Mitsubishi MSZ-EX15NLB 15,000 BTU Wall Mounted Indoor Unit - R454B

Mitsubishi MSZ‑EX15NLB: 15,000 BTU Wall‑Mounted Mini‑Split Indoor Unit

The MSZ‑EX15NLB indoor unit delivers efficient 15,000 BTU cooling and up to 18,000 BTU heating (nominal). Driven by a DC‑inverter motor and charged with low‑GWP R‑454B refrigerant, it provides whisper‑quiet, energy‑smart comfort with dual barrier protection and advanced allergen filtration. 

Note: This unit is not compatible with Mitsubishi’s “smart” outdoor systems.

General Information

System Type: Wall‑mounted ductless indoor air handler (requires compatible condenser)
Model: MSZ‑EX15NLB
Capacities: 14,000 BTU Cooling | 18,000 BTU Heating (nominal)
Room Size: Ideal for ~650 sq ft
Operating Modes: Heating & Cooling
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R‑454B (pre‑charged)

Key Features

INVERTER/DC Fan Motor: Precise, quiet modulation for lower energy use 

Dual Barrier Coating: Helps keep the heat‑exchanger free of dust, smoke & oil 

Advanced Filtration: Hybrid catechin + nano‑platinum filter neutralizes allergens 

Econo Cool Mode: Adjusts airflow & set‑point to boost cooling efficiency 

Smart Set & Wi‑Fi Ready: Save favorites and control via Comfort app or wired/IR remotes

Sleek Design & Color Options: Slim 7.7‑in‑deep chassis offered in silver (MSZ-EX15NLS), black (MSZ-EX15NLB ) or white (MSZ-EX15NLW)

Specifications (Rated Conditions)

Cooling Capacity: 14,000 BTU/h
Heating Capacity: 18,000 BTU/h nominal
Airflow (Cooling Dry): 208 – 382 CFM | (Heating Dry): 197 – 479 CFM
Sound (Cooling): 28 – 42 dB(A) | (Heating): 28 – 48 dB(A)
Power: 208/230 V | 1‑Ph | 60 Hz | MCA 1 A | MOCP 15 A
Dimensions (W×D×H): 34‑13/16″ × 7‑11/16″ × 11‑3/4″ | Weight: 26 lb
Piping: Liquid ¼″ | Gas ½″ | Drain ⅝″ O.D. 

Included Components

• Indoor Unit: MSZ‑EX15NLB wall‑mounted air handler

• Wireless Remote Controller

• Standard Installation Accessories (mounting bracket, filters, drain hose)

Ideal For

Homeowners or contractors expanding a ductless system with a stylish, quiet, efficient 15 k BTU zone. Advanced filtration, Econo Cool, and smart‑control options make the MSZ‑EX15NLB a premium comfort upgrade without the complexity of Mitsubishi’s smart outdoor platforms.