18 kWDaikin Inverter Ducted 18kW Ducted System
The 18kW Daikin 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 is the largest capacity in the Daikin Inverter Ducted range. For a smaller floor plan the 15.5kW avoids paying for unused capacity.
Based on official government test data for Sydney's climate zone, running costs are estimated at $791 per year for cooling and $1323 for heating, totalling around $2114 annually. These figures use a rate of 34.7 cents per kWh, the median of 170 Sydney residential plans as of June 2026.
The system carries a 1.5-star zoned energy rating for cooling and 1 star for heating under Sydney conditions. Its rated AEER is 3.00 and ACOP is 3.18, meaning it delivers roughly 3 units of cooling or heating for each unit of electricity consumed. The refrigerant is R410A.
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 Inverter Ducted range| Brand | Daikin |
|---|---|
| Model | FDYQN180LCV1 / RZQ180M2Y1 |
| Series | Daikin Inverter Ducted |
| System type | Ducted System |
| Capacity | 18 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
