The Daikin FDYQN180LCV1 / RZQ180M2Y1 is a high-capacity reverse cycle ducted system designed for large homes, multi-storey properties, open-plan living areas, and commercial spaces with 3-phase power available. With inverter technology, a compact indoor profile, and quiet operation, it provides discreet year-round comfort while remaining hidden within the ceiling space.
With 18.0kW cooling and 20.0kW heating capacity, this model is ideal for larger homes, 5-bedroom properties, offices, and spaces around 100–150m² depending on insulation and layout. The inverter compressor can modulate output from 9.0kW up to 18.0kW in cooling mode and from 10.0kW up to 20.0kW in heating mode, helping improve efficiency and maintain stable indoor temperatures.
Key Features & Benefits
3-Phase Power Supply
This model operates on 380–415V 3-phase power, making it suitable for homes and commercial properties with 3-phase electrical supply. It can help reduce electrical load across circuits compared to large single-phase systems.
Advanced Inverter Technology
Daikin’s inverter technology continuously adjusts compressor speed to maintain a more stable indoor temperature while reducing energy use and operating noise compared to conventional fixed-speed systems. The system uses a hermetically sealed scroll compressor for reliable performance.
Compact Indoor Unit Design
The indoor unit has a height of approximately 470mm, making it suitable for larger roof spaces in modern homes. Indoor dimensions are approximately 470mm high, 1200mm wide, and 997mm deep, while the outdoor unit measures around 1430mm high, 940mm wide, and 320mm deep.
Strong Airflow Performance
The unit provides rated airflow of approximately 1160 litres per second, with maximum airflow up to 1200 litres per second. This helps deliver even conditioned air across multiple rooms and larger open-plan spaces. Indoor sound levels are approximately 45dBA on high speed.
Night Quiet Mode
Daikin’s Night Quiet Mode reduces outdoor operating noise during sleeping hours and automatically resumes normal operation in the morning, helping minimise disturbance to occupants and neighbours.
Improved Energy Efficiency
The system delivers an EER of 3.09 and COP of 3.27, helping reduce running costs while maintaining strong heating and cooling performance. Residential TCSPF ratings are approximately 3.61 in hot climates.
Long Pipe Run Capability
The system supports refrigerant pipe lengths up to 50 metres, making it suitable for larger homes and more complex ducted installations.
Wide Operating Range
The system can operate in cooling mode from -5°C to 43°C outdoor temperature and in heating mode from -20°C to 16°C outdoor temperature, making it suitable for year-round Australian conditions.
R410A Refrigerant
This 18kW model uses R410A refrigerant, which is common across Daikin’s larger-capacity ducted systems.
Wired Controller Included
The system is commonly supplied with Daikin’s BRC1E63 wired wall controller, providing simple scheduling, temperature control, and system management.
5-Year Manufacturer Warranty
Daikin ducted systems are backed by a 5-year manufacturer warranty for residential applications when professionally installed and maintained.
Ideal Applications
- Large homes
- Multi-storey properties
- Open-plan living areas
- 5-bedroom homes
- Offices
- Commercial spaces with 3-phase power
Why Choose the Daikin 18kW 3-Phase Inverter Ducted System?
The Daikin FDYQN180LCV1 / RZQ180M2Y1 is a powerful, efficient, and flexible ducted solution designed for larger homes and commercial spaces that already have 3-phase power available. With its strong airflow, inverter technology, Night Quiet Mode, and efficient 3-phase operation, it is an excellent option for properties needing reliable whole-home climate control.
