12.5 kWLG 12.5kW Ducted System
The 12.5 kW size of the LG Ducted, typically zoned across roughly 81 to 100 square metres of conditioned area depending on layout and insulation. Runs on single phase power. We confirm duct design and sizing from your floor plan before quoting.
Based on GEMS testing in Sydney's climate zone, the LG 12.5kW uses 1149 kWh annually for cooling and 2261 kWh for heating. These official figures let you calculate running costs using your current electricity rate. The system rates 2.5 stars for cooling efficiency and 2 stars for heating efficiency under Sydney conditions.
The LG 12.5kW achieves a cooling efficiency rating of 3.68 AEER and heating efficiency of 3.90 ACOP. It uses R32 refrigerant. Your actual energy consumption will vary based on how often you run the system, your thermostat settings and seasonal conditions in your location.
Source: Australian GEMS registry · median of 150 Sydney residential tariffs · Refreshed monthly · Last updated July 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the LG Ducted range| Brand | LG |
|---|---|
| Model | UU125WR3 |
| Series | LG Ducted |
| System type | Ducted System |
| Capacity | 12.5 kW |
Other 12.5kW options
All ducted systems
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Model AC120TNHPKG / AC120TXAPKG. Whole home, SmartThings

Fujitsu Mid Static Slimline Ducted 12.5kW
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Toshiba Super Digital Inverter 12.5kW
Model RAV-GM1401DTP-A / RAV-GP1401ATP-A. High static, Top efficiency tier