8 kWMHI Bronte 8kW Split System
The 8kW MHI Bronte Split (model DXK28ZRA-W) is sized for open-plan living and dining areas. As a guide, it cools a room of up to about 57 to 67 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 9.5kW.
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 8 kW options, see every 8kW split system ranked by running cost, or ask about supply and installation.
About $605 a year at the current Sydney median electricity rate: $221 of cooling plus $384 of heating, from the official GEMS test figures.
The MHI Bronte 8kW uses 666 kWh annually for cooling and 1159 kWh annually for heating according to official GEMS test data for Sydney's climate zone. These figures represent standard test conditions and will vary with your actual usage patterns, thermostat settings and home characteristics.
The system carries a 3.5-star energy rating for cooling and 2.5-star rating for heating under the zoned energy label for Sydney. It delivers a rated cooling efficiency (AEER) of 3.58 and heating efficiency (ACOP) of 3.73. The unit 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 Bronte WF1 Split range| Brand | Mitsubishi Heavy Industries |
|---|---|
| Model | DXK28ZRA-WF1 |
| Series | MHI Bronte WF1 Split |
| System type | Split System |
| Capacity | 8 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
