Multi-Split System Service & Maintenance Melbourne

EZYAIR provides professional multi-split system service and maintenance across metropolitan Melbourne. A multi-split system connects several indoor units to one outdoor unit, so each indoor unit needs regular maintenance to keep the whole system heating and cooling efficiently. We offer two services for multi-split systems: our Standard Preventive Maintenance Service and our Deep Clean Maintenance Service.

We service multi-split systems from other brands and installers, not only the systems we install. Book a multi-split service or call 1300 EZYAIR (1300 399 247).

Why regular multi-split system maintenance matters

Every air conditioner requires maintenance to ensure it is operating at optimal performance and efficiency. Regular maintenance:

removes bacteria, mould, pollen, dust and microbial matter from the air conditioner, reducing the chances of sickness
enables the air conditioner to operate at its maximum energy efficiency, saving on operating costs
removes dander and debris trapped inside the filtration system, which can ignite due to an electrical fault
eradicates odours such as mould and smoke, which can be a sign of a sick air conditioner
dislodges blockages in the drain, which can otherwise cause the air conditioner to backflow and flood

Scheduled maintenance is also a requirement of every manufacturer's warranty.

Standard Service or Deep Clean: which do you need?

EZYAIR offers two maintenance services for split and multi-split systems:

Standard Preventive Maintenance Service: our 28 point preventive maintenance service for regular, scheduled maintenance, covering the indoor unit, the outdoor unit, electrical and refrigerant checks, and recording of air temperatures. It suits systems that are serviced regularly and are in good condition.
Deep Clean Maintenance Service: a full sanitation and preventive maintenance service. The indoor unit is dismantled, the indoor coil is treated with an antifungal and antibacterial conditioner and flushed with a high pressure wash, and the barrel fan, drain and chassis are cleaned. It suits systems with odours, visible mould or dust build up, or systems that have not been serviced for some time.

Not sure which service you need? Contact our team and we will recommend the right service for your system.

What is included in the Standard Service?

The Standard Preventive Maintenance Service follows the 28 point checklist below.

Remove particle filters.
Dismantle indoor chassis and access indoor fan coil.
Check the indoor unit drain for leaks.
Visually inspect the indoor unit for signs of refrigerant leaks.
Tighten indoor wiring terminal block.
Clean particle filters.
Check isolator is level, siliconed, operational and safe.
Check adequate insulation is on the refrigerant line sets.
If accessible, clean the condenser coil of dirt and debris.
Inspect condenser fan bearings for signs of damage or wear.
Remove any obstructions from the condenser fan.
Check for burnt wiring, overheating, sparking or bare wires.
Visually inspect the outdoor unit for signs of refrigerant leaks.
Tighten all caps on outdoor refrigerant valves.
Check mounts and holding bolts for the condenser.
Wipe down and clean the outdoor chassis.
Check power supply is identified properly.
Reassemble the indoor chassis and put it back into place.
Reinstall particle filters.
Check the indoor unit is level and secure.
Clean and wipe down the indoor chassis.
Supply new batteries for remote control.
Check infrared sensor operation on all modes.
Calibrate remote control and set time.
Update and replace servicing sticker.
Record return air temperature.
Record supply air temperature.
Record total heat exchange.

To book a Standard Preventive Maintenance Service, contact our team or call 1300 EZYAIR (1300 399 247).

What is included in a multi-split Deep Clean?

With the Deep Clean Maintenance Service, every indoor unit of your multi-split system receives the full Deep Clean checklist below, and the shared outdoor unit is serviced in the same visit.

Indoor unit deep clean

All of the standard maintenance checks (above) plus:

Apply an antifungal and antibacterial conditioner to the indoor coil.
Flush the indoor coil with a high pressure wash.
Clean the internal barrel fan with a specialised wand.
Use water pressure to dislodge any mould or debris inside the condensate drain, and check the indoor unit drain for leaks.
Clean the indoor chassis with a high pressure rinse.
Clean the particle filters.

Outdoor unit (condenser)

Clean the condenser coil of dirt and debris (where accessible).
Inspect the condenser fan bearings for signs of damage or wear, and clear any obstructions from the condenser fan.
Tighten all caps on the outdoor refrigerant valves.
Check the mounts and holding bolts for the condenser.
Wipe down and clean the outdoor chassis.

Electrical, refrigerant and safety checks

Visually inspect the indoor and outdoor units for signs of refrigerant leaks.
Tighten the indoor wiring terminal blocks.
Check for burnt wiring, overheating, sparking or bare wires.
Check the isolator is level, siliconed, operational and safe.
Confirm the circuit breaker is identified properly.
Check adequate insulation is on the refrigerant line sets.

Reassembly, controller and performance testing

Reassemble the indoor chassis, reinstall the particle filters, and check the indoor unit is level and secure.
Clean and wipe down the indoor chassis.
Supply new batteries for the remote control, calibrate the remote control and set the time.
Check infrared sensor operation in all modes.
Record the return air temperature, the supply air temperature and the total heat exchange.
Update and replace the servicing sticker.

Before and after: real EZYAIR maintenance jobs

Typical indoor units before a clean, and what they look like after. Photos are from EZYAIR jobs and each pair may show different units.

Before: indoor coil coated in dirt and dust awaiting multi-split indoor unit service — Before: a coil coated in dirt. After: a rinsed coil on an opened unit.

After: rinsed coil on an opened wall head at the end of multi-split indoor unit service — Before: a coil coated in dirt. After: a rinsed coil on an opened unit.

Before: opened indoor unit with a brown, heavily soiled coil awaiting a split system deep clean — Before: an opened indoor unit with a heavily soiled coil. After: a cleaned, opened unit.

After: opened wall split with a clean rinsed coil and wash bag fitted underneath — Before: an opened indoor unit with a heavily soiled coil. After: a cleaned, opened unit.

Before: dust matted across indoor coil fins on a wall split in Melbourne — Before: coil fins matted with dust. After: a rinsed, clear coil.

After: evaporator coil rinsed clear and bright following air conditioner coil cleaning — Before: coil fins matted with dust. After: a rinsed, clear coil.

Before: front panel lifted to show filters blackened with dust on a wall split — Before: filters blackened with dust inside the unit. After: clean filters refitted.

After: clean filters refitted on an opened wall split after a split system deep clean — Before: filters blackened with dust inside the unit. After: clean filters refitted.

Before: both filters caked brown with dust on a wall head from a multi-split system — Before: filters caked in dust. After: clean filters in an opened unit.

After: clean filters and coil on an opened wall head after multi-split indoor unit service — Before: filters caked in dust. After: clean filters in an opened unit.

Before: filter caked with lint and dust behind the open panel of a wall split — Before: a filter caked with lint. After: a clean filter behind an open panel.

After: clean filters seated behind the lifted front panel following a split system deep clean — Before: a filter caked with lint. After: a clean filter behind an open panel.

Before: close view of coil fins coated in grey dust before air conditioner coil cleaning — Before: grey dust across coil fins. After: clear, rinsed fins.

After: close view of bright, clear coil fins once air conditioner coil cleaning was done — Before: grey dust across coil fins. After: clear, rinsed fins.

Before: wall head filter panel furred with dust ahead of multi-split indoor unit service — Before: a filter panel furred with dust. After: a washed filter panel.

After: washed wall head filter panel with clear mesh after a multi-split service — Before: a filter panel furred with dust. After: a washed filter panel.

Before: two removed split system filters clogged solid with grey dust and lint — Before: removed filters clogged with dust. After: washed filters drying.

After: two washed split system filters laid out to dry after a deep clean — Before: removed filters clogged with dust. After: washed filters drying.

Before: blue framed filters packed with lint and dust from a Melbourne wall head — Before: filters packed with lint. After: washed filters.

After: blue framed filters washed clean during multi-split indoor unit service — Before: filters packed with lint. After: washed filters.

Before: pair of wall split filters grey with dust ahead of a split system deep clean — Before: filters grey with dust. After: washed filters.

After: pair of washed wall split filters with clear mesh and fresh inserts — Before: filters grey with dust. After: washed filters.

Before: green framed wall head filters dull with grime and fine dust — Before: filters dull with grime. After: washed filters.

After: green framed filters washed and clear, ready to refit on an indoor unit — Before: filters dull with grime. After: washed filters.

Before: large indoor unit filter mesh thick with dust and dark mould spots — Before: filter mesh thick with dust. After: an opened unit with clean filters.

After: opened indoor unit with clean filters and coil after a split system deep clean — Before: filter mesh thick with dust. After: an opened unit with clean filters.

Before: indoor unit filter mesh clogged with dust behind its wire guard — Before: filter mesh clogged with dust. After: an opened unit with clean filters.

After: opened wall head showing clean filters and coil after multi-split indoor unit service — Before: filter mesh clogged with dust. After: an opened unit with clean filters.

Before: pair of wall head filters grey with dust awaiting a multi-split clean — Before: a pair of dusty filters. After: clean filters refitted.

After: clean filters refitted in an opened wall head from a multi-split system in Melbourne — Before: a pair of dusty filters. After: clean filters refitted.

Before: dusty filter and mould spots on the lifted front panel of a wall split — Before: a dusty filter and mould spots on the panel. After: a clean opened unit.

After: wall split opened up with clean filters and grille following a split system deep clean — Before: a dusty filter and mould spots on the panel. After: a clean opened unit.

Before: indoor unit filters with patchy grey dust build up across the mesh — Before: filters with patchy dust build-up. After: clean filters in place.

After: clean filters fitted in a wall head after multi-split indoor unit service — Before: filters with patchy dust build-up. After: clean filters in place.

Before: stripped indoor unit with dust, grime and cobwebs behind the chassis — Before: dust and grime on a stripped indoor unit. After: a rinsed coil.

After: rinsed coil on an opened wall head following multi-split indoor unit service — Before: dust and grime on a stripped indoor unit. After: a rinsed coil.

We service multi-split systems from other brands and installers

You do not need to have had your multi-split system installed by EZYAIR to book a service. Our technicians maintain multi-split systems from other brands and installers, using the same maintenance checklist on every system.

Multi-split system service pricing

Our price list sets out Deep Clean pricing, including a discount for each additional unit serviced in the same booking, which also applies to multi-split indoor units. View our maintenance price list (opens in a new tab). Prices are a guide; we confirm the exact price, including Standard Preventive Maintenance Service pricing, when you book.

Parts warranty

EZYAIR warrants all new parts installed during service and maintenance work for a period of six (6) months from the date of service. This warranty covers defects in materials and workmanship of new parts only.

How often should a multi-split system be serviced?

As a general guide, EZYAIR recommends air conditioning maintenance every 400 working hours in a domestic environment, and every 200 working hours (or less) in a commercial environment, depending on the indoor air quality. Our team can recommend a schedule that suits how you use your system.

Signs your multi-split system needs a service

unpleasant or musty odours when the system starts
dust or visible mould on the filters or around the outlet of an indoor unit
water dripping from an indoor unit, which can indicate a blocked drain
weak airflow, or rooms that no longer reach the set temperature
unusual noise from an indoor unit or the outdoor unit
higher than usual energy use for the same level of comfort

If you notice any of these, contact our team to arrange a service.

Licensed technicians you can trust

EZYAIR has been installing and maintaining high efficiency heating and cooling systems since 2007. Our team includes licensed electricians, plumbers and refrigeration mechanics. Electrical Contractor 20559, Plumbing Licence 49852, Refrigerant Trading Authorisation AU25526, Refrigerant Handling Licence L156073.

Multi-split system service across Melbourne

From our base in Burwood, EZYAIR services air conditioners across most of metropolitan Melbourne. Check our service area map or contact us to confirm we cover your suburb.

Related maintenance services

Air conditioning maintenance in Melbourne: an overview of all EZYAIR maintenance services.
Split system service and maintenance for single wall mounted systems.
Ducted air conditioning service and maintenance for ducted reverse cycle systems.
Multi-split system installation

Multi-split system service FAQs

What is the difference between a standard service and a deep clean?

The Standard Preventive Maintenance Service is our 28 point preventive maintenance service for regular, scheduled maintenance. The Deep Clean Maintenance Service is a full sanitation service: each indoor unit is dismantled, the coil is treated with an antifungal and antibacterial conditioner and flushed with a high pressure wash, and the barrel fan, drain and chassis are cleaned. The Deep Clean suits systems with odours, mould or dust build up, or systems that have not been serviced for some time.

What does the Standard Preventive Maintenance Service include?

The Standard Preventive Maintenance Service follows a 28 point checklist covering the particle filters, the indoor fan coil and drain, the condenser coil and fan, the indoor wiring terminal block, refrigerant leak checks, the isolator and insulation, the remote control and infrared sensor, and recording the return air temperature, supply air temperature and total heat exchange.

What does a multi-split Deep Clean include?

Every indoor unit receives the full Deep Clean checklist, covering the filters, indoor coil, barrel fan, drain and chassis, and the shared outdoor unit is serviced in the same visit, followed by a performance test in all modes.

Do you service every indoor unit?

Yes. With the Deep Clean, every indoor unit connected to your multi-split system receives the full checklist, as each one has its own filters, coil, fan and drain.

How often should I service my multi-split system?

As a general guide, we recommend maintenance every 400 working hours in a domestic environment, and every 200 working hours or less in a commercial environment, depending on indoor air quality.

How much does a multi-split service cost?

Pricing depends on the number of indoor units. Our price list includes a discount for each additional unit, including multi-split indoor units. View our maintenance price list (opens in a new tab). Prices are a guide; we confirm the exact price when you book.

Do you service multi-split systems you did not install?

Yes. We service multi-split systems from other brands and installers, not only systems installed by EZYAIR. Every system receives the same maintenance checklist.

How do I book a multi-split service?

Complete our contact form or call 1300 EZYAIR (1300 399 247) and our team will arrange a suitable time.

Book your multi-split system service

Keep your multi-split system running efficiently all year round. Contact EZYAIR today or call 1300 EZYAIR (1300 399 247) to arrange a service.

Multi-Split System Service & Maintenance Melbourne

Why regular multi-split system maintenance matters

Standard Service or Deep Clean: which do you need?

What is included in the Standard Service?