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Gas Ducted Heating in Melbourne

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Gas ducted heating warms your whole home from one central gas heater, pushing clean warm air through a network of ducts to vents in every room. For Melbourne homes already connected to natural gas, it is one of the fastest, most cost-effective ways to stay warm right through a cold winter. At BM Heating & Cooling we design, supply, install and replace gas ducted heating across Melbourne, sizing the heater and ductwork to your floor plan and fitting trusted brands like Brivis, Braemar and Bonaire. Every job is carried out by licensed gas fitters, tested for safe operation and backed by our own workmanship guarantee.

Gas Ducted Heating for Melbourne Homes


Gas ducted heating is whole-of-home central heating. A single gas heater draws in cool return air, warms it over a heat exchanger and sends it out through insulated ducts to outlets in each room, all controlled from one thermostat. It is the most popular way to heat a home in Melbourne, largely because so much of the city's housing is already on natural gas and the warmth comes through fast on a cold morning.

The heater itself sits in one of two places. An internal unit goes in the roof space and feeds ceiling vents, which suits most homes with roof access. An external unit sits outside on a slab and feeds floor vents through the subfloor, which suits homes on stumps or without ceiling space. We work out which layout fits your home at the quote.

  • Whole-home warmth: even heat across living areas and bedrooms from one system.
  • Fast heat-up: gas ducted brings a cold home up to temperature quickly.
  • Designed for your home: we size the heater and lay out the ducts around your floor plan, roof space or subfloor.
Installer fitting insulated ducting in a roof space for a gas ducted heating system in Melbourne

How Gas Ducted Heating Works


Gas ducted heating makes heat by burning natural gas cleanly and safely inside a sealed heat exchanger, then moving that heat around your home with a fan and ducts. The burner never touches the air you breathe, so the warm air stays clean.

The system has a few main parts working together:

  • Gas heater unit: the central heater in the roof space or outside, with the gas burner and combustion chamber.
  • Heat exchanger: a sealed chamber that transfers heat from the burner to the air without mixing the two.
  • Return air grille: draws cool air from the home back to the heater to be warmed again.
  • Insulated ducts and vents: carry the warm air to slim ceiling or floor outlets in each room.
  • Thermostat or controller: a wall pad or app that sets the temperature and cycles the heater on and off.

Zoning, Star Ratings & Running Costs


How much a gas ducted system costs to run comes down to two things: how you control it, and the star rating of the heater.

Zoning: a zoned system lets you heat only the rooms you are using, such as the living areas by day and the bedrooms at night, instead of warming the whole house at once. Heaters with a modulating gas valve go a step further and wind their output up and down to hold a steady temperature rather than switching hard on and off.

Star ratings: gas ducted heaters are rated on an Australian scale up to a maximum of 6 stars. As a rule of thumb, each extra star means around 10 percent less gas for the same heat, so a 6-star unit is noticeably cheaper to run than an older 3-star one over a Melbourne winter.

Conventional vs condensing: the most efficient 6-star models are condensing, meaning they add a second heat exchanger to squeeze extra heat out of the flue gases. Conventional (non-condensing) units usually sit around 3 to 5 stars and cost less upfront. We explain the trade-off so you can pick what suits your budget and how long you plan to stay.

Honest running-cost note: for a home already on gas, gas ducted heating is a fast, cost-effective way to warm the whole home. Efficient reverse cycle heat pumps have narrowed that gap as gas prices rise, so we give you a straight comparison for your home rather than a sales pitch.

Warm Melbourne living room in winter with a gas ducted heating floor vent

Benefits of Gas Ducted Heating


Fast Whole-Home Warmth

One heater warms every room through the ducts, and gas brings a cold home up to temperature quickly on a frosty Melbourne morning.

Made for Melbourne Winters

Gas ducted heating handles Melbourne's cold, damp winters with strong, consistent heat right across the home.

Zoned Control

Heat only the rooms you are using, and choose a modulating heater that eases its output up and down to hold a steady temperature.

High Star-Rating Efficiency

Modern units run up to 6 stars, with condensing models using around 10 percent less gas per star than older heaters.

Works With Your Gas

For homes already connected to natural gas, a like-for-like gas ducted system is a straightforward, cost-effective upgrade or replacement.

Add-On Cooling Ready

Pair your heating with add-on cooling such as evaporative or refrigerated cooling so your home stays comfortable all year round.

Choosing the Right Gas Ducted Heater


The right heater depends on the size and layout of your home, whether it is a new install or a replacement, and how much you want to spend upfront versus save on gas each winter. We size the unit to your home with a proper heat-load assessment rather than guesswork, then match it to a quality brand.

Star Ratings Explained

Australian gas ducted heaters are rated from 1 up to 6 stars. The more stars, the less gas the heater uses for the same amount of warmth, so the rating is a direct guide to running cost. Each additional star saves roughly 10 percent on gas.

Six-star heaters are condensing units, which capture extra heat from the flue and need a small condensate drain. Non-condensing heaters around 3 to 5 stars cost less to buy and are simpler to fit. We confirm the right choice for your home and budget at your free quote.

Our Installation & Replacement Process


1. Free onsite assessment: we visit your home, check your roof space or subfloor, gas supply and layout, and work out the right heater size and outlet positions for the way you live.

2. System recommendation & quote: we recommend a heater and star rating to suit your home and budget, plan the duct runs and any zoning, and give you a clear, itemised quote.

3. Licensed installation: our licensed gas fitters install the heater, run the ducts and outlets, connect the gas safely and set up the controller, protecting your home and cleaning up as we go. A straightforward changeover is often done in a day.

4. Testing & handover: we commission the system, carry out a carbon monoxide safety test, balance the airflow and show you how to run the heater before we leave.

Repair or Replace Your Old Gas Ducted Heater


If your existing gas ducted heater is playing up, replacing it is not always the answer. As a guide, a newer unit with available parts is usually worth repairing, while a heater beyond roughly 10 to 15 years, running below 3-star efficiency, or failing a heat exchanger or carbon monoxide check is better replaced. We give you an honest assessment either way, and if a new heater makes sense we fit a more efficient unit that costs less to run.

Areas We Serve Across Melbourne


BM Heating & Cooling installs and replaces gas ducted heating right across Melbourne. From our base in the northern suburbs we regularly work through Preston, Reservoir, Coburg, Brunswick, Bundoora, Heidelberg, Ivanhoe, Northcote and Thornbury, and out to Melton and the wider metro area. See our full list of service areas or explore related options like reverse cycle ducted systems and evaporative cooling.

External gas ducted heater unit installed beside a Melbourne home

Trusted Gas Ducted Heating Brands


The brand and star rating of the heater make a real difference to how efficiently it runs and how long it lasts. We fit trusted Australian gas ducted brands and match the unit to your home and budget rather than pushing one option.

We install and replace Brivis (part of Rinnai), whose StarPro range spans 4, 5 and 6 star, with the SP6 a condensing 6-star model and the SP4 and SP5 efficient non-condensing units, plus the weatherproof Buffalo external heater for replacements. We also fit Braemar (made in Australia by Seeley International) and Bonaire (Climate Technologies), both with high-efficiency ducted ranges.

Every install is carried out by licensed gas fitters and backed by manufacturer warranties and our own workmanship guarantee.

Gas Ducted Heating FAQs


Return air is drawn in through a central grille and passed over a heat exchanger that is warmed by a gas burner. A fan then pushes the warm air through insulated ducts to vents in each room, and a thermostat cycles the burner and fan on and off to hold your set temperature.

Gas ducted heaters are rated on an Australian scale up to a maximum of 6 stars. Each extra star means roughly 10 percent less gas used for the same heat, so a higher star rating costs less to run. The most efficient 6-star models use condensing technology.

A conventional (non-condensing) heater vents its flue gases while still hot and typically rates around 3 to 5 stars. A condensing heater adds a second heat exchanger that captures extra heat from the flue gases to reach 6 stars, and it needs a condensate drain. We help you weigh the higher upfront cost against the gas savings at your quote.

Yes. Gas ducted heating handles winter, and you can pair it with add-on cooling such as evaporative cooling or a refrigerated system so your home is comfortable all year. We can plan this as part of the design.

A gas ducted heater should be serviced regularly by a licensed gas fitter, including a carbon monoxide test, which Energy Safe Victoria recommends for all gas heaters. Regular servicing keeps it running safely and efficiently and protects your warranty.

As a rule of thumb, repair a newer unit where parts are available, and consider replacement once a heater is beyond roughly 10 to 15 years, is below 3-star efficiency, or fails a heat exchanger or carbon monoxide check. We give you an honest assessment rather than automatically selling a new unit.

For homes already connected to natural gas, gas ducted heating has long been a cost-effective way to warm the whole home quickly. Efficient reverse cycle heat pumps have closed much of that gap as gas prices rise, so the best choice depends on your gas connection, tariffs and the star rating of the unit. We give you a straight comparison for your home.

In most cases, yes, provided the home is connected to natural gas. We assess your roof space or subfloor, ceiling cavity and layout during the onsite quote and design the heater size and duct run to suit your existing home.

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