Mitsubishi MSZ-EX18NLW & SUZ-AA18NLHZ 18,000 BTU 17.5 SEER2 Wall Mounted Hyper Heat Pump System - R454B - MSZEX18NLW/SUZAA18NLHZ
The Mitsubishi MSZ‑EX18NLW indoor unit paired with the SUZ‑AA18NLHZ outdoor condenser delivers efficient 16,400 BTU cooling and powerful 20,000 BTU Hyper‑Heating output. Designed as a single‑zone package—but with an EX‑series head that can also join multi‑zone builds—this inverter‑driven mini‑split provides whisper‑quiet, year‑round comfort for rooms up to 750 sq ft, maintaining 100 % heating capacity at 5 °F and reliable operation down to ‑22.5 °F thanks to a factory‑installed base‑pan heater. It runs on low‑GWP R‑454B refrigerant for a greener footprint.
Features
INVERTER Technology: Variable‑speed compressor for energy‑efficient, responsive performance
Hyper‑Heating Performance: Maintains 100 % heating capacity at 5 °F; reliable heat to -22.5 °F
Single‑ or Multi‑Zone Flexibility: EX indoor unit supports single‑zone installs and multi‑zone expansion
Base‑Pan Heater: Factory‑installed to prevent ice buildup in frigid conditions
Dual Barrier Coating & Advanced Filtration: Protects coil and improves indoor air quality
Quiet Operation: Indoor sound levels as low as 30 dB(A) for discreet comfort
Smart Control Ready: Works with wireless/wired remotes and Mitsubishi Comfort app
What Our Experts Think
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18,000 BTU wall-mounted Hyper-Heat system ideal for single-zone spaces up to ~750 sq ft.
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Provides 16,400 BTU cooling and 20,000 BTU Hyper-Heating output for year-round comfort.
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Maintains 100% heating capacity at 5 °F; reliable operation down to –22.5 °F with base-pan heater.
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Whisper-quiet inverter-driven mini-split with ENERGY STAR efficiency.
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Uses low-GWP R454B refrigerant for environmentally responsible performance.
Q&A
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Q: What size area is suitable for this system?
A: Ideal for single-zone rooms up to ~750 sq ft.
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Q: Can it handle cold climates?
A: Yes, Hyper-Heating maintains full output at 5 °F and operates down to –22.5 °F.
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Q: Can it join multi-zone builds?
A: Yes, the EX-series head can integrate into multi-zone systems.
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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 indoor 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 wall-mount bracket and unit alignment periodically.
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Ensure condensate lines remain clear to prevent water damage.
