Mitsubishi MSY-GX09NL & MUY-GX09NL 9,000 BTU 28.4 SEER2 Wall Mounted Cooling Only System - R454B

Mitsubishi MSY-GX09NL & MUY-GX09NL: 9,000 BTU Wall-Mounted Cooling-Only System

The Mitsubishi MSY-GX09NL indoor unit, paired with the MUY-GX09NL outdoor unit, delivers efficient 9,000 BTU cooling in a sleek, single-zone ductless mini-split system. Designed for rooms up to 350 sq ft, this system is ideal for spaces where energy efficiency and quiet operation are priorities.

Equipped with INVERTER-driven compressor technology and eco-friendly R-454B refrigerant, the system provides precise temperature control and energy-saving performance. The MSY-GX09NL features a slim, low-profile design for unobtrusive wall mounting, while the MUY-GX09NL condenser ensures reliable cooling even in low ambient temperatures.

Advanced filtration, whisper-quiet operation, and smart control compatibility make this system a powerful solution for compact spaces with high comfort demands.

General Information
System Type: Wall-mounted ductless air handler + single-zone cooling-only condenser
Models: Indoor – MSY-GX09NL | Outdoor – MUY-GX09NL
Capacities: 9,000 BTU Cooling
Room Size: Ideal for 350 sq ft
Operating Modes: Cooling
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R-454B, 2.0 lb

Key Features

• INVERTER Technology: Delivers precise, energy-saving performance

• Low Ambient Cooling: Reliable cooling down to -1°F outdoor temperatures

• Space-Saving Design: Compact wall unit is perfect for small rooms or retrofit projects

• Quiet Operation: Indoor sound as low as 19 dB(A) for minimal disruption

• Washable Filter: Easy maintenance with reusable air filter

• Smart Control Ready: Compatible with Comfort App for remote control

Specifications (Rated Conditions)
Cooling Capacity: 9,000 BTU | EER2: 15.4 | SEER2: 28.4
Electrical: 208/230 V, 1-Ph, 60 Hz | MCA: 15 A | MOCP: 15 A
Airflow (Dry): 136–448 CFM
Sound Pressure: Indoor 19-43 dB(A) | Outdoor 48 dB(A)
Piping: Liquid 1/4 in. | Gas 3/8 in. | Max line length: 65 ft | Max height: 40 ft
Outdoor Dimensions / Weight: 31-1/2 x 11-1/4 x 21-5/8 in. | 77 lb
Drain Connection: 5/8 in. O.D.

Included Components

• Indoor Unit: MSY-GX09NL wall-mounted ductless air handler

• Outdoor Unit: MUY-GX09NL cooling-only condenser

• Hand-Held Remote Controller

Ideal For
Homeowners and contractors looking for a quiet, energy-efficient ductless system for small rooms. The MSY-GX09NL & MUY-GX09NL system offers efficient cooling performance in a sleek, minimal footprint.