Mitsubishi MSY-GX15NL & MUY-GX15NL 22.2 SEER2 Wall Mounted Cooling Only System - R454B

Mitsubishi MSY-GX15NL & MUY-GX15NL: 15,000 BTU Wall-Mounted Cooling-Only System

The Mitsubishi MSY-GX15NL indoor unit paired with the MUY-GX15NL outdoor unit delivers efficient 15,000 BTU cooling in a single-zone ductless mini-split. Designed for rooms up to 650 sq ft, this system combines advanced INVERTER technology with whisper-quiet operation for reliable, energy-efficient cooling.

Utilizing eco-friendly R-454B refrigerant and featuring Dual Barrier and Blue Fin coatings, the system offers enhanced protection against dust, oil, and corrosion. The sleek, low-profile indoor unit includes a washable Nano Platinum filter for improved air quality and maintenance ease.

Built-in Wi-Fi enables remote temperature control and scheduling via the Mitsubishi Comfort app. The system maintains effective cooling performance down to -1 °F outdoor temperatures, ensuring dependable year-round comfort in various climates.

General Information
System Type: Wall-mounted ductless air handler + single-zone cooling-only condenser
Models: Indoor – MSY-GX15NL | Outdoor – MUY-GX15NL
Capacities: 14,000 BTU Cooling (18,200 BTU Max)
Room Size: Ideal for 650 sq ft
Operating Modes: Cooling
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R-454B, 2.0 lb

Key Features

• INVERTER Technology: Precise, energy-saving compressor control

• Low-Ambient Cooling: Reliable operation to -1 °F outdoor temps

• Durable Coatings: Dual Barrier and Blue Fin protect against corrosion and contaminants

• Quiet Operation: Indoor sound as low as 19 dB(A); outdoor approx. 49 dB(A)

• Washable Nano-Platinum Filter: Easy maintenance and improved indoor air quality

• Built-In Wi-Fi: Compatible with Mitsubishi Comfort app for full remote control

Specifications (Rated Conditions)
Cooling Capacity: 14,000 BTU | EER2: 13 | SEER2: 22.2
Electrical: 208/230 V, 1-Ph, 60 Hz | MCA: 12 A | MOCP: 25 A
Airflow (Dry): 219-586 CFM
Sound Pressure: Indoor 26–51 dB(A) | Outdoor 49 dB(A)
Piping: Liquid 1/4 in. | Gas 1/2 in. | Max Line Length 65 ft | Max Height 40 ft
Outdoor Dimensions / Weight: 31 ½ × 11 ¼ × 21 ⅝ in. | 81 lb
Drain Connection: ⅝ in. O.D.

Included Components

• Indoor Unit: MSY-GX15NL wall-mounted air handler

• Outdoor Unit: MUY-GX15NL cooling-only condenser

• Back-lit Hand-Held Remote Controller

Ideal For
Homeowners and contractors seeking a quiet, energy-efficient cooling system for medium-large rooms. The MSY-GX15NL & MUY-GX15NL provide dependable performance, smart control, and easy maintenance in a compact design.