2.5 kWMHI Ciara 2.5kW Split System
The 2.5kW MHI Ciara Split (model DXK09ZTLA-W) is sized for standard bedrooms and small home offices. As a guide, it cools a room of up to about 18 to 21 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 3.5kW.
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 2.5 kW options, see every 2.5kW split system ranked by running cost, or ask about supply and installation.
About $183 a year at the current Sydney median electricity rate: $67 of cooling plus $116 of heating, from the official GEMS test figures.
The MHI Ciara 2.5kW uses 201 kWh per year for cooling and 350 kWh per year for heating under the standard GEMS test conditions for Sydney's climate zone. These figures are based on official energy label data and show the energy your system would consume in a typical year in this zone.
The system holds a 3-star energy rating for both cooling and heating. It achieves a rated cooling efficiency (AEER) of 4.18 and a heating efficiency (ACOP) of 4.43. The unit operates on R32 refrigerant. Your actual running costs will depend on how much you use the system and your electricity rate.
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 | DXK09ZTLA-WF |
| Series | MHI Ciara Split |
| System type | Split System |
| Capacity | 2.5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
