Fujitsu ARUH18KUAS & AOUH18KUAS1 18,000 BTU 18.6 SEER2 Mid Static Ducted Heat Pump System - R32

Fujitsu ARUH18KUAS & AOUH18KUAS1 – 18,000 BTU R‑32 Mid-Static Ducted Mini‑Split System
The Fujitsu ARUH18KUAS and AOUH18KUAS1 ductless mini-split system delivers powerful, discreet, and energy-efficient comfort with a mid-static ducted indoor unit. Perfect for small to mid-sized residential or commercial spaces (up to ~750 sq ft), this single-zone system uses eco-friendly R‑32 refrigerant and offers flexible installation with whisper-quiet performance, built-in drain pump, and advanced control options.

General Information
System Type: Mid-static ducted mini-split system (indoor & outdoor)
Indoor Model: ARUH18KUAS
Outdoor Model: AOUH18KUAS1
Capacity: 18,000 BTU Heating & Cooling
Room Size: Ideal for up to ~750 sq ft
Operating Modes: Heating & Cooling
ENERGY STAR®: Yes (ES, ESCC, ESME)
Refrigerant: R‑32, pre-charged; supports up to 98 ft line set

Key Features
Mid-Static Duct Design: Flexible installation with static pressure range of 0.12–0.80 inWG
Whisper-Quiet Operation: Indoor sound levels as low as 24 dB(A); outdoor as low as 52 dB(A)
Built-in Condensate Pump: Supports 24″ of lift for flexible drainage
High Efficiency: SEER2 of 18.6 and EER2 of 11.7 for energy-saving operation
Low Ambient Capability: Heating and cooling down to -5°F for reliable year-round performance
Advanced Controls: Supports wired, wireless, Wi-Fi, BACnet, Modbus, and 24V thermostat interfaces (accessories sold separately)
Enhanced Safety: Built-in refrigerant leak detection sensor
Flexible Intake Options: Side or bottom return configurations for varied installations
Durability: ProCore™ copper coils for corrosion resistance

Specifications (Rated Conditions)
Cooling Capacity (Rated/Min–Max):  18,000 BTU / 3,100 - 20,100 BTU
Heating Capacity (Rated/Min–Max): 21,600 BTU / 3,100 - 25,600 BTU
SEER2 / EER2: 18.6 / 11.7
HSPF2 (IV/V): 10.3 / 8.3
Sound Pressure (Indoor): 24-34 dB(A)
Sound Pressure (Outdoor): 52-55 dB(A)
Airflow (Cooling/Heating): Up to 618 CFM
Electrical: 208/230 V • 1‑Phase • 60 Hz
Piping Size: Liquid 1/4″ • Gas 1/2″ • Max Length: 98 ft • Max Height Diff: 49 ft
Indoor Unit Dimensions/Weight: 11-13/16″ × 39-3/8″ × 27-9/16″ • 90 lb
Outdoor Unit Dimensions/Weight: 24-7/8″ × 31-7/16″ × 11-7/16″ • 84 lb

Included Components
ARUH18KUAS mid-static ducted indoor unit
AOUH18KUAS1 outdoor condenser

Ideal For
Contractors, designers, and homeowners seeking a low-profile, highly adaptable ducted heating and cooling solution. Perfect for bedrooms, offices, finished basements, or retail areas where silent performance and hidden installation are key priorities.