Rinnai Hot Water Systems: Installation, Repair and Servicing
About Rinnai Hot Water Systems
In the early 1990s, Rinnai introduced Australia’s first fully electronic gas continuous flow hot water system, fundamentally changing how households accessed hot water. Rather than storing a fixed tank of heated water, continuous flow systems heat water on demand, which means hot water is available whenever it is needed without the risk of running out.
Today, Rinnai produces a broad range of hot water systems covering gas continuous flow, electric storage, and solar-boosted configurations. The range is designed around efficiency, water conservation, safety compliance, and reliability across Australian climate conditions.
Rinnai Electric Water Heaters
- High energy star ratings for reduced running costs
- Thermostat-controlled temperature settings for consistent output
- Durable tank construction intended for long service life
- Compliance with Australian water heating safety standards
To enquire about supply or installation of a Rinnai electric water heater, contact Hogan Hot Water and Air Conditioning on 0488 029 618.
Rinnai Gas Installation, Repair and Servicing
Rinnai gas water heaters deliver hot water on demand without the standby heat loss associated with storage systems. Because there is no tank holding water at temperature around the clock, energy is only consumed when a tap is running, which can reduce gas bills over time compared with a storage unit of equivalent capacity.
Hogan Hot Water and Air Conditioning installs and services Rinnai gas continuous flow systems across the range, from compact indoor units suited to smaller households through to high-capacity models that can supply multiple simultaneous outlets. The team handles full installation including gas line connection, flue routing, and commissioning, as well as fault diagnosis and repairs on existing units.
If you are unsure whether to replace an ageing storage system with a continuous flow unit, the gas hot water installation and replacement guide covers the key considerations for each scenario, including sizing, costs, and rebate eligibility.
Rinnai Gas Hot Water: At a Glance
Feature
Gas Continuous Flow
Electric Storage
Rinnai Servicing and Repairs: What to Expect
Regular servicing keeps a Rinnai hot water system operating safely and at rated efficiency. For gas systems in particular, servicing involves more than a visual check: a qualified technician should inspect the burner, heat exchanger, flue integrity, gas pressure, water inlet filter, temperature and pressure relief valve, and any electronic controls.
For electric storage units, a service typically includes inspection of the anode rod (which protects the tank from corrosion), the thermostat, the element, and all pressure-relief components.
- Burner and combustion check (gas units)
- Flue and ventilation inspection (gas units)
- Gas pressure verification against manufacturer specification (gas units)
- Anode rod inspection and replacement if required (electric and some gas storage units)
- Temperature and pressure relief valve test
- Water inlet filter clean
- Electronic controls and error code review
- Safety check against current Australian standards
Repairs are carried out using genuine or manufacturer-approved parts. If a unit is beyond economic repair, the team can advise on a like-for-like replacement or a system upgrade, including any current government rebate options that may apply.
Frequently Asked Questions
What Rinnai systems can be installed and serviced?
Hogan Hot Water and Air Conditioning works across the Rinnai range, including gas continuous flow (indoor and outdoor models), electric storage water heaters, and solar-boosted configurations. If you have an existing Rinnai unit of a model not listed here, contact the team directly on 0488 029 618 to confirm compatibility.
How often should a Rinnai hot water system be serviced?
As a general guide, Rinnai recommends that gas continuous flow systems be serviced every two years, while the anode rod in storage units should be inspected every five years at a minimum, or more frequently in areas with hard or high-mineral water.
Actual service intervals may vary depending on usage, water quality, and the specific model. Check the documentation supplied with your unit or confirm with a licensed technician for a recommendation specific to your system.
What makes Rinnai gas continuous flow systems different?
Unlike a storage system, a Rinnai continuous flow unit has no tank. Water passes through a heat exchanger and is warmed to the set temperature only when a tap or shower is opened. This means there is no stored volume to exhaust and no standby heat loss.
The trade-off is that flow rate and gas supply capacity need to be matched correctly to the household’s peak demand, which is one reason professional sizing and installation matters.
What should I do if my Rinnai system shows an error code?
Rinnai continuous flow units display alphanumeric error codes when a fault is detected. Common codes relate to ignition failure, water flow, or flue blockage. Do not attempt to reset a fault code related to gas or flue issues without having the unit inspected first.
Contact Hogan Hot Water and Air Conditioning on 0488 029 618 or refer to the fault code list in your Rinnai owner’s manual for initial guidance.