Mitsubishi SEZ-AD09NL & SUZ-AA09NLHZ 9,000 BTU 14.8 SEER2 Horizontal Ducted Hyper Heat System - R454B - SEZAD09NL/SUZAA09NLHZ
The Mitsubishi SEZ‑AD09NL paired with the SUZ‑AA09NLHZ Hyper‑Heat outdoor unit delivers high-efficiency, cold-climate performance in a compact 9,000 BTU single-zone ducted system. Designed for rooms up to ~350 sq ft, it’s ideal for bedrooms, offices, or any space needing discreet, powerful year-round comfort—even in sub-zero conditions.
With Hyper‑Heat INVERTER technology and R‑454B refrigerant, this system maintains consistent heating even at outdoor temps as low as -13°F, while a compact design (just 7-7/8″ height) enables installation in tight ceiling cavities or soffits. Blue Fin anti‑corrosion coating protects the outdoor coil for durability in coastal or humid climates.
Ultra-quiet operation (as low as 23 dB[A]) and smart control options via the kumo cloud app or compatible remotes ensure a seamless comfort experience, backed by ENERGY STARefficiency.
Key Features
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Hyper‑Heat Technology: Delivers reliable heating at outdoor temps down to -13°F
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INVERTER-Driven Compressor: Maintains steady comfort and high part-load efficiency
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Ultra-Slim Profile: Fits tight ceiling spaces with just 7-7/8″ unit height
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Quiet Comfort: Indoor sound as low as 23 dB(A) for unobtrusive operation
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Integrated Drain Pump: Simplifies installation and moisture removal
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Blue Fin Coil Coating: Enhances corrosion resistance for longer system life
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Smart Control Options: Compatible with kumo cloudapp, remote controls, and third-party thermostats
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Energy Efficient: ENERGY STARcertified for year-round savings
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Discreet Ducted Design: Provides even, room-wide airflow without visible indoor units
What Our Experts Think
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9,000 BTU horizontal-ducted Hyper-Heat system ideal for single-zone spaces up to ~350 sq ft.
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Efficient 14.8 SEER2 rating ensures reliable year-round heating and cooling, even in sub-zero conditions.
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Compact ducted design provides discreet installation in bedrooms, offices, or small spaces.
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Quiet operation delivers comfortable climate without disturbance.
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Uses eco-friendly R454B refrigerant with durable construction for long-lasting performance.
Q&A
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Q: What size area is suitable for this system?
A: Ideal for single-zone spaces up to ~350 sq ft.
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Q: Can it operate in cold climates?
A: Yes, Hyper-Heating ensures reliable performance in sub-zero temperatures.
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Q: Where can it be installed?
A: Horizontal-ducted configuration fits ceilings, attics, or tight mechanical spaces.
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Q: What refrigerant does it use?
A: R454B, a low-GWP, environmentally friendly refrigerant.
Maintenance Tips
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Clean or replace filters monthly to maintain airflow and efficiency.
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Schedule annual professional maintenance for refrigerant and system checks.
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Keep outdoor unit free of debris for optimal performance.
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Inspect ductwork and mounting periodically for stability.
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Ensure condensate lines remain clear to prevent water damage.
