When To Replace Split System Air Conditioner?
- Leon Tong

- Feb 10, 2024
- 4 min read
Updated: Apr 14

Key Takeaways
Financial Savings: Upgrading to an efficient model like the Alira X can save you up to 28% on yearly running costs.*
Health Focus: New Daikin split systems are Sensitive Choice approved to help manage asthma and allergies.
Advanced Filtration: Streamer Technology actively breaks down indoor allergens like pollen and mould.
Expert Support: A Daikin Specialist Dealer can help you navigate the new Zoned Energy Rating Labels.
With the extreme summer heat behind us, it’s the ideal time to assess your home’s cooling setup. If your unit struggled during the recent hot months, made odd noises, or couldn’t hold a steady temperature, an upgrade is likely the best move. New systems offer much higher energy efficiency and health perks than units from ten years ago.
Why You Should Consider a Split System Upgrade
Air conditioners have evolved significantly in recent years. Old, inefficient models contribute heavily to your energy bills, making an upgrade a wise financial decision. Since we spend 90% of our time indoors, cooling can account for up to 40% of your annual energy bill, having the latest technology pays off. Daikin was recently crowned top performing split air conditioner brand because of our focus on quality and efficiency.
When you replace your unit, consider the return on your investment. While a premium model might have a higher initial cost, the long-term savings are substantial. For example, a Daikin Alira X installed in NSW could save you up to $1,144** on running costs over ten years compared to less efficient units. This gives you peace of mind to stay cool without fearing a massive electricity bill.
How To Choose the Best Split System for Your Home
The first step is defining your needs based on the size of your room. An undersized unit will work too hard and fail early. An oversized unit will waste energy. Here is a guide on what to consider when buying an air conditioner to help your journey.
Secondly, you need to understand the Zoned Energy Rating Label. Australia is divided into hot, average, and cold climate zones. A unit that is efficient in Hobart might perform differently in Brisbane.
To get a more accurate picture of performance, look for the star rating specific to your climate zone. This gives a far better indication of how an air conditioner will run in your local conditions.
It’s also worth understanding how reverse cycle air conditioners work, as this helps explain why these modern energy labels are so important.
Protecting Your Family with Streamer Technology
Upgrading your split system can also improve your indoor air quality, an important benefit considering one in nine Australians live with asthma. Many Daikin split systems are approved by the National Asthma Council Australia’s Sensitive Choice program and carry the blue butterfly symbol, identifying them as asthma and allergy-friendly.
Some models also feature Daikin’s Streamer Technology, which uses a high-speed electron discharge to activate air molecules and help break down pollutants captured in the filters. This makes it highly effective against:
Dust Mites and Mould: Which thrive in humid Australian homes.
Pollen: The primary trigger for seasonal hay fever.
Pets and Allergies: Dander and saliva that can linger in the air for hours.
VOCs: Chemicals released by household cleaners and paints.
Understanding The New Zoned Energy Rating Labels
The new labels are designed to take the guesswork out of choosing an air conditioner. Here’s what to look for:
Cooling and Heating Capacity: This indicates the unit’s power output, the higher the number, the greater its ability to cool or heat a space.
Sound Levels: Measured in decibels (dB), lower numbers mean quieter operation, making a big difference in bedrooms or living areas.
Star Ratings: The more stars, the more energy efficient the unit. Be sure to check the rating for your specific climate zone to get the most accurate performance estimate.
Energy Usage: This estimates how much energy the unit will consume in each climate zone. While based on a standard household, it’s a useful guide. Multiply the figure by your electricity tariff (c/kWh) to estimate annual running costs.
Get Professional Advice for Your Home
Choosing the perfect split system does not have to be difficult. If you are ready to enjoy cleaner air and lower energy bills, speak to an expert. Our Daikin Specialist Dealers provide professional assessments to ensure you get the right unit for your specific needs. They can also explain our Service and Maintenance plans to keep your new unit running perfectly for years to come.
FAQs
When to replace split system air conditioner units?
You should consider replacing your unit if it’s over 10 years old, your energy bills have increased, or it’s becoming noticeably louder. Reduced cooling performance is another key sign that internal components may be failing.
What is the best air conditioner for allergies in Australia?
A Daikin split system with Streamer Technology is a strong choice. Many models are Sensitive Choice approved and designed to help break down common allergens like pollen, dust mites, and pet dander.
How much can I save with an energy efficient split system?
Upgrading to a high-efficiency model with strong star ratings, such as the Alira X, can reduce your annual running costs by up to 28%*. Over time, this can add up to savings of up to $1,144**, depending on your electricity tariff and climate zone.
What does the Sensitive Choice blue butterfly mean?
The blue butterfly symbol is awarded by the National Asthma Council Australia. It indicates that a product has been independently assessed and is designed to support people living with asthma and allergies.
How do I know what size split system I need?
While larger spaces generally require higher-capacity systems, the best approach is to consult a Daikin Specialist Dealer. They can recommend the right size based on your room dimensions, insulation, and overall home layout.
*Up to 28% annual running cost savings, based on the Australian Government Energy Rating Calculator. Actual savings vary depending on the system replaced and usage conditions.
**Up to $1,144 annual running cost savings, based on the Australian Government Energy Rating Calculator. Actual savings vary depending on the system replaced and usage conditions.

Our Daikin Expert
Leon Tong is an Assistant Product Manager at Daikin Australia, focused on residential air conditioning solutions. He works on products designed to improve comfort, energy efficiency and everyday living at home.












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