Mitsubishi MUZ-FX12NLHZ-U1 12,000 BTU Heat Pump Outdoor Unit - R454B - MUZFX12NLHZU1
Engineered for energy-efficient, year-round comfort, the Mitsubishi MUZ‑FX12NLHZ is a compact FX-Series outdoor condenser with Hyper‑Heating INVERTER® (H2i®) technology—delivering reliable performance even in extreme cold.
Powerful Cold-Climate Heating & Cooling
With 12,000 BTU cooling and up to 14,000 BTU heating capacity, the MUZ‑FX12NLHZ ensures consistent indoor comfort in outdoor temperatures as low as -13°F. High SEER2 and HSPF2 ratings provide significant energy savings for spaces up to ~500 sq ft.
Compact & Quiet Design
Built with space-conscious installation in mind, this outdoor unit features a slim profile and quiet operation as low as 48 dB(A), making it ideal for residential areas, patios, and balconies.
Smart Control Ready
Compatible with the Mitsubishi Kumo Cloud® app (with optional Wi-Fi adapter), allowing remote temperature control, scheduling, and monitoring from your smartphone or tablet for added convenience.
Reliable Single-Zone Operation
Designed for exclusive pairing with MSZ‑FX indoor units, this system supports advanced comfort features such as INVERTER-driven performance, Smart Set modes, and automatic defrost for efficient operation in any season.
Proven Mitsubishi Quality
Backed by Mitsubishi’s industry-leading 10-year parts warranty (when installed and registered by a licensed contractor), the MUZ‑FX12NLHZ delivers dependable comfort, efficiency, and peace of mind.
What Our Experts Think
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High-performance 12,000 BTU heat pump outdoor unit designed to pair with Mitsubishi FX Series indoor units.
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Uses environmentally friendly R454B refrigerant for improved efficiency and compliance with modern standards.
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Delivers reliable heating and cooling year-round with precise temperature control.
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Compact, durable design ensures long-lasting operation even in harsh weather conditions.
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Ideal for residential or light commercial installations seeking energy efficiency and performance.
Q&A
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Q: What indoor units are compatible?
A: Designed to work with Mitsubishi FX Series wall-mounted indoor units.
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Q: What refrigerant does it use?
A: Environmentally friendly R454B.
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Q: Can it provide both heating and cooling?
A: Yes, it functions as a full heat pump system.
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Q: Is professional installation required?
A: Yes, installation by a certified HVAC technician is recommended for optimal performance.
Maintenance Tips
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Keep outdoor coils clean and free of debris for maximum efficiency.
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Ensure the unit is level and properly secured to prevent vibration.
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Schedule annual professional maintenance to maintain optimal performance.
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Check refrigerant levels periodically to ensure peak efficiency.
