Description
SUZ-AA09NL-SLZ-AF09NL is a Mitsubishi Electric single-zone heat pump system built around a four-way ceiling-recessed cassette. The SLZ-AF indoor unit sits flush in the ceiling, keeping walls clean and furniture-friendly. The SUZ-AA outdoor unit is a standard heat pump matched one-to-one for predictable performance. This NL generation uses R-454B refrigerant, aligning with A2L low-GWP equipment direction. The four-way discharge is designed to spread comfort evenly instead of pushing air in one line. Buyers choose this style when they want ductless efficiency with a finished, built-in look. It’s a strong fit for bedrooms, offices, and open living areas where appearance matters.
Rated cooling capacity is 9,000 BTU/h, with a listed maximum of 9,000 BTU/h. Minimum cooling capacity is listed at 2,300 BTU/h, which helps reduce stop-start cycling in mild weather. Moisture removal is listed at 0.7 pints per hour to support a more comfortable indoor feel. Rated cooling power input is 680 W, giving shoppers a clean number for energy comparisons. Sensible heat factor is listed at 0.91, showing a temperature-focused cooling balance at this size. In real use, the variable-capacity behavior helps hold setpoint steadier than legacy on/off equipment. That steady feel is what turns a spec sheet into a satisfied customer.
Rated heating capacity at 47°F is 12,000 BTU/h, with a listed maximum of 12,800 BTU/h. Minimum heating capacity at 47°F is listed at 4,900 BTU/h for smoother shoulder-season operation. Heating capacity at 17°F is listed at 7,800 BTU/h as a practical cold-night reference point. Heating at 5°F lists a maximum capacity of 6,300 BTU/h for continued output in lower temperatures. COP at 47°F is listed at 3.8, supporting an efficiency-forward heating story. HSPF2 is listed at 11.8, which helps buyers understand seasonal heating value. If the goal is efficient electric heat without giving up comfort, this pairing fits.
Airflow rate at cooling, dry is listed at 230, 265, or 300 CFM depending on fan speed. The cassette uses four discharge vanes and supports many airflow pattern options for different room layouts. Indoor sound pressure levels are listed at 25, 28, or 31 dB(A) based on fan speed selection. Outdoor sound pressure is listed at 48 dB(A) in cooling and 50 dB(A) in heating. SEER2 is listed at 21.0 and EER2 is listed at 13.2 for clear efficiency comparisons. The overall experience is even comfort delivery that stays controlled and refined. That combination is exactly what shoppers want when they’re paying for a premium ceiling cassette.
Electrical is listed at 208/230V single-phase 60 Hz, which is common for this category. Recommended fuse or breaker size is listed at 15 A for straightforward planning. The ceiling cassette format helps keep supply air distributed across the occupied zone. It’s an ideal upgrade when a customer wants comfort without visible wall-mounted equipment. It also works well for spaces where wall space is valuable or design matters. On a product page, the clean look plus strong published efficiency makes the value easy to explain. If you want a compact, high-efficiency ceiling cassette system, this is the one.
Key Features
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Four-way ceiling cassette style: Flush, ceiling-recessed comfort delivery with four discharge vanes.
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R-454B A2L low-GWP platform: NL generation refrigerant type listed as R-454B.
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Cooling performance: 9,000 BTU/h rated cooling, 2,300 BTU/h minimum, 0.7 pints/h moisture removal.
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Heating performance: 12,000 BTU/h rated at 47°F, 7,800 BTU/h at 17°F, 6,300 BTU/h max at 5°F, COP 3.8 at 47°F.
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Efficiency ratings: 21.0 SEER2, 11.8 HSPF2, 13.2 EER2.
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Airflow and sound context: 230/265/300 CFM (cooling, dry) and 25/28/31 dB(A) indoor sound levels by fan speed.
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Purchase note: Grille is sold separately.
Replaces Discontinued Models
- SUZ-AA09NL replaces: SUZ-KA09NA, SUZ-KA09NA2, SUZ-KA09NAR1
- SLZ-AF09NL replaces: SLZ-KA09NA, SLZ-KA09NAR1, SLZ-KF09NA, SLZ-KF09NA1
Replacement matches are based on unit type, capacity and features. Verify line set, electrical supply and controls before ordering. See the discontinued Mitsubishi model cross-reference for details and original manuals.
White Paper
- Mitsubishi SLZ-AF09NL + SUZ-AA09NL System Spec Sheet
- Mitsubishi SLZ-AF09NL Spec Sheet
- Mitsubishi SLZ-AF Series Installation Manual (Part 1 of 4)
- Mitsubishi SLZ-AF Series Installation Manual (Part 2 of 4)
- Mitsubishi SLZ-AF Series Installation Manual (Part 3 of 4)
- Mitsubishi SLZ-AF Series Installation Manual (Part 4 of 4)
- Mitsubishi SUZ-AA Series Operation Manual (Part 1 of 2)
- Mitsubishi SUZ-AA Series Operation Manual (Part 2 of 2)
- Mitsubishi SLZ-AF Series Service Manual (Part 1 of 2)
- Mitsubishi SLZ-AF Series Service Manual (Part 2 of 2)
- Mitsubishi SUZ-AA Series Installation Manual
- Mitsubishi SUZ-AA Series Service Manual
