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.
Part of the Daikin Premium Inverter Ducted range, Daikin's ducted system line, in 10 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 $1,375 a year at the current Sydney median electricity rate: $529 of cooling plus $846 of heating, from the official GEMS test figures.
The Daikin Premium Inverter Ducted 18kW uses 1598 kWh per year for cooling and 2555 kWh per year for heating, based on official GEMS test data for Sydney's climate zone. Both cooling and heating carry a 2.5 star energy rating. The system has a rated cooling efficiency of 3.43 AEER and heating efficiency of 3.99 ACOP, and uses R32 refrigerant.
Running costs depend on your local electricity rate and actual usage patterns, which vary by household. The energy figures above are standard test values; your consumption will differ based on how often you operate the system, your thermostat settings, and home insulation.
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 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 |
