5 kWMitsubishi Electric SEZ-M 5kW Bulkhead / Slim Duct
The 5.0 kW SEZ covers up to about 36 to 43 square metres, a fit for media rooms or two small adjoining bedrooms fed from one concealed unit. 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 5 kW options, or ask about supply and installation.
About $430 a year at the current Sydney median electricity rate: $167 of cooling plus $263 of heating, from the official GEMS test figures.
The Mitsubishi Electric SEZ-M 5kW is rated at 2.5 stars for both cooling and heating under the GEMS zoned energy label for Sydney. Based on official Sydney climate test data, the system uses 504 kWh per year for cooling and 793 kWh per year for heating. These figures represent typical annual energy consumption for the tested conditions and provide a reliable basis for estimating running costs with your local electricity rate.
The unit achieves a rated cooling efficiency (AEER) of 3.52 and heating efficiency (ACOP) of 3.57. The system uses R32 refrigerant. Your actual energy use will depend on your usage patterns, thermostat settings, home insulation and local climate variation throughout the year.
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-M50DA3 |
| Series | Mitsubishi Electric SEZ-M Bulkhead |
| System type | Bulkhead / Slim Duct |
| Capacity | 5 kW |
| Refrigerant | R32 |
| Outdoor units | SUZ-M VAD2 series |
| Power | 230V single phase |
