6 kWMitsubishi Electric SEZ-M 6kW Bulkhead / Slim Duct
The 6.0 kW step in the bulkhead range for zones of up to about 45 to 50 square metres, still on single phase power. 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.
Part of the Mitsubishi Electric SEZ-M Bulkhead range, Mitsubishi Electric's bulkhead / slim duct 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 kW options, or ask about supply and installation.
About $551 a year at the current Sydney median electricity rate: $196 of cooling plus $355 of heating, from the official GEMS test figures.
The Mitsubishi Electric SEZ-M 6kW uses 591 kWh annually for cooling and 1073 kWh annually for heating, based on GEMS test data for Sydney's climate zone. The unit carries a 2.5-star cooling energy rating and a 2-star heating energy rating on the zoned energy label for Sydney.
Efficiency is measured by AEER for cooling at 3.41 and ACOP for heating at 3.65. The system uses R32 refrigerant. Your running costs depend on how often you use cooling and heating, local electricity rates, and your thermostat settings.
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 Mitsubishi Electric SEZ-M Bulkhead range| Brand | Mitsubishi Electric |
|---|---|
| Model | SEZ-M60DA3 |
| Series | Mitsubishi Electric SEZ-M Bulkhead |
| System type | Bulkhead / Slim Duct |
| Capacity | 6 kW |
| Refrigerant | R32 |
| Outdoor units | SUZ-M VAD2 series |
| Power | 230V single phase |
