The LG S4-Q24K2RTD is a 2.5HP Dualcool split air conditioner. The indoor unit mounts on the wall and is driven by LG’s DUAL Inverter Compressor, which varies its speed instead of switching fully on and off. That is what gives the unit its fast cooling and its lower energy use once the room has reached temperature.

Front view of the white LG wall mounted indoor unit with the air outlet louvre open and the number 20 shown on the panel — The temperature only shows on the front while the unit is working. Set it and the panel goes back to plain white, so there is no glowing figure across the bedroom wall at night.

Key Features

The room cools down quickly, then costs less to hold. The DUAL Inverter Compressor ramps up for fast cooling and then settles to a lower speed rather than cycling off and on.
Quiet enough to leave running while you sleep or work. LG rates the unit for low noise operation.
A lower power setting for long spells of use. GEN Mode runs the compressor at reduced power.
Nothing bright on the wall when the lights go off. The display is hidden in the front panel.
Sits flat and plain above a door or window. Simple slim casing in white, with the louvre closing flush when the unit is off.

Side angle of the indoor unit with the louvre closed, showing the shallow depth of the white casing — Closed up, the front is a smooth panel with only the LG mark on it, which keeps it from standing out in a sitting room.

This listing covers the indoor unit shown. Cooling capacity in BTU, the recommended room size and the electrical figures are worth confirming before installation.