Which of the split system air conditioners is the most economical air conditioner

There are so many split system air conditioners on the market today. Along with the number of gimmicks that people use to sell them to you with there is so much confusion on what system is the most economical. With all the power outages across South Australia and the ever-increasing power prices, there has never been a time to ensure that you are purchasing the most energy efficient air conditioning systems as possible.

The split system air conditioning system is the most economical system which comes down to a range of factors including the size of the room you are looking to heat/cool, where you are located, the level of heating vs. cooling you will require. There are now a range of standard and technically advanced solutions that are offered to the market to switch off, adjust and amend the temperature output of the split system air conditioner depending on the situation – these too should be considered to increase the economical savings of your system.

split system Air ConditionersAn economical split system air conditioning unit by definition is one that is not so much cost effective to purchase initially, but one that provides efficiency in running over time. At the end of the day, the cost savings of purchasing a cheaper unit in the first place are quickly eroded by inefficient machines versus the more expensive, energy-efficient systems.

Thankfully with energy consumption at the tip of everyone’s tongues these days, there is help at hand, with government regulators and departments designed for the sole purpose of allowing you to purchase the right split system air conditioning unit, with the best energy efficiency that you available budget can buy. Remembering that in the end, the more efficient the system, the cheaper it will be in the long run.

With so many ‘what if’ moments when purchasing your split system air conditioning, we will try to provide a guide on what elements contribute to a system being the most or least economical and how these will work in your favour when purchasing an air conditioner.

Size Matters

When you are looking to heat or cool a room to make it most efficient as possible, you need to ensure that the size of your system matches or is exceeded by the cooling capacity to ensure firstly you are getting the job done and secondly that you are not burning up too much power

To effectively select the most energy efficient split system air conditioning unit for your home, you should firstly work out how much power you will need to effectively cool it. Below is a rough guide, but it is always better to speak with your air conditioning specialist before your commit to your purchase:

  • Ideal for small spaces (10–25sqm): A 2.6kW unit suits a small study or compact bedroom.

  • Perfect for medium rooms (25–35sqm): Choose a 3.5kW system for a large bedroom, sitting area, or small dining room.

  • Recommended for larger zones (35–60sqm): A 5–6kW unit is suitable for offices or lounge rooms with adjacent areas.

  • Best for open plan areas (60–80sqm): Use a 7–8kW system for large lounges, open plan offices, or spacious living areas.

So, what next?

You have identified what size system you need; now it is time to work out which split systems are the best in terms of features to allow for efficiency. From the simple temperature control features, sleep functions and timers that all work to ensure that the system shuts off as soon as a temperature or time limit is reached. This will enhance the efficiency of the operating system that you have picked to cool your home.

There is also an extensive range of split systems that have sensors that detect people and movement in the room. These innovative ‘artificial intelligence’ systems that will not jump off your wall Terminator-style but will simply adjust the temperature back up to the most efficient running temperature for the device. All these value-adding features all add up to produce extremely efficient split system air conditioning units.

You’re running late, did you forget to turn off the air conditioner?

We all live busy lives these days, constantly rushing and occasionally forgetting to turn off appliances before leaving home.
Many of us have wondered, “Did I leave the iron on?” or “Did I forget to turn off the air conditioner?”

Luckily, technology is helping us avoid energy waste with Wi-Fi-enabled split systems and smart control via smartphone or web applications.
High-end split system units now feature Wi-Fi connectivity, allowing remote access and control through your home network.

You can now turn your system off remotely if you forget before leaving the house—saving energy and reducing costs.
Even better, you can pre-cool or pre-heat your home before arrival by turning it on while en route.

This prevents overuse or blasting the system at maximum power to quickly reach the desired temperature once you get home.
Instead, you program an efficient, comfortable temperature ahead of time to optimise comfort and lower power bills.

Inverter Technology for Better Efficiency

Inverter systems have a variable-speed compressor that adjusts output based on real-time room temperature and conditions.
They are far more efficient than single-speed systems, which turn off once the target temperature is reached.

Inverter systems gradually adjust their output, keeping the temperature consistent without constantly switching on and off.
This means they consume less energy over time and provide better comfort for your home or office.

If you’re buying a new system, always choose inverter technology for improved performance and long-term energy savings.

Don’t Stress—Help Is Available

Now that you understand how to size a split system correctly, it’s time to review its energy-saving features.
Each brand offers different features designed to help reduce power usage and increase performance.

Fortunately, Australia’s government provides an energy rating system for all major appliances, including air conditioning units.
This independent review helps you identify the most energy-efficient units based on output and consumption.

While most consumers are familiar with five-star ratings, air conditioning systems can receive up to 12 stars in total.
Plus, bonus stars can be awarded for systems that exceed standard energy efficiency benchmarks in cooling or heating.

The standard 12 stars

When it comes to energy rating, the government takes it seriously. For air conditioning units that are not only split system but also reverse cycle, they have 6-star ratings for cooling as well as heating. Both have their capacity output as well as the power input required.

This form of rating allows you to see the efficiency in terms of the systems core functions in comparison to the guidelines of the government and ranked against the other models on the market.

The Extra Stars Explained

What are the extra stars for on energy efficiency labels?
Some super energy-efficient units are awarded additional stars—up to four more—for outstanding performance.

These extra stars sit above the standard semi-circle of six stars and represent the ‘super efficiency rating’.
Think of these units as the marathon runners of the air conditioning world—built for endurance and performance.

If your budget allows, these are the models your family should seriously consider for long-term savings and sustainability.

Heating vs. Cooling Efficiency

It’s rare to find a reverse cycle air conditioner that’s rated as highly efficient in both heating and cooling.
If you do find one, it will likely be a premium-priced unit with top-tier performance.

Instead, think practically:
What will you use the system for more—heating or cooling?
Choose your model based on the function you’ll rely on most throughout the year.

This strategy helps maximise your investment and ensures you get the most value from your energy-efficient split system.

Are You Considering Every Factor?

When purchasing a split system, there are multiple indicators of a smart investment beyond just star ratings.
These include room size, insulation, ceiling height, sun exposure, and unit placement.

If you’re unsure whether you’ve factored everything in—you’re not alone.
This is why it’s best to consult with a qualified, licensed air conditioning expert before making a final decision.

Get Expert Help with the Right System

Rite Price Heating & Cooling can help you navigate the complex world of energy-efficient split systems.
Our team ensures you choose the right system for your home and budget—without any hidden costs.

We provide a full-service solution, including:

  • Expert product advice

  • Tailored energy-efficient recommendations

  • Installation by licensed professionals

  • Transparent pricing and complete support

From ducted systems to portable, bulkhead, split, reverse cycle, and evaporative air conditioning, we have it all.
Our trusted brands and wide product range make it easy to find the best solution for your property.

Talk to the Experts at Rite Price

Want to keep your family cool, comfortable, and energy efficient all year round?
Then it’s time to ask the right questions—and get expert answers.

Contact the professional team at Rite Price Heating & Cooling today.
We’ll help you select the perfect split system air conditioning unit tailored to your needs and lifestyle.

Visit our showroom or explore more online today.