Mitsubishi SLZ-AF09NL 9,000 BTU Four-Way Ceiling Cassette Indoor Unit (Unit Only) - R454B - SLZAF09NL

Mitsubishi SLZ-AF09NL 9,000 BTU Four-Way Ceiling Cassette Indoor Unit (Unit Only) - R454B - SLZAF09NL

Bring discreet, powerful comfort with the Mitsubishi SLZ‑AF09NL, a flush‑mounted ceiling cassette unit designed for efficient heating and cooling in single‑zone or multi‑zone systems.

Compact & Efficient Performance
Delivers 9,000 BTU for cooling (11,000 BTU heating) using INVERTER-driven technology and R‑454B refrigerant—balanced efficiency and eco-friendly performance. 

Sleek, Ceiling‑Recessed Design
Fits flush into a 2’ × 2’ ceiling grid with a low-profile appearance ideal for offices, retail, or living spaces.

360° & Multi‑Vane Airflow
Four-way airflow with independent vane control ensures even, customizable coverage for complete room comfort. 

Quiet & Reliable Operation
Operates at whisper‑quiet levels (25–31 dB(A)) with a built-in 33″ condensate lift—ensuring quiet comfort and spill-free drainage. 

Flexible System Compatibility
Ideal for pairing with outdoor units like SUZ‑AA09NL in efficient single-zone or multi-zone systems; compatible with wired/wireless controls and Comfort App.

Trusted Mitsubishi Quality
Backed by Mitsubishi’s 10‑year warranty when installed by a licensed contractor and registered within 90 days—ensuring peace of mind and durability.

What Our Experts Think

• Sleek 9,000 BTU four-way ceiling cassette designed for uniform airflow and quiet operation.

• Provides discreet, ceiling-mounted comfort for offices, commercial spaces, and medium-sized rooms.

• Compact, low-profile design fits between standard ceiling joists for easy installation.

• Inverter technology ensures energy-efficient operation with precise temperature control.

• R454B-compatible for next-generation multi-zone systems, offering long-term efficiency and compliance.

Q&A

• Q: Does this include the outdoor unit?
  A: No—this is the indoor unit only and requires a compatible Mitsubishi outdoor unit.

• Q: What size space is this suitable for?
  A: Ideal for medium-sized rooms around 300–450 sq. ft., depending on insulation.

• Q: Is it noisy?
  A: No—engineered for whisper-quiet operation suitable for commercial or residential spaces.

• Q: How many directions does it distribute airflow?
  A: Four-way airflow ensures even temperature distribution throughout the room.

Maintenance Tips

• Clean air filters every 3–6 months for optimal airflow and efficiency.

• Schedule annual professional maintenance to inspect coils, refrigerant lines, and electrical connections.

• Keep ceiling area around the unit free of dust and debris.

• Ensure the cassette remains level to prevent drainage issues.