18 kWDaikin Premium Inverter Ducted 18kW Ducted System
The 18kW Daikin Premium Inverter Ducted is sized for large two-storey family homes. As a guide it covers roughly 120 to 144m² of conditioned floor area, depending on zoning, insulation and ceiling height. It sits in the upper half of the Daikin Premium Inverter Ducted range. For more bedrooms or a larger floor plan, the 20kW is the next step up.
Based on official government test data for Sydney's climate zone, this 18 kW system uses 1,598 kWh of electricity per year for cooling and 2,555 kWh for heating. At the median Sydney residential rate of 34.7 cents per kWh (170 plans, June 2026), that works out to roughly $555 for cooling, $887 for heating, and $1,442 combined annually.
The system holds a 2.5-star zoned energy rating for both cooling and heating in the Sydney zone. Its rated AEER is 3.43 and its rated ACOP is 3.99, meaning it delivers 3.43 units of cooling and 3.99 units of heating for every unit of electricity consumed. Refrigerant is R32.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs · Refreshed monthly · Last updated June 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the Daikin Premium Inverter Ducted range| Brand | Daikin |
|---|---|
| Model | FDYA180AV1 / RZAS180DY1 |
| Series | Daikin Premium Inverter Ducted |
| System type | Ducted System |
| Capacity | 18 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
