Mitsubishi MXZ-SM42NLHZ 42,000 BTU Hyper-Heating H2i Smart Multi Heat Pump Unit- R454B - MXZSM42NLHZ
The Mitsubishi 42,000 BTU low temperature multi-zone outdoor heat pump (MXZ-SM42NLHZ) is an extremely efficient heating and cooling option that can handle five zones at significantly lower temperature levels.
This specific outdoor unit allows you to connect a wide variety of indoor units that can range up to 5 with the branch box or up to 12 without the branch box (City Multi). The MXZ-SM42NLHZ is part of Mitsubishi's Smart Multi Series, catering to residential or commercial applications. This outdoor unit is perfect for customers located in regions that experience consistent sub 0 temperatures. This system uses the new R454B refrigerant, and is the direct replacement for MXZ-SM42NAMHZ*.The Mitsubishi 42,000 BTU low temperature multi-zone outdoor heat pump (MXZ-SM42NLHZ) is an extremely efficient heating and cooling option that can handle five zones at significantly lower temperature levels.
This specific outdoor unit allows you to connect a wide variety of indoor units that can range up to 5 with the branch box or up to 12 without the branch box (City Multi). The MXZ-SM42NLHZ is part of Mitsubishi's Smart Multi Series, catering to residential or commercial applications. This outdoor unit is perfect for customers located in regions that experience consistent sub 0 temperatures. This system uses the new R454B refrigerant, and is the direct replacement for MXZ-SM42NAMHZ*.
Features
• Compatible with M- and P-Series and CITY MULTI indoor units (branch box required for connection with M- and P-Series)
• Compressor overcurrent detection
• Compressor thermal protection
• Fan motor overheating/voltage protection
• High pressure protection
• INVERTER-driven compressor
• Quiet operation: Outdoor units are as quiet as a typical conversation
• Seacoast protection
• Thermal Differential 1°F
What Our Experts Think
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High-capacity 42,000 BTU multi-zone unit designed for cold climates and sub-zero performance.
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Supports up to five zones with a branch box or up to 12 zones without, providing flexible multi-room comfort.
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Smart Multi H2i technology ensures efficient heating and cooling even at very low outdoor temperatures.
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Compatible with a wide range of Mitsubishi indoor units for residential or commercial applications.
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Uses eco-friendly R454B refrigerant and replaces the MXZ-SM42NAMHZ for improved performance and efficiency.
Q&A
Q: How many zones can this unit support?
A: Up to 5 zones with a branch box, or 12 zones without a branch box (City Multi).
Q: Is it suitable for extremely cold climates?
A: Yes, designed to operate efficiently in sub-zero temperatures.
Q: What indoor units are compatible?
A: Compatible with various Mitsubishi wall-mounted, ceiling, floor, and ducted indoor units.
Q: What refrigerant does it use?
A: R454B, which is energy-efficient and environmentally friendly.
Maintenance Tips
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Keep the outdoor unit area clear of snow, ice, and debris for proper airflow.
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Inspect and clean indoor unit filters regularly to maintain efficiency.
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Schedule annual professional servicing to check refrigerant levels and system performance.
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Ensure no obstructions around piping or ductwork that could reduce airflow.
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Monitor for unusual noise or uneven temperature distribution as an early sign of maintenance needs.
