How Good Are Rinnai Air Conditioners? A Detailed Review

A scorching sun, a broken aircon… and a sweaty nightmare.

Picture this.

It’s the middle of January in Australia. The pavement is melting. The flies are aggressive. And your house? It’s hotter than a toaster in the Sahara.

You flick the aircon remote with desperate hope… and nothing. Or worse, warm air.

That’s when you ask: how good are Rinnai air conditioners really?

Are they powerful enough? Energy-efficient? Worth the money? Or are they just another brand with a shiny brochure?

This guide answers that, in real terms. We explore performance, types, efficiency, costs, warranties, and whether a Rinnai AC will actually help you beat the heat (without beating your wallet).

Rinnai AC Overview 

Rinnai is more than just a hot water brand

Rinnai is a Japanese brand that has been a household name in Australia for over 50 years. While it’s best known for its hot water systems, Rinnai has also earned a solid reputation in air conditioning.

Rinnai air conditioners are designed with:

• Australian climate in mind
• Advanced energy-saving technology
• A wide range of models for all home sizes
• Reliable, durable components backed by generous warranties

Whether you’re suffering from heatwaves in Adelaide or seeking comfort in cool Melbourne winters, Rinnai has systems that can tailor their performance to suit you. 

Key features of Rinnai Air Conditioners 

If you’re like most Australians, you probably spend about 40% of your energy bill on heating and cooling your home.

This is where Rinnai steps in. They have developed a range of air conditioners with smart energy-saving functionality, whilst maintaining the comfort you expect.

Here are some key energy-efficient components of Rinnai air conditioners.

• Inverter compressor technology that adjusts power based on room needs
• Demand Response Enabling Devices (DRED) for smarter energy usage during peak periods
• Brushless DC motors that reduce friction and energy waste
• Energy recovery systems in some models redirect waste heat to warm water tanks
• Some Rinnai units can cut your power bills by up to 65%, according to internal testing under ideal conditions.

Is Rinnai Good Value For Money?

• Affordability is more than just an upfront cost; it also includes long-term running expenses, efficiency, and potential repair frequency.
• The affordability of Rinnai air conditioning systems is determined by elements such as:
• Mid-range pricing versus other premium brands
• Lifespan of 10-15 years
• Minimal maintenance and easy filter cleaning to keep units running efficiently
• Generous 7-year warranty, showing brand confidence

Rinnai offers performance on par with Mitsubishi Electric or Fujitsu but often at a slightly lower price, especially once you factor in rebates and reduced power bills.

Types of Rinnai Air Conditioners 

The Rinnai range includes something for almost everyone. Whether you live in a studio flat or a multi-zone home, there’s a Rinnai system that fits.

Rinnai Split System Air Conditioners

Split systems are perfect for cooling or heating individual rooms or small apartments.

Key features of Rinnai split systems are:

• Reverse-cycle function (cools in summer, heats in winter)
• Quiet operation and inverter tech
• Built-in Wi-Fi, remote control, and self-cleaning functions
• Models designed for extreme Aussie temperatures: Up to 52°C in heat or -15°C in cold.

Rinnai’s split system series includes:

✅ C Series: Compact and efficient

✅ D Series: Sleek with modern features

✅ J Series: Reliable, affordable units

✅ Q Series: Higher efficiency and powerful performance

These are ideal for rooms with stable use: bedrooms, studies, or media rooms.

Rinnai Ducted Air Conditioners

Ducted systems offer whole-home comfort from a single, hidden unit.

Key features of Rinnai ducted systems are:

• Powerful airflow that covers multiple rooms
• Zoning controls for setting different temperatures in each area
• Slimline indoor units with only discreet vents visible
• Reverse-cycle options from 7.1kW to 24kW, including Geoflo models for geothermal use

These are best for medium to large homes with multiple rooms that require consistent climate control. Wi-Fi programming and daily timers make these ducted systems convenient and energy-conscious.

Rinnai Multi-Head Split Systems

Multi-head systems are ideal for homes where you want to cool or heat multiple rooms but only have space for one outdoor unit.

Key features of Rinnai multi-head split systems are:

• Multiple indoor units are powered by one external unit
• Options include wall-mounted units and slim ducted ceiling units
• Built-in Wi-Fi (for wall-mounted models only)
• Air filtration and reverse-cycle function
• Cooling capacity ranges from 4.5kW to 18.5kW, with heating up to 18.5kW. Units like the Rinnai MON6H18B are designed for large spaces and excellent energy control.

If you have a growing family or extended living zones, these units provide flexible comfort.

Rinnai Evaporative Coolers (Brivis by Rinnai)

If you live in a dry climate, evaporative coolers are a natural and cost-effective cooling method. Rinnai offers these through their Brivis brand, known for smart cooling in SA and WA.

Key features of Rinnai evaporative coolers are:

• Natural cooling using water and fresh outside air
• Minimal electricity use and reduced carbon output
• Water-saving technology and self-cleaning functions
• Advanced cooling pads and seals to stop draughts

These are ideal for regions like Melbourne, Adelaide, and Perth, but not recommended for humid climates like Queensland.

Other Climate Products from Rinnai

In addition to fixed systems, Rinnai also offers:

• Portable air conditioners are ideal for renters or temporary use
• Gas space heaters and ducted heating for winter warmth
• Remotes and control replacements, which are easily available across Australia

While Rinnai is not a heavy hitter in large-scale commercial systems, their products are excellent for homes and small business spaces.

How much do Rinnai air conditioners cost in Australia?

Prices depend on system type, capacity, and installation complexity.

Typical prices for Rinnai air conditioners in Australia are:

System Type	Unit Cost Estimates	Installed Price
Split Systems	$1,100 – $3000	Varies by room size
Ducted System	$2,700 – $7,200	$8,000 – $12,000+
Multi-head units	$1,099 – $3,999+	Varies with the heads

Installation costs depend on home layout, zone control, ductwork, and wiring.

Are Rebates Available for Rinnai Units

Rinnai air conditioners may qualify for state and local energy rebates, especially if you install a high-efficiency model.

Some of the rebates available in Australia include:

• Victoria’s VEU Program (up to $8,000 for split systems)
• NSW Energy Savings Scheme
• South Australia Retailer Energy Productivity Scheme (REPS)
• Local council and solar rebates in some regions

Eligibility depends on:

✅ Your postcode

✅ The specific Rinnai model

✅ Installation by a licensed provider

✅ The system’s energy rating (not just brand name)

Always check with a certified installer to confirm what rebates apply to you.

What About Warranty and Support?

Rinnai offers a 7-year warranty on most residential systems. This includes parts and labour for eligible units installed by licensed professionals.

Key warranty features of Rinnai air conditioners are:

• Protection against manufacturing faults
• Australia-wide service network
• Easy access to spare parts and repairs

How good are Rinnai air conditioners? Final verdict

If you want a reliable, efficient, and customer-supported air conditioning brand in Australia, Rinnai is a solid option. 

What makes Rinnai so good:

• Made to handle harsh Australian climates
• Full of smart and energy saving technology
• Rugged and durable, with long warranties
• Broad product range to suit every home
• Rebates and cost savings make it more affordable than it seems

After reading the above post on how good Rinnai air conditioners are, you can clearly make up your mind on what your home needs.”

Commonly Asked Questions (Consumer Queries)