Mitsubishi 15,000 BTU Wall Mounted Indoor Unit - R454B - MSZ-EX15NLW
The MSZ‑EX15NLW 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.
System Type: Wall‑mounted ductless indoor air handler (requires compatible condenser)
Model: MSZ‑EX15NLW
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)
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
| Cooling Capacity |
14,000 BTU/h |
| Heating Capacity |
18,000 BTU/h nominal |
| Airflow (Cooling Dry) |
208 – 382 CFM |
| Airflow (Heating Dry) |
197 – 479 CFM |
| Sound (Cooling) |
28 – 42 dB(A) |
| Sound (Heating) |
28 – 48 dB(A) |
| Power |
208/230 V, 1‑Phase, 60 Hz |
| MCA / MOCP |
1 A / 15 A |
| Unit Dimensions (W×D×H) |
34‑13/16″ × 7‑11/16″ × 11‑3/4″ |
| Unit Weight |
26 lb |
| Piping (Liquid / Gas) |
1/4″ / 1/2″ |
| Drain Pipe Size |
5/8″ O.D. |
Included
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Indoor Unit: MSZ‑EX15NLW wall‑mounted air handler
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Wireless Remote Controller
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Standard Installation Accessories (mounting bracket, filters, drain hose)
What our Experts Think
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Optimal Cooling & Heating: 15,000 BTU capacity efficiently manages small to medium rooms.
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Wall-Mounted Design: Saves floor space while providing effective airflow.
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Energy Efficient: Uses R454B refrigerant for eco-friendly, high-performance operation.
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Quiet Operation: Low-noise design ensures comfort without disruption.
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Durable Construction: Built for long-lasting reliability with minimal maintenance.
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Precise Airflow Control: Adjustable louvers allow targeted temperature distribution.
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User-Friendly Controls: Simple interface for easy operation and consistent comfort.
Q&A
Q: What type of unit is this?
A: A 15,000 BTU wall-mounted indoor air conditioning unit, compatible with R454B refrigerant.
Q: What spaces is it suitable for?
A: Ideal for medium-sized rooms, offices, or residential spaces requiring efficient cooling and heating.
Q: What type of refrigerant does it use?
A: Uses R454B refrigerant, designed for lower environmental impact.
Q: Is it compatible with other Mitsubishi systems?
A: Yes. Works with Mitsubishi outdoor units for split-system installation.
Q: What are its key benefits?
A: Offers quiet operation, energy-efficient performance, and precise temperature control.
Q: How is it installed?
A: Wall-mounted installation as part of a split-system setup.
Maintenance Tips
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Clean or vacuum the indoor filters every 2–4 weeks to maintain strong airflow and air quality.
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Keep air inlet, louvers, and surrounding surface dust‑free to promote proper airflow and quiet operation.
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Ensure the condensate drain line stays clear to avoid water backup and leaks.
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Have a certified technician inspect and clean coils/blower every 1–2 years to preserve heat‑exchange performance.
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Check mounting and stability periodically to prevent vibrations or shifting.
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Schedule annual professional service to verify refrigerant levels, electrical connections, and overall performance.
Damage 
Loss 
Theft 
