Mitsubishi MUY-GX24NL-U1 24,000 BTU Cooling Only Outdoor Unit - R454B - MUYGX24NLU1
Deliver powerful, efficient cooling to large spaces with the Mitsubishi MUY‑GX24NL, a robust outdoor unit designed for single-zone, cooling-only applications in residential or light commercial environments.
High-Capacity Cooling Performance
Providing 24,000 BTU of cooling capacity, the MUY‑GX24NL efficiently cools rooms up to ~1,000 sq ft when paired with a compatible MSY-GX indoor unit. Ideal for warmer climates or spaces needing cooling only.
Compact & Quiet Operation
This unit features a compact design and operates quietly, making it suitable for patios, balconies, or close-to-living-area installations without causing noise disturbance.
Energy-Efficient Single-Zone Cooling
Utilizes Mitsubishi’s INVERTER compressor technology for precise temperature control and energy savings in single-zone cooling applications.
Mitsubishi Warranty Assurance
Backed by a 10-year parts warranty when installed and registered by a licensed contractor, ensuring long-term reliable cooling performance.
What our Experts Think
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Strong cooling performance for medium‑large spaces
The Mitsubishi MUY‑GX24NL‑U1 24,000 BTU Cooling Only Outdoor Unit delivers reliable, high‑efficiency cooling for rooms up to ~1,000 sq ft when paired with the right indoor unit—ideal for living rooms, open floor areas, or commercial zones needing dedicated cooling.
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Excellent energy efficiency and lower operating cost
With a **SEER2 rating of 21.5 and **EER21 of 13, this inverter outdoor unit cools efficiently, helping reduce electricity usage and monthly costs compared to older or non‑inverter condensers.
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Quiet, durable outdoor operation
Operating around 55 dB(A), the unit stays reasonably quiet for an outdoor condenser, while the Blue Fin anti‑corrosion coating enhances durability in coastal or challenging environments.
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Modern R454B refrigerant for lower environmental impact
Designed to work with R454B low‑GWP refrigerant, this unit meets modern environmental standards and supports more sustainable cooling performance.
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Flexible installation and system design
Supporting up to ~100 ft of line set and up to 50 ft of height difference, this outdoor condenser gives installers flexibility in choosing placement without sacrificing performance.
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Reliable inverter compressor technology
The inverter‑driven compressor adapts output to match cooling demand precisely, leading to more stable indoor temperatures, fewer cycles, and enhanced dehumidification.
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Smart restart after power interruptions
Automatically restarts after power outages, minimizing downtime and keeping your comfort system ready without manual reset.
Q&A
Q: What is the Mitsubishi MUY‑GX24NL‑U1?
A: The MUY‑GX24NL‑U1 is a 24,000 BTU cooling‑only outdoor condenser for Mitsubishi GX‑Series mini‑split systems, designed to deliver high‑efficiency cooling when paired with a compatible indoor unit.
Q: What type of system does this outdoor unit support?
A: It supports single‑zone, cooling‑only mini‑split setups — no heat pump function (heat is provided separately if needed).
Q: How efficient is this outdoor unit?
A: It uses an inverter‑driven compressor with a SEER2 rating of ~21.5 and an EER2 rating of ~13 for energy‑efficient and responsive cooling.
Q: What refrigerant does it use?
A: It is charged with R454B refrigerant, chosen for improved environmental performance compared to older R410A systems.
Q: What cooling capacity can I expect?
A: Rated at ~24,000 BTU with maximum peaks around 27,000 BTU, making it suitable for cooling medium to larger rooms up to ~1,000 sq ft with the right indoor unit.
Q: What indoor unit pairs with MUY‑GX24NL‑U1?
A: Typically paired with Mitsubishi GX‑Series indoor units, such as the MSY‑GX24NL wall‑mounted air handler, for efficient single‑zone cooling.
Q: How quiet and durable is the outdoor unit?
A: Operates at around 55 dB(A) for quiet performance and includes Blue Fin corrosion‑resistant coating for durability in outdoor environments.
Q: What are the electrical requirements?
A: Runs on 208–230 V, 1‑phase, 60 Hz power, typical for residential and light commercial installations.
Q: Does the system restart automatically after a power outage?
A: Yes — the outdoor unit supports automatic power restart once electricity is restored.
Q: What applications are best for this unit?
A: Ideal for homes, offices, shops, or other spaces where dedicated cooling is needed without integrated heating.
Maintenance Tips
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Keep Surroundings Clear: Maintain 12–24 inches of clearance around the unit. Remove leaves, debris, or plants that block airflow.
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Clean the Condenser Coils: Rinse coils with a gentle water spray periodically to remove dirt and dust buildup.
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Inspect for Obstructions or Ice: Check the unit for debris, frost, or ice that could reduce cooling performance.
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Check Electrical Connections: Inspect wiring and terminals for corrosion or looseness; secure connections prevent malfunctions.
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Schedule Annual Professional Service: A licensed HVAC technician should check refrigerant levels, fans, and overall operation once per year.
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Maintain Proper Drainage: Ensure condensate or rainwater drains freely from the unit’s base to prevent standing water and corrosion.
