South East Queensland has barely made it into spring and Brisbane has already recorded temperatures above 34°C.
That first burst of heat tends to trigger the same decision in homes across the region: do you switch on the air conditioner, turn on the ceiling fan, or use both?
The answer depends on the conditions.
A ceiling fan and an air conditioner actually do two very different jobs. Understanding the difference can help you stay comfortable while avoiding unnecessary electricity use as Queensland heads towards summer.
A Ceiling Fan Doesn’t Actually Cool the Room
This is probably the biggest misconception about ceiling fans.
A fan doesn’t remove heat from a room in the way an air conditioner does. Instead, it moves air across your body.
That airflow helps your body release heat and makes perspiration evaporate more effectively, which makes you feel cooler even though the actual room temperature may remain almost unchanged.
That’s why leaving a ceiling fan running in an empty room generally achieves very little. The fan is cooling the occupants, not the room itself.
But when somebody is actually in the room, that simple movement of air can make an enormous difference to comfort.
An Air Conditioner Does Cool the Room
An air conditioner works differently.
It actively transfers heat from inside the house to outside, reducing the indoor air temperature. Refrigerated air conditioning can also reduce humidity, which becomes particularly important during a South East Queensland summer.
That’s where air conditioning has a major advantage.
On a relatively dry 27°C afternoon, moving air from a ceiling fan may be all you need.
When it’s 34°C outside with high humidity and the western sun is heating the house, simply moving that hot air around may not be enough.
That’s when air conditioning starts earning its keep.
So Which Is Cheaper to Run?
Ceiling fans win this one comfortably.
The Australian Government recommends using fans before reaching for the air conditioner where conditions allow because fans use considerably less electricity. Its summer energy guidance estimates a typical portable fan can cost only around two to three cents an hour to operate.
Ceiling fans are generally among the most energy-efficient ways to create cooling comfort within an occupied room.
Air conditioners naturally consume considerably more electricity because they’re doing considerably more work. Instead of simply moving air, they’re operating a refrigeration system to physically remove heat from the building.
That doesn’t mean you shouldn’t use air conditioning. It means using it intelligently.
The Best Answer Is Often: Use Both
This is where the comparison gets interesting.
A ceiling fan can actually make your air conditioner more effective from the occupant’s point of view.
Energex recommends using fans to circulate cooled air because the additional airflow can allow occupants to remain comfortable while setting the air conditioner to a higher temperature.
That matters because thermostat settings have a significant effect on electricity consumption.
Energex recommends around 25°C for summer cooling and estimates that every additional degree of cooling can add around 10% to the electricity used by the air conditioner.
Australian Government energy guidance similarly recommends setting air conditioning between approximately 25°C and 27°C and notes that increasing the thermostat by one degree can reduce cooling energy costs by around 5–10%.
In other words, instead of trying to make your living room feel like a refrigerator, you could potentially:
- set the air conditioner around 25–26°C;
- run the ceiling fan;
- allow the fan to circulate the cooled air throughout the occupied area; and
- still feel comfortable without demanding maximum cooling from the air conditioner.
For many Queensland homes, that’s the sweet spot.
When Does a Ceiling Fan Make Sense by Itself?
There are plenty of days where switching the air conditioner on immediately isn’t necessary.
A ceiling fan may be enough when:
- the temperature is warm rather than extremely hot;
- humidity is relatively low;
- you can create natural cross-ventilation through the house;
- the room isn’t receiving significant direct afternoon sun;
- you’re cooling a bedroom overnight;
- you’re using a covered patio or entertaining area; or
- you simply want some airflow without cooling the entire space.
Spring is a perfect example.
South East Queensland can jump into the 30s during the day and then cool considerably in the evening. On those days, running an air conditioner for hours may be unnecessary when a good ceiling fan and some natural ventilation can keep the room comfortable.
When Does Air Conditioning Become the Better Option?
There is eventually a point where airflow alone isn’t enough.
Air conditioning becomes particularly useful when:
- outside temperatures become very high;
- humidity makes evaporative cooling from the body less effective;
- a room receives substantial direct sunlight;
- the house retains significant heat into the evening;
- doors and windows need to remain closed;
- someone works from home throughout the hottest part of the day; or
- comfortable sleeping temperatures become difficult to maintain.
The hotter and more humid the conditions become, the more useful actual temperature and humidity control becomes.
Bedrooms Are Where Ceiling Fans Really Make Sense
If you’re considering installing fans before summer, bedrooms are often one of the best places to start.
Running an air conditioner throughout the entire night can become expensive, particularly if several bedrooms require cooling.
A ceiling fan provides continuous airflow directly over the bed and may be sufficient on milder nights. On hotter nights it can complement air conditioning, potentially allowing a higher thermostat setting while maintaining comfort.
Modern DC ceiling fans can also offer very low-speed settings, which can be useful overnight when you want gentle airflow rather than a strong breeze.
What About Living and Entertaining Areas?
Large open-plan living areas are another good candidate.
Air conditioning can cool the air, but a well-positioned ceiling fan helps distribute that air through the occupied space.
Fans can be even more useful in covered outdoor areas where conventional refrigerated air conditioning isn’t practical.
A ceiling fan above a patio, deck or outdoor dining area can make the space considerably more comfortable during Queensland’s warmer months.
When choosing an outdoor ceiling fan, however, it’s important to select a product that is actually suitable for the installation environment rather than simply installing an indoor fan outside.
Not All Ceiling Fans Are the Same
If your existing fans are old, noisy or barely seem to move air, replacing them can make a surprisingly noticeable difference.
Things worth considering include:
- Fan diameter: larger rooms generally require greater air movement.
- Ceiling height: the position of the blades affects how effectively the fan moves air through the occupied area.
- AC vs DC motors: modern DC fans can provide excellent efficiency, quiet operation and greater speed control.
- Indoor or outdoor use: fans installed in patios and exposed areas need to be appropriate for those conditions.
- Integrated lighting: replacing an existing light fitting with a fan can also be an opportunity to improve the lighting in the room.
- Control options: wall controls, remotes and compatible smart controls can change how convenient the fan is to use.
Where You Put the Fan Matters Too
Buying a good fan doesn’t automatically guarantee good airflow.
Its position within the room, distance from surrounding walls and fittings, ceiling height and relationship with existing lighting all matter.
If you’re installing both new lighting and ceiling fans, it makes sense to consider them together.
A poorly positioned downlight can create an annoying flickering or strobing effect as the fan blades pass beneath it, while badly positioned fans may not deliver airflow where people actually spend their time.
Planning the room as a whole generally produces a better result than simply installing fixtures wherever an existing cable happens to be.
Can I Install a Ceiling Fan Myself?
For a conventional hardwired ceiling fan in Queensland, this is electrical work.
The Queensland Electrical Safety Office specifically identifies replacing a light fitting with a ceiling fan as work that should be performed by a licensed electrician.
There’s also more involved than simply connecting a few wires. The mounting point needs to safely support the fan, the electrical installation needs to be suitable and the fan needs to be positioned and installed correctly.
Don’t Wait Until the First Heatwave
Brisbane reached 34.5°C during the first week of September this year.
That’s a fairly good reminder that South East Queensland doesn’t necessarily wait until December before the hot weather arrives.
If you spent last summer putting up with a noisy fan, a bedroom with poor airflow or a living area where the air conditioner seems to do all the work, spring is a good time to fix it.
The choice doesn’t have to be air conditioning or ceiling fans.
For many homes, the most comfortable and energy-conscious setup is having both available and using the right one for the conditions.
Power Bolt Electrical can install and replace ceiling fans, upgrade lighting and help you prepare your home’s electrical systems for another South East Queensland summer.
If you’ve got fans or lighting you’ve been meaning to upgrade, get in touch with Power Bolt Electrical before the summer rush gets underway.
Frequently Asked Questions
Is a ceiling fan cheaper to run than air conditioning?
Yes. Ceiling fans generally use significantly less electricity than refrigerated air conditioning because they move air rather than actively removing heat from the room. For mild and moderately warm conditions, a ceiling fan may provide enough comfort without needing to run the air conditioner.
Does a ceiling fan actually cool a room?
A ceiling fan does not significantly reduce the actual temperature of a room. Instead, it moves air across your body, helping heat leave the skin and making you feel cooler. This is why ceiling fans are most useful when people are actually occupying the room.
Should I use a ceiling fan and air conditioner together?
Using a ceiling fan and air conditioner together can be an effective way to stay comfortable. The air conditioner reduces the room temperature while the fan circulates the cooled air and increases the cooling effect felt by occupants. This may allow the air conditioner to be operated at a higher thermostat setting.
What temperature should I set my air conditioner to in summer?
Queensland energy guidance commonly recommends a summer air-conditioning setting of around 25 degrees Celsius. Using a ceiling fan at the same time may help occupants remain comfortable without setting the air conditioner significantly colder.
Are ceiling fans good for bedrooms?
Yes. Bedrooms are one of the most useful places for ceiling fans because airflow directly over the bed can improve sleeping comfort. On milder nights a fan may be enough by itself, while on hotter nights it can complement air conditioning.
Can I install a ceiling fan in an outdoor entertaining area?
Yes, provided the fan is suitable for the installation environment. Covered patios and outdoor entertaining areas can benefit greatly from ceiling fans during warmer weather, but the fan selected should be appropriately rated for outdoor use and installed by a licensed electrician.
Can I install or replace a ceiling fan myself in Queensland?
Hardwired ceiling fan installation and replacement involves electrical work and should be completed by an appropriately licensed electrician in Queensland. The mounting point, electrical connections and positioning of the fan all need to be suitable for the installation.
What should I consider when choosing a new ceiling fan?
Important considerations include the size of the room, ceiling height, fan diameter, airflow, noise, motor type, control options, whether integrated lighting is required and whether the fan will be installed indoors or outdoors.