Rinnai Air Conditioning Installation, Service & Repairs in Melbourne
Expert Rinnai heating and cooling support for Melbourne homes and businesses
ExtrordinAir helps Melbourne homeowners, landlords, builders, property managers and small businesses with Rinnai air conditioning service, repairs, replacement advice and installation.
Based in Airport West, we service Melbourne’s inner and outer suburbs and work with Rinnai air conditioning products including split system air conditioners, multi split air conditioners, ducted air conditioners, Mini VRF systems, and heating and cooling controllers.
For bookings or advice, call 1800 959 884, email service@extrordinair.com.au or complete our form on this page.
Our Rinnai air conditioning services
Rinnai air conditioning installation
Good installation is just as important as choosing the right brand. A system that is the wrong size, poorly located or badly configured can be noisy, inefficient and uncomfortable.
Before quoting a Rinnai installation, we consider:
* Room size and ceiling height
* Insulation
* Window size and sun exposure
* Number of rooms needing heating and cooling
* Whether zoning is required
* Indoor unit position
* Outdoor unit location and clearance
* Drainage
* Electrical requirements
* Access for future servicing
* Noise considerations
* Whether a split, multi split, ducted or Mini VRF system is the best fit
You receive a clear recommendation and quote before installation work begins.
Rinnai air conditioning servicing
Regular servicing helps your system run more efficiently, improves airflow and can identify small problems before they become expensive repairs.
Depending on the system type, a service may include:
* Cleaning or checking filters
* Checking indoor and outdoor units
* Inspecting visible pipework and drains
* Testing heating and cooling operation where applicable
* Checking airflow
* Inspecting ductwork where accessible
* Reviewing controller settings
* Looking for signs of wear, blockage or poor installation
* Advising on repairs, replacement parts or system upgrades
Rinnai air conditioning repairs
Book a repair assessment if your Rinnai air conditioner:
* Is not cooling properly
* Is not heating properly
* Has weak airflow
* Is leaking water
* Shows an error code
* Turns on and off repeatedly
* Makes unusual noise
* Has a controller that is not responding
* Produces uneven temperatures between rooms
* Has an outdoor unit that is not running normally
Our technician will inspect the system, explain the likely cause and provide repair options before additional work proceeds.
Where a system is old, undersized or uneconomical to repair, we will explain replacement options rather than pushing a short-term repair that may not solve the underlying problem.
Take a Look at Some of Our Recent Rinnai Installations Across Melbourne
Rinnai Multi Split Aircon Installation in Melbourne
We installed a Rinnai multi-head air conditioning system in this double storey Melbourne home. The multi-split system has 3 x indoor heads that each heat and cool the bedrooms. We also installed a separate 5kW Rinnai split system downstairs to heat and cool the living and dining area. This customer received an upfront VEU rebate, and will enjoy a 5 year warranty on the Rinnai air conditioners. Our installation work is covered by a 6 year guarantee with Victorian Building & Plumbing Commission.
Rinnai 18kW Multi Head Air Conditioning System
This Rinnai multi head air conditioning system installed in a Melbourne home rivals a ducted install! It’s a whopping 18kW system with 5 different heads inside ranging from 2kW to 5kW for whole home heating and cooling. This installation is backed by a 5 years manufacturer’s warranty and a 6 year installation guarantee.
Rinnai Ducted Air Conditioning Installation
ExtrordinAir recently supplied and installed this Rinnai 15kW single phase ducted reverse cycle air conditioner for a new build in Melbourne’s outer suburbs. It includes 6 x outlets and Rinnai wall controller. This installation is backed by a 5 years manufacturer’s warranty and a 6 year installation guarantee.
Rinnai air conditioning products we can help with
Different Rinnai air conditioning systems suit different homes, buildings and budgets. We can help you choose, install, service or repair the right option for your property.
Rinnai split system air conditioners
Rinnai split systems are commonly used for single rooms, bedrooms, living areas, apartments, home offices and smaller open-plan spaces.
We can help with:
* New split system installations
* Replacement of older split systems
* Fault diagnosis and repairs
* Poor cooling or heating performance
* Water leaks from the indoor unit
* Noisy operation
* Error codes
* Filter cleaning and maintenance
* Advice on correct unit size and placement
A split system may be the right choice when you want efficient heating and cooling for one main area without installing ductwork.
Rinnai ducted air conditioners
Rinnai ducted air conditioning provides whole-home comfort through ceiling or floor ducts. It can be a strong option for larger homes, renovations and new builds where discreet, centralised heating and cooling is the goal.
We can help with:
* Ducted air conditioning installations
* Zoning advice
* Airflow checks
* Ductwork inspection
* Controller setup
* Servicing and maintenance
* Fault diagnosis and repairs
Before recommending a ducted air conditioning system, we assess the property layout, roof or underfloor access, insulation, room sizes, zoning needs and the condition of any existing ductwork.
Rinnai heating and cooling controllers
Controllers affect how easy your system is to use and how well it manages comfort across your home. A poorly configured controller can make a good system feel difficult, inefficient or inconsistent.
We can help with:
* Controller setup
* Controller replacement advice
* Zoning setup
* Basic user guidance
* Troubleshooting control issues
* Wi-Fi or smart-control compatibility checks where supported
If your system is working but comfort is inconsistent, the issue may be related to settings, zoning, airflow or controller configuration rather than the main unit itself.
Rinnai multi split air conditioners
Rinnai multi split systems connect multiple indoor units to one outdoor unit. This can be useful for homes, apartments and townhouses where outdoor space is limited or where several rooms need individual temperature control.
We can help with:
* Multi split system design and installation
* Indoor unit placement
* Outdoor unit location planning
* System balancing and performance checks
* Repairs to indoor or outdoor units
* Advice on whether multi split or ducted air conditioning is the better option
A multi split system may suit homes where several rooms need heating and cooling but a full ducted system is not practical.
Rinnai Mini VRF air conditioners
Rinnai Mini VRF systems are designed for properties that need flexible heating and cooling across multiple areas. They can be suitable for larger homes, townhouses, offices and light commercial spaces where individual room control and efficient use of outdoor space are important.
We can help with:
* Mini VRF suitability checks
* System design support
* Installation planning
* Indoor unit layout advice
* Controller setup
* Fault diagnosis
* Servicing and maintenance
A Mini VRF system may be worth considering when a standard split system is too limited, but the property needs more flexibility than a basic ducted setup. We also compare VRF vs multi splits in this post.
Why choose ExtrordinAir for Rinnai service in Melbourne?
Local Melbourne team: ExtrordinAir is based at 32 Parer Road, Airport West VIC 3042 and services Melbourne’s inner suburbs. That local focus helps us respond to nearby homes and businesses quickly and understand the heating and cooling needs of Melbourne properties.
Heating and cooling experience: ExtrordinAir has provided heating and cooling solutions to Melbourne homes and businesses for 25 years.
Licensed and qualified technicians: Your Rinnai system should be serviced by people with the right qualifications, especially when gas, electrical or refrigeration work is involved. Our ARCTick Licence is AU29403 and BPC licence is 43459.
Clear quotes and no hidden costs: Before carrying out additional work, we explain what we have found and provide clear pricing for recommended repairs or replacements.
What to expect when you book
- Tell us what is happening: Call or submit a quote request with your suburb, system type, model number if available, and the issue you are experiencing.
- We confirm the right service: We will let you know whether you need servicing, fault diagnosis, repair assessment or a new installation quote. We’ll give you a verbal price over the phone for the required service, then follow up with a booking confirmation.
- A technician inspects the system: The technician checks the system, explains the issue and outlines the next steps.
- You approve the work: We provide pricing before completing additional repairs or replacement work.
- We leave you with practical advice: You will know what was done, what to watch for, and when your next service should be booked.
Before your appointment
To help us diagnose the issue faster, please have the following ready if possible:
- The Rinnai model number
- Photos of any error codes
- A description of the problem
- When the issue started
- Whether it affects heating, cooling or both
- Whether the system has been serviced recently
- Access to the indoor unit, outdoor unit, roof space, return air grille or heater location
Rinnai Air Conditioning FAQs
What is the warranty for Rinnai air conditioners?
From 1 April 2025, Rinnai introduced a 7-year warranty on a wide selection of air conditioning systems, including selected split systems, multi split systems and ducted reverse-cycle inverter systems. Warranty depends on the Rinnai model, product type, purchase date and application.
What do I do if my Rinnai air conditioner has a fault code?
Write down the fault code exactly as it appears, along with your model number if you can find it. For some split systems, try turning off the air conditioner, waiting about 10 minutes, and turn it on again – the issue may resolve itself. If the code returns, stop resetting the system and book a technician.
Where are Rinnai air conditioners made?
Rinnai is a Japanese-headquartered company, and Rinnai Australia is a subsidiary of Rinnai Japan Corporation. Rinnai Australia says it sources products locally and from Rinnai’s 40+ global manufacturing facilities. Exact country of manufacture can vary by model, so check the compliance plate, packaging, product documentation or warranty paperwork for the specific unit.
How does Rinnai compare to Midea?
Rinnai and Midea both offer a broad range of air conditioning options in Australia. Rinnai offers mini VRF systems, whereas Midea does not. The Rinnai brand is longer established and founded in Japan, whereas Midea was founded in China. Both have been around for decades and offer a minimum 5 year warranty on air conditioners (excluding portable systems). Midea is usually lower priced than Rinnai.
How do you reset a Rinnai air conditioner?
For a basic reset, turn the unit off using the remote, then switch the power off at the isolator or circuit breaker. Wait a few minutes before restoring power and turning the unit back on. Rinnai manuals note that after a power failure, you should wait about 3 minutes before turning the air conditioner back on.
If the system has an error code, some Rinnai split-system manuals suggest waiting about 10 minutes, then disconnecting and reconnecting power if the code does not clear. If the fault returns, book a service call rather than repeatedly resetting the unit.
Why is my Rinnai air conditioner leaking water?
Some condensation is normal during cooling, but water dripping down the wall or into the room is not something to ignore. A dirty filter can restrict airflow, cause the coil to freeze, and lead to water leakage when it defrosts. Other possible causes include a blocked drain, poor drainage, very high humidity, incorrect louvre position or an installation issue. Read our post to learn more about why your aircon may be leaking water.
Why is my Rinnai air conditioner not cooling?
Start with the simple checks: make sure the unit is set to cool, the temperature is set lower than the current room temperature, doors and windows are closed, and the indoor and outdoor units are not blocked. Dirty filters, blocked outdoor units, incorrect settings, heat load from sun or appliances, and low refrigerant can all reduce cooling performance. If cleaning the filters and checking settings does not fix the issue, the system may need a licensed technician to check refrigerant, electrical components, airflow, sensors or installation-related problems.
How do you clean Rinnai air conditioner filters?
Turn the power off first. Open the front cover, remove the air filter, then clean it with a vacuum cleaner or warm water. If the filter is very dirty, wash it in lukewarm water with mild detergent, dry it in the shade, and reinstall it securely in the same orientation. Read our guide to filter cleaning for more information.
Why is my Rinnai air conditioner not turning on?
Common causes include a power supply issue, tripped circuit breaker, blown fuse, flat remote-control batteries, timer settings, remote-control interference or the unit’s built-in restart protection. Some Rinnai units have a three-minute protection feature that prevents the system from restarting immediately after being turned off. Check the power, remote batteries, timer settings and circuit breaker first. If the unit still will not turn on, or if a breaker trips again after being reset, turn the air conditioner off and book a technician.
What is DF in Rinnai air conditioners?
DF usually means defrost. In heating mode, frost can build up on the outdoor coil in cold conditions. When this happens, the system may temporarily stop heating and run a defrost cycle so the outdoor coil can clear. DF is usually normal during heating operation. If DF appears constantly, the system will not heat properly, or the unit also shows an error code, book a service call.
What Our Clients Say About Working With ExtrordinAir Heating & Cooling
Book Rinnai air conditioning help in Melbourne
Need help with a Rinnai split system, multi split, ducted air conditioner, Mini VRF system, portable air conditioner or controller? Complete our form below to get in touch, or give our team a call on 1800 959 884.
