When it's 2 degrees outside in Ballarat, it's tempting to come home and set the air con to 28. It won't warm the room any faster, and it will cost you more. A reverse-cycle split system heats at the same rate whatever temperature you set. A higher setting just means it keeps going longer and overshoots.
The sweet spot: 18 to 20 degrees
The Victorian Government's winter energy tips recommend setting your heater between 18 and 20 degrees, and note that each degree above that can add around 15% to your bill. On a cold Ballarat winter that adds up quickly.
Easy ways to keep warm for less
- Close doors. Only heat the rooms you're using. Heating an open hallway and stairwell is like heating the outdoors.
- Use the timer. Set the system to come on 20–30 minutes before you get up or get home, so you're not blasting a freezing house.
- Clean the filters. Dusty filters make the unit work harder. Most indoor units have filters you can rinse every few weeks during heavy use.
- Point the louvres down. Warm air rises. Directing airflow down helps heat the space you actually sit in.
- Draught-proof. Door snakes, window seals and heavy curtains make a big difference in older Ballarat homes.
- Leave it on Heat, not Auto. Auto mode can switch between heating and cooling as it chases the set temperature.
When your system just can't keep up
If you're following all of the above and the room still won't get warm, the unit may be too small for the space, low on refrigerant, or overdue for a service. That's common when a unit was sized for summer cooling rather than Ballarat winters. Our split system sizing guide explains what size you should have.
Thinking of replacing an old heater?
The Victorian Government recommends swapping old, inefficient gas heaters for reverse-cycle air conditioning. Discounts may be available through the Victorian Energy Upgrades program via accredited providers. Get a free quote for a new split system from us. Installs start from $1,499 + GST for a 2.5kW unit.
Frequently asked questions
What is the most efficient temperature for heating in winter?
The Victorian Government recommends setting your heater between 18 and 20 degrees. Each degree higher increases running costs.
Should I leave my split system on all day in winter?
In a well-insulated home it can be efficient to run it at a steady temperature rather than heating a cold house from scratch. Using the timer to warm the house before you get up or come home is a good middle ground.
Is a reverse-cycle split system cheaper to run than a gas heater?
A modern reverse-cycle split system is one of the most efficient ways to heat a room, and the Victorian Government recommends replacing old, inefficient gas heaters with reverse-cycle units. Actual savings depend on your tariffs and how you use it.
Need this sorted properly?
We're happy to talk it through over the phone or come out for a free, no-obligation quote across Ballarat and surrounds.
