Mitsubishi GX Series 36,000 BTU Ductless Mini-Split Heat Pump System
The Mitsubishi GX 36,000 BTU system is the largest single-zone model in the GX family, pairing the MUZ-GX36NL inverter condenser with the MSZ-GX36NL wall-mounted air handler for three tons of ductless capacity. Rated at 18.5 SEER2 on R454B refrigerant, it is engineered for the biggest open spaces a single head can serve — with class-leading dehumidification of up to 10 pints per hour.
Is 36,000 BTU the Right Size?
Three tons is the ceiling for GX single-zone capacity. As a general guideline the GX36 fits large open areas of roughly 1,500 to 1,800 square feet, delivering 33,800 BTU/h of cooling and 35,200 BTU/h of heating at 47°F. It is the choice when a single room's peak load simply exceeds what the 30,000 BTU model can cover.
At maximum single-zone output, distribution is everything. This system performs best in tall, open, unobstructed volumes; spaces broken up by walls or partitions are generally better handled with multiple zones so that no corner is left under-served.
Ideal for: expansive great rooms, open commercial floors, warehouses offices, large sunrooms, and high-ceiling gathering spaces.
Prefer a smaller step? The Mitsubishi GX 30,000 BTU mini-split system covers slightly smaller areas at a modestly higher SEER2, while the full GX single-zone lineup spans 9,000 to 36,000 BTU.
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-GX36NL — 36,000 BTU Inverter Heat Pump |
|---|---|
| Indoor Air Handler | MSZ-GX36NL Wall-Mounted Evaporator |
| System Type | Single-Zone Ductless Mini-Split Heat Pump |
| Refrigerant | R454B (low-GWP A2L) |
| Cooling Capacity | 33,800 BTU/h (10,300–33,800 range) |
| Heating Capacity (47°F) | 35,200 BTU/h |
| Efficiency | 18.5 SEER2 / 8.5 HSPF2 / 8.4 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-GX36NL uses the large outdoor cabinet with a 5/8" gas line and 1/4" liquid line and carries a 3 lb 12 oz R454B charge. As the top of the single-zone range, it prioritizes maximum capacity and moisture removal over the higher SEER2 numbers of the smaller models.
Outdoor & Indoor Unit Features
MUZ-GX36NL Outdoor Condenser
- Three-ton SRB172 inverter compressor
- Largest GX single-zone output: 33,800 BTU/h cooling
- 35,200 BTU/h heating 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
- Up to 100 ft line length and 50 ft height allowance
- 208/230V single-phase, 25A max fuse
- 57 dB(A) cooling sound level
MSZ-GX36NL Indoor Air Handler
- Maximum-capacity wall-mounted head
- Class-leading dehumidification up to 10 pt/h in Dry mode
- POWERFUL mode for rapid temperature recovery
- Built-in Wi-Fi with kumo cloud app control
- Electrostatic anti-allergy enzyme filtration
- 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 the 36,000 BTU GX the largest single-zone model available?
Yes. At three tons and 33,800 BTU/h of cooling, the MUZ-GX36NL is the top of the GX single-zone range. Larger requirements are typically met with multi-zone or ducted equipment.
What is the largest space a single GX36 head should serve?
As a general guideline, roughly 1,500 to 1,800 square feet of open area. Beyond that, or in divided layouts, multiple zones deliver more even comfort than pushing one head to its limit.
How much dehumidification does the GX36 provide?
Its Dry mode removes up to about 10 pints of moisture per hour — the highest in the GX single-zone family — which is a real advantage in large, humid, or high-occupancy spaces.
Does three tons of output need special wiring?
The GX36 runs on the same 208/230V single-phase circuit as the GX18–GX30, with a 23A minimum circuit ampacity and 25A maximum overcurrent protection. A dedicated circuit sized to those figures is required.
Why choose the GX36 over the GX30?
Step up when a room's peak heating or cooling load exceeds the GX30's capacity, or when maximum dehumidification is needed. The GX30 posts a slightly higher SEER2 for spaces it can already handle.
Is this system suitable for commercial use?
Yes. Its three-ton capacity and strong moisture removal make it well suited to open commercial floors, offices, and similar spaces that fall within its rated capacity.
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
