LG WS18TWS

Wall-mounted reverse-cycle inverter split-system air conditioner, rated 4.8 kW cooling and 5.9 kW heating in the regional manufacturer’s model table.

Model Identification

Brand: LG
Model / indoor-outdoor reference: WS18TWS
Region: Australia
Type: Wall-mounted reverse-cycle split system

Technical Specifications

Rated cooling: 4.8 kW
Rated heating: 5.9 kW
Control type: Inverter heat pump
Equipment pairing: Refer to regional manufacturer model table

Selection and Installation

Confirm climate design conditions, efficiency label, operating range, noise and manufacturer-approved indoor/outdoor pairing. Licensed refrigerant and electrical installation may be required. This equipment does not inherently supply outdoor ventilation air.

Official Manufacturer Source

Official regional model specification →

Independent AirAlign educational reference. Checked October 2026.

WS18TWS — 4.8 kW versus other LG WS sizes

LG WS18TWS has an Australian reference of 4.8 kW cooling and 5.9 kW heating, contrasting with the smaller 3.4/4.0 kW WS12TWS. The correct choice depends on measured room load and inverter range, since too much nominal capacity can increase cycling during mild weather. Confirm high-wall installation clearances, refrigerant line dimensions and regional control options from the exact LG brochure. This system is a complete inverter split reference, not a multi-split outdoor-only unit.