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Where Can Multi Head Split Systems Be Installed?

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2.5kW Mitsubishi Electric Split System Head Unit Installation

Multi Head Split System Locations

Multi-head split systems can be installed in any residential or commercial building that has the necessary space, such as houses, duplexes, townhouses, apartments, and offices.

The outdoor condensing unit should be placed in a well-ventilated area, away from direct sunlight and other sources of heat where possible. The indoor units should be installed in the rooms that need cooling. It’s important to make sure that the system is the correct size for the space it’s meant to cool.

Apartment buildings are a common place where we install multi-head split systems, since ducted installations aren’t possible. They require a ceiling void, which most apartments don’t have. A single split system can only cool one room at a time, or you can use internal trunking to position it across from open doorways to get airflow into bedrooms. However, this doesn’t look as nice.

By choosing to install a multi-head split system, it lets you cool multiple rooms at once, with a cleaner look.

Mitsubishi Electric Split System Installed in Living Room
Mitsubishi Electric Split System Installation with Indoor and Outdoor Unit Position in Apartment

Multi Head Split System Installation Examples

2 Head Multi Split System Installation – 2 Bedroom Apartment

When targeting several rooms in an apartment, the best solution is to install a multi-split system. However, there are some limitations to consider such as the interconnecting piping between the indoor and outdoor units, and the positioning of the rooms. To achieve an ideal finish, direct services should be run out through external walls rather than using internal trunking.

Here are some examples of different positioning options, along with their respective benefits and drawbacks. The floor plans demonstrate two choices for the same apartment.

 

Floor Plan of a Multi Head Installation Sydney Apartment
Multi Head Split System Option 1
Multi Head Installation Sydney Apartment Head Split System Installation Sydney - Apartment Air Conditioning Layout with Internal Trunking
Multi Head Split System Option 2

We recommend Option 1 as the head unit placement for its attractive finish and no need for internal trunking. However, the head unit in the master bedroom isn’t in the middle of the wall. Despite this, it still works well for heating and cooling the room.

Option 2 moves the master bedroom head unit to the centre of the wall, with internal trunking. This also allows the living room head unit to be repositioned, since its services use the same trunking.

Installation of a head unit in bedroom two may be possible, but the difficulty and expense of running the services might not make it worth the effort. An alternative solution is to install a separate split system to target the second bedroom.

3 Head Multi Split System Installation Bondi – 3 Bedroom Apartment

This multi head split system installation in a Bondi apartment included the following components:

  • 7.1kW Mitsubishi Electric 3 Port Multi Outdoor Unit (MXZ-4F71VGD-A1) positioned on the balcony;
  • 5kW Wall Mounted Indoor Head Unit (MSZ-EF50VGD-A1) for the living room;
  • 2.5kW Wall Mounted Indoor Head Unit (MSZ-EF25VGD-A1) for the master bedroom; and
  • 2.5kW Wall Mounted Indoor Head Unit (MSZ-EF25VGD-A1) for the second bedroom.

This is what the multi-installation looks like on the floor plan:

Floor Plan of a Mitsubishi Electric 3 Head Multi Installation

The layout of the Bondi apartment enabled us to install three multi head units with minimal internal trunking.

In the living room, the head unit was positioned side-to-back with the outdoor unit above the TV. Bedroom two was placed back-to-back with the living room, with both their services sharing the same internal trunking. Lastly, the master bedroom unit was situated in the corner of the room and its services ran outside the building.

This apartment’s floor plan is an example that compliments a multi head split-system installation. Here are photos of the completed multi head split system installation.

2.5kW Mitsubishi Electric Split System Head Unit Installation
2.5kW Mitsubishi Electric Multi Head Split System Unit Installed in Bed 2
5kW Mitsubishi Electric Split System Head Unit Installation
5kW Mitsubishi Electric Multi Head Split System Unit Installed in Living
2.5kW Mitsubishi Electric Multi Head Unit Installation
2.5kW Mitsubishi Electric Multi Head Split System Unit Installed in Master Bedroom
7.1kW Mitsubishi Electric Outdoor Compressor Installation Bondi
7.1kW Mitsubishi Electric Multi Head Outdoor Unit Installed on Apartment Balcony

 

4 Head Multi Head Installation in an Apartment

This multi head split system installation in a Dee Why apartment which included the following components:

  • 7.1kW Mitsubishi Electric 4 Port Multi Outdoor Unit (MXZ-4F71VGD-A1) positioned on the balcony;
  • 5kW Wall Mounted Indoor Head Unit (MSZ-AP50VGD-A1) for the lounge room;
  • Three x 2kW Wall Mounted Indoor Head Unit (MSZ-AP20VGD-A1) for the master, second and third bedrooms;

This is what the multi installation looks like on the floor plan:

4 Head Multi Head Installation in an Apartment

 

The challenge of this multi-head split installation was to find a solution for the head units in the lounge and bedroom three, since the owner only wanted to use the master balcony.

To resolve this, we found compromise by placing the lounge head unit above the master bedroom doorway and running services into bedroom two. Unfortunately, this meant that the internal trunking became visible in bedroom two.

To address the second issue in bedroom three, we used a water pump to push the condensation waste water created by the air conditioner outside. This also allowed us to install the internal trunking in the corner of the bedroom two ceiling, making it hardly noticeable.

This complex installation exemplifies the challenges we faced and the compromises necessary to ensure air conditioning reached every room.

 

 

 

 

 

5kW Mitsubishi Electric Multi Head Unit Installation Sydney
5kW Mitsubishi Electric Multi Head Unit in Lounge
Multi Head Installers Sydney Using Internal Trunking
Service Concealed in Smart Duct Trunking
2kW Mitsubishi Electric Multi Head Unit Installers Sydney
Lounge Service & Main 2kW Multi Head Unit
2kW Mitsubishi Electric Multi Split System Installers Sydney
2kW Mitsubishi Electric Multi Head Unit in Bed 2
2kW Mitsubishi Electric Multi Split Installation Sydney
2kW Mitsubishi Electric Multi Head Unit in Bed 3

Strata Compliance for Multi Head Split System Installations

Apartment Multi Head AC Installations

For strata regulations, it is important to know what to do. There are forms to fill out and a detailed explanation of the multi-head AC installation must be provided. The strata committee needs to know what the installation will look like, if it will affect your neighbours, and if it will blend in with the building facade. If there are any questions or requests, we will work with you to make sure they are answered.

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  • penny Maguire

    Star Rating from penny Maguire
    2 February, 2025
    Since my first contact with Ready Electrical I have been so impressed with their professionalism and attitude to their work. They reply really quickly to any queries , keep you informed when the electrician is due to come and on his way which is great service , they do a great job and then they leave everything super clean and tidy. I have used Greg and team for a few jobs now and so glad I fo...
  • dominic sudano

    Star Rating from dominic sudano
    31 January, 2025
    I absolutely recommend this company. Mike advised me on the right service and booked an appointment within a week. The air conditioning technicians performed a thorough deep clean on our split system, and a maintenance service on our larger 16kw/14kw reverse cycle system. Lachie and Xavier were punctual, honest and professional, and took the time to explain the entire process, and a couple of i...
  • jenny knowles

    Star Rating from jenny knowles
    30 January, 2025
    I have just had a multi system and a split system installed in my home by Ready Electrical and I can't speak highly enough about this business. I called them a couple of weeks ago (during the very busy New Year period) to enquire on getting some advice re air-conditioning our home I spoke to Greg (owner) and he organized for Tory to come and give me some advice and some estimates re various op...
  • Shane O'Neill

    Star Rating from Shane O'Neill
    24 January, 2025
    We had Renzo, Daniel, Danny & Luca come and install a new 7.3Kw Panasonic ducted system to replace an old one. The guys were very punctual, extremely professional and polite - an absolute pleasure to deal with.
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    24 January, 2025
    excellent service and pricing. Technician Marco was very professional and respectful.
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    17 January, 2025
    Absolutely outstanding Service from Renzo, Danny and Luca at Ready Electrical installations of my new air conditioning system. Courteous, efficient and helpful we were very impressed.
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    Star Rating from Tony Parkin
    13 January, 2025
    Amazing service at a busy time over Christmas New Year. A real "lifesaver" for us to get our aircon working again. Will definetly use Ready Electrical for all our electrical work going forward!
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    10 January, 2025
    From enquiry to booking to service call, this company was professional and courteous.
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    22 December, 2024
    Fantastic service from start to finish. Fixed my air conditioning promptly and it works perfectly now. Thank you to Michael & the team!