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Mitsubishi SEZ-AD18NL & SUZ-AA18NLHZ 18,000 BTU 17 SEER2 Horizontal Ducted Hyper Heat System - R454B - SEZAD18NL

Mitsubishi SEZ-AD18NL & SUZ-AA18NLHZ 18,000 BTU 17 SEER2 Horizontal Ducted Hyper Heat System - R454B - SEZAD18NL

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Mitsubishi SEZ-AD18NL & SUZ-AA18NLHZ 18,000 BTU 17 SEER2 Horizontal Ducted Hyper Heat System - R454B - SEZAD18NL

The Mitsubishi SEZ‑AD18NL & SUZ‑AA18NLHZ is an 18,000 BTU Hyper‑Heating ducted system ideal for up to 750 sq ft. It offers 100% heating at 5°F, quiet 30 dB(A) operation, slim 7-7/8" design, ENERGY STARefficiency, and smart Comfort App control.

What Our Experts Think
  • 18,000 BTU Hyper-Heating for reliable comfort in spaces up to 750 sq ft.

  • 100% heating capacity at 5°F, ensuring efficiency in cold climates.

  • Quiet operation at 30 dB(A) for minimal disruption.

  • Slim 7-7/8" ducted design fits tight installation spaces.

  • ENERGY STARcertified with smart Comfort App control for energy-efficient convenience.

Q&A

Q: What size space is this system suitable for?
A: Best for rooms up to 750 sq ft.

Q: Can it heat effectively in very cold temperatures?
A: Yes—provides full heating capacity down to 5°F.

Q: Is it energy-efficient?
A: Yes—ENERGY STARcertified with smart app controls.

Q: How quiet is the system?
A: Operates at only 30 dB(A), suitable for residential or office spaces.

Maintenance Tips
  • Inspect and clean air filters regularly.

  • Keep ductwork clear of dust and debris.

  • Check condensate lines for clogs or buildup.

  • Schedule annual professional servicing for refrigerant and electrical checks.

  • Ensure adequate clearance around the unit for airflow and efficiency.