Busted! 8 Weird Air Conditioning Myths (That Could Be Costing You)
Whether you’re running a ducted system in Noosa or a split system in Buderim, chances are you’ve heard at least one of these air conditioning myths — and possibly even believed it.
But misinformation can lead to:
- Higher power bills
- Unnecessary wear and tear
- Reduced system performance
- Poor comfort levels
Let’s bust some of the most common (and strange) air conditioning myths we hear on the Sunshine Coast.
❌ Myth 1: Cranking the Temp to 16°C Cools the Room Faster
Reality: Your system cools at a consistent rate, no matter the temperature setting.
Setting your system to a very low number like 16°C doesn’t speed up cooling — it just keeps the unit running longer, wasting energy and overshooting your comfort zone.
✅ Best practice: Set your unit to around 22–24°C for efficient, consistent comfort.
❌ Myth 2: Ceiling Fans Make the Room Cooler
Reality: Fans move air — they don’t change the actual room temperature.
They create a wind-chill effect, helping your skin feel cooler, but they do nothing to reduce the heat load in the room. Leaving them running in empty rooms just wastes electricity.
✅ Use fans with air con to improve airflow — then turn them off when you leave.
❌ Myth 3: Air Conditioners Only Cool the Air
Reality: Air conditioners also remove humidity, which is key in Sunshine Coast’s sticky climate.
Dry air feels cooler than humid air, even at the same temperature. That’s why modern inverter systems are so effective here — they dehumidify as they cool, making 24°C feel perfectly comfortable.
✅ Choose units with humidity control or “Dry” mode for extra muggy days.
❌ Myth 4: No Service Needed if It’s Working Fine
Reality: Out of sight shouldn’t mean out of mind.
Even if your system seems to run fine, it can be building up:
- Dust and allergens in the filters
- Mould or bacteria in the coil
- Blockages in drains or ducts
- Rust in outdoor components
✅ Regular servicing ensures longevity, better air quality, and efficiency — and keeps your warranty valid.
❌ Myth 5: Bigger Air Conditioners Are Better
Reality: Oversizing can make things worse.
A system that’s too powerful will short cycle — constantly turning on and off — which wears out components faster and doesn’t allow proper humidity removal. That can lead to cold, damp, uncomfortable spaces.
✅ Always size your unit based on room volume, not guesswork. The Cool Shop does this with every quote.
❌ Myth 6: Close Vents in Unused Rooms to Save Power
Reality: This can increase pressure in ducted systems and force the unit to work harder.
Closing vents can also lead to short cycling, noisy airflow, and reduced lifespan of your ducting and fan motor.
✅ Use zoning features instead (like MyAir or Daikin Zone Controller) to efficiently direct air only where you need it — without damaging the system.
❌ Myth 7: “Dry Mode” Is Perfect for Queensland
Reality: It’s not always the right choice.
Dry Mode reduces humidity without lowering temperature — which can be useful in mild, sticky conditions. But during peak summer, it often leaves the room too warm and stuffy.
✅ Use Dry Mode in shoulder seasons, and switch to Cooling when the heat is on.
❌ Myth 8: Ducted Is Always More Expensive Than Split Systems
Reality: It depends how you use it.
A well-designed, zoned ducted system can be just as efficient as multiple split systems — especially when cooling a whole house.
The key is proper zoning, insulation, and usage. Ducted also offers benefits like:
- Even comfort throughout
- Aesthetics (no wall units)
- Smart control (MyAir, AirTouch, etc.)
✅ Cooling one room? Use a split. Cooling multiple areas regularly? Ducted may be the better value long-term.
Final Word: Don’t Let Myths Cost You Comfort or Cash
Misinformation can lead to inefficient cooling, premature system failure, and unnecessary bills. If you’re ever unsure — just ask the pros!
At The Cool Shop, we help Sunshine Coast locals get the most out of their air conditioning investment. Whether you’re upgrading, replacing, or maintaining, we give you honest advice and properly engineered solutions.
Speak to Your Local AC Experts
📍 The Cool Shop – 2/3–5 Runway Drive, Marcoola
📞 (07) 5450 5000
💻 Get in Touch or Book a Free Quote
Need help separating air con fact from fiction? We’re here to help you stay cool, stay smart, and stay comfortable.
