2.5 kWMitsubishi Electric SLZ-M 2.5kW Cassette System
The 2.5 kW compact cassette suits offices and rooms of up to about 18 to 21 square metres with a flush, furniture-free ceiling finish. 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 SLZ-M Compact Cassette range, Mitsubishi Electric's cassette system line, in 4 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 2.5 kW options, or ask about supply and installation.
About $207 a year at the current Sydney median electricity rate: $74 of cooling plus $133 of heating, from the official GEMS test figures.
The Mitsubishi Electric SLZ-M 2.5kW uses 224 kWh annually for cooling and 400 kWh annually for heating, based on official GEMS testing for Sydney's climate zone. These figures reflect typical usage patterns in Sydney and allow you to calculate running costs against current local electricity rates. The system carries a 2.5-star energy rating for both cooling and heating under the zoned labelling scheme.
The unit operates at a rated cooling efficiency (AEER) of 3.93 and heating efficiency (ACOP) of 3.76. It uses R32 refrigerant. Running costs depend on your actual usage, local electricity tariffs and how you operate the system, but the official annual energy consumption figures provide a reliable basis for comparison.
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 SLZ-M Compact Cassette range| Brand | Mitsubishi Electric |
|---|---|
| Model | SLZ-M25FA3-A |
| Series | Mitsubishi Electric SLZ-M Compact Cassette |
| System type | Cassette System |
| Capacity | 2.5 kW |
| Refrigerant | R32 |
| Outdoor units | SUZ-M VAD2 series |
| Power | 230V single phase |
