Quick Answer
Gas heater installation in Melbourne costs $800–$8,000 depending on type: wall furnaces run $800–$2,500, ducted gas systems $3,500–$8,000, and flued heaters $1,500–$4,000. All gas work must be done by a licensed gasfitter — and you may qualify for Victorian Energy Upgrades (VEU) rebates worth $300–$1,000 on eligible systems.
Choosing and installing a gas heater in Melbourne is one of the smartest heating decisions a homeowner can make — gas is cheaper to run than reverse-cycle on cold winter mornings, and Melbourne’s winters routinely dip to 5–8°C overnight. This guide breaks down every cost you’ll face, from the unit itself to the gasfitter’s labour, flue installation, and gas connection fees.
Complete Gas Heater Installation Cost Breakdown
Gas Ducted Heating (Whole-Home)
Ducted gas heating is the most popular whole-home heating system in southeast Melbourne. A central unit heats air and distributes it through ceiling or floor vents.
| System Size | Supply Cost | Installation | Total Installed |
|---|---|---|---|
| Small (2-star, 3-bedroom home) | $1,800–$2,500 | $1,500–$2,000 | $3,300–$4,500 |
| Medium (4–5 star, 3–4 bedroom) | $2,200–$3,200 | $1,800–$2,500 | $4,000–$5,700 |
| Large (5–6 star, 4–5 bedroom) | $3,000–$4,500 | $2,000–$3,500 | $5,000–$8,000 |
| Zone control add-on | $300–$600 | $200–$400 | $500–$1,000 |
Gas Wall Furnace (Room Heater)
Wall furnaces heat a single room or open-plan living area. They’re quick to install and ideal for renters’ homes, granny flats, or supplementary heating.
| Heater Type | Supply Cost | Installation | Total Installed |
|---|---|---|---|
| Unflued gas wall heater (portable) | $300–$600 | N/A (portable) | $300–$600 |
| Flued gas wall heater (permanent) | $600–$1,200 | $400–$800 | $1,000–$2,000 |
| Gas panel heater (wall-mounted) | $500–$900 | $300–$600 | $800–$1,500 |
| Gas space heater (freestanding) | $800–$1,500 | $300–$500 | $1,100–$2,000 |
Gas Fireplace & Log Fire Installation
| Type | Supply Cost | Installation | Total Installed |
|---|---|---|---|
| Gas log fire (built-in firebox) | $2,500–$5,000 | $800–$2,000 | $3,300–$7,000 |
| Gas insert (retrofit into existing fireplace) | $1,500–$3,500 | $500–$1,500 | $2,000–$5,000 |
| Freestanding gas fire | $1,500–$3,000 | $400–$1,000 | $1,900–$4,000 |
Additional Installation Costs to Budget For
| Extra Cost Item | Typical Cost | Notes |
|---|---|---|
| New gas connection (no existing gas) | $500–$2,000 | AusNet/Jemena network connection fee + gasfitter work |
| Flue installation (new or extended) | $300–$1,200 | Depends on length and roof penetration |
| Ductwork (new run for ducted system) | $800–$3,000 | Per zone/section; existing ductwork may need cleaning |
| Return air filter box | $150–$400 | Mandatory on most ducted systems |
| Thermostat/controller upgrade | $100–$500 | Wi-Fi programmable thermostat adds $150–$350 |
| Asbestos removal (pre-1985 homes) | $500–$3,000 | Required if existing flue or ducts contain asbestos |
What Affects Gas Heater Installation Costs in Melbourne?
1. Type and Size of System
A portable gas panel heater needs almost no installation; a ducted system serving a 4-bedroom home requires a full day or more of work, ductwork runs through the ceiling, and a roof penetration for the flue.
2. Whether You Have Mains Gas
Southeast Melbourne suburbs like Pakenham, Officer, and parts of Cranbourne have newer estates where mains gas isn’t always available. Without it, you’ll need an LPG conversion (adds $200–$500 for the regulator and bottle setup) or consider an alternative like a heat pump.
3. Accessibility
Homes with limited subfloor or ceiling access take longer to run ductwork. A standard 3-bedroom home in Dandenong or Berwick with decent ceiling space costs less than a split-level home in Frankston with limited access.
4. Star Rating and Brand
A 5-star Brivis or Rinnai ducted heater costs more than a 2-star budget unit, but the running cost saving is real — approximately $100–$300 per year for a typical Melbourne household.
5. Labour Rates
Licensed gasfitters in Melbourne charge $100–$150/hour. A wall heater install might take 2–3 hours; a full ducted system typically takes 6–10 hours across one or two days.
DIY vs Professional Gas Heater Installation
Gas work in Victoria is strictly regulated. Under the Gas Safety Act 1997 and the Victorian Building Authority (VBA) framework, all gas installation, connection, and disconnection work must be performed by a licensed gasfitter. There are no exceptions for “simple” jobs like connecting a portable heater to a gas bayonet — if the bayonet itself needs to be installed or moved, that’s licensed work.
| Task | DIY Allowed? | Notes |
|---|---|---|
| Choosing the heater and buying it | Yes | Supply-only is fine; installation must be by a gasfitter |
| Plugging a portable heater into existing bayonet | Yes | If the bayonet is already installed and tested |
| Installing a gas bayonet outlet | No | Licensed gasfitter required |
| Connecting a flued heater | No | Licensed gasfitter + compliance certificate required |
| Ducted system installation | No | Licensed gasfitter; often also requires building permit |
Victorian Energy Upgrades (VEU) Rebates
Victoria’s VEU program provides rebates on approved high-efficiency gas heaters — typically 5-star or above ducted gas systems. Rebates are calculated based on energy savings and vary by household income and system size, but typically range from $300 to $1,000 off the installed price. Search for “VEU gas heating rebate” on the Victorian Government’s Sustainability Victoria website for current eligible products and registered retailers.
Signs You Need a New Gas Heater
| Problem | Likely Cause | Action |
|---|---|---|
| Heater won’t ignite | Faulty igniter or thermocouple | Service call; may be repair or replace depending on age |
| Yellow or orange flame (should be blue) | Incomplete combustion; carbon monoxide risk | Stop using immediately — call gasfitter |
| Uneven heating across rooms | Blocked ducts, failing zone motors | Duct inspection and clean |
| Heater over 15 years old | End of useful life; efficiency declining | Replace for energy savings and reliability |
| Gas bill increased significantly | Declining combustion efficiency | Service and consider replacement if over 12 years |
Top 10 Tips and Gotchas
- Get three quotes. Gas heater installation prices vary significantly between gasfitters in Melbourne. Three quotes takes one afternoon and can save $500–$1,500.
- Check the star rating. A 5-star system costs more upfront but saves $100–$300/year versus a 2-star unit. Over 10 years that’s more than the price difference.
- Ask about VEU rebates before signing. Some retailers handle the rebate paperwork; others don’t. Confirm who applies for it and when you’ll receive the discount.
- Existing ducts may be dirty. If you’re replacing an old ducted system, get the ducts cleaned ($150–$400) before commissioning the new unit — dirty ducts reduce efficiency and spread dust.
- Flued heaters need clearances. Wall-mounted flued heaters need specific clearances from furniture and curtains per AS/NZS 5601. Check with your gasfitter before deciding placement.
- LPG conversion adds cost. If reticulated gas isn’t available, LPG running costs are significantly higher than natural gas — factor this into your decision.
- Combination units save money. A combined gas ducted heating and evaporative cooling unit uses the same ductwork for both — cheaper than separate systems.
- Asbestos is common in pre-1985 homes. Old flexible duct insulation and some flue liners contain asbestos. Testing before replacement is essential — licensed asbestos removalists are required.
- Zone control is worth the extra cost. Adding zone control to a new ducted system costs $500–$1,000 but can reduce running costs by 30–40% in a multi-room home.
- Get a compliance certificate. After any gas installation, your gasfitter must issue a Certificate of Compliance. Keep it — you’ll need it if you sell the property.
Local Melbourne Resources
- VBA Licensed Gasfitter Search — verify any gasfitter’s licence before they start work
- Sustainability Victoria — VEU Program — current gas heater rebates and eligible products
- AusNet Services — Gas Connection — new gas connections in southeast Melbourne (Dandenong, Berwick, Pakenham)
- Reece Plumbing & Gas — gas fittings, regulators, and components for gasfitters
- Bunnings Warehouse — portable gas heaters and accessories (no installation required)
FAQ
How much does it cost to install a new ducted gas heater in Melbourne?
A new ducted gas heating system in Melbourne costs $3,500–$8,000 fully installed, including the unit, ductwork, flue, and gasfitter labour. The price depends on system size, star rating, and whether existing ductwork is reused. Zone control adds $500–$1,000 but can significantly reduce running costs.
Do I need a permit to install a gas heater in Melbourne?
Gas installation work requires a licensed gasfitter who issues a Certificate of Compliance — this is the legal record of the work. Large systems (ducted heating with new ductwork) may also require a building permit. Your gasfitter will advise; always ask upfront.
Can I get a rebate on a new gas heater in Victoria?
Yes — the Victorian Energy Upgrades (VEU) program offers rebates on approved high-efficiency gas heaters (typically 5-star or above ducted systems). Rebates typically range from $300–$1,000. Search Sustainability Victoria’s website for current eligible products and participating retailers.
How long does gas heater installation take?
A wall-mounted gas heater takes 2–4 hours. A ducted gas system installation typically takes 6–10 hours and may span two days if ductwork is being installed. New gas connection from the street adds 1–2 days depending on the network operator’s schedule.
Is gas heating cheaper to run than electric in Melbourne?
For whole-home heating in Melbourne, gas ducted heating typically costs 30–50% less to run than electric alternatives (reverse-cycle split systems covering the same area). However, modern high-efficiency reverse-cycle systems are narrowing the gap. Gas running costs depend on your tariff and system efficiency.
What brands of gas ducted heater are most popular in Melbourne?
The most commonly installed brands in Melbourne are Brivis (Australian-made, popular in southeast suburbs), Rinnai (reliable, good warranty support), and Braemar. All three have good service networks in the Dandenong, Berwick, Narre Warren, and Pakenham areas.
Final Thoughts
Gas heater installation in Melbourne ranges from $800 for a simple wall heater to $8,000 for a full ducted system. The key takeaways:
- All gas work requires a licensed gasfitter — no exceptions under Victorian law
- Check VEU rebate eligibility before purchasing — it can cut costs by $300–$1,000
- Ducted gas with zone control is the most cost-effective whole-home solution for southeast Melbourne winters
- Get at least three quotes and verify gasfitter licences on the VBA website
- Ask about asbestos testing in homes built before 1985
