Ducted Heating Cost in Sydney (2026)
In Sydney ducted heating cost depends on the fuel, gas or electric reverse-cycle, and the mild winter keeps the heating bill low either way.
Your ducted heating details
Your estimate sits within the typical range.
Your estimate sits within the typical range.
Where the money goes
Estimated breakdown for your configuration
Zoning lets you heat only the rooms in use, it adds upfront cost but cuts running cost and is worth it in larger homes.
Ways to save
- If the ducting is in good condition, replacing only the unit is much cheaper than a full new system.
- Zoning pays for itself over time in a larger home by not heating empty rooms.
How we estimate this
Ducted heating in Australia typically costs $3,500 to $18,000 in 2026 depending on home size and system. Replacing a unit where ducts exist is cheapest; a new ducted reverse-cycle system with zoning across a large home reaches the top.
Pricing reviewed: October 2026.
What a ducted heating costs in Sydney
Ducted heating cost in Sydney splits by fuel: a ducted gas system burns gas and is billed by the gas you use, while a reverse-cycle ducted system is electric and billed by the power it draws, and the two have very different running costs that move with gas and electricity prices. In Sydney the standout is that the mild winter keeps the heating bill low whichever fuel you choose, because the city rarely gets cold enough for long enough to run heating hard, so the annual heating cost is modest next to the southern capitals.
Because Sydney's winters are short and mild, many homes rely on the heating side of a reverse-cycle system they bought mainly for cooling, rather than installing a dedicated gas ducted system, so the heating cost is often just a small winter addition to the cooling bill. Where gas ducted exists, rising gas prices have narrowed its old running-cost advantage, and an efficient reverse-cycle system is now often cheaper to run. Zoning to heat only the rooms in use is the main saving. A terrace in the eastern suburbs near the salt air needs little heating, and the city's highest tariffs matter less when the hours are few.
Running the heating needs no licence, but the install is licensed by fuel: a ducted gas system must be installed by a licensed gas fitter, and a reverse-cycle system needs a licensed refrigeration or ARC-certified technician for the refrigerant and a licensed electrician for the wiring, under NSW Fair Trading. For a Sydney home, the clearest way to think about ducted heating cost is the fuel, gas or electric, times the few hours the mild winter demands.
Compare against the national picture: Ducted Heating Cost in Australia →
Ducted Heating Cost in other cities
Frequently asked questions
What determines ducted heating cost in Sydney?
The fuel: a ducted gas system is billed by the gas used, a reverse-cycle system by the power drawn, and the two have different running costs, though Sydney's mild winter keeps the heating bill low whichever fuel you choose.
Is gas or reverse-cycle cheaper to run in Sydney?
Rising gas prices have narrowed ducted gas's old advantage, so an efficient reverse-cycle system is now often cheaper to run in Sydney, and many homes simply use the heating side of a reverse-cycle system bought mainly for cooling.
Why is the Sydney heating bill low?
Because the mild winter rarely gets cold enough for long enough to run heating hard, so the annual heating cost is modest next to the southern capitals, and zoning to heat only the rooms in use trims it further in Sydney.
Do I need a licence for ducted heating in Sydney?
Not to run it, but the install is licensed by fuel: a ducted gas system needs a licensed gas fitter, and a reverse-cycle system a refrigeration or ARC-certified technician and a licensed electrician, under NSW Fair Trading.