6.3 kWMHI Bronte WF1 6.3kW Split System
The 6kW MHI Bronte Split (model DXK21ZRA-W) is sized for large living rooms and small open-plan areas. As a guide it suits a typical insulated room of roughly 40 to 48m²; sun exposure and ceiling height move that band. It is the smallest capacity in the MHI Bronte Split range. If the space is bigger, has high ceilings or strong afternoon sun, step up to the 7.1kW.
Part of the MHI Bronte WF1 Split range, Mitsubishi Heavy Industries's split system line, in 5 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 $378 a year at the current Sydney median electricity rate: $141 of cooling plus $237 of heating, from the official GEMS test figures.
The MHI Bronte WF1 6.3kW uses 489 kWh annually for cooling and 819 kWh annually for heating under official GEMS testing conditions for Sydney's climate zone. These figures represent the system's actual energy consumption across a typical year and form the basis for running cost calculations.
The system carries a 3.5-star cooling efficiency rating and 3-star heating efficiency rating under the zoned energy labelling scheme for Sydney. It achieves a rated cooling efficiency of 3.96 AEER and heating efficiency of 4.41 ACOP. The exact running cost depends on your current electricity rate, which is calculated separately based on these verified energy consumption figures.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs · Refreshed monthly · Last updated September 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the MHI Bronte WF1 Split range| Brand | Mitsubishi Heavy Industries |
|---|---|
| Model | DXK21ZRA-WF1 |
| Series | MHI Bronte WF1 Split |
| System type | Split System |
| Capacity | 6.3 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
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