Fujitsu ADUH18KUAS 18,000 BTU Slim Duct Indoor Unit - R32

Fujitsu ADUH18KUAS – 18,000 BTU R‑32 Slim‑Duct Mini‑Split Indoor Unit

Experience powerful, streamlined comfort with the Fujitsu ADUH18KUAS, an 18,000 BTU slim-duct indoor unit engineered for multi-zone ductless systems. Ideal for residential and light-commercial spaces up to ~750 sq ft.

Compact, Concealed Installation

With dimensions of approximately 7-13/16" x 35-7/16" x 24-7/16", the ADUH18KUAS fits discreetly into ceilings, soffits, or closets, providing flexible installation options without disrupting room aesthetics.

Quiet and Efficient Operation

Utilizing inverter-driven fan motors and eco-friendly R-32 refrigerant, this unit delivers energy-efficient heating and cooling while maintaining quiet operation as low as 29 dB(A). Multiple fan speeds and auto mode allow customized airflow control and optimized performance.

Built-In Filtration and Drainage

The unit includes a long-life washable air filter to trap dust and allergens, supporting better indoor air quality. A built-in drain pump ensures flexible condensate management, even in tight or elevated installations.

Smart Control Integration

Compatible with Fujitsu R‑32 multi-zone outdoor units, the ADUH18KUAS supports a variety of control methods including wired and wireless remotes and optional Wi-Fi adapters for app-based management via Fujitsu’s FGLair and AIRSTAGE Mobile platforms.

Cold-Weather Performance

When paired with an XLTH low-ambient outdoor unit, the ADUH18KUAS can support reliable heating down to –15°F. Features such as hot-start and auto-defrost ensure consistent comfort and performance during winter months.

Ideal for Mid-to-Large Spaces

Perfect for living rooms, master bedrooms, and open-concept areas where quiet, ducted comfort is needed without compromising style or space. The ADUH18KUAS offers reliable year-round climate control with discreet design and flexible integration.