The LG UHS125SET is a high static reverse cycle ducted air conditioning system designed for larger homes, offices, and commercial spaces that require long duct runs, strong airflow, and flexible zoning. It includes the indoor UHN125B7 unit, outdoor UU125WR2 unit, and the LG PREMTB100 wired wall controller for simple day-to-day operation. With 12.5kW cooling and 15.0kW heating capacity, this model is ideal for large open-plan homes, multi-room properties, offices, and spaces around 55–90m² depending on insulation and layout. It can modulate from 4.0kW to 14.8kW in cooling mode and from 4.0kW to 16.5kW in heating mode, helping maintain more stable temperatures while reducing energy use.

Key Features & Benefits

High Static Pressure Performance

The system is designed for demanding ducted installations with long duct runs and multiple outlets. Rated airflow ranges from approximately 480 litres per second up to 1,083 litres per second, helping maintain strong and even airflow across larger homes and zoned areas.

Single-Phase Power Supply

This model operates on standard 220–240V single-phase power, making it suitable for most residential properties without requiring a 3-phase electrical upgrade. The system uses a 25-amp circuit breaker and has a maximum current draw of approximately 29 amps.

Energy Efficient Inverter Scroll Compressor

The system uses an inverter scroll compressor to provide smoother temperature control, quieter operation, and lower running costs than fixed-speed systems. It delivers an AEER of approximately 3.679 and an ACOP of approximately 3.899.

Strong Airflow Performance

This model is built for larger homes and commercial spaces where strong airflow is essential. The larger duct connections and high static design help distribute conditioned air evenly across multiple rooms and long duct layouts.

Compact Indoor Unit Design

The indoor unit measures approximately 1320mm wide, 400mm high, and 534mm deep, while the outdoor unit measures approximately 950mm wide, 1380mm high, and 330mm deep. Despite its large capacity, the system remains compact enough for many residential and commercial roof spaces.

Wi-Fi and 8-Zone Compatible

The system is compatible with optional Wi-Fi control and can support up to eight zones, allowing users to independently manage airflow to different areas of the property for improved comfort and energy savings.

Quiet Operation

Outdoor sound pressure levels are approximately 53dBA in cooling mode and 54dBA in heating mode, helping maintain quieter operation for a system of this size and capacity.

Long Pipe Run Capability

The system supports refrigerant pipe runs up to 85 metres with a maximum height difference of 30 metres between the indoor and outdoor units. This provides installers with greater flexibility for larger homes and more complex layouts.

Wide Operating Range

The unit can operate in outdoor temperatures from -15°C to 48°C in cooling mode and from -18°C to 18°C in heating mode, making it suitable for Australian conditions year-round.

R32 Refrigerant

The system uses modern R32 refrigerant, which provides improved efficiency and lower environmental impact compared to older refrigerants.

PREMTB100 Controller Included

This system includes the LG PREMTB100 wired wall controller for easy temperature adjustment, operating mode selection, timer functions, and day-to-day system management.

Ideal Applications

• Large homes
• Open-plan living areas
• Multi-room homes
• Offices
• Commercial spaces
• Homes with long duct runs
• Zoned ducted systems

Why Choose the LG UHS125SET?

The LG UHS125SET is a powerful and flexible ducted solution designed for larger homes and commercial spaces that require strong airflow, high static pressure, and zoning flexibility. With its inverter scroll compressor, Wi-Fi compatibility, included PREMTB100 controller, and large 12.5kW cooling capacity, it is an excellent option for demanding ducted installations.