Posted on: July 8, 2021

5 Top Energy-Efficient Air Conditioners in 2021

Best tips from the team of professionals
So, how do you find an energy-efficient air conditioner?


When you’re shopping for a new air conditioner, of course, it’s essential to buy one that cools your home effectively.

But there’s more to buying an air conditioner than finding the right size to suit your space and budget. You also need to consider what kind of impact your brand-spanking-new unit will have on your power bill.

That means buying the most energy-efficient split system air conditioner possible. 

If you choose the wrong size unit, it will affect performance and how much power the unit chews through.

Choosing an Energy-Efficient Air Conditioner

That’s where our Australian energy rating labels come into play. When you see them plastered on household equipment, it means they’ve been tested for their power consumption and rated accordingly.

These labels indicate:

  • how much cooling and heating the appliance provides, 
  • how much power it uses, 
  • its noise level, and 
  • its cooling and heating efficiency. 

The higher the rating, the more energy-efficient the unit.

Split system air conditioners are typically the most energy-efficient air conditioner you can buy. And they’re the most popular type here in Australia.

Let’s dig into the rating labels to help you understand what you’re buying.

Zoned Energy Rating Label (ZERL)

All residential aircon units sold after April 1, 2020, must display the new ZERL. This information helps you make better choices when buying an energy-efficient air conditioner or household appliance. 

The label provides a seasonal efficiency rating for three climate zones for Australia and our mates across the pond in NZ:

  • hot, 
  • average, and 
  • cold.
label for energy efficient air conditioner

Source: Energy Rating Aust.

To understand the energy efficiency of your unit, you’ll need to consider the following:

1. Climate Zone

Take a look at the map. What climate zone do you live in? You’ll see the capital cities listed with Brisbane in the hot zone, Adelaide, Perth, and Sydney in the average zone, and Hobart, Melbourne, and Canberra in the cold zone.

2. Energy Usage

Take a look at the map. What climate zone do you live in? You’ll see the capital cities listed with Brisbane in the hot zone, Adelaide, Perth, and Sydney in the average zone, and Hobart, Melbourne, and Canberra in the cold zone.

To work out roughly how much you can expect to fork out on energy costs for your new appliance per year, add the blue and red kWh figures for your zone together. Then multiply that figure by your electricity tariff. The average tariff in Australia is $0.29 per kWh. Or you can use the government’s energy rating calculator.

3. Size Does Matter

How large is the space you’re looking to cool? Other factors that affect energy efficiency are the window’s size, shading, and orientation. And if you have insulation in your home.

4. Noise   

Have a look at the house icon at the bottom of the label. This will show you how much noise your unit will make when it’s cranking at full power. You’ll find separate noise ratings for the indoor and outdoor units. 

Now you know how to read the labels; which are the best energy-efficient split systems on the market?

Which are the best?

Here at Hello Breeze, we only stock well-known brands you can trust. So here’s our list of the top 5 energy-efficient air conditioners for Aussie homes.

1. Mitsubishi Heavy Industries AvantiPLUS® Series 2.0kW

Mitsubishi Heavy Industries is at the top of its game when it comes to a high-efficiency air conditioner. This whisper-quiet little number features an energy-saving motion sensor and eco operation. In addition, Clean Air Technology captures and neutralises smoke particles, allergens, odours, and bacteria.

Now you know how to read the labels; which are the best energy-efficient split systems on the market?

Model Number

SRK20ZSXA-W / SRC20ZSXA-W

Cooling Capacity

2.0kW

Heating Capacity

2.7kW

Energy Labels

Hot ZoneCooling✩✩✩✩✩
Heating✩✩✩✩
Average ZoneCooling✩✩✩✩
Heating✩✩✩✩
Cold ZoneCooling✩✩✩✩
Heating✩✩✩

Visit the manufacturer’s website or our product page for more information.

2. Mitsubishi Heavy Industries AvantiPLUS® Series 2.5kW

MHIAA’s award-winning AvantiPLUS® range also features a 2.5kW high-efficiency air conditioner. Enjoy a whisper-quiet operation and innovative functions such as adjustable LED display, eco-operation, and motion detection for energy efficiency.

Now you know how to read the labels; which are the best energy-efficient split systems on the market?

Model Number

SRK25ZSXA-W / SRC25ZSXA-W

Cooling Capacity

2.5kW

Heating Capacity

3.2kW

Energy Labels

Hot ZoneCooling✩✩✩✩✩
Heating✩✩✩✩
Average ZoneCooling✩✩✩✩
Heating✩✩✩✩
Cold ZoneCooling✩✩✩✩
Heating✩✩✩

Visit the manufacturer’s website or our product page for more information.

3. Daikin Cora Series 2.5kW

Daikin’s Intelligent Eye sensor detects human movement in the room and adjusts the airflow direction accordingly. If the space is unoccupied for more than 20 minutes, the operation automatically switches to energy-saving mode.

Model Number

FTXV25UVMA/RXV25UVMA

Cooling Capacity

2.5kW

Heating Capacity

3.2kW

Energy Labels

Hot ZoneCooling✩✩✩✩✩
Heating✩✩✩½
Average ZoneCooling✩✩✩✩✩
Heating✩✩✩
Cold ZoneCooling✩✩✩✩✩
Heating✩✩½

Visit the manufacturer’s website or our product page for more information.

4. Rinnai Q Series 2.5kW 

 Rinnai’s Q Series Inverter Split System is designed for our volatile climate. This high-quality air conditioner offers a sleek contemporary design, Wi-Fi control, quiet operation, and a self-cleaning function.

Model Number

HINRQ25B/HONRQ25B

Cooling Capacity

2.5kW

Heating Capacity

2.5kW

Energy Labels

Hot ZoneCooling✩✩✩✩✩
Heating✩✩✩✩✩
Average ZoneCooling✩✩✩✩✩
Heating✩✩✩✩✩
Cold ZoneCooling✩✩✩✩✩
Heating✩✩✩✩✩

Visit the manufacturer’s website or our product page for more information.

5. Rinnai Q Series 3.5kW 

 Offering all the same features as the 2.5kW, choose the 3.5kW model to cool and heat large bedrooms, offices, and medium-size living areas. 

Model Number

HINRQ35B/HONRQ35B

Cooling Capacity

3.4kW

Heating Capacity

3.5kW

Energy Labels

Hot ZoneCooling✩✩✩✩✩
Heating✩✩✩✩✩
Average ZoneCooling✩✩✩✩✩
Heating✩✩✩✩✩
Cold ZoneCooling✩✩✩✩✩
Heating✩✩✩✩✩

Visit the manufacturer’s website or our product page for more information.

Is it worth buying an energy-efficient air conditioner?

You’d be forgiven for believing that an energy-efficient air conditioner will cost an arm and a leg.

However, the sticker price only tells half the story. You have to take into consideration the running costs—which can quickly add up. 

So, buying the most energy-efficient split system air conditioner not only stops you from haemorrhaging money. But it helps you to be kinder to our planet. Which also appeases any budding Greta Thunbergs in your household.

Want more info on split systems? Check out our installation guide and our super-easy booking process.

Or, if you want to have a chat with us about a high-quality air conditioner for your home, give us a bell on 1300 712 732, or ask us for a quote!

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