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When the Australian summer hits full force, having an efficient air conditioner is not just about comfort—it’s about survival. But what is the best temperature setting for your air conditioner during summer? Striking the perfect balance between cooling and energy efficiency can save you money while keeping your home comfortable.
In this comprehensive guide, we’ll explore the ideal air conditioning temperature, how to reduce electricity consumption, and tips to maximise cooling without skyrocketing your power bill. Whether you’re in Sydney, Melbourne, Brisbane, Perth, or regional Australia, these insights will help you optimise your air conditioning system for the hot months ahead.
The ideal temperature setting for an air conditioner during summer in Australia is between 24°C and 26°C. According to energy experts, setting your aircon within this range ensures maximum efficiency without excessive power usage.
While setting your air conditioner to 24°C–26°C is a great starting point, you can further improve efficiency and cooling performance by following these expert tips.
Air conditioning power consumption depends on various factors, including:
✔ Unit size (small split systems vs. large ducted units)
✔ Efficiency rating (inverter vs. non-inverter models)
✔ Usage duration (how many hours per day it runs)
✔ External climate (coastal cities like Sydney and Perth vs. drier regions like Adelaide or Alice Springs)
| Air Conditioner Type | Average Power Consumption (kWh per hour) | Estimated Cost (Per Hour) @ 30c/kWh |
|---|---|---|
| Split System (2.5kW) | 0.5 – 0.7 kWh | $0.15 – $0.21 |
| Split System (7.0kW) | 1.5 – 2.5 kWh | $0.45 – $0.75 |
| Ducted Air Conditioning | 2.5 – 6.0 kWh | $0.75 – $1.80 |
| Portable Air Conditioner | 1.0 – 2.5 kWh | $0.30 – $0.75 |
💡 Pro Tip: Consider upgrading to a 5-star energy-rated air conditioner for long-term savings on electricity bills.
A common debate in Australian households is whether to turn off the AC when leaving the house or let it run at a higher temperature. The answer depends on how long you’re away:
✔ If you’re leaving for a few hours – Set the thermostat higher (28°C-30°C) rather than turning it off completely. This prevents your home from overheating and reduces the AC’s workload when restarted.
✔ If you’re away for the day – Turn it off completely to avoid unnecessary power usage.
✔ If you use a smart thermostat – Program it to gradually cool the house before you return.
While optimising your air conditioning settings, you can further reduce energy consumption by improving overall electrical efficiency in your home.
✔ Switch to LED Lighting – Traditional bulbs generate heat, increasing indoor temperature.
✔ Use Ceiling Fans – Running a fan with your air conditioner allows you to set the temperature 2–3°C higher without sacrificing comfort.
✔ Invest in Smart Plugs & Timers – These allow you to control appliances remotely, reducing standby power usage.
✔ Improve Home Insulation – Proper insulation in walls and ceilings helps maintain a stable indoor temperature.
The most efficient air conditioner temperature for summer is between 24°C and 26°C, according to Australian energy regulators.
Yes, if you’re gone for several hours, turning off the AC can save electricity. If you’re only stepping out briefly, set it to 28°C-30°C instead of turning it off completely.
✔ Set the thermostat to 24°C-26°C
✔ Use ceiling fans to improve air circulation
✔ Clean air filters regularly
✔ Seal gaps around doors and windows to prevent cool air leakage
No, running your AC all day is more expensive than cooling the house only when needed. Smart thermostats and timers can help regulate temperature without excessive power consumption.
For optimal sleep quality, set your air conditioner to 18°C-22°C, as cooler temperatures promote deeper sleep. Use Sleep Mode to gradually increase temperature overnight.
Finding the best temperature setting for your air conditioner in summer is all about comfort, energy efficiency, and cost savings. By keeping your AC at 24°C-26°C, using the right settings, and maintaining your unit properly, you can enjoy a cool home without overspending on electricity.
Whether you live in Sydney, Melbourne, Brisbane, Perth, Adelaide, or regional Australia, these expert tips will help you get the most out of your air conditioning system. Stay cool, stay energy-smart, and enjoy an efficient air conditioning experience this summer!
Alter Electrical are a small business servicing the Gold Coast. Professional and experienced electrical contractor providing affordable rates to clients looking for a reliable local electrician who delivers quality work and exceptional service.
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