6.3 kWMHI Ciara 6.3kW Split System
The 6kW MHI Ciara Split (model DXK21ZTLA-W) is sized for large living rooms and small open-plan areas. As a guide, it cools a room of up to about 47 to 54 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 7.1kW.
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 6.3 kW options, or ask about supply and installation.
About $484 a year at the current Sydney median electricity rate: $171 of cooling plus $313 of heating, from the official GEMS test figures.
The MHI Ciara 6.3kW uses 516 kWh per year for cooling and 946 kWh per year for heating under official GEMS testing conditions for Sydney's climate zone. These figures reflect typical annual energy consumption and form the basis of the running cost estimate shown separately on this page, which updates with current Sydney electricity rates.
The system carries a 3.5-star cooling efficiency rating and 2.5-star heating efficiency rating for Sydney. Its rated cooling efficiency (AEER) is 3.40 and heating efficiency (ACOP) is 3.51. It uses R32 refrigerant.
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 | DXK21ZTLA-WF |
| Series | MHI Ciara Split |
| System type | Split System |
| Capacity | 6.3 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
Other 6.3kW options
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Mitsubishi Electric MFZ-KW 6.1kW
Model MFZ-KW60VGK-A1. Floor mounted, Built-in Wi-Fi
Mitsubishi Electric MSZ-LN 6.1kW
Model MSZ-LN60VG. Flagship split, EER up to 5.10