Ducted heating quotes in Melbourne come back at wildly different prices for what looks like the same job. One installer gives one figure, another says something completely different, and neither explains the gap. If you want to understand what is actually driving the cost of ducted heating in Melbourne (and what questions to ask before signing anything), this guide gives you the real picture, based on the work King and Sons carries out across Melbourne every week.
King and Sons Heating and Cooling installs, replaces, and services ducted heating systems across Melbourne. We do not publish set prices for ducted heating online because the cost varies significantly from property to property. What this guide does is explain why, so you can evaluate any ducted heating quote you receive in Melbourne with confidence.
What Determines the Cost of Ducted Heating in Melbourne?
There is no single price for ducted heating in Melbourne because no two properties are the same. The variables that determine what ducted heating installation or replacement costs in a Melbourne home are:
System capacity. The bigger the home and the higher the heat load, the larger the ducted heating system required. Getting capacity wrong is expensive for Melbourne homeowners. An undersized ducted heating system runs continuously and never reaches set temperature. An oversized system short-cycles, burns gas inefficiently, and wears out faster.
Star rating. Ducted heating systems in Melbourne are star-rated for gas efficiency. A 6-star ducted heating unit uses up to 35 percent less gas than a 3-star unit for the same heat output. That premium costs more upfront but pays back through lower gas bills across every Melbourne winter for the life of the system.
Zoning. A two-zone ducted heating setup for a Melbourne home (living areas and bedrooms controlled independently) adds to the installation cost but cuts running costs by heating only the rooms in use. A fully zoned ducted heating system with individual room control costs more again, with payback coming through reduced gas consumption over time.
Existing ductwork condition. Replacing a ducted heating unit in a Melbourne home where the ductwork is still sound is significantly cheaper than a full new installation. If existing ducts are degraded, poorly insulated, or collapsing, they need replacing too, which adds to the total ducted heating cost in Melbourne.
Property type and roof access. A clear, accessible roof cavity is quick to work in. Double-brick Melbourne homes, low-pitch roofs, multi-storey layouts, and heritage properties with restricted access all require more labour time and cost more. New builds in Melbourne are almost always cheaper to duct than established homes because the ductwork goes in before the ceiling plasterboard does.
What Does Ducted Heating Cost to Run in Melbourne?
Ducted heating running costs in Melbourne depend on the system’s star rating, how many zones are active, how many hours the system runs each day, and current gas tariffs.
What the data consistently shows across Melbourne is that the star rating has a meaningful impact on winter gas bills. A 6-star ducted heating system uses up to 35 percent less gas than a 3-star system for the same heat output. Zoning reduces ducted heating running costs further by conditioning only the areas of the Melbourne home in use rather than the whole property.
For a comparison of how ducted system running costs break down, see our published guide on ducted air conditioning costs in Melbourne which covers running costs for refrigerated ducted systems in detail.
Are There Government Rebates for Ducted Heating in Melbourne?
Yes. Victoria’s Victorian Energy Upgrades program provides financial incentives for replacing old inefficient ducted heating systems with high-efficiency models in Melbourne. For eligible ducted heating upgrades, the rebate typically ranges from $500 to $1,500 depending on system size, star rating, and the equipment being replaced.
Your ducted heating installer must be a VEU accredited provider to access the rebate. Ask this specifically before accepting any ducted heating quote in Melbourne. Not all installers hold accreditation. The rebate is applied at installation and reduces your upfront ducted heating cost.
For answers to other common questions about ducted heating in Melbourne, visit our FAQs page.
How Long Does Ducted Heating Last in Melbourne?
A well-maintained ducted heating system in Melbourne typically lasts 15 to 20 years. Systems that run without annual servicing or with degraded ductwork fail earlier and cost progressively more to run as efficiency drops year by year.
Annual ducted heating servicing is the single most effective thing a Melbourne homeowner can do to extend system life. Our service and maintenance team carries out ducted heating services across Melbourne including a heat exchanger inspection, burner check, filter clean, and system performance test.
After 15 years, the repair-versus-replace calculation for ducted heating in Melbourne starts tipping toward replacement, particularly for systems running below 4-star efficiency. A new 6-star ducted heating system with a VEU rebate applied often costs less over five years than continuing to run and repair an old inefficient unit in a Melbourne home.
Should You Repair or Replace Your Ducted Heating System in Melbourne?
Ducted heating repair is the right call in Melbourne when the system is under 12 years old, the fault is a single component, and a technician has confirmed the heat exchanger is intact.
Ducted heating replacement makes more sense for Melbourne homeowners when:
- The ducted heating system is over 15 years old with recurring faults
- The heat exchanger has cracked: this is a carbon monoxide safety issue and the system must not operate
- A technician advises that repair cost approaches the cost of a new ducted heating system in Melbourne
- A VEU rebate of $500 to $1,500 brings a new high-efficiency ducted heating system into budget
The heat exchanger situation deserves emphasis. A cracked heat exchanger in a Melbourne ducted heating system means the component separating combustion gases from your home’s airstream has failed. Carbon monoxide can enter the home. The system must not run. For a full breakdown of common ducted heating faults and what to expect from a repair, see our ducted heating repairs guide.
How Do You Get an Accurate Ducted Heating Quote in Melbourne?
A ducted heating quote without a site visit is not a quote. It is a number with no accountability behind it.
A proper ducted heating quote in Melbourne covers:
- The system recommended, its star rating, and why for your specific Melbourne property
- Whether existing ductwork is being reused or replaced, and why
- Zoning configuration and what that adds to the ducted heating cost
- Any gas supply upgrades required
- VEU rebate entitlement
- Warranty on parts and labour stated separately
If a Melbourne ducted heating installer cannot clearly answer those points before you sign anything, that tells you something important about how the job will be managed.
King and Sons provides free in-home assessments and upfront fixed pricing for ducted heating installation and replacement across Melbourne. Contact us or call 03 9124 9916. $0 call-out fee. We give you a clear price before we start any ducted heating work. 100% workmanship guarantee on all ducted heating systems installed across Melbourne.