home with a split system air conditioning offers real benefits—lower costs, improved air quality, and reduced emissions. Check your eligibility now for a significantly subsidised air conditioning system – just in time for summer!