As Australia braces for another winter, many households are scrutinising their energy bills, seeking the most economical way to stay warm. For Winter 2026, the data is clear: reverse cycle air conditioners are overwhelmingly the cheapest way to heat your Australian home, often costing less than half that of gas ducted heating and significantly less than traditional electric heaters per hour.
This guide breaks down the real running costs of gas and electric heating options, outlines current rebates, and offers practical advice to keep your home warm without breaking the bank.
The 2026 Energy Landscape: What’s Driving Prices?
Australia’s energy market continues to evolve, with wholesale costs playing a significant role in retail prices. For 2026-27, the Australian Energy Regulator (AER) and the Essential Services Commission (ESC) in Victoria have announced changes to default electricity offers.
“Electricity prices will fall for most households and small businesses on the Default Market Offer (DMO) from 1 July, with the AER today releasing its final prices for 2026-27.”
Across New South Wales and South East Queensland, residential Default Market Offer (DMO) prices are set to decrease, ranging from -3.4% to -7.7% for residential customers. In Victoria, the Victorian Default Offer (VDO) will see average annual bills for domestic customers fall by approximately 5%. However, South Australian residential DMO customers will experience a modest increase of 1.4%. These reductions are largely driven by lower wholesale electricity costs, influenced by increased wind and battery generation.
While these changes offer some relief, market offers from retailers often provide better value than default offers, making it crucial to compare plans regularly. For a comprehensive look at choosing the right plan, see our guide on Choosing Your Australian Energy Provider in 2026: A Definitive Guide.
Gas prices, while historically cheaper per unit of energy, have seen volatility. For example, Melbourne-specific natural gas rates are around ~$0.028/MJ for some calculations. It’s important to consider both the unit cost and the efficiency of your heating system.
Gas Heating in 2026: Costs and Considerations
Gas heating, particularly ducted systems, remains a popular choice for whole-home warmth due to its consistent heat delivery. However, its running costs are generally higher than efficient electric alternatives.
Types of Gas Heaters:
- Ducted Gas Heating: A central unit heats air and distributes it through vents. Installation costs for a new ducted gas heating system typically range from $3,000 to $10,000 for supply and installation, depending on home size and complexity.
- Gas Wall Furnaces/Log Fires: Smaller units for heating specific rooms. Installation of flued gas heaters can range from $1,200 to $5,000.
- Portable Gas Heaters (LPG): Offer flexibility but raise indoor air quality concerns if unflued.
Efficiency & Running Costs: Modern ducted gas heaters typically achieve 85-95% efficiency (star-rated). Despite this, running costs are higher than reverse cycle systems. For a typical Melbourne winter, running a gas ducted heater can cost $0.56–$1.01 per hour. Australia-wide, ducted gas heating generally costs $0.50–$0.80 per hour.
Electric Heating in 2026: Costs and Considerations
Electric heating options vary significantly in efficiency and running costs, with reverse cycle air conditioners standing out as the most economical.
Types of Electric Heaters:
- Reverse Cycle Air Conditioners (Heat Pumps): These units don’t generate heat directly but move heat from outside to inside, making them highly efficient. They offer both heating and cooling. Installation for a split system reverse cycle unit typically costs between $1,400-$3,000 (supply and install), while ducted reverse cycle systems can range from $8,000-$15,000.
- Electric Panel, Oil Column, or Fan Heaters: These directly convert electricity into heat, achieving 100% efficiency, but are far less cost-effective than heat pumps.
Efficiency & Running Costs: Reverse cycle air conditioners boast a Coefficient of Performance (COP) of 3 to 6, meaning they produce 3 to 6 units of heat for every 1 unit of electricity consumed. This makes them exceptionally efficient. Running a reverse cycle split system typically costs $0.25–$0.45 per hour to heat a room. Even larger ducted reverse cycle systems average $2.45–$3.45 per hour for whole-home heating.
In contrast, electric panel or bar heaters, while inexpensive to purchase, are among the most expensive to run, costing $0.50–$0.99 per hour for a similar heating output.
Running Cost Comparison: Gas vs. Electric (AUD/Hour, 2026)
Here’s a comparison of typical hourly running costs for heating a standard living room in Australia, based on 2026 energy rates and average efficiencies:
| Heater Type | Efficiency (Approx.) | Typical Running Cost (AUD/Hour) |
|---|---|---|
| Reverse Cycle Aircon | 300-600% (COP 3-6) | $0.25 – $0.45 |
| Ducted Gas Heating | 85-95% | $0.50 – $0.80 |
| Electric Panel/Oil Heater | 100% | $0.50 – $0.99 |
This table clearly illustrates why reverse cycle air conditioners are the most economical choice for heating. For an entire winter (e.g., 6 hours/night for 91 nights in NSW), a reverse cycle air conditioner could cost around $119, compared to $474 for a plug-in electric heater doing the same job.
Energy Rebates and Concessions for Winter 2026
While the universal federal energy bill relief of 2024-25 and its 2025 extension have ended, targeted state-based concessions remain active for eligible households in 2026. These can significantly reduce your overall energy costs.
- New South Wales: Eligible households can access the Low Income Household Rebate (up to $285/year), Family Energy Rebate (up to $180/year), and Seniors Energy Rebate ($200/year).
- Victoria: Concession card holders may receive ongoing electricity (
$174/year) and gas ($107/year) rebates. The Victorian Energy Upgrades (VEU) program offers significant point-of-sale discounts for energy-efficient upgrades, including up to $5,530 off a new reverse cycle air conditioning system when replacing an old gas heater. - Queensland: Eligible cardholders can claim the Electricity Rebate ($399.47/year) and the Reticulated Natural Gas Rebate ($96.45/year). The Home Energy Emergency Assistance Scheme offers up to $720 every two years for households facing short-term financial hardship.
- South Australia: The Cost of Living Concession and Energy Bill Concession are available for eligible low-income households and cardholders.
- ACT: The Electricity, Gas and Water Rebate (formerly Utilities Concession) is set at $800 per year for 2025-26.
For a comprehensive overview of state and territory support, refer to our guide: Australian Energy Rebates in 2026: Your State-by-State Guide After Federal Relief Ends.
Additionally, federal Small-scale Technology Certificates (STCs) still provide a discount on solar panel installations (e.g., around $1,600-$2,000 off a 6.6kW system in 2026). The federal Cheaper Home Batteries Program offers approximately $250 per usable kWh for the first 14 kWh of battery capacity, translating to around $2,500 off a 10 kWh system.
Beyond the Heater: Optimising Your Home for Winter Savings
The most efficient heater can only do so much in an uninsulated, draughty home. Improving your home’s thermal envelope is crucial for long-term savings.
- Insulation: Upgrading ceiling, wall, and floor insulation prevents heat from escaping. Victoria’s VEU program offers $500–$1,200 off ceiling insulation, with some low-income households qualifying for $0 upfront. For more details, see: Unlock $1,500+ Winter Savings: Your 2026 Australian Insulation & Draught Proofing Rebate Guide.
- Draught Proofing: Sealing gaps around windows and doors, and blocking unused chimneys, can reduce heat loss by up to 25%.
- Smart Thermostats: Programming your heating to 18-20°C can save approximately 10% on costs for every degree lower.
- Solar Panels & Batteries: While an upfront investment, solar PV can drastically reduce electricity bills, and pairing it with a home battery can further maximise self-consumption, especially during peak heating times. Rebates are available for both solar and batteries.
Bottom Line
For Winter 2026, the reverse cycle air conditioner (heat pump) is unequivocally the cheapest way to heat your Australian home on an hourly running cost basis, often at less than half the cost of gas heating and a quarter of inefficient electric heaters. While initial installation costs can be higher for ducted systems, the long-term running cost savings make them a superior investment. Combine this with readily available state government rebates for energy-efficient upgrades, and a well-insulated, draught-proofed home, and you can significantly reduce your winter energy expenditure. Always compare energy plans to ensure you’re on the best deal for your circumstances.