Mitsubishi MLZ-KX09NL & SUZ-AA09NL 9,000 BTU 21.6 SEER2 One-Way Ceiling Cassette Heat Pump System (w/ Grille) - R454B

Mitsubishi MLZ-KX09NL & SUZ-AA09NL: 9,000 BTU One-Way Ceiling Cassette Heat Pump System

The Mitsubishi MLZ-KX09NL & SUZ-AA09NL is a high-efficiency 9,000 BTU heat pump system featuring a sleek, one-way ceiling cassette indoor unit. Engineered for discreet ceiling-mounted installation, this system is ideal for rooms where wall or floor space is limited. The compact MLZ-KX09NL blends seamlessly into shallow ceiling cavities, while the SUZ-AA09NL outdoor unit offers reliable and quiet year-round performance with INVERTER technology, Blue Fin anti-corrosion protection, and advanced energy-saving features.

Perfect for single-zone applications in residential or light commercial settings, this system delivers whisper-quiet comfort, customizable airflow direction, and smart control capabilities including Wi-Fi compatibility via the Mitsubishi Comfort app.

General Information

• System Type: One-Way Ceiling Cassette Heat Pump System

• Model Numbers: Indoor – MLZ-KX09NL / Outdoor – SUZ-AA09NL

• Capacity: 9,000 BTU Cooling / 12,000 BTU Heating

• Room Size: Ideal for spaces up to ~350 sq ft

• Operating Mode: Heating & Cooling

• Energy Star Certified: Yes

• Refrigerant: R454B (1 lb, 11.83 oz)

Key Features

INVERTER-Driven Compressor
Adjusts output dynamically to maintain stable temperatures while reducing energy usage.

Slim Ceiling Cassette Design
Low-profile indoor unit fits between standard 16" joists—ideal for retrofits and tight attic installations.

Quiet Operation
Designed for ultra-quiet indoor and outdoor performance to maintain peaceful environments.

4-Speed Fan with Auto Mode
Offers variable fan speeds for customizable comfort and efficient air distribution.

Horizontal Airflow
One-way directional airflow offers better room coverage than traditional wall-mounted units.

Blue Fin Anti-Corrosion Coating
Enhances durability of the outdoor unit, particularly in coastal or harsh weather environments.

Powerful Mode
Rapidly cools or heats by temporarily maximizing fan speed and compressor output.

Auto Restart Function
Resumes operation automatically after power outages, maintaining user settings.

Wi-Fi & Smart Controls
Compatible with Mitsubishi Comfort app, wired/wireless controllers, and third-party smart home systems.

Optional i-see Sensor
Enhances comfort with intelligent occupancy-based temperature adjustment (sold separately).

Specifications

• Cooling Capacity: 9,000 BTU (3,800–9,000 BTU range)

• Heating Capacity: 12,000 BTU (5,200–13,600 BTU range)

• EER2: 11.8

• HSPF2: 12.2

• COP at 47°F: 3.8

• COP at 17°F: 3

• Voltage: 208/230V, 1-Phase, 60Hz

• Airflow Rate (Cooling/Heating): 447 / 494 CFM

• Piping: Gas – 3/8 in. / Liquid – 1/4 in.

Included Components

• Indoor Unit: MLZ-KX09NL

• Outdoor Unit: SUZ-AA09NL

• Accessories: Hand-held Remote Controller

Optional Accessories

• Indoor Unit: Wi-Fi Interface, Wired Remote Controller, i-see Sensor, Decorative Grille Panel

• Outdoor Unit: Wall-Mount Bracket, Drain Socket, Wind Baffle Kit

Ideal For:
Homeowners, property managers, and small businesses seeking a discreet, ceiling-mounted heat pump solution that combines quiet operation, energy efficiency, and advanced controls for consistent year-round comfort.