Mitsubishi MUZ-GX12NLHZ 12,000 BTU Hyper Heating Heat Pump Outdoor Unit - R454B - MUZGX12NLHZU1
Experience reliable year-round comfort with the Mitsubishi MUZ‑GX12NLHZ, a compact outdoor unit featuring Hyper-Heating INVERTER® technology for efficient heating even in cold climates.
Efficient Heating & Cooling
Delivering 12,000 BTU cooling and heating capacity, this unit ensures consistent performance down to -13°F, making it perfect for medium spaces up to ~500 sq ft.
Quiet, Space-Saving Design
Designed for residential use, it operates quietly and fits easily in limited outdoor spaces such as balconies or patios.
Smart Control Compatible
Supports Mitsubishi’s Comfort app (Wi-Fi adapter required) for convenient remote control, scheduling, and energy monitoring via smartphone or tablet.
Single-Zone Precision
Pairs exclusively with MSZ-GX indoor units for precise single-zone temperature control and energy-efficient operation.
Trusted Mitsubishi Warranty
Backed by Mitsubishi’s 10-year parts warranty when installed and registered by a licensed contractor, ensuring dependable, long-term comfort.
What Our Experts Think
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A strong 12,000 BTU Hyper-Heating outdoor unit built for reliable performance even in colder climates.
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Uses R454B refrigerant, offering improved efficiency and a lower environmental impact.
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Ideal for small to mid-size rooms when paired with a compatible Mitsubishi indoor unit.
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Hyper-Heating technology ensures consistent warmth in winter while maintaining excellent cooling efficiency in summer.
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Durable construction designed for long-term outdoor exposure.
Q&A
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Q: Does this unit support heating in very cold conditions?
A: Yes. Hyper-Heating technology delivers stable heating performance even in low ambient temperatures.
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Q: Which indoor units are compatible?
A: It pairs with select Mitsubishi GX Series indoor units—always confirm model matching before purchase.
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Q: What refrigerant does it use?
A: R454B, a next-generation low-GWP refrigerant.
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Q: Is it energy efficient?
A: Yes. The GX12NLHZ offers strong heating and cooling efficiency for year-round comfort.
Maintenance Tips
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Keep the outdoor coil clean and free of debris for maximum performance.
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Ensure proper airflow—maintain clear space around the unit.
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Schedule annual professional servicing to check refrigerant levels and system health.
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Protect from heavy snow accumulation in winter for uninterrupted heating performance.
