Rasonic RS-U18CW 2 HP R32 Inverter Cooling-only Window Split Air Conditioner

The RS-U18CW is a Rasonic 2 HP R32 inverter cooling-only window split air conditioner. Its outdoor unit RU-U18CW is smaller in width, height and depth than the brand's inverter window air conditioner of the same horsepower, suiting homes that want to keep window ledge space. According to the official website's room size guide, it suits rooms of up to about 170 sq ft.

RU-U18CW outdoor unit is 370mm shallower than the brand's 2 HP inverter window air conditioner, cutting the depth by almost half

The RU-U18CW outdoor unit measures 651 x 419 x 430mm (W x H x D), while the brand's 2 HP inverter window air conditioner RC-SUL180B measures 660 x 428 x 800mm (W x H x D). The outdoor unit is 9mm narrower and 9mm lower.

This series is powered through the indoor unit; base the air conditioner socket position on where the indoor unit will be installed.

Cooling capacity 5.31kW, suited to rooms of up to about 170 sq ft according to the official website guide

The rated cooling capacity of the RS-U18CW is 18,110 BTU/h. The guide is based on rooms with concrete partitions. The cooling capacity actually needed also depends on sunlight, windows and doors, and the number of people in the room; for a room that faces west, has a lot of glass, is near a kitchen or is often used by many people, consider a model with higher cooling capacity than the guide suggests.

Inverter control adjusts the operating power to hold a steady temperature while saving energy. This air conditioner has a Grade 1 energy label from the Electrical and Mechanical Services Department, with annual cooling energy consumption of 512kWh, making it easy to compare long-term electricity costs with other air conditioners.

Quick cooling reaches the set temperature fast, and sleep mode adjusts gradually to avoid overcooling

When you come home in hot weather, switch on quick cooling manually and the room reaches the set temperature as soon as possible. With sleep mode on, the air conditioner adjusts the temperature and fan speed gradually to avoid overcooling after you fall asleep.

To reduce fan noise at night, switch to quiet mode. In humid weather, gentle dehumidification runs at a low fan speed, cooling gently while lowering indoor humidity.

Two on/off timers repeat daily, and the louvre swings up and down automatically

The two on/off timers repeat daily once set, to suit a fixed routine; the on timer starts up to 30 minutes early. After a power cut, once power returns the air conditioner restarts automatically with its previous mode and airflow direction.

The louvre swings up and down automatically to distribute air, while the left-right airflow direction is adjusted manually.

Before you buy

• Dimensions (W x H x D): outdoor unit 651 x 419 x 430mm, indoor unit 890 x 295 x 235mm; measure the reserved space before installation.
• The indoor unit must be installed at least 1.8m above the floor, and the refrigerant piping can be up to 20m long.
• Whether scaffolding is needed for installation or repair depends on the site conditions.
• Weight: indoor unit 11kg, outdoor unit 32kg.
• Warranty: 1-year full unit, 5-year compressor.
• The same series also includes the 1 HP RS-U9CW and the 1.5 HP RS-U12CW.