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Myth-Busting Air Conditioning: What Every Aussie Should Know

As the temperatures start to rise across Australia, our air conditioner becomes our best mate. Whether it's cooling down the house after a scorching day or making sure the whole family stays comfortable during those muggy summer nights, it's essential to have your air conditioning system running smoothly. But with so much advice floating around, how do you separate fact from fiction? 


*Every home and air conditioning system is unique in terms of size, usage, and environmental factors. While this advice offers general guidance, it’s always best to consult with professionals like us for tailored advice for your specific setup.


Now let's bust some common air conditioning myths so you can keep your home cool, efficient, and save on energy bills.



Myth 1: Bigger AC Units Always Cool Better

Bigger isn’t always better! Oversized ACs shut off too quickly, wasting energy and leaving hot spots in your home. It’s all about finding the perfect fit. We offer a wide range of split and ducted systems designed to fit your home and maximise energy efficiency. We help you avoid the trap of oversized units.



Myth 2: The Sun Symbol Means Summer (Cooling )

Many believe that the sun symbol on thermostats indicates cooling because it’s associated with summer. However, this is a misconception. The sun actually represents heating, while the snowflake symbol denotes cooling. Understanding these symbols is crucial for setting your air conditioning correctly.



Myth 3: You Just Need to 'Top-Up' Refrigerant (Gas) Regularly

Refrigerant, or ‘gas’ as many call it, doesn’t need topping up unless there’s a leak. It’s a closed system, and if a “top-up” is suggested regularly, something might be off. If you suspect a leak, get in touch via our 24/7 Emergency Call Out service and we will quickly assess and fix any refrigerant issues.



Myth 4: Setting the Thermostat Lower Cools the Room Faster

Cranking your thermostat to 16° won’t cool your house faster—it’ll just overwork your AC! Stick to a comfortable 22°-23° to keep things cool without putting unnecessary strain on your system. With On Call, we can program your system for efficiency, saving you energy and wear and tear.



Myth 5: ACs Only Cool the Air

Today’s air conditioners do more than just cool—they also dehumidify, making your home feel more comfortable during muggy Aussie summers. With On Call, we supply the best brands on the market that offer reverse cycle systems for year-round comfort in both cooling and heating.



Myth 6: Frequent Duct Cleaning Boosts Efficiency

Internal duct cleaning is only necessary if there’s a specific issue like mould or pests. In many cases, replacing the duct can be a more economical option, as it’s nearly impossible to clean the entire duct run. The real secret to maintaining an efficient AC system is regularly cleaning or replacing your filters. Dust, pet hair, and bacteria can clog filters and reduce airflow, so keeping them clean is essential for a well-functioning system.



Myth 7: New AC Units Don’t Need Maintenance

Even brand-new systems need a bit of TLC. Regular maintenance keeps everything running smoothly and catches minor issues before they become big headaches. After 6 to 12 months, book your first service with On Call to extend the lifespan of your system.



Myth 8: It’s Fine to Keep Windows and Doors Open When Running the AC

Keep the cool air in! Running your AC with windows and doors open means your system works overtime, costing you more in energy bills. Sealing up your space ensures faster cooling and a more efficient system.



Myth 9: Error Codes Mean Big Problems

Error codes don’t always spell disaster. Sometimes, a quick reset at the switchboard can resolve the issue. However, if the code persists or you’re unsure about the cause, it’s best to call a professional. Avoid troubleshooting on your own, as tampering with the system can pose safety risks. On Call’s expert team is here to handle tricky error codes and prevent small issues from becoming costly problems.



Myth 10: Warranty Covers Everything

Think your AC warranty covers everything? Not so fast! Most new installs come with a 5-year warranty, but parts often have just a 1-year manufacturer warranty. On Call provides new installations with long warranties, plus ongoing maintenance for older systems to prevent expensive repairs.



Ready to Get the Most Out of Your AC?

At On Call Air Conditioning & Refrigeration, we understand how essential it is to stay cool during an Aussie summer. Whether you’re looking for a new installation, routine service, or a fast emergency repair, we’ve got your back with expert 24/7 support. Let us help keep your home comfortable all year long.


Contact us today for a free quote and experience top-notch service, because - comfort starts with a call.



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