Quick Answer
Running a gas ducted heater in Melbourne costs $3–$6 per hour, an electric panel heater costs $0.50–$1.50 per hour, and a reverse cycle split system costs just $0.20–$0.80 per hour — making reverse cycle up to 10 times cheaper than electric bar heaters for the same warmth. For a typical Melbourne winter, expect to spend $400–$900 in heating bills depending on your system type and usage.
With Melbourne winters regularly dropping to 5–8°C overnight and gas prices rising sharply, understanding exactly what your heater costs to run has never been more important. This guide breaks down running costs for every major heater type used in Victorian homes, so you can compare them fairly and make smart decisions about heating this winter.
Heater Running Costs at a Glance
Running costs depend on three factors: the heater’s energy consumption (in kW or MJ/h), the energy tariff you’re paying, and how efficiently the heater converts energy to heat. Here are current Melbourne-specific costs based on 2026 VIC energy rates (electricity ~$0.35/kWh, natural gas ~$0.028/MJ).
| Heater Type | Power Draw | Running Cost/Hour | Cost Per Day (8h) | Efficiency |
|---|---|---|---|---|
| Reverse cycle split system | 1–2.5 kW input | $0.20–$0.90 | $1.60–$7.20 | 300–600% (COP 3–6) |
| Gas ducted heater | 20–36 MJ/h | $0.56–$1.01 | $4.50–$8.00 | 85–95% star-rated |
| Gas wall furnace/log fire | 15–25 MJ/h | $0.42–$0.70 | $3.35–$5.60 | 65–85% depending on age |
| Electric panel heater | 1–2.4 kW | $0.35–$0.84 | $2.80–$6.70 | 100% (direct conversion) |
| Electric bar/fan heater | 1.5–2.4 kW | $0.53–$0.84 | $4.20–$6.70 | 100% (but heats a small area) |
| Portable gas heater (LPG) | 5–9 MJ/h | $0.50–$0.90 | $4.00–$7.20 | 90%+ (but unflued = moisture) |
| Wood/pellet heater | Varies | $0.30–$0.80 (wood cost) | $2.40–$6.40 | 60–85% |
Gas Ducted Heating Running Costs
Gas ducted heating is the most common whole-home heating system in Melbourne, found in an estimated 60–70% of homes in the south-eastern suburbs. Modern units are rated 5–6 stars under the Australian Gas Appliance Energy Rating.
Annual Running Costs by Home Size
| Home Size | Heater Output Needed | Daily Cost (8h heating) | Annual Cost (May–Sep) |
|---|---|---|---|
| Small apartment/unit (under 80 m²) | 10–15 MJ/h | $2.80–$4.20 | $420–$630 |
| Medium house (100–200 m²) | 20–30 MJ/h | $5.60–$8.40 | $840–$1,260 |
| Large house (200–300 m²) | 30–45 MJ/h | $8.40–$12.60 | $1,260–$1,890 |
Reverse Cycle Air Conditioner Running Costs
Reverse cycle split systems are far and away the cheapest way to heat individual rooms in Melbourne. Because they move heat rather than generate it, they can deliver 3–6 units of heating for every unit of electricity consumed.
Cost by Room Size
| Room Size | Unit Capacity Needed | Hourly Running Cost | Cost Per Day (8h) |
|---|---|---|---|
| Small bedroom (under 20 m²) | 2.0–2.5 kW | $0.12–$0.25 | $0.95–$2.00 |
| Medium living room (25–35 m²) | 3.5–5.0 kW | $0.25–$0.45 | $2.00–$3.60 |
| Large open-plan (40–60 m²) | 6.0–8.0 kW | $0.40–$0.70 | $3.20–$5.60 |
Electric Heater Running Costs
Portable electric heaters (bar heaters, column heaters, fan heaters) are 100% efficient — all electricity becomes heat. But that also means they’re limited by your electricity tariff. At $0.35/kWh in Victoria, a 2,400W heater costs $0.84/hour — significantly more than a well-placed split system doing the same job.
Electric panel heaters are better suited to small rooms where you only need warmth for short periods (like a bathroom or study). Using a 2.4 kW bar heater as your primary heating in a Melbourne winter would cost roughly $1,600–$2,000 for the season — far more expensive than any ducted or split system.
What Affects Your Heating Bill Most
1. Insulation Quality
A well-insulated home requires far less heating energy to stay warm. Ceiling insulation alone can reduce heating requirements by 20–35%. Older homes in Dandenong, Pakenham and Frankston without upgraded insulation can lose heat twice as fast as a modern well-insulated home.
2. How You Use the Heater
The biggest variable is behaviour: heating to 24°C instead of 21°C, leaving heating on overnight, heating rooms you’re not in, or opening windows while the heater runs. Small changes in usage habits can cut your heating bill by 20–40%.
3. Age and Condition of Your System
A gas ducted heater more than 15 years old may have lost 10–20% efficiency. Dirty filters on split systems or ducted heaters can add 10–15% to running costs. An annual service before winter is the best investment you can make for a gas heater.
4. Gas vs Electricity Tariffs
Victoria has significant variation in energy tariff rates depending on your retailer and plan. Comparing energy plans via the Victorian Energy Compare website can reduce costs by $100–$300 per season without changing anything else.
Tips and Gotchas
- Service your gas heater before winter, not during. Heating technicians are fully booked June–August. Book your service in April or May to avoid paying emergency call-out rates and waiting weeks in the cold.
- Don’t heat an uninsulated home. Ceiling batts are the single best investment before a heating season — without them, much of your heat bill goes straight through the roof.
- Draught-proofing is cheaper than insulation. Sealing gaps around doors, skirting boards and floorboards typically costs under $200 DIY and can reduce heating bills by 10–20%.
- Set a timer, not a thermostat battle. Program your heater to drop to 16°C or off at midnight. You don’t need 22°C while sleeping under a duvet.
- Reverse cycle is not expensive to run. Many Melbourne homeowners still believe split systems are expensive to heat with. Modern inverter models cost half of what they cost to run in 2010.
- LPG portable heaters produce moisture. Unflued portable gas heaters produce water vapour as a combustion byproduct — this contributes to condensation and mould problems in poorly ventilated rooms.
- Compare the full winter, not just one bill. Compare your total gas or electricity spend May–September versus the same period last year. One bill fluctuates too much to draw conclusions.
- VEU rebates can slash your upgrade cost. The Victorian Energy Upgrades program offers discounts on heat pump systems, reverse cycle installation and insulation — check veu-registry.vic.gov.au before buying any new heating equipment.
Local Melbourne Resources
- Victorian Energy Compare — Compare electricity and gas plans to find the cheapest tariff for your area
- Victorian Energy Upgrades (VEU) — Check rebates on reverse cycle systems, insulation and heat pump upgrades
- Energy Rating Label Site — Look up any appliance’s annual energy consumption to compare running costs
- Victorian Building Authority — Licensing requirements for gas heater installation and service
- Bunnings — Panel heaters and portable electric options
- Reece Plumbing — Gas heater parts and hydronic heating supplies
Frequently Asked Questions
Is it cheaper to run gas ducted heating or a reverse cycle split system in Melbourne?
Reverse cycle split systems are significantly cheaper to run per room. A 6-star split system heating a 25m² living room costs around $0.25–$0.45/hour, while gas ducted running at full output costs $0.80–$1.20/hour when prorated across zones. If you only need to heat 2–3 rooms, reverse cycle wins on running costs every time.
How much does it cost to heat a Melbourne house for a full winter?
For a 150m² Melbourne house with 5-star gas ducted heating, expect $800–$1,200 for a full May–September winter. A reverse cycle multi-split system covering the same home would cost $300–$600 for the same period. Actual costs vary significantly with insulation quality and usage habits.
Why is my heating bill so high even with a new heater?
The most common causes are poor insulation, heating unused rooms with ducted systems, setting the thermostat above 21°C, and energy tariffs that have increased since last winter. An energy audit (available free through Sustainability Victoria) can identify exactly where you’re losing heat and money.
Can I claim any rebates on a new reverse cycle heater in Victoria?
Yes — the Victorian Energy Upgrades (VEU) program provides point-of-sale discounts on reverse cycle air conditioners installed by accredited providers. Discounts typically range from $200–$800 depending on the unit size. Check current offers at veu-registry.vic.gov.au or ask your installer about their VEU accreditation.
What’s the cheapest way to heat a single room in Melbourne?
A modern inverter reverse cycle split system is the cheapest option for heating a single room, at $0.15–$0.45/hour for most room sizes. Portable electric heaters should be a last resort — they cost 2–3 times more per hour to run than a properly sized split system.
