
While you can’t control the seasons, picking up the remote and selecting the perfect temperature during these chillier months can make all the difference to feeling cosy and comfortable in your home. But what is the right temperature setting for your aircon during the winter season?
During wintertime, most Aussies set their residential air conditioning to around the mid-twenty degree mark. But did you know that even the slightest changes to your air conditioning can save you money? Constant over-cooling or heating buildings, especially in commercial workplaces, affects building energy use, greenhouse gas emissions and increases your electricity bills. Knowing the correct winter air conditioning temperature can save you money and help you do good for the planet.
What’s the best winter air conditioning temperature?
Deciding on the perfect temperature for your commercial air conditioning or home can be a hot topic of debate. People typically have their preferences and some naturally run warmer than others, so it’s unlikely you’ll ever be able to please everyone. However, the most common recommendation that appeals to the majority is somewhere between the 18 to 20-degree mark in wintertime. If you’re usually the one to turn up the heat, just a few degrees can make a huge difference.
- Every degree that you increase the temperature of your air conditioner in winter, raises your energy use by up to 10 per cent.
What is the optimal air conditioner temperature in Winter?
Operating your air conditioner around the 20-degree mark in winter will ensure you’re using the unit in an energy-efficient way. Even at night time, the ideal temperature should be no lower or higher than that. Moderate energy use can help reduce your energy bill whilst keeping you and your family warm in winter. Since even a one-degree change can increase costs by 10 per cent, we suggest you stick to this recommendation by the Department of Energy.
Which air con unit should I buy?
If you haven’t had the chance to equip your home with an aircon just yet, it’s not too late. This is the perfect time to buy a new unit! But what type of unit should you buy? Which units are best for your home’s needs and what size aircon does your home require? Rest assured, Air-Rite is here to help make shopping and installing your new aircon unit a breeze.

Buy according to your homes needs:
- Low-cost aircon units: These are portable units with virtually no boundaries. As the name suggests, you can pick these units up and move them around the house to plug them in where required. They come in pretty handy if you think you’ll be on the move a lot, or if you want to select which rooms to heat when. But whilst they are cheap – prices typically range from $100 to 1000, they aren’t at all energy efficient or as effective compared to other, a little pricier units.
- Medium range aircon units: Common in split system units, these come in pairs of two: A rectangular part that is mounted inside and the compressor unit on the outside of the building. One of the more popular options amongst Australians, this type of unit is generally the most energy-efficient. You could get your hands on one of these anywhere for as little as $500 to $5,000.
- High-cost units: Ducted air conditioners come at a cost, both in terms of installation and energy use. These types of units are commonly built into new homes. Also known as central air conditioning, the air comes out of vents in the ceiling. Prices generally exceed $5,000.
To be winter-ready, browse our selection of air conditioning units, and find the ideal unit for your home, needs and preferences.
Don’t forget to consider the climate where you live
Australia is home to quite unpredictable weather and is often referred to as the land of diversity in terms of climate. We have it all: tropical rainforests, golden beaches, sparse deserts, vast grazing lands. Because of this, our states’ climates vary from sweltering hot summers to ice-cold winters. With such varying climates, you must consider the state you reside in when purchasing an air conditioner, and what your heating requirements will be as a result.
Live in cooler states?
If your winters get chilly, you’ll need a reliable AC to warm up your home. A split system or ducted Aircon will suit most places, however, the suitability will vary depending on the space you wish to hear. And remember, whilst split systems are not the cheapest option, they do save you money in the long run and are more eco-friendly and effective than portable aircons.
Live in warmer states?
The Northern parts of Australia boast tropical climates and hot conditions all year around. Yet, nights in these areas can be very cold at times and having the option to heat your bedroom can come in handy. In this case, a split system or a ducted air conditioner are the right choice. Anything else may not cut it in the next summer heatwave.

What size air conditioning unit is right for me?
Forget bigger is better, you need a unit tailored to the size and conditions of your home. It’s time to end the myth that larger aircon units mean more efficient heating, as this can’t be further than the truth. It has all to do with the size of the room and the type of home you’re trying to heat. To get the right size conditioner, you can contact our staff who will be able to advise you today.
Have room measurements on hand
When figuring out what size aircon unit is right for you, it’s invaluable to have the length, width and ceiling height of the room or space on hand. This will prevent you from purchasing or installing the incorrect size unit, and with winter just around the corner, you want to make sure to get it right.
Take note of your home’s insulation
Not only the size of the room and height of the ceiling play a role – whether or not your home has floor and roof insulation can also have a huge impact on air conditioning. Insulation is a crucial factor, as it affects your home’s ability to maintain the indoor temperature, even if it’s snowing outside. With good insulation, you can save a tonne of money as you will need to cool or heat your home much less.
Tips for Using Air-conditioning in Winter:
When using air conditioning during winter, here are some tips to keep in mind:
- Set the thermostat correctly: Adjust your thermostat to a temperature that provides comfortable heating without excessive energy consumption. A recommended temperature range is around 20-22 degrees Celsius. Avoid setting it too high, as it can lead to energy waste and higher utility bills.
- Use the “auto” fan setting: Set your air conditioner’s fan to the “auto” mode rather than “on.” This allows the fan to operate only when the heating system is actively producing warm air. It helps maintain a more consistent temperature and reduces energy consumption compared to running the fan continuously.
- Seal air leaks: Inspect your home for any air leaks around windows, doors, and other areas where warm air can escape and cold air can enter. Seal these leaks with weatherstripping or caulk to improve energy efficiency and prevent drafts.
- Insulate properly: Adequate insulation is essential for maintaining a comfortable indoor temperature and preventing heat loss. Insulate your home’s walls, attic, and crawl spaces as needed. Proper insulation helps retain heat and reduces the workload on your heating system.
- Use zone heating: If your home has multiple heating zones, close off the vents or use dampers to regulate the airflow to different areas. This way, you can focus the heat on the occupied spaces while reducing energy consumption in unoccupied areas.
- Maintain your HVAC system: Regularly clean or replace air filters to ensure efficient airflow and optimal performance of your heating system. Additionally, schedule professional HVAC maintenance to inspect and tune up your HVAC system before the winter season begins.
- Consider a programmable thermostat: Installing a programmable thermostat allows you to schedule temperature adjustments based on your daily routine. It can help save energy by automatically reducing the temperature when you’re away or asleep and increasing it when you’re active and present.
- Use natural sunlight: During the daytime, open curtains or blinds on south-facing windows to allow sunlight to enter and naturally warm your home. Close them at night to retain the heat.
- Use ceiling fans wisely: Ceiling fans can be useful even during winter. Set the fans to rotate clockwise on low speed, which helps circulate warm air that rises to the ceiling back down into the living space.
Remember, the specifics of air conditioning use in winter may vary depending on your location, climate, and the type of HVAC system you have. It’s always a good idea to consult with a professional HVAC technician for personalised advice based on your specific circumstances.
Choosing the right HVAC technician
Now that we’ve helped you determine which temperature and what type of aircon unit is the most suitable for you, it’s time you find a professional installer to get the job done! Installing an air conditioner DIY style isn’t a wise idea. It’s a technical process that requires experience and expertise. In fact, in Australia, you will need to hire a licensed professional to install and service your new air conditioning system.
To have our professional team install your air conditioner installation today, you can contact us here. If you’re still unsure on which unit to purchase, you can find some inspiration in our product selection. Additionally, you can read our blog, which is regularly updated on all things air conditioning.


