Mitsubishi MSZ-GX15NL & MUZ-GX15NLHZ 15,000 BTU 22.2 SEER2 Wall Mounted Hyper Heating Heat Pump System - R454B

Mitsubishi MSZ‑GX15NL & MUZ‑GX15NLHZ: 15,000 BTU Wall‑Mounted Hyper Heat Pump System

The Mitsubishi MSZ‑GX15NL, paired with the MUZ‑GX15NLHZ outdoor unit, delivers high-efficiency heating and cooling in a compact 15,000 BTU ductless mini-split system. Ideal for medium to large rooms up to 650 sq ft, this single-zone heat pump is perfect for master bedrooms, living areas, or open layouts requiring consistent, quiet performance.

With advanced INVERTER-driven compressor technology and eco-conscious R‑454B refrigerant, the system ensures precise temperature regulation and energy savings. The MSZ indoor unit offers a clean, low-profile wall-mounted design, while the MUZ condenser features Hyper‑Heat technology for reliable cold-weather performance—even in subzero conditions.

Built-in Wi-Fi, ultra-quiet operation, and easy maintenance make the MSZ‑GX15NL & MUZ‑GX15NLHZ system a smart, space-efficient comfort solution for residential use.

General Information
System Type: Wall-mounted ductless air handler + single-zone hyper heat pump condenser
Models: Indoor – MSZ‑GX15NL | Outdoor – MUZ‑GX15NLHZ
Capacities: 18,200 Cooling | 21,000 Heating
Room Size: Ideal for 650 sq ft
Operating Modes: Heating & Cooling
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R‑454B, 2.20 lb

Key Features

• INVERTER Technology: Energy-efficient, variable-speed compressor

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

• Space‑Saving Design: Unobtrusive wall unit for clean installations

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

• Washable Filter: Reusable, easy-to-clean air filter

• Built-In Wi-Fi: Control system remotely via Mitsubishi Comfort app

Specifications (Rated Conditions)
Cooling Capacity: 18,200 | EER2: 13 | SEER2: 22.2
Heating Capacity @ 47°F: 21,000 | HSPF2: 10 | COP (47°F): 3.73
Heating Capacity @ 5°F: Up to 14,000
Electrical: 208/230 V, 1-Ph, 60 Hz 
Airflow (Dry): 197-586 CFM (cool & heat)
Sound Pressure: Indoor 26-51 dB(A) | Outdoor 49-51 dB(A)
Piping: Liquid 1/4 in. | Gas 1/2 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. | 82 lb
Drain Connection: 5/8 in. O.D.

Included Components

• Indoor Unit: MSZ‑GX15NL wall-mounted ductless air handler

• Outdoor Unit: MUZ‑GX15NLHZ Hyper‑Heat heat pump condenser

Ideal For
Homeowners and contractors seeking a quiet, efficient ductless system for medium to large spaces. The MSZ‑GX15NL & MUZ‑GX15NLHZ delivers smart control, cold-climate performance, and year-round comfort.