Mitsubishi MSZ-GX09NL & MUZ-GX09NLHZ 28.4 SEER2 Wall Mounted Hyper Heating Heat Pump System - R454B

Mitsubishi MSZ‑GX09NL & MUZ‑GX09NLHZ: 9,000 BTU Wall‑Mounted Hyper Heat Pump System

The Mitsubishi MSZ‑GX09NL, paired with the MUZ‑GX09NLHZ outdoor unit, delivers efficient and reliable heating and cooling in a compact 9,000 BTU ductless mini-split system. Ideal for small to medium rooms up to 350 sq ft, this single-zone heat pump is perfect for bedrooms, offices, or additions where quiet operation and comfort matter.

Equipped with advanced INVERTER-driven compressor technology and eco-friendly R‑454B refrigerant, the system provides precise temperature control and energy-efficient performance. The MSZ indoor unit features a sleek, low-profile design for unobtrusive wall mounting, while the MUZ outdoor condenser includes Hyper‑Heat technology to ensure dependable warmth in cold climates.

With whisper-quiet sound levels, integrated Wi-Fi for remote management, and advanced filtration, the MSZ‑GX09NL & MUZ‑GX09NLHZ is a smart and space-saving comfort solution.

General Information
System Type: Wall-mounted ductless air handler + single-zone hyper heat pump condenser
Models: Indoor – MSZ‑GX09NL | Outdoor – MUZ‑GX09NLHZ
Capacities: 12,200 Cooling | 15,900 Heating
Room Size: Ideal for 350 sq ft
Operating Modes: Heating & Cooling
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R‑454B, 2.20 lb

Key Features

• INVERTER Technology: Provides precise, energy-saving performance

• Hyper‑Heat Cold Climate Performance: Reliable heating down to -13°F outdoor temps

• Space‑Saving Design: Compact wall unit ideal for small to medium rooms

• Quiet Operation: Indoor sound levels as low as 20 dB(A)

• Washable Filter: Easy to maintain reusable air filter

• Built-In Wi-Fi: Integrated wireless control via the Mitsubishi Comfort app

Specifications (Rated Conditions)
Cooling Capacity: 12,200 | EER2: 15.4 | SEER2: 28.4
Heating Capacity @ 47°F: 15,900 | HSPF2: 10.2 | COP (47°F): 4.85
Heating Capacity @ 5°F: Up to 9,600
Electrical: 208/230 V, 1-Ph, 60 Hz 
Airflow (Dry): 138-448 CFM (cool & heat)
Sound Pressure: Indoor 19-43 dB(A) | Outdoor 48-50 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: MSZ‑GX09NL wall-mounted ductless air handler

• Outdoor Unit: MUZ‑GX09NLHZ Hyper‑Heat heat pump condenser

Ideal For
Homeowners and contractors seeking a quiet, compact ductless system for small to medium spaces. The MSZ‑GX09NL & MUZ‑GX09NLHZ offers efficient, year-round comfort with smart control and advanced features.