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Ducted Air Conditioning Installation Sydney
Ducted is the move when you want the whole house cool without a head on every wall. One central unit, hidden in the roof space, pushing conditioned air through ceiling vents to every room you want covered. Set it once and the whole place holds an even temperature, no chasing the cold spot from room to room.
Crown Air installs ducted systems across Sydney for new builds, knock-down rebuilds, and upgrades on older homes that have outgrown their splits. We're authorised dealers for ActronAir and Hitachi, two of the best brands you can put in an Aussie home, and we'll spec the system properly to your home's layout, ceiling space, and how you actually use the rooms. Get the sizing wrong and you either freeze in the lounge or never quite cool the back bedrooms, so we take the time to measure up properly before we quote.
Every install includes zoning so you're only cooling the rooms you're using, reverse cycle so it does heating in winter too, and a proper handover where we walk you through how to run it. We've been doing this across Sydney since 2009 and most of our work comes from word of mouth. Give us a call for a free in-home quote.
Split System
Perfect for cooling individual rooms or smaller spaces. We supply and install all the major brands with clean cable runs and a tidy finish.
Ducted Air Conditioning
Whole-home comfort with discreet ceiling vents. We design and install ducted systems sized properly for your home, not just whatever fits.
Multi Split System
Cool multiple rooms off the one outdoor unit. Less clutter outside, independent control inside, and one clean install.
Ducted Aircon Installation Services Sydney
Ducted aircon specialists in Sydney.
What to know before installing ducted in Sydney
Ducted is a bigger commitment than a split, both in cost and in install complexity, so it pays to go in with eyes open. Here’s the practical stuff worth knowing before you start getting quotes.
Sizing matters more than brand
The single biggest mistake we see in older Sydney homes is a system that’s the wrong size for the space. An undersized unit struggles to hit temperature on hot days and runs constantly trying to keep up. An oversized one cools the rooms too quickly, switches off, then cycles back on a few minutes later, which chews through power and wears the compressor out faster.
A proper sizing calculation takes into account ceiling height, insulation, window orientation, the colour of your roof, how many people live in the home, and how the rooms are used. It’s not a guess based on floor area. Anyone who quotes you a system size over the phone without seeing the home is winging it.
Zoning is what makes ducted worth it
Without zoning, ducted means you’re cooling the whole house every time you turn it on. With zoning, you can cool the bedrooms at night and the living areas during the day, which keeps your power bill down and helps the system last longer. Most modern ducted setups include zoning as standard, but the way it’s configured matters. A four-zone setup in a five-bedroom home is going to feel limiting after a year or two.
Roof space is the silent dealbreaker
Ducted systems need somewhere to run the ducts, and most pitched-roof Sydney homes have plenty of room. Tight ceiling cavities, flat roofs, or homes with a lot of structural beams can complicate the install. It’s not usually a no, but it might mean bulkheads, a smaller indoor unit, or running ducts through cupboards. A site inspection is the only way to know for sure.
Reverse cycle pulls double duty
Almost every modern ducted system installed in Sydney is reverse cycle, meaning it heats as well as cools. This usually surprises people who think of ducted as a “summer thing”. Reverse cycle is one of the cheapest ways to heat a home, much cheaper than gas or electric heaters per hour of run time, so a ducted install effectively replaces your heating system too.
Sydney’s climate is harder on systems than people think
We get hot summers, cool winters, salty coastal air east of the M5, and dust and bushfire smoke depending on the season. Systems built for Australian conditions, ActronAir being the obvious one, hold up better long-term. It’s worth paying the extra few hundred dollars upfront for a unit that’s going to last 12-15 years instead of 8.
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How much does ducted air conditioning cost to install in Sydney?
For most Sydney homes, ducted installs start around $8,000 and can run up to $15,000+ depending on the size of the system, the number of zones, and how complex the install is. A small three-bedroom single-storey is at the lower end. A double-storey home with five or six zones is at the higher end. Roof access, existing wiring, and the brand you choose all play a part too. We give a fixed quote after the in-home assessment, so there are no surprises later.
How long does it take to install a ducted system?
Most ducted installs take one to two days. A straightforward single-storey home can usually be done in a day, while double-storey or larger homes with more zones might run into a second day. We’ll give you a clear timeline after we’ve assessed your home, and we work cleanly so you can keep using the rest of the house while we’re on the tools.
Will ducted air conditioning work in an existing home, or just new builds?
Both. New builds are easier because we can plan the duct runs before the ceilings go in, but plenty of older Sydney homes have ducted systems retrofitted every year. The main thing we look at is roof space, since the ducts need somewhere to run. Most pitched-roof homes have plenty of room. If you’ve got a flat roof or a tight ceiling cavity, there are still options, we just need to take a proper look first.
ActronAir or Hitachi, which brand is better?
Honestly, both are excellent and we install both regularly. ActronAir is Australian-made and built specifically for our climate, which matters when you’re running a system through 40-degree summers. Hitachi has a strong reputation for quiet operation and energy efficiency. The right pick usually comes down to your home, your budget, and what features matter most to you. We’ll give you a straight comparison during the assessment rather than just pushing whichever brand has the best margin.
How often does a ducted system need servicing?
Once a year is the standard for residential. The filter should be cleaned every couple of months during heavy use, which you can do yourself, but the full service (coils, refrigerant, electrical, drains, zone motors) is best left to a qualified technician annually. Skipping services is the fastest way to cut years off the system’s life and bump up your power bills, so it’s worth keeping on top of.
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Advice and best practice from our own team
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