Multi Head Split System Air Conditioning

A multi head split system air conditioner can be a great option for Melbourne homeowners as it can be installed in multiple rooms.

Our team of professionals have years of experience installing multi head air conditioners, and we are confident that we can provide you with the best possible service.

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What is a Multi-Head Split System?

Multi-head split systems allow you to control different room temperatures from one outdoor unit.

Ideal for homes needing flexible, zoned heating and cooling.

‘Multi-head’ refers to the system of having multiple indoor split system units throughout a home that run from a single outdoor unit. Each indoor unit heats and cools their respective room(s) while the outdoor unit (usually installed at the side or back of the house) runs the multiple indoor units.

Multi-head air conditioners are ideal when there is limited space for multiple outdoor units. Multi-Head Systems also allow for individual control of the air conditioning in each room. This optimises comfort levels as each room can be set to your desired temperature. Multi-Head Systems can also mean reducing your electricity bills because you’ll only heat and cool the rooms in use.

The multi-head system you choose will depend on how many rooms require heating and cooling. Up to 6 indoor units can connect to a single outdoor split system unit. At Coldflow we have a huge range of the best brands to choose from.

Organise a Free Multi Head Split System Quote Now or Contact us today to learn more about our multi head split system services and how we can help you keep your home comfortable.

Multi Head Split System Specifications

Multi Room System

Runs On Electricity

Heating and Cooling

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Frequently Asked Questions About Multi Head Split System Airconditioning

How Do Multi-Head Split Systems Work?

How Do Multi-Head Split Systems Compare?

Traditional Split Systems have a matching outdoor unit for every indoor unit; given that every home has multiple rooms, having an outdoor unit for every indoor unit would take up a lot of space and power consumption – that’s where a Multi-Head system comes in.

With a Multi-Head system, you can have 2 or more indoor units connected to 1 outdoor saving you valuable space, and future servicing costs.

How a multi head system installed vs normal split system diagram — How a Multi-Head Split System works compared to a standard Split System

How Do Multi-Head Split Systems work?

Multi-Head Split Systems use the same technology as normal Split Systems. They work by having half the system (called a condenser) outside the home, and the other half (called the fan coil, or internal unit) inside the home.

When cooling, the warm air from inside the room is taken in by the fan coil and removed, resulting in cool air recirculating back into the house. While reverse cycle allows for the heat pump to run in reverse to provide heating during cold days.

What Are The Running Costs With Multi Head Split Systems?

One of our recommended brands for Multi-Head Split Systems is Mitsubishi Electric. For a Mitsubishi Electric MXZ Series 7.1KW System, installed in 2x small bedrooms, and 1x lounge room providing regular heating & cooling during the winter and summer periods, the annual running cost would be measured at $702.90.

Multi head split system running costs diagram — How a Multi-Head Split System works compared to a standard Split System

*Data is based on: 2016 Victoria Energy Tariff of 32.1 c/kWh, using a Mitsubishi Electric Multi-Head MXZ-4e71vad/msz-ge25vad collected from Sustainability Victoria’s Energy Consumption and Running Costs website. Usage times were set on average to 4 months of heating, and 2 months of cooling based on 7 hours a day. Actual running costs are affected by many factors including climate and insulation; this data should only be used as a guide and does not guarantee your individual running costs will reflect these results.

Reducing Multi Head Split System Running Costs

It doesn’t take much to reduce your running costs. Depending on the model you purchase, and it’s respective star rating will determine how much you can save annually. However looking beyond the initial cost to how you use your Multi-Head Split System can help as well.

Smarter Choice, Save Energy Water and Money

Tips For Using A Split System

Best Tip! Set the thermostat between 24C and 26C for cooling. Every degree lower in summer will increase the running costs by around 10%.

Use the economy setting if your split system has one and regularly service your air conditioner.
Keep the sun’s heat out by closing curtains and external blinds during the day. Close windows and doors to areas being cooled when the split system is running.
When the split system is switched off and its cooler outside, open doors and windows to let the cool air in.
Insulate your home to keep the heat out in summer and in during winter.
Dress to suit the weather conditions.

Find more at https://www.sustainability.vic.gov.au

Why Choose Multi Head Split System?

Multi-Head Split Systems are an economical solution for cooling lots of different rooms. Multi-head air conditioners are relatively simple to install, and the installation process can be incorporated to your renovation or building project. Building occupants can adjust the heating/cooling in their own room. It is an ideal choice for large homes, office buildings, and multi-residential premises.

Various split system indoor unit types — When using a Multi-Head Split System, you’re not limited to just Wall Mounted indoor units, in fact you can choose from a whole range of different indoor units

Why Choose Coldflow for Multi-Head Split Systems?

Unlike single Split Systems which can be sold and installed by almost any air conditioning company, Multi-Head Split Systems can only be sold and installed by qualified air conditioning companies, it’s not even something that the big retail stores can sell and install. With over 150,000 heating and cooling installations completed, we have conducted thousands of Multi-Head air conditioning installations; combined with our experience, and range you won’t get a better solution anywhere else.

We supply and install a wide range of different multi head air conditioners at competitive prices. We’ll listen to your ideas, needs and budget constraints to help you decide which system would best suit your property. Our professional team can also repair and maintain your existing system at an affordable rate.

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Top-selling Multi Head Split System Brands from Coldflow

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Multi Head Split System Installation Locations

Melbourne residents looking to cool down during the hot summer months know they can rely on Coldflow for reliable air conditioning installation. For over 50 years, we have provided quality installation and air conditioning repairs across Melbourne's suburbs. Whether you're in Glen Waverley, Richmond or even Mornington, we are able to come to you and are ready to provide unbeatable expertise and experience.

Coldflow are Melbourne's most trusted name when it comes to air conditioning needs!

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What Our Customers Are Saying

Product selection and design was perfect. I was always informed with progress. Installation was carried out by courteous tradesmen. The completed installation was tested thoroughly and I was shown how to operate the equipment. Well done to everyone who participated. Big Thanks!

JOHN R.
TEMPLESTOWE
November 2022

On time, informative quote from pleasant sales person. Quick, clean install from pleasant on time installer. Installation even brought forward, quote on Wednesday, instal on Friday! So far great service just got to see how unit performs in hot weather.

Elizabeth A.
NARRE WARREN SOUTH
September 2023

The two technicians were well mannered, presented well as representative of your company and did a good job explaining what they had done in terms of the service of our gas heater. They were polite, arrived when they said they would which is important given we work form home and have work commitments. Great ambassadors for your company.

MARIANNE S.
BALWYN
April 2025

The whole process was very smooth end to end and we are very happy with the result. Everyone we dealt with was very professional and got back to answer our queries right away. We have already recommended Coldflow to 2 of our friends who are looking to have split systems installed.

KATHY H.
BONBEACH
September 2025

I received a call about 20 minutes before the team arrived at my house. They were extremely helpful and friendly. I was able to pay for the job on the spot, or alternatively, the office could send me an invoice. I appreciated the flexibility of the payment methods.

SUE W.
HIGHETT
June 2025

I was very happy with this companies service. I had a lot of appointments and they made a time that suited. They even showed me how to use the ducted heating system to as an air conditioning ducted system as I only have an air con in the lounge room. I was very impressed.

DANIELLE D.
BORONIA
October 2024

Darren Story was very helpful with the initial site visit, he explained clearly how the installation would run, and gave us the options. Ash and his team did a highly professional job with the installation, and I am thankful that they wore masks as my mum was home recovering from surgery. A brilliant job all round, thank you very much.

Patricia j.
PARKDALE
April 2023

Every step of the process was first class and professional. You did what you said you were going to do, on the days that you promised and the installation was like swiss clockwork. Best service experience I have had in the last 5 years. Special shout out to Shanon who organised superbly from day one.

DARYL K.
TOORAK
August 2025

I was especially happy with the happy with the airconditioner installed in my bedroom.I can highly recommend tle 2 young men who installed it. They were very polite, the airconditioner is well fitted, it works well and when cleaned up after their work. The office workers were helpful responding to calls and answering my questions.

ALMA K.
SOUTH MORANG
May 2024

The installers were exceptionally good. Understood the fragility of my ceiling and dealt with my threatening neighbour when they climbed on the roof on my side. The technician also gave me advice on how to keep the filters healthy and what setting to use. Thanks Coldflow.

JULIE D.
HAWTHORN
January 2025

Organised for the team to come out and assess the in laws heating and cooling. There were 6 systems in total. All were checked and reports received. Services conducted on the systems worth keeping and advice given re the others, allowing informed decisions to be made. Highly recommended.

LINA S.
MOOROOLBARK
July 2024

Ray did an excellent job. As it turned out, the error that caused the problem was cleared when the power was off after the storm, but he still made sure the system was working properly by doing a really thorough check of everything. Very helpful, professional and clearly very keen to make sure the job was done properly. Great work!

ANDREW R.
MULGRAVE
February 2024

I had not dealt with Coldflow until very recently. In a two week period I have dealt with service, sale and installation personnel. All of them were extremely pleasant to deal with, very helpful and efficient - great customer service makes happy customers :)

WENDY L.
MALVERN EAST
August 2023

Rang for a service on the existing gas ducted heating system to find the system had died. A quote for a new system was provided on the day and installed the next day. The installation team were excellent, providing great advice and support during the installation. Sincere thank you to all.

TINA M.
TEMPLESTOWE
June 2025

Sorry I had forgotten the survey. All went well. Ray came as he said and went to work straight away. He left the area clean and tidy after explaining what he had done for the service. Will definitely look to Coldflow in two years time for the next service.

LIZ P.
NOTTING HILL
June 2024

Prompt and good communication in letting customers know when they are about to arrive. They do and communicate what was done in service. Any questions are answered and I like the professionalism of turning up in a company named work vehicle and uniform. Also the payment method is trusted with a receipt on the email

KATHERINE V.
SCORESBY
November 2024

Once again Brodie excelled and organised a technician to come straight out to tend to a minor issue. No questions asked just great customer service as always. I highly recommended Brodie and the team at ColdFlow. After using them for the first time a few years ago we would not go anywhere else. A huge 'thank you' to everyone at ColdFlow ??

TRACEY S.
GARFIELD
February 2024

During the quote process, Jared was very informative about the options available, booking staff for install were extremely accomodating for an earlier installation date & install process was fast & efficient. I would highly recommend Coldflow to anyone looking at ducted heating. Thanks Team!!

KATHLEEN K.
FERNTREE GULLY
May 2025

Coldflow were great to deal with throughout the whole process. Communication was very good. Installers were on time, efficient and friendly. They moved furniture and picture on wall, put a sheet down over the carpet and left everything clean. Explained how to use the split system

HEATHER J.
CROYDON
January 2025

Craig was great, explaining thoroughly & giving advice on appropriate systems to best suit our floor plan. Advised where best the systems should be installed. The young lads installing were absolutely marvelous! Very polite, very tidy & we can't fault their work. Thank you to all involved in making our purchase a hassle free transaction

TRACEY M.
BERWICK
November 2023

Very glad and relieved I chose Coldflow. Your installer Murray arrived at 7am Monday 21st, was quickly to work with a minimum of fuss. Old Brivis unit and new Braermar unit out and in through the roof. All over by 9am. He showed us how to use the Braemar control unit before leaving. Great job.

PETER H.
MITCHAM
January 2024

Jared, Lucas and Luke were all very professional, friendly and courteous. We were very impressed with the communication and all were on time for scheduled appointments. They were all just really easy to deal with, we'd definitely recommend Coldflow.

KATE H.
CHADSTONE
December 2023

Fantastic service both in regards to receiving the quote (the man sent out seemed to be very knowledgeable and helpful in providing advice on what would work) as well as the installers, who were timely, friendly, knowledgeable and professional in their installation of our split systems :) very very happy with the service we received!!

MARC P.
WOLLERT
January 2024

The service was outstanding from when i made the first call to the completion, Arman made the whole journey seamless and effortless, Murray the licensed installer was very helpful, and his service was second to non. on time he worked effortless to meet the weather prediction and completed the job in time.

RAFIK M.
NARRE WARREN
September 2025

Daniel Hay, the person that measured up and provided the estimate was excellent. He was very professional and came across as very honest and trustworthy. The installer's were excellent on the day they just got on with the job and removed all the rubbish and vacuum up afterwards.

MARIAN D.
EDEN PARK
February 2023

I have always had very good service from Coldflow in the past and now at present and I would thoroughly recommend them to everyone who has airconditioning. As our house is relatively new at present, we are waiting to hear from the builders if our system is still under warranty, if it isnt we will certainly get back to you again.

LINDA F.
CLYDE
January 2025

Amazing turnaround and communication! We had a sales person booked in 3 days after we made the online enquiry. Quote was provided on the spot. All questions answered promptly. Installation one week later. All completed in one day. Sales and installations staff were all super friendly, approachable and helpful. Could not fault the team or service!

MEGAN T.
LAUNCHING PLACE
June 2025

Jared was most helpful at all stages especially with filling out the form during the cash back submission to Mitsubishi. I was very happy with Scott the electrician who returned the installation areas back to normal condition. Thanks Jared and Scott.

LIZ P.
NOTTING HILL
July 2023

I just had my two units installed. Please pass on my thanks to Jared Wates, who provided the quote, and the team that installed the systems today. The installation team worked really hard, double-checked, if not triple-checked, and certainly made sure things were clean when they left. A very professional and courteous team.

STEPHEN R.
ROWVILLE
May 2025

This was an incredibly easy process for us from start to finish. Daniel was wonderful at determining the best fit for our house and life and made the selection process so easy. The team on the day were quick and did a great job. We can't believe it didn't even take a full day. We are so happy with everything!

Tess F.
COBURG
January 2023

The whole process was smooth from beginning to end. (Brian was Sales Rep). Good communication was provided via phone or txt msgs. The installer (Matt) was punctual, professional, polite, friendly, and a hard worker on a very hot day! A/c unit is effective, quiet and a slimline design. Thank You!

JENNY T.
CLYDE NORTH
February 2025

Daniel Hay - Sales consultant was awesome and he recommended the best EvapCooling system for my double storey house. Installers were amazing. Did the best and clean job. Highly recommend ColdFlow for professional service and they are THE BEST in Melbourne. PERIOD.

PARAM C.
HILLSIDE
December 2023

We had a great experience. We were called when there was a cancellation and had the heater installed very quickly. Nick who did the installation did a fantastic job, please pass our thanks on to him. Would highly recommend his work to anyone. Kind Regards

IAN G.
ASHWOOD
January 2024

The staff who attended to me was very good, courteous, communicated well and did everything possible to identify the problem and he did identify the problem. He also clearly explained the possible options for resolving the problem. I was very happy with his conduct.

Gladys M.
CAULFIELD NORTH
July 2025

We would have liked to be given the option whether to have the smelly chemicals sprayed in the split systems, as the smell lasted for over a week and we would have opted not to have that. Otherwise we are very happy with the overall service and communication from the technician.

LAUREN C.
RINGWOOD NORTH
August 2025

it was a rather difficult installation but both the A/C installers and the electricians did well. i am annoyed that I missed out on the Mitsubishi Bonus Gift Card worth up to $400 due to the impossibility of accessing the Mitsubishi website which required a Pin which could not be found anywhere. Very poor.

EMILE R.
MALVERN EAST
August 2025

The 2 servicemen were absolutely 1st class. Extremely knowledgeable, clean and efficient. Very importantly they were also extremely considerate of my house and how they conducted themselves! Overall a brilliant experience and I will certainly be telling everyone about the flawless service that I received. Many thanks

BRETT G.
BRIGHTON EAST
January 2024

STEVEN crcic IS THE man !!!!! I have never had a better service in my life my girlfriend and I are so stoked he got the fan in the other room working. He was professional caring and overall a champion. Give the brother a few weeks paid time off and a raise and a promotion. 10/10 can't recommend enough

MARCUS K.
COLLINGWOOD
January 2024

Our tech Ray did an outstanding job fixing our ducted heating system. It is very obvious that his experience makes him a valuable asset to Coldflow! Thanks for explaining every step of the repair so clearly & for your relaxed & friendly manner! Will 100% rebook a service as it is required down the track! Thanks again!

SEAN M.
DINGLEY VILLAGE
November 2024

Excellent service all round -from person who made appointment to the staff who attended gave great service. Notified half hour before arrival, arrived on time, service completed without fuss, used protector to safeguard flooring and minimise mess, showed photos of issue and how it was rectified, explained report and length of warranty on service.

ROSINA G.
CRAIGIEBURN
July 2024

Daniel was great to deal with, thorough, answered all our questions and communicated well the whole way through. The installation team that come out were fantastic. Double checked anything they needed to, polite, personable and respectful of our home and that my partner was working from home while they were here.

Will C.
ROMSEY
February 2025

I received a welcome email reminder that a service was due and made a booking date to suit. Your technicians contacted me the day before to confirm a time and they arrived on time as promised. The work was carried out efficiently by two young men, Steven and Hilo, who did so with courtesy and good humour. They are a credit to your business.

AAFKO S.
HEATHMONT
October 2024

Very happy with the whole process. All were knowledgeable and professional and turned up on time. They also worked through some pretty wet cold and windy weather but just got on with the job. Everything was explained and we were consulted if there were changes needed The system is working well and we are very happy with it

DIANNE L.
KEYSBOROUGH
June 2025

We'd highly recommend the team from Coldflow. Great communication, prompt and efficient installation and also great advice regarding the removal of our old gas wall heater. Not something we had considered but well worth it with the government rebate which we hadn't known about. Absolutely love our new Daikin unit too! Thanks coldflow.??

PETER M.
ASPENDALE GARDENS
August 2025

The two installers where great ( both named Lucas) the installed four in door head and two main units outside. Very please with the end result . This is the second time I have purchased from Coldflow and would not hesitate in recommending you to others.

Geoff B.
WARRAGUL
November 2022

The whole installation and mains connection went seamlessly, with only a very small 'mains disconnect' period, which was great as my son is currently WFH and had a very small unavailability time with work. Very happy with the whole process, from quote to installation.

Keith G.
HAMPTON PARK
February 2023

I was happy with the whole procedure, the cheerful telephone contacts including Adam, the visit from Chris for the original service, the quotation and information from Brian and the two installers yesterday. Thank you all for being so positive and Helpful.

VERONICA N.
ENDEAVOUR HILLS
June 2023

We were very happy with the whole process, from the Sales Consultant Liam, to the installers Josh, Anton, Bailey and Casper. They were all excellent workers from the moment they arrived to when they left. They were on time, polite and cleaned up all of their mess. Would highly recommend.

DEBBY F.
CHELTENHAM
February 2023

The engineers were very friendly and professional. They went out of their way to listen to me as a customer. The quality of their work was top-notch: they knew exactly what to do and they expertly installed the air con devices. Would definitely recommend ColdFlow to my friends and family.

GREG C.
MULGRAVE
November 2023

Chris Didcock was very friendly and reassured me that the issue would be rectified. However, our heater went back to fault mode after Chris left. As promised, Chris came first thing in the morning and reset the heating unit after being in contact with the manufacturer about the error code.

MICHAEL B.
LYNDHURST
June 2024

More Coldflow Customer Reviews >

Why Choose Coldflow For Heating & Cooling?

50+ Years Family Owned & Operated

Servicing Melbourne-Wide

Over 150,000+ Installations

In-House Engineering Design Team

6 Years Installation Guarantee

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