Mitsubishi GX-Series 3-Zone Wall-Mount Mini Split Heat Pump - 6K + 6K + 6K
Comfort for three separate rooms from one Mitsubishi multi-zone outdoor system. This GX-Series package pairs the MXZ-3D24NLHZ outdoor heat pump with 6K + 6K + 6K wall-mounted indoor units for efficient heating and cooling without adding ductwork.
The outdoor system is in Mitsubishi's 24,000 BTU class. For non-ducted indoor combinations like this wall-mount setup, the catalog lists 22,000 BTU cooling, 25,000 BTU heating, 20 SEER2 efficiency, and AHRI certificate 216505933.
Hyper Heat performance helps maintain stronger heating output in cold weather, making this a strong option for homes where winter performance matters.
At a Glance:
| Best For | three-room layouts where stronger cold-weather heating performance is a priority |
| System Models | MXZ-3D24NLHZ / 3-MSZ-GX06NL |
| Indoor Combination | 6K + 6K + 6K |
| AHRI Non-Ducted Capacity | 22,000 BTU cooling / 25,000 BTU heating |
| Heating Capacity at 5F | 25,000 BTU |
| Efficiency | 20 SEER2 / 13.0 EER2 / 10.0 HSPF2 |
| Voltage | 208/230V, 1 phase |
| Refrigerant | R-454B |
| Controls | Handheld remote included / WiFi built in on GX wall-mounted indoor units |
| Installation Type | Professional HVAC installation required |
Why Choose This Mitsubishi 3-Zone System?
- Three-room comfort: Heat and cool three spaces independently using one Mitsubishi outdoor system.
- GX wall-mounted indoor units: GX indoor units include handheld remote control capability and built-in WiFi per the catalog.
- Efficient inverter performance: Mitsubishi inverter technology varies output to help maintain steadier comfort than basic on/off equipment.
- Current-generation refrigerant: Built around Mitsubishi's R-454B equipment lineup.
- Clean installation profile: Wall-mounted indoor units avoid ductwork and are well suited for bedrooms, offices, additions, bonus rooms, and other defined spaces.
What Is Included?
- 1 Mitsubishi MXZ-3D24NLHZ outdoor multi-zone heat pump condenser
- 3 Mitsubishi MSZ-GX06NL 6K wall-mounted indoor units
- Handheld remote control capability for each indoor unit
Line-set note: choose a line-set length for each indoor unit. Select None for any zone where you do not want a line set included. Mixed-length line sets are supported; electrical accessories, pads, brackets, disconnects, condensate pumps, and other installation materials may need to be quoted or purchased separately.
Before You Order:
- Have your installer confirm room loads, indoor placement, outdoor placement, line-set routing, electrical requirements, and local code requirements.
- Nominal indoor sizes like 6K + 6K + 6K are not a substitute for a Manual J load calculation.
- This is not a DIY quick-connect system. Refrigerant piping, evacuation, electrical work, startup, and commissioning should be handled by a qualified HVAC professional.
- This ported outdoor condenser does not require a branch box for this configuration.
Frequently Asked Questions:
Why does the title say 24,000 BTU if the indoor combination is 6K + 6K + 6K?
The outdoor unit is Mitsubishi's 24,000 BTU class condenser. The catalog's non-ducted AHRI configuration for this outdoor system lists 22,000 BTU cooling and 25,000 BTU heating.
Can each room have its own temperature setting?
Yes. Each wall-mounted indoor unit can be controlled separately, subject to normal multi-zone operating limits.
Are line sets included?
Only for zones where you select a line-set length. Each indoor unit has its own line-set selector.
Is this a DIY system?
No. Mitsubishi multi-zone equipment should be installed and commissioned by a qualified HVAC professional.
Specifications:
| BRAND NAME | Mitsubishi |
| SERIES | GX-Series |
| SYSTEM TYPE | 3-zone ductless mini split heat pump |
| OUTDOOR MODEL | MXZ-3D24NLHZ |
| INDOOR MODELS | 3-MSZ-GX06NL |
| BRANCH BOX | Not required for this ported configuration |
| ZONE CAPACITY | 3 zones |
| AHRI CERTIFICATE NUMBER | 216505933 |
| AHRI TYPE | Non-ducted indoor units |
| COOLING CAPACITY | 22,000 BTU |
| HEATING CAPACITY | 25,000 BTU |
| HEATING CAPACITY AT 5F | 25,000 BTU |
| SEER2 | 20 |
| EER2 | 13.0 |
| HSPF2 | 10.0 |
| REFRIGERANT TYPE | R-454B |
| POWER SUPPLY | 208/230V, 1 phase |
| OUTDOOR UNIT TYPE | Ported Hyper Heat multi-zone condenser |
| REGISTERED WARRANTY | 10-year parts and compressor limited warranty when registered within 90 days; terms apply |
| NON-REGISTERED WARRANTY | 5-year parts / 7-year compressor limited warranty; terms apply |
Indoor Unit Details:
| Indoor Model | Nominal Size | Rated Indoor Capacity | Line Size | Dimensions |
| 3 x MSZ-GX06NL | 6K | 6,000 BTU cooling / 7,200 BTU heating | 1/4 in liquid / 3/8 in gas | 11-25/32 in H x 31-13/32 in W x 9-21/32 in D |
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