Mitsubishi MSZ-FX09NL & MUZ-FX09NLHZ 9,000 BTU 33.1 SEER2 Wall Mounted Hyper-Heating Heat Pump System - R454B

Mitsubishi MSZ‑FX09NL & MUZ‑FX09NLHZ: 9,000 BTU Wall‑Mounted Hyper Heat Pump System

The Mitsubishi MSZ‑FX09NL, paired with the MUZ‑FX09NLHZ outdoor unit, delivers ultra-compact, high-efficiency heating and cooling in a sleek 9,000 BTU ductless system. Designed for small to medium rooms up to 350 sq ft, this single-zone heat pump is ideal for bedrooms, offices, or additions where space and noise sensitivity matter.

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

Whisper-quiet sound levels, advanced filtration, and smart control compatibility make this mini-split a powerful solution for compact spaces with high comfort demands.

General Information
System Type: Wall-mounted ductless air handler + single-zone hyper heat pump condenser
Models: Indoor – MSZ‑FX09NL | Outdoor – MUZ‑FX09NLHZ
Capacities: 9,000 BTU Cooling | 12,000 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: Delivers precise, energy-saving performance

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

Space‑Saving Design: Compact wall unit is perfect for small to medium rooms or retrofit projects

Quiet Operation: Indoor sound as low as 20 dB(A) for minimal disruption

Washable Filter: Easy maintenance with reusable air filter

Smart Control Ready: Compatible with wired/wireless controllers and the Comfort app (with optional adapter)

Specifications (Rated Conditions)
Cooling Capacity: 15,000 | EER2: 18.35 | SEER2: 33.1
Heating Capacity @ 47°F: 21,300 | HSPF2: 13.3 | COP (47°F): 4.95
Heating Capacity @ 5°F: Up to 14,700
Electrical: 208/230 V, 1-Ph, 60 Hz
Airflow (Dry): 177-526 CFM (cool & heat)
Sound Pressure: Indoor 20–44 dB(A) | Outdoor 49 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 28-1/8 in. | 89 lb
Drain Connection: 5/8 in. O.D.

Included Components

Indoor Unit: MSZ‑FX09NL wall‑mounted ductless air handler

Outdoor Unit: MUZ‑FX09NLHZ Hyper‑Heat heat pump condenser

Ideal For
Homeowners and contractors looking for a quiet, ultra-compact ductless system to serve small to medium rooms with premium comfort. The MSZ‑FX09NL & MUZ‑FX09NLHZ system offers efficient year-round performance in a sleek, minimal footprint.