How Much Does Aircon Installation Cost in Victoria? (2026)

Aircon installation in Victoria costs $1,200 to $5,000 for a single split system and $9,000 to $20,000 for a ducted reverse cycle system covering a whole house. A multi-head split running two to three rooms usually lands between $4,000 and $8,500. Those figures cover the unit and the labour to fit it. QuickAir is headquartered in Victoria, and across more than 20,000 customers served nationally we’ve found three things move a Victorian quote most: the type of system, how complex the install is, and whether the job qualifies for a state discount.

That last one matters more here than anywhere else in the country. The Victorian Energy Upgrades program takes $630 to $1,610 off a room reverse cycle system that replaces a gas heater, and up to $5,530 off a ducted reverse cycle system replacing ducted gas heating. On a big job, that discount can be worth more than an entire bedroom split.

Below is what each system type actually costs in Victoria, what sits inside a quote, the rebates worth claiming before you sign anything, and how to work out the number for your own home.

Air conditioning prices in Victoria by system type

The system you choose sets the ballpark. Everything else adjusts it. The table below shows typical installed costs across Melbourne and regional Victoria, covering both the unit and the labour, before any rebate is applied.

Two homes on the same street can pay different prices for the same unit once access, switchboard condition and pipe runs are counted. Treat these as ranges to budget against, not quotes.

How much does it cost to install a split system in Victoria?

A single split system costs $1,200 to $5,000 installed in Victoria, depending on the size of the room it needs to condition. A small bedroom unit starts near $1,200. A 5 kW living area unit generally sits between $1,900 and $3,600. A 7 to 9 kW unit for a large open plan space runs up to about $5,000.

The two halves of that price move independently. CHOICE prices split system units at $600 to $5,500 before installation, and puts an installer’s fee at $600 to $800 or more for a standard job. Solar Victoria gives a useful Victorian benchmark, putting the average installed cost of a 3.5 kW unit at around $1,700 for a modest living room.

Why a back-to-back install is the cheapest option

A back-to-back install puts the indoor head and the outdoor unit on opposite sides of the same wall. The pipe run is short, there’s no cavity chasing and no roof work, which is why it sits at the bottom of every price band above.

Costs climb as soon as the outdoor unit has to go somewhere else. Around a corner, up a level, or ten metres down a side path all add pipe, labour hours and sometimes a second person on site.

Why Victorian homes usually need a bigger unit than they expect

Most of Victoria needs heating far more than it needs cooling, so a split system sized only for a hot February afternoon will struggle on a July morning in Ballarat. It’s the sizing mistake we correct most often in this state.

Sizing to the heating load usually means going up one model. That costs a few hundred dollars more upfront and often removes the need for a separate heater in that room.

What does a multi-head split system cost?

A multi-head split runs two or more indoor heads from a single outdoor unit and typically costs $4,000 to $8,500 installed in Victoria for two to three rooms. Each additional indoor head adds roughly $1,000 to $1,500, because each one needs its own pipe run, drain and mounting work.

Multi-head suits Victorian homes where the roof cavity is too tight or too shallow for ductwork, which rules out a lot of older weatherboards and single-storey period homes. It also suits households that only want three or four rooms conditioned rather than the whole house.

How much does ducted air conditioning cost in Victoria?

A ducted reverse cycle system costs $9,000 to $20,000 installed in Victoria. A three-bedroom home usually falls between $9,000 and $13,000. A four to five bedroom home with proper zoning sits closer to $13,000 to $20,000. CHOICE puts the national floor at $9,000 fully installed, rising past $15,000 on larger houses.

Ducted quotes vary more than any other system, because there are more variables to price: the capacity of the unit, the length and layout of the duct runs, the number of zones, and how workable the roof space is. A tight cavity with limited access adds hours to every stage of the job.

What changes if you’re replacing a ducted gas heater?

A large share of Victorian homes still heat with a ducted gas heater, and that changes two things when you switch to ducted reverse cycle. The existing ductwork can sometimes be reused if it’s in good condition and correctly sized, which takes thousands off the job. The changeover also qualifies for the largest discount available under the state program, covered further down.

If you’re weighing the two whole-home options against each other, our guide to ducted versus split system air conditioning goes through the running cost side in more detail.

Is evaporative cooling cheaper to install in Victoria?

Yes. Ducted evaporative cooling costs $2,800 to $5,200 installed in Victoria, which is well under a ducted reverse cycle system covering the same floor area. It pulls outside air through wet pads, which Sustainability Victoria notes cools the air by around 10°C in good conditions, and it draws far less electricity than a refrigerated system.

The trade-offs are real and worth understanding before you commit.

Does evaporative cooling work well in Melbourne?

It works, but less consistently than it does inland. Sustainability Victoria puts Melbourne’s average summer humidity at 40 to 50 percent, against 20 to 30 percent in Mildura, and evaporative cooling loses effectiveness as humidity climbs because the water evaporates more slowly from the pads.

For a household with good heating already in place that wants affordable summer cooling, evaporative is the cheaper way in. For a household replacing an ageing gas heater anyway, ducted reverse cycle usually wins once the discount is counted.

What is included in an aircon installation quote?

An installed price is the unit plus the labour and materials to fit it legally and safely. Knowing how that splits helps you read a quote properly and spot where a low headline number is leaving something out.

Anyone handling refrigerant in Australia needs a current Australian Refrigeration Council licence, so a general handyman can’t legally do this work. You can verify any installer through the council’s licence check tool before they start. Every QuickAir technician holds that licence along with the Registered Electrical Contractor licence the electrical side legally requires in Victoria, and you can see our licences and insurance in full.

What makes one Victorian installation quote higher than another?

Once the system type is settled, these are the factors that move the number most in Victorian homes:

• Access and complexity. A back-to-back install on a single-storey home is the cheapest scenario. Long pipe runs, second-storey work, tight roof cavities and awkward outdoor unit placement all add labour hours.
• Switchboard condition. A new air conditioner needs its own circuit. Plenty of older Melbourne homes still run original switchboards with no spare capacity, and an upgrade adds roughly $300 to $800 or more.
• Heating capacity. Sizing to carry a Victorian winter usually means a larger unit than cooling alone would need. It costs more upfront and saves you buying a second appliance.
• Existing ductwork. Reusing sound ductwork from a ducted gas heater can take thousands off a ducted reverse cycle changeover. Ductwork that’s undersized, perished or poorly sealed has to be replaced.
• Old system removal. Decommissioning a gas heater or pulling out a dead split is included in some quotes and charged separately in others. Confirm which before you compare two prices.
• Timing. A January heatwave and the first genuine cold snap are the two busiest windows of the Victorian year. Booking outside them usually means a better price and quicker availability.

What rebates can Victorian households claim on a new air conditioner?

Victorian households can claim a discount through the Victorian Energy Upgrades program when they install an approved high-efficiency reverse cycle air conditioner. The state lists discounts of $630 to $1,610 for a room system replacing a non-ducted gas heater, up to $840 where it replaces an electric resistance heater, and up to $5,530 for a 22.4 kW ducted system replacing ducted gas heating. It also estimates household bill savings of up to $460 a year on a room system and up to $1,140 a year on a ducted replacement.

Here’s what that looks like against real installed prices.

Four conditions decide whether a job qualifies:

• The product must be approved under the program and carry a minimum five-year warranty for residential installs.
• If you’re replacing an existing system, that system must be more than two years old.
• The work has to go through an accredited provider, so confirm accreditation before you accept any quote.
• Discount amounts are reviewed periodically, so check the current figures on the official program page before you budget around them.

The practical advice we give Victorian households is to sort the rebate question before you shortlist units, not after. An unapproved model at a slightly lower sticker price can end up costing more than an approved one once the discount is off the table.

What size air conditioner do you need for a Victorian home?

Sizing drives both the purchase price and the running cost, and getting it wrong hurts in both directions. An undersized system never reaches temperature on a cold Victorian morning. An oversized system costs more to buy, short-cycles, and can cost more to run. Solar Victoria publishes this guide for room reverse cycle systems.

Ceiling height, window orientation, glazing and insulation all shift the answer, sometimes by a full model size. A room with a 3.2 metre ceiling and west-facing glass needs more capacity than a same-sized room with standard ceilings facing south. For a fuller breakdown, we’ve written a separate guide on what size air conditioner you need.

Can you supply your own unit and pay for installation only?

Yes. Labour-only installation of a split system you’ve bought yourself typically costs $650 to $1,500 in Victoria for a straightforward back-to-back job. It looks like the cheap route, and sometimes it is.

Two things usually catch people out. The first is warranty responsibility. When a fault appears and the unit came from one place and the install from another, it takes longer to sort out who fixes it. The second is the rebate. The Victorian Energy Upgrades discount requires an approved product installed through an accredited provider, so buying the unit separately can cost you more in lost discount than you saved on the box.

When is the cheapest time to install air conditioning in Victoria?

Autumn and spring. Demand for installation in Victoria spikes twice a year, in the first serious heatwave of summer and the first cold week of winter, and both availability and price reflect it. Booking an install in March, April, September or October generally means a better price and a much shorter wait.

There’s a practical angle too. If your gas heater is near the end of its life, replacing it in a shoulder season means you’re not making the decision under pressure with no heat in the house. That’s when people overpay.

How to compare installation quotes in Victoria

The ranges above get you to a budget. The accurate number comes from someone standing in your home. When you compare quotes, check each one covers the same scope:

• The unit, including make, model and capacity in kW
• Installation labour, with the pipe run length stated
• All materials and fittings
• Any electrical work, including a switchboard upgrade if one is needed
• Removal and disposal of the old system
• Compliance certificates
• The Victorian Energy Upgrades discount, shown as a separate line

A quote that leaves out the switchboard upgrade or the disposal fee looks cheaper on paper and costs more by the end of the job. When we assess a Victorian home, our technician looks at the rooms, the unit placement, the pipe run, the roof space and the switchboard, then gives you a fixed written price. Our pricing is published upfront, and the price you see is the price you pay, with any additional work quoted and approved by you first.

Budget for upkeep as well. An annual service and maintenance visit is worth more in Victoria than in a cooling-only state, because a reverse cycle system here works hard across both seasons rather than sitting idle for six months.

Frequently asked questions

How much does a split system installation cost in Melbourne?

A single split system costs $1,200 to $5,000 installed in Melbourne, covering the unit and the labour. Labour on its own, if you supply the unit, runs $650 to $1,500 for a standard back-to-back install. We install air conditioning across Melbourne and the surrounding suburbs.

Do you need an electrician to install an air conditioner in Victoria?

Yes. The electrical connection for a fixed air conditioner must be done by a licensed electrician, and the refrigerant side requires an Australian Refrigeration Council licence. In Victoria, the electrical work also needs a Certificate of Electrical Safety issued on completion.

How long does a split system installation take?

A standard back-to-back split system install usually takes three to five hours. Longer pipe runs, second-storey work or a switchboard upgrade can push it to a full day, and a ducted system typically takes two to three days.

Is a multi-head split cheaper than ducted air conditioning?

Usually yes. A multi-head split covering three rooms costs $4,000 to $8,500 installed in Victoria, against $9,000 or more for a ducted system covering a whole house. Ducted becomes better value once you’re conditioning more than about four rooms, and it’s the option that qualifies for the larger state discount.

How quickly can you get an installation quote in Melbourne?

Most on-site installation quotes in Melbourne can be booked same day or next morning, including through summer. The assessment takes about an hour and you finish with a fixed written price rather than an estimate to be confirmed later.

Does replacing a gas heater with reverse cycle actually save money in Victoria?

The state estimates bill savings of up to $460 a year for a room reverse cycle system and up to $1,140 a year for a ducted replacement, on top of the upfront discount. The saving depends on your gas and electricity rates, how much you run the system, and whether you have solar.

Get a fixed price for your Victorian install

Working out a ballpark from the ranges above is a sensible first step. The accurate number comes from an on-site look at your rooms, unit placement, pipe run, roof space and switchboard. You can book an installation quote for a fixed $149, or $139 if you have booked with us before, credited against the job if you go ahead with the install. Most bookings are same day or next morning. Our licensed technicians cover Melbourne, Geelong, Ballarat, Bendigo and regional Victoria, and every install is backed by our 100% workmanship guarantee. Book online or call us on 1300 730 896.