3.5 kWMHI Avanti Plus 3.5kW Split System
The 3.5kW MHI Avanti Plus Split (model SRK35ZSXA-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 AvantiPlus WF 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 3.5 kW options, see every 3.5kW split system ranked by running cost, or ask about supply and installation.
About $232 a year at the current Sydney median electricity rate: $80 of cooling plus $152 of heating, from the official GEMS test figures.
The MHI Avanti Plus 3.5kW uses 241 kWh per year for cooling and 460 kWh per year for heating, based on official government test data for Sydney's climate zone. The system carries a 4-star energy rating for cooling and 3.5-star rating for heating under the zoned energy label.
Efficiency is measured by AEER (cooling) and ACOP (heating) ratings. This model has an AEER of 4.66 and an ACOP of 4.72. The unit uses R32 refrigerant. Your running costs depend on the kWh figures above and your local electricity rate, which is displayed separately on this page.
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 AvantiPlus WF Split range| Brand | Mitsubishi Heavy Industries |
|---|---|
| Model | SRK35ZSXA-WF |
| Series | MHI AvantiPlus WF Split |
| System type | Split System |
| Capacity | 3.5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
