3.5 kWMHI Avanti 3.5kW Split System
The 3.5kW MHI Avanti Split (model SRK35ZSA-W) is sized for large bedrooms and smaller living rooms. As a guide, it cools a room of up to about 25 to 29 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 5kW.
Part of the MHI Avanti WF1 Split range, Mitsubishi Heavy Industries's split 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 3.5 kW options, see every 3.5kW split system ranked by running cost, or ask about supply and installation.
About $226 a year at the current Sydney median electricity rate: $86 of cooling plus $140 of heating, from the official GEMS test figures.
The MHI Avanti 3.5kW uses 259 kWh per year for cooling and 423 kWh per year for heating under standard government test conditions in Sydney's climate zone. These figures are based on GEMS registration data and represent the official energy consumption for the system's rated capacity. Running costs depend on your local electricity rate and how often you run the unit.
The system carries a 4-star cooling energy rating and 3-star heating energy rating for Sydney. It delivers a rated cooling efficiency (AEER) of 4.20 and heating efficiency (ACOP) of 4.50, using R32 refrigerant. These efficiency metrics indicate how much cooling or heating output you receive per kilowatt of electricity consumed.
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 Avanti WF1 Split range| Brand | Mitsubishi Heavy Industries |
|---|---|
| Model | DXK12ZSA-WF1 |
| Series | MHI Avanti WF1 Split |
| System type | Split System |
| Capacity | 3.5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
