Mitsubishi MLZ-KX09NL & SUZ-AA09NLHZ 9,000 BTU 16.7 SEER2 One-Way Ceiling Cassette Hyper Heating Heat Pump System (w/ Grille) - R454B

Mitsubishi MLZ-KX09NL & SUZ-AA09NLHZ: 9,000 BTU Ceiling-Cassette Hyper-Heating Heat Pump System

The Mitsubishi MLZ-KX09NL & SUZ-AA09NLHZ is a sleek, 9,000 BTU 1-way ceiling cassette heat pump system designed for discreet, high-performance comfort in homes and light commercial spaces. Featuring advanced Hyper-Heating INVERTER® (H2i®) technology, it delivers full-rated heating capacity at 5°F and reliable operation down to -13°F. The compact MLZ-KX09NL indoor unit fits between standard 16" ceiling joists for a flush, low-profile look, while the SUZ-AA09NLHZ outdoor unit offers durable inverter-driven efficiency and Blue Fin corrosion protection.

Ideal for small rooms up to ~350 sq ft, this single-zone system provides quiet comfort, customizable airflow, smart Wi-Fi control, and energy-saving performance in a space-saving ceiling-mounted form.

General Information

System Type: 1-Way Ceiling Cassette Indoor Unit + Hyper-Heating Outdoor Unit
Model Numbers: Indoor – MLZ-KX09NL / Outdoor – SUZ-AA09NLHZ
Capacity: 9,000 BTU Cooling / 11,400 BTU Hyper-Heating (Up to 14,500 BTU)
Ideal Room Size: ~350 sq ft
Operating Mode: Heating & Cooling
Energy Star Certified: Yes
Refrigerant: R454B (Factory-charged)

Key Features

Hyper-Heating INVERTER® (H2i®) Technology
Full-rated heating at 5°F; reliable performance down to -13°F outdoor temperatures.

EZ FIT Ceiling Installation
Slim cassette fits between standard 16" joists for flush, grille-only appearance.

Built-in Condensate Lift Pump
19.6" lift height simplifies drainage in ceiling-mounted setups.

Whisper-Quiet Operation
Indoor sound levels as low as 27 dB(A) for unobtrusive comfort.

Blue Fin Coating
Protects the outdoor coil against corrosion in humid or coastal environments.

Advanced Filtration
Washable antibacterial and deodorizing filters improve air quality.

Smart Comfort Control
Compatible with Mitsubishi Electric’s Comfort app, handheld remote, and wired wall controllers.

Auto Vane & Hot-Start Technology
Motorized airflow and draft-free heating start-up for enhanced comfort.

Specifications

Cooling Capacity: 9,000 BTU (Range: 2,200–9,000 BTU)
Heating Capacity: 11,400 BTU Rated / 14,500 BTU Max
EER2: 12.3
HSPF2: 9.7
COP @ 47°F: 4.1
COP @ 17°F: 2.6
Voltage: 208/230V, 1-Phase, 60Hz
Airflow Rate: 201–311 CFM (Cooling)
Indoor Sound Levels: 27–38 dB(A) (Cooling), 26–37 dB(A) (Heating)
Piping: 3/8 in. (Gas) / 1/4 in. (Liquid)

Included Components

Indoor Unit: MLZ-KX09NL
Grille: MLP-449W
Outdoor Unit: SUZ-AA09NLHZ
Controller: Hand-held IR Remote

Optional Accessories

Indoor Unit: Wi-Fi Interface, Wired Wall Controller, Enhanced Air Filter, CN24 Relay Kit
Outdoor Unit: Base Pan Heater, Drain Socket, Wall-Mount Bracket, Air Outlet Guide

Ideal For:
Homeowners and small business owners seeking a compact, ultra-quiet, and energy-efficient ceiling-mounted hyper-heating solution with smart control options for rooms up to 350 sq ft—even in freezing conditions.