Mitsubishi GX Series 24,000 BTU Ductless Mini-Split Heat Pump System
The Mitsubishi GX 24,000 BTU system delivers two tons of ductless heating and cooling from the MUZ-GX24NL inverter condenser and the MSZ-GX24NL wall-mounted air handler. Rated at 21.5 SEER2 on R454B refrigerant, it is built to condition large open living areas — the kind of space where a single high-output head replaces a much larger conventional system.
Is 24,000 BTU the Right Size?
Two tons of capacity is a big single-zone step. As a general guideline the GX24 suits open areas of roughly 1,000 to 1,400 square feet, providing 22,400 BTU/h of cooling and 27,600 BTU/h of heating at 47°F. That heating output is what makes it attractive for homeowners replacing electric baseboard or supplementing a struggling central system in a great room.
Because it concentrates a lot of output through one indoor head, airflow reach matters. Long, narrow, or partitioned layouts may distribute two tons unevenly, so open sight lines from the head to the far corners of the room give the best result.
Ideal for: open great rooms, large basements, combined living-dining areas, small retail floors, and light-commercial break rooms.
Need more capacity? Step up to the Mitsubishi GX 30,000 BTU mini-split system, or step down to the 18,000 BTU GX system for a large single room.
Recommended room sizes are general guidelines only. Actual requirements depend on insulation, ceiling height, sun exposure, climate, and room use. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condenser | MUZ-GX24NL — 24,000 BTU Inverter Heat Pump |
|---|---|
| Indoor Air Handler | MSZ-GX24NL Wall-Mounted Evaporator |
| System Type | Single-Zone Ductless Mini-Split Heat Pump |
| Refrigerant | R454B (low-GWP A2L) |
| Cooling Capacity | 22,400 BTU/h (7,400–27,000 range) |
| Heating Capacity (47°F) | 27,600 BTU/h |
| Efficiency | 21.5 SEER2 / 10.3 HSPF2 / 13.0 EER2 |
| Compressor | Inverter-Driven (SRB172FQHM) |
| Condenser Electrical | 208/230V, 1 Phase, 60 Hz — 23A MCA |
| Max Line Length / Height | 100 ft / 50 ft |
The MUZ-GX24NL shares the larger outdoor chassis with the GX18 and steps the gas line up to 5/8" (with 1/4" liquid), carrying a 3 lb 12 oz R454B charge. Its 27,600 BTU/h heating output at 47°F is the standout figure — nearly matching a small central heat pump from a single ductless head.
Outdoor & Indoor Unit Features
MUZ-GX24NL Outdoor Condenser
- Two-ton SRB172 inverter compressor
- Strong 27,600 BTU/h heating output at 47°F
- Factory-charged with 3 lb 12 oz of R454B
- Linear expansion valve refrigerant control
- Reverse-cycle automatic defrost
- 5/8" gas and 1/4" liquid flared connections
- Extended 100 ft line length, 50 ft height allowance
- 208/230V single-phase, 25A max fuse
- Large weather-resistant cabinet, 116 lb
- 55 dB(A) cooling sound level
MSZ-GX24NL Indoor Air Handler
- High-output wall-mounted head for large rooms
- POWERFUL mode for fast temperature recovery
- Built-in Wi-Fi with kumo cloud app control
- Electrostatic anti-allergy enzyme filtration
- Up to 4.5 pt/h dehumidification in Dry mode
- Econo Cool energy-saving mode
- Five fan speeds including Quiet
- Auto and wide-vane airflow direction
- Auto-restart and weekly timer
- Wireless remote controller included
Specifications & Manuals
Product documentation includes indoor and outdoor technical specifications, installation instructions, operation guidance, and parts and service references to assist with selection, installation, and service.
Frequently Asked Questions
Is 24,000 BTU the same as a two-ton system?
Yes. Twenty-four thousand BTU/h equals two tons of cooling. The MUZ-GX24NL is the two-ton member of the GX single-zone family and delivers 22,400 BTU/h of rated cooling.
Can the GX24 replace baseboard heat in a great room?
Its 27,600 BTU/h of heating at 47°F makes it a strong candidate for reducing or replacing electric resistance heat in an open great room, though a heat-loss calculation should confirm it for your climate.
What line-set sizes does the 24,000 BTU system use?
The GX24 uses a 5/8" gas line and a 1/4" liquid line — a larger gas line than the GX18 — with allowances up to 100 feet of length and 50 feet of height.
Will two tons through one head cover a partitioned floor plan?
A single wall head conditions the space it can throw air into. For rooms separated by walls or long hallways, output will concentrate near the unit; open layouts distribute the capacity far more evenly.
How loud is the GX24 outdoor unit?
The MUZ-GX24NL is rated at 55 dB(A) in cooling — a modest increase over the smaller GX models, reflecting the higher airflow of the two-ton coil.
Can it be used in a light-commercial space?
Yes, it is well suited to small retail floors, break rooms, and similar light-commercial spaces within its capacity range, using the same 208/230V single-phase power as the residential installation.
MSZ GX Technical SpecificationsMSZ GX Installation InstructionsMSZ GX Operation InstructionsMSZ GX Technical SpecificationsMSZ GX Parts ManualMUZ GX Technical SpecificationsMUZ GX Service ManualMUZ GX Parts Manual
