Mitsubishi SUZ-AA18NLHZ 18,000 BTU Hyper Heating Heat Pump Outdoor Unit - R454B - SUZAA18NLHZ
The Mitsubishi SUZ-AA18NLHZ is an 18,000 BTU Hyper-Heating inverter heat pump with R-454B refrigerant. It provides full heating at 5°F, operates to –13°F, and ensures quiet, efficient comfort year-round with durable design and broad indoor unit compatibility.
Features
• Blue Fin Coating: An anti-corrosion treatment applied to the aluminum fins of the heat exchanger of the outdoor unit to protect against corrosion caused
by salt, sulfur, and other airborne contaminants, especially in coastal and industrial areas.
• Built-in base pan heater
• Hot-Start Technology: Hot-Start Technology ensures the fan only activates once the heat exchanger is warm, preventing cold air blasts during start-up.
What Our Experts Think
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Robust 18,000 BTU Hyper-Heating outdoor unit ideal for cold-climate performance.
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Delivers full heating at 5°F and continues operating down to –13°F for reliable winter comfort.
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Inverter technology and R454B refrigerant improve efficiency and reduce energy costs.
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Quiet, durable design pairs with multiple Mitsubishi indoor unit types for flexible setups.
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Excellent option for homeowners needing high heating output in harsh climates.
Q&A
Q: How well does this unit perform in cold weather?
A: It provides full heating at 5°F and continues operating down to –13°F.
Q: What indoor units is it compatible with?
A: A broad range of Mitsubishi wall, floor, ducted, and ceiling cassette units.
Q: Is it energy efficient?
A: Yes, the inverter system and R454B refrigerant boost overall efficiency.
Q: Does it offer year-round comfort?
A: Yes, it delivers both heating and cooling for all-season use.
Maintenance Tips
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Keep the outdoor unit clear of snow, ice, and debris to maintain airflow.
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Rinse coils gently every few months to prevent dirt buildup.
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Clean indoor filters regularly to reduce strain on the system.
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Have a professional inspect the system yearly for refrigerant levels and performance.
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Monitor for unusual noise or reduced output during extreme cold, which may signal an obstruction.
