Mitsubishi MSZ-GX24NL-U1 24,000 BTU Wall Mounted Indoor Unit - R454B - MSZGX24NLU1
Deliver powerful, efficient comfort with the Mitsubishi MSZ‑GX24NL, a sleek wall-mounted indoor unit designed for large rooms requiring reliable, year-round climate control.
Modern, Space-Saving Design
The MSZ‑GX24NL features a slim, contemporary profile that fits perfectly in spacious living areas, open-concept rooms, or commercial spaces up to ~1,000 sq ft.
Quiet & High-Performance Operation
Operating as low as 34 dB(A), this unit delivers 24,000 BTU of cooling and effective heating with a compatible outdoor unit. Mitsubishi’s INVERTER technology provides precise temperature control and energy efficiency.
Advanced Filtration & Smart Controls
Includes multi-stage air filtration and supports optional Wi-Fi connectivity via Mitsubishi’s app for remote control and energy management.
Flexible Single-Zone Application
Pairs with PUZ or MUZ-GX outdoor units for precise single-zone comfort. Multiple modes like Powerful and Econo Cool tailor performance to your needs.
Trusted Mitsubishi
Backed by Mitsubishi’s 10-year parts warranty when installed and registered by a licensed contractor, the MSZ‑GX24NL offers durable, long-lasting comfort.
What our Experts Think
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Efficient 2‑Zone Multi‑Climate Outdoor Unit: The Mitsubishi MXZ‑2D20NL 20,000 BTU 2‑Zone Heat Pump Unit is engineered to deliver reliable year‑round heating and cooling for two indoor zones, making it ideal for small to medium homes, apartments, or multi‑room setups.
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Balanced Performance: Rated up to 20 SEER2 and 10 HSPF2, it provides high energy efficiency with lower operating costs and solid seasonal performance.
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Inverter‑Driven Twin Rotary Compressor: Variable‑speed compressor modulation ensures smooth capacity adjustment, excellent comfort control, and reduced cycling for quieter operation.
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R‑454B Next‑Gen Refrigerant: Uses environmentally improved R‑454B refrigerant, offering reduced global warming potential without compromising heating and cooling capacity.
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Quiet & Durable Build: Designed with Blue Fin anti‑corrosion coating and robust protections (thermal, high pressure, fan motor safeguards), this outdoor unit delivers dependable performance with quiet sound levels (~51 dB cooling / ~55 dB heating).
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Wide Operating Range: Supports broad temperature ranges and maintains stable output even in colder conditions—helpful for year‑round comfort.
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Flexible Piping & Layout: Supports total piping lengths up to 164 ft and connects two indoor units with extended layout flexibility, making it easy to tailor system design to room sizes and priorities.
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Ideal for Multi‑Room Comfort: A top choice for homeowners seeking zoned comfort and energy efficiency with the flexibility to pair various indoor unit types (wall, cassette, ducted, floor‑mounted).
Q&A
Q: What is the Mitsubishi MAC‑334IF‑E?
A: The MAC‑334IF‑E is a system control interface module that enables advanced control and network communication for Mitsubishi M‑Series indoor HVAC units.
Q: What key functions does it perform?
A: It allows M‑Series indoor units to communicate with the CITY MULTI® control network via M‑Net, enabling centralized control and system integration.
Q: Can it connect to remote controllers?
A: Yes — it lets compatible M‑Series units connect to MA series remote controllers and provides an input for remote On/Off control via an external signal.
Q: What additional control capabilities does it support?
A: The interface can control external systems such as auxiliary heaters, humidifiers, and equipment status/error outputs using its I/O outputs.
Q: Does it support advanced modes?
A: Yes — it supports Dual Auto mode configuration via DIP switch for automatic switching between heating and cooling based on set and ambient temperatures.
Q: Is additional power required?
A: Some functions require an external 12 V DC power supply to operate properly.
Q: What’s included in the interface setup?
A: It typically includes the MAC‑334IF‑E module with connection cables and mounting hardware for linking to the M‑Series indoor unit and control network.
Q: What are typical installation conditions?
A: Designed for indoor use only (32–104 °F / 0–40 °C) with no condensation, and connects directly to the indoor unit’s communication port.
Maintenance Tips
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Dual‑zone capacity: Designed to connect up to 2 indoor units for independent temperature control in multiple spaces.
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R‑454B refrigerant: Uses the newer low‑GWP refrigerant for improved environmental performance.
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Balanced cooling & heating: ~20,000 BTU rated cooling with up to ~24,000–25,800 BTU heating depending on configuration.
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High efficiency: SEER2 up to ~20, HSPF2 up to ~10 for strong seasonal efficiency.
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Quiet operation: Outdoor sound levels around ~51–55 dB(A).
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Inverter‑driven twin rotary compressor: Smooth modulation, reduced cycling, and energy savings.
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Durable outdoor design: Blue Fin anti‑corrosion coating and standard base pan heater improve weather resilience.
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Flexible piping: Supports total piping length up to ~164 ft with standard flared refrigerant connections.
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Compact footprint: Roughly 33‑1/16" W × 13" D × 27‑15/16" H for easier installation.
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Single‑phase 208/230 V operation: Standard residential electrical compatibility.
Damage 
Loss 
Theft 
