5 kWMHI Ciara 5kW Split System
The 5kW MHI Ciara Split (model DXK18ZTLA-W) is sized for living rooms and master suites. As a guide, it cools a room of up to about 36 to 43 m². That is from Mitsubishi Heavy Industries' sizing chart for an insulated room: the larger figure if it faces north, the smaller if it faces east. Western sun, poor insulation and high ceilings bring it down. If the space is bigger, has high ceilings or strong afternoon sun, step up to the 6kW.
Part of the MHI Ciara Split range, Mitsubishi Heavy Industries's split system line, in 7 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 5 kW options, see every 5kW split system ranked by running cost, or ask about supply and installation.
About $406 a year at the current Sydney median electricity rate: $152 of cooling plus $254 of heating, from the official GEMS test figures.
The MHI Ciara 5kW uses 459 kWh annually for cooling and 766 kWh annually for heating under official GEMS testing for Sydney's climate zone. These figures reflect typical usage patterns in Sydney and form the basis of running cost calculations. The system holds a 3-star energy rating for cooling and 2.5-star rating for heating under the zoned labelling scheme.
Efficiency is measured by AEER (cooling) and ACOP (heating), rated at 3.12 and 3.55 respectively. The system uses R32 refrigerant. Your actual energy consumption will depend on how often you run the unit and the temperatures you set.
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 MHI Ciara Split range| Brand | Mitsubishi Heavy Industries |
|---|---|
| Model | DXK18ZTLA-WF |
| Series | MHI Ciara Split |
| System type | Split System |
| Capacity | 5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
