4.2 kWPanasonic Z Series 4.2kW Split System
The 4.2kW Panasonic Z Series (model CS-Z42AKRW) is sized for living rooms and master suites. As a guide it suits a typical insulated room of roughly 28 to 34m²; sun exposure and ceiling height move that band. Like the rest of the Z Series it runs nanoe X air purification around the clock. If the space is bigger, has high ceilings or strong afternoon sun, step up to the 5kW.
The Panasonic Z Series 4.2kW uses 338 kWh per year for cooling and 626 kWh per year for cooling according to GEMS official test data for Sydney's climate zone. These figures account for typical usage patterns in Sydney's weather. The system achieves a rated cooling efficiency (AEER) of 3.53 and heating efficiency (ACOP) of 3.82, meaning it delivers that many kilowatts of heating or cooling output for each kilowatt of electricity consumed.
The Panasonic Z Series 4.2kW carries a 3.5-star cooling energy rating and 2.5-star heating energy rating under Australia's zoned energy labelling system for Sydney. Running costs depend on your local electricity rate and actual usage. The unit uses R32 refrigerant.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs · Refreshed monthly · Last updated June 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the Panasonic Z Series Deluxe Split range| Brand | Panasonic |
|---|---|
| Model | CS-Z42AKRW |
| Series | Panasonic Z Series Deluxe Split |
| System type | Split System |
| Capacity | 4.2 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
