5.0 ★ from 42 Google reviews
Multi Head Air Conditioners Across the Central Coast: One Outdoor Unit, Every Room Controlled
Get multi-head systems supplied, installed, and serviced by licensed local technicians with 10+ years on the tools. Honest advice on whether multi-head, separate splits, or ducted suits your home best.
One outdoor unit, up to five indoor heads
Authorised Hitachi and Temperzone installer
Fixed-price quotes, no hidden extras
Licensed and insured in NSW
★★★★★
"If I could add more stars I would. Gary took the time to listen and offered alternatives to consider without being pushy. Great service, advice, and a friendly local guy."
- Pip H.
Too Many Rooms for a Split, No Roof Space for Ducted
Some homes sit in the gap: more rooms than one split can handle, but no roof space, budget, or appetite for full ducted. That’s the home a multi-head system is built for.
A multi-head (or multi-split) system runs several indoor units off a single outdoor unit. Each room gets its own head and its own temperature control, and outside there’s one compressor instead of a row of them. Lilac HVAC sizes the outdoor unit for the real combined load, positions the heads properly, and installs the lot to Hitachi and Temperzone spec.
Room-by-room comfort, without a wall of outdoor units.
Multi-Head Services We Handle
Multi-head systems designed around your rooms and installed to manufacturer spec, with the outdoor unit sized for the combined load, not just the head count.
Ageing separate splits replaced with one tidy multi-head system, or an old multi-head swapped for a modern, more efficient unit.
Heads that won't cool, refrigerant faults, and error codes across any head, diagnosed and fixed properly.
Every head cleaned and checked, drains flushed, and the outdoor unit inspected for salt-air wear.
Signs a Multi-Head System Suits Your Home
Two to five rooms that need conditioning, each on its own schedule
No roof space for ducting: flat roofs, cathedral ceilings, or tight cavities
A unit, townhouse, or strata property where outdoor unit numbers or placement are restricted
A small courtyard or balcony with room for one outdoor unit, not several
Two or three old splits due for replacement, and a chance to consolidate
Two or three old splits due for replacement, and a chance to consolidate
If separate splits or ducted would actually serve you better, we’ll say so and show you the numbers. You make the call.
Why Central Coast Homes Choose Lilac HVAC for Multi-Head Systems
Sized for the combined load.
A multi-head outdoor unit has to carry every room on a hot afternoon. We size it for how your rooms are actually used, so it isn't gasping in January.
Honest advice on the right system.
Multi-head isn't always the answer. If two separate splits or a small ducted system is the smarter spend for your home, you'll hear it from us first.
Authorised Hitachi and Temperzone installer.
Your system is installed to manufacturer spec, which protects your warranty and keeps every head performing.
Fixed-price quotes, no hidden extras.
You get the number before the work starts. What you're quoted is what you pay.
How It Works
1.Get in touch
Call 0401 764 917 or request a quote and tell us which rooms need conditioning
Site check and fixed-price quote.
We assess the rooms, the pipe runs, and the outdoor unit position, then send a clear, fixed-price quote before any work starts
3. The install, done tidy
Every head installed and tested, pipework run neatly, the controls explained, and the house cleaned up before we leave.
5.0 ★ from 42 Google reviews
What Our Customers Say
Multi-Head Air Conditioning Across the Central Coast
Lilac HVAC supplies, installs, and services multi-head air conditioners right across the Central Coast, from Woy Woy in the south up through Gosford and Erina to Tuggerah and Wyong.
Suburbs serviced include:
Gosford
Wyong
Tuggerah
Erina
Woy Woy
Umina Beach
The Entrance
Terrigal
Lake Haven
Bateau Bay
Not sure if we service your area? Give us a call, we probably do.
Frequently Asked Questions
What is a multi head air conditioner?
A multi head air conditioner (also called a multi-split) runs two or more indoor units off a single outdoor unit. Each room gets its own head and its own temperature setting, while outside there’s just one compressor. It suits homes with several rooms to condition but no space for ducting or multiple outdoor units.
Is a multi-head system better than separate split systems?
It depends on the home. Multi-head wins when outdoor space is tight, strata rules limit outdoor units, or you want a cleaner look outside. Separate splits win on redundancy, since each room runs independently, and can be cheaper for just two rooms. We’ll assess your home and give you the honest comparison.
What's the difference between multi-head and ducted air conditioning?
Multi-head uses visible indoor units in each room with individual control and no ductwork. Ducted hides everything in the roof and conditions the whole home through ceiling vents with zoning. Multi-head generally suits two to five rooms; ducted suits whole-home coverage where roof space allows.
How many indoor units can run off one outdoor unit?
Most residential multi-head systems run two to five indoor heads off a single outdoor unit, depending on the outdoor unit’s capacity. The right number comes down to the size of each room and the combined load, which we calculate at the site check.
Can each room be set to a different temperature?
Yes, each head has its own temperature control. One thing to know upfront: most multi-head systems run in one mode at a time across all heads, so the house heats together or cools together. Rooms can’t heat and cool simultaneously, and we’ll flag it if that matters for your household.
What happens if the outdoor unit breaks down?
Every head relies on the one outdoor unit, so a fault outside affects all connected rooms. It’s the honest trade-off against separate splits, and part of why annual servicing matters more on a multi-head. If redundancy is a priority for you, we’ll talk through separate splits instead.
How much does a multi head air conditioner cost installed?
It depends on the number of heads, their sizes, and the pipe runs between rooms, so we quote each job individually. You get a fixed price before any work starts, with no hidden extras.
What areas do you cover?
Lilac HVAC installs multi-head air conditioning across the Central Coast, including Gosford, Erina, Tuggerah, Wyong, and Woy Woy, plus Cooranbong, Morisset, and Toronto in southern Lake Macquarie.
Find Out If Multi-Head Is the Right Fit, Before You Spend a Dollar
Request a fixed-price quote and get an honest recommendation: multi-head, separate splits, or ducted, with the numbers to back it. No pressure either way.
Licensed and insured in NSW. Most quotes are back within 24 hours.