Fujitsu AUUH42KUAS 42,000 BTU Circular-Flow Ceiling Cassette Indoor Unit - R32

Fujitsu AUUH42KUAS – 42,000 BTU AIRSTAGE Centauri R-32 Circular-Flow Ceiling Cassette Indoor Unit

Deliver quiet, efficient, and customizable indoor comfort with the Fujitsu AUUH42KUAS , a 42,000 BTU-class AIRSTAGE Centauri circular-flow ceiling cassette indoor unit. Designed for use with the AOUH42KUAS1 outdoor unit , this advanced indoor unit combines powerful airflow, intelligent controls, optional Wi-Fi connectivity, and durable coil technology in a discreet ceiling-mounted design for dependable year-round comfort.

Quiet, Comfortable Operation
Designed with comfort in mind, the AUUH42KUAS provides multiple fan speed settings including Auto, High, Med, Low, and Quiet . Sound levels reach as low as 36 dB(A) in Quiet mode, helping maintain comfortable temperatures without excessive indoor noise. Specialized operating modes include Economy Mode, Energy Saving Mode, Powerful Mode, Minimum Heat Mode, automatic defrosting, and auto-restart .

High-Efficiency Inverter Performance
When paired with the AOUH42KUAS1 outdoor unit as the complete 42KUAS1U system, the AUUH42KUAS benefits from Fujitsu’s inverter-driven technology, which continuously adjusts output to match changing comfort demands. The matched system achieves up to 19 SEER2 , 10.8 EER2 , 10.4 HSPF2 (Region IV) , 8.2 HSPF2 (Region V) , and 3.68 COP2 for efficient year-round heating and cooling performance.

Wide Modulating Capacity Range
When matched with the AOUH42KUAS1, the system provides a rated cooling capacity of 42,000 BTU/h , with cooling output modulating from approximately 13,600 to 45,000 BTU/h . Rated heating capacity reaches 47,000 BTU/h , with heating output ranging from approximately 14,300 to 51,000 BTU/h . The system also delivers approximately 32,000 BTU/h of rated heating capacity at 17°F , with a maximum of 41,000 BTU/h , and 37,000 BTU/h at 5°F , supporting dependable cold-weather comfort. This broad modulation range allows the system to closely respond to changing indoor loads for improved temperature control and efficiency.

Flexible Airflow & Powerful Circulation
The AUUH42KUAS uses a turbo fan and circular-flow cassette design to distribute conditioned air throughout the room for balanced comfort. Cooling and heating airflow reach up to approximately 1,177 CFM , with additional airflow settings of 971 CFM on Medium, 859 CFM on Low, and 765 CFM in Quiet mode . Multiple fan settings allow users to balance powerful room circulation with quieter operation as needed.

Advanced Controls & Optional Wi-Fi
The AUUH42KUAS features an enhanced controls platform designed for convenient everyday operation. An optional IR receiver and wireless remote controller kit provides intuitive wireless control, while optional Wi-Fi connectivity enables remote monitoring and control through the AIRSTAGE Mobile App . The compatible UTY-TFSXJ4 Wi-Fi adapter is available separately and is required for AIRSTAGE Mobile connectivity. An optional occupancy sensor can further support energy savings by responding to room usage.

Enhanced Third-Party Connectivity
For more advanced control applications, the AUUH42KUAS supports a wide selection of optional interfaces and accessories. Compatible solutions include wired controllers, 24V thermostat interfaces, BACnet®, Modbus®, external input/output controls, and AIRSTAGE Edge . Built-in external input and output capabilities support integration with devices such as fire alarms, door switches, humidifiers, and auxiliary heating systems. Group control functionality also allows multiple indoor units to be managed simultaneously, making the unit suitable for residential, commercial, and building-management applications.

Advanced Scheduling & Convenience Features
Built-in scheduling options provide greater control over system operation throughout the day and week. Available functions include a Weekly Timer, 24-hour Timer, and Sleep Function , helping users customize operation around their schedules while reducing unnecessary runtime. Additional features include auxiliary heat control logic, service monitoring through compatible accessories, and automatic restart for enhanced convenience and system management.

Built-In Drain Pump & Optional Fresh Air Integration
The AUUH42KUAS includes a built-in condensate drain pump for efficient moisture removal, helping simplify installation and support reliable operation. The indoor unit provides moisture removal capacity of approximately 9.3 pints per hour . An optional fresh air intake kit allows outdoor air to be introduced into the system, providing additional installation flexibility and supporting improved indoor air quality when properly configured.

Durable ProCore™ Coil Technology
Built for long-term reliability, the indoor unit features Fujitsu ProCore™ high-corrosion-resistant copper coils , providing added protection against corrosion. This enhanced coil construction helps support durability and dependable system performance over time.

Compact Ceiling Cassette Design
Measuring approximately 11-5/16″ H × 33-1/16″ W × 33-1/16″ D and weighing approximately 64 lb , the AUUH42KUAS provides substantial heating and cooling capability in a streamlined ceiling-mounted footprint. Its circular-flow design helps distribute conditioned air throughout the space while preserving valuable wall and floor area. Optional white and black cassette grilles allow the unit to complement a variety of interior styles. The grille is sold separately, providing additional customization flexibility for residential and commercial installations.

Ideal for homeowners and businesses seeking quiet operation, powerful circular airflow, advanced controls, optional Wi-Fi connectivity, efficient condensate management, and reliable year-round comfort , the Fujitsu AUUH42KUAS AIRSTAGE Centauri circular-flow ceiling cassette indoor unit provides a versatile indoor solution when paired with the compatible AOUH42KUAS1 outdoor heat pump.