The Mitsubishi SEZ‑AD18NL is an 17,200 BTU slim ducted indoor unit delivering quiet, efficient heating and cooling. Designed for tight spaces, it supports flexible ducting and smart controls for seamless, reliable comfort.

Unit Type: Indoor Unit
Product Line: M-Series AD
Operating Mode: Cooling & Heating
Number of Zones: Multi
System Capacity: 17,200 BTU
Line Set Size: 1/4" x 1/2"
WiFi Enabled: Yes with Comfort App
WiFi Built In: Yes

Indoor Unit SEZ-AD18NL

Cooling Capacity up to 17,200 BTU
Heating Capacity up to 21,600 BTU
Room Cooling/Heating Capacity up to 750 sq ft

GENERAL FEATURES
• Built-in condensate lift mechanism
• Concealed horizontal-ducted unit: Concealed horizontal-ducted unit for
applications with short duct runs
• Multi-zone: A multi-zone unit provides the temperature management of
multiple zones within a building.
• Multiple control options, including the comfort app for remote access, third-
party interfaces, and both wired and wireless controllers
• Quiet operation: Quiet operation units are as quiet as a typical
conversation, and most indoor units are whisper quiet.
• Ultra-thin body: 7-7/8” high

Airflow Cooling CFM, Dry: 423-529-635
Airflow Heating CFM, Dry: 423-529-635
Noise Level dB(A), Cooling: 30-34-38
Noise Level dB(A), Heating: 30-34-38
Size W x D x H: 46-7/8" x 27-9/16" x 7-7/8"
Weight: 60 lbs