The Rinnai DINLR24Z7 / DONSR24Z9 is a high-capacity reverse cycle ducted air conditioning system designed for very large homes, offices, retail spaces, and commercial buildings that require strong airflow and long duct runs. With a high static indoor unit, 3-phase power supply, and powerful inverter compressor, this system is built for demanding whole-home heating and cooling applications. With 23.5kW cooling and 25.0kW heating capacity, this model is ideal for large multi-room homes, open-plan living areas, offices, and spaces around 100–150m² depending on insulation and layout. Cooling capacity can modulate from 11.8kW up to 30.5kW, while heating ranges from 12.5kW to 29.6kW, helping maintain stable temperatures while reducing energy use.

Key Features & Benefits

High Static Pressure Performance

The indoor unit delivers airflow up to approximately 1203 litres per second at 170Pa and supports a maximum external static pressure of 250Pa. This makes it suitable for long duct runs, multiple outlets, and large zoned ducted systems where strong airflow is essential.

3-Phase Power Supply

This model operates on 415V 3-phase power, making it ideal for larger homes and commercial properties with higher electrical demand. Maximum input current is approximately 23 amps with a recommended 40-amp circuit breaker.

Energy Efficient Inverter Technology

The system uses a DC inverter compressor to automatically adjust performance based on room conditions, helping deliver smoother temperature control and lower running costs than fixed-speed systems. It achieves an AEER of approximately 3.44 in cooling mode and an ACOP of approximately 3.43 in heating mode.

Strong Airflow for Large Spaces

Designed specifically for larger homes and commercial spaces, the unit provides powerful airflow across multiple zones and long duct runs. It is well suited to large open-plan homes, multi-storey residences, retail spaces, and office environments.

Programmable Wired Controller Included

The system includes a wired programmable controller, allowing users to easily adjust temperature, operating mode, fan speed, and scheduling. The controller is designed for simple day-to-day use and provides convenient management of whole-home comfort.

Quiet Operation

Despite its large capacity, the indoor unit operates at approximately 57dBA on high fan speed, 54dBA on medium, and 50dBA on low. Outdoor sound pressure level is approximately 60dBA.

Compact Indoor Unit Design

The indoor unit measures approximately 1454mm wide, 931mm deep, and 515mm high, while the outdoor unit measures approximately 1120mm wide, 528mm deep, and 1558mm high. Despite its capacity, the system remains compact enough for many residential roof spaces and commercial installations.

Long Pipe Run Capability

The system supports maximum refrigerant pipe runs of up to 60 metres, with a maximum vertical separation of 25 metres between indoor and outdoor units. This provides installers with greater flexibility for larger homes and complex layouts.

Wide Operating Range

The unit can cool in outdoor temperatures from -15°C to 46°C and heat from -15°C to 24°C, making it suitable for harsh Australian climate conditions year-round.

R410A Refrigerant

The system uses R410A refrigerant and comes pre-charged for pipe lengths up to 7.5 metres. Additional refrigerant can be added for longer pipe runs where required.

7 Year Warranty

Rinnai backs its larger ducted systems with a 7-year limited warranty, providing added peace of mind for long-term ownership.

Ideal Applications

• Very large homes
• Multi-storey homes
• Open-plan living areas
• Offices
• Retail spaces
• Commercial buildings
• Zoned ducted systems
• Homes with long duct runs

Why Choose the Rinnai DINLR24Z7 / DONSR24Z9?

The Rinnai DINLR24Z7 / DONSR24Z9 is a powerful and flexible ducted solution designed for larger homes and commercial spaces that require high airflow, strong static pressure, and reliable whole-building climate control. With its 3-phase power supply, inverter compressor technology, programmable controller, and large 24kW capacity, it is an excellent option for demanding ducted installations.