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.
Part of the Daikin Inverter Ducted range, Daikin's ducted system line, in 12 sizes. Running costs below use the Sydney median rate; the Eastern Suburbs and Western Sydney pages cost systems on their own network tariffs. Check the size against your rooms, compare it with other 18 kW options, or ask about supply and installation.
About $2,018 a year at the current Sydney median electricity rate: $755 of cooling plus $1,263 of heating, from the official GEMS test figures.
The Daikin Inverter Ducted 18kW uses 2280 kWh annually for cooling and 3811 kWh annually for heating under standard test conditions in Sydney's climate zone. These are official GEMS registration figures. The system carries a 1.5-star cooling energy rating and a 1-star heating energy rating for Sydney.
The Daikin Inverter Ducted 18kW has a rated AEER of 3.00 for cooling and an ACOP of 3.18 for heating. Running costs will depend on your electricity rate and actual usage patterns, which vary by household and season.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs, including GST · Refreshed monthly · Last updated October 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 |
