Rinnai MVRFON6H20 Mini VRF Multi Split System Review

If your home has more than one comfort zone, your air conditioning system should, too. The Rinnai MVRFON6H20 Mini VRF system is built for Australians who want control, flexibility, and efficiency across their homes. Whether it's a large double-storey home, a compact office, or a growing household with separate comfort needs, this model delivers precision comfort without the bulk of traditional ducted systems.

And the best part? It's eligible for an air conditioning rebate in Victoria, giving you long-term savings on both your bills and upfront costs. This is our review that explores how this Mini VRF model performs, what makes it suitable for modern households, and how it fits into Victoria's rebate ecosystem.

Table of Contents

1. About Rinnai & the MVRFON6H20
2. Technical Specs & Features
3. Performance & Energy Use
4. Installation Considerations
5. Durability & Warranty
6. Is This Model Eligible for a Rebate?
7. Final Thoughts
8. FAQs

Rinnai is a leading provider of home climate solutions in Australia, trusted for high-performance, energy-conscious systems. The MVRFON6H20 is part of Rinnai's Mini VRF outdoor series, supporting multi-zone cooling and heating with advanced inverter technology.

Its compact size and scalable connectivity make it ideal for homes or light commercial setups requiring climate control in multiple rooms. With a strong focus on energy efficiency, this model supports both cooling and heating via multiple indoor units, operating smoothly across temperature extremes.

It's also built with Australia's clean energy future in mind and, when installed correctly, will qualify under the Victorian Energy Upgrades (VEU) scheme for a substantial air conditioner rebate.

Here’s a breakdown of the key specifications for the Rinnai MVRFON6H20 Mini VRF outdoor unit MVRFON6H20:

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Now this outdoor unit is compatible with 8 indoor units of the Rinnai Multisplit range, here are the heating and cooling capacities for these indoor units.

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Source: Rinnai

This model balances strong heating performance with energy efficiency, making it well-suited for Victoria’s cool climate. The use of R410A refrigerant and inverter technology also helps improve long-term energy savings.

The Rinnai MVRFON6H20 offers reliable year-round performance. With 20 kW cooling and 23.5 kW heating, it can comfortably serve multi-room properties without energy wastage.

The system's VRF (Variable Refrigerant Flow) logic ensures that each connected indoor unit receives only the cooling or heating it needs, reducing overconsumption. This contributes to better efficiency, lower electricity bills, and quieter operation.

Zoning Adaptability: Each indoor unit independently modulates its refrigerant flow, allowing temperature precision in each room and reducing strain on the system.

Its smart compressor control adapts to internal demand and outdoor conditions in real time, making it suitable for homes with varying usage patterns. You can run the living room and kitchen during the day, then shift to bedroom zones at night, all without running the full system at high load.

Real-Time Efficiency: The system's inverter-driven compressor dynamically adjusts RPM based on the zone load, improving operational efficiency and minimising energy spikes during load transitions.

This mini VRF system has some installation requirements:

1. Single-Phase Power:The RInnai Mini VRF works with single phase power supply.
2. Multiple Indoor Units: Best suited for homes that require 3–6 indoor heads, such as bedrooms, study, lounge and kitchen.
3. Space for Outdoor Unit: The outdoor condenser needs 1 metre clearance on all sides for heat dissipation.
4. Professional Installation: Only certified VRF installers should handle the setup for performance and warranty compliance.

Rinnai offers a wide range of compatible indoor heads, including wall-mounted and ducted types. This makes it easier to customise your comfort zones.

Rinnai’s reputation for longevity is supported here with several key build features:

1. Inverter Compressor: Enables quieter operation and smoother load balancing.
2. Anti-Corrosion Fin Coating: Improves lifespan in humid or coastal regions.
3. Robust Outdoor Housing: Designed to resist harsh weather while maintaining compact dimensions.

The system comes with a 7-year warranty, provided installation is done by an authorised technician.

Yes. The Rinnai MVRFON6H20 qualifies for the Victorian Energy Upgrades (VEU) program, provided it is installed to replace an existing inefficient system.

This eligibility is due to its strong COP of 4.33, inverter operation and use of R410A refrigerant, which meets energy performance standards required under the VEU program.

If you are replacing an old gas heating or electric resistance system, this upgrade could entitle you to a significant air conditioning rebate. The program requires a minimum customer contribution of $1,000, but your upfront cost may be considerably lower.

To check your eligibility, book a free site assessment with EcoOrigin. We’ll recommend the best rebate-qualified system based on your home’s layout and power setup.

The Rinnai MVRFON6H20 Mini VRF multi-split system is a modern, scalable alternative to both split and ducted setups. It’s particularly useful for multi-zone homes where each space has a unique usage pattern.

Thanks to its energy-efficient operation and flexible zoning, it delivers real-world savings and comfort. And with potential access to the air conditioner rebate in Victoria, the upfront investment becomes much easier to manage.

Its compatibility with multiple indoor units, broad operating range and inverter compressor design offer a scalable climate control solution suitable for both new constructions and renovation upgrades.

If you’re planning a full-system upgrade or building a new Temperature-regulated home, this Rinnai model is worth your shortlist, especially when supported by a rebate-backed installation from EcoOrigin.

1. Is Rinnai a good Multi split system?

Yes, Rinnai split systems are well-regarded for their reliability, energy efficiency and quiet operation. Their mini VRF systems, like the MVRFON6H20, offer scalable climate solutions suited to modern Australian homes.

2. What is the difference between VRF and multi-split?

VRF (Variable Refrigerant Flow) systems allow for simultaneous variable control of refrigerant to each indoor unit, making them highly efficient and flexible. Multi-split systems typically control multiple indoor units from one outdoor unit but lack the independent modulation that VRF systems provide.

3. What is a VRF mini split system?

A mini VRF split system combines the space-saving design of a multi-split with the climate control of a full-scale VRF system. It’s ideal for residential or light commercial use with moderate climate control complexity.

4. What is the difference between VRF and mini VRF?

The difference lies in scale and capacity. VRF systems are designed for large commercial buildings with dozens of indoor units, while mini VRF systems are scaled-down versions suited to residential or small commercial properties, usually supporting up to 6 indoor units.

5. What is the power requirement?

The Rinnai Mini VRF model MVRFON6H20 operates on single-phase power. The specifications are as follows:

Power Supply: 220-240 V – 1 – 50 Hz

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