Mitsubishi MSZ-GX09NL & MUZ-GX09NL 9,000 BTU 28.4 SEER2 Wall Mounted Heat Pump System - R454B

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

The Mitsubishi MSZ‑GX09NL (indoor) and MUZ‑GX09NLHZ (outdoor) form a 9,000 BTU single-zone ductless mini-split with advanced H2i Hyper-Heat capability. Perfect for small to medium spaces up to ~350 sq ft, it offers efficient year-round heating and cooling.

Equipped with inverter-driven compressor technology and eco-friendly R‑454B refrigerant, the system delivers 100% heating capacity down to 5 °F and can operate in temperatures as low as –22 °F. The sleek indoor unit features Dual Barrier Coating, advanced filtering, and Econo Cool mode. The outdoor unit includes Blue Fin corrosion protection, base pan heater, and precise linear valve control

Quiet and smart, the system includes built-in Wi‑Fi and compatibility with the Comfort app, wired/wireless remotes, and third-party controls.

General Information
System Type: Wall-mounted ductless air handler + single-zone hyper heat pump condenser
Models: Indoor – MSZ‑GX09NL | Outdoor – MUZ‑GX09NLHZ
Capacities: 9,000 BTU Cooling (rated), up to 12,200 Max | 10,900 BTU Heating (rated), up to 15,900 Max
Room Size: Ideal for ~350 sq ft
Operating Modes: Heating & Cooling
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R‑454B

Key Features

• H2i Hyper‑Heat: Full heating capacity at 5 °F, operable to –22 °F

• Inverter Compressor+Linear Valve: Precise, energy-efficient temperature control

• Dual Barrier & Blue Fin Coatings: Resists dust, oil, corrosion

• Econo Cool & Smart Dry Modes: Energy-saving airflow and humidity control 

• Quiet Operation: Indoor sound from 19 dB(A); outdoor ~50 dB

• Built‑In Wi‑Fi: Control via Mitsubishi Comfort app or remotes 

• Washable Electrostatic Enzyme Filter: Plus optional microparticle filter 

Specifications (Rated Conditions)
Cooling Capacity (95 °F): Rated 9,000 BTU/h, Max 12,200
Heating Capacity (47 °F): Rated 10,900 BTU/h, Max 15,900
Airflow (Cooling/Heating Dry): 151–448 CFM; Wet: Cooling only: 136–403 CFM 
Sound Pressure (Indoor): 19–43 dB(A)
Voltage/Frequency: 208/230 V, 1-Ph, 60 Hz
Piping: Liquid ¼", Gas 3/8"; Max line 65 ft / 40 ft height
Dimensions (Indoor): 31‑13/32 × 9‑21/32 × 11‑25/32 in; Weight: ~23 lb

Included Components

• Indoor Unit: MSZ‑GX09NL wall-mounted air handler

• Outdoor Unit: MUZ‑GX09NLHZ Hyper‑Heat mini-split condenser

• Wireless Remote Controller

Ideal For
Homeowners and contractors seeking a compact, whisper-quiet system for small to medium spaces. The MSZ‑GX09NL & MUZ‑GX09NLHZ offers robust heating in extreme cold, efficient cooling, smart features, and low maintenance in a sleek design.