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Quick specs
Brand
Mitsubishi
SEER2
28.4
Cooling Capacity
9,000 BTU/h
EER2
15.4
Voltage
208/230V, 60Hz, 1-Phase
Refrigerant
R454B
Liquid Line Size
1/4"
Suction/Gas Line Size
3/8"
Max Line Length
65 ft
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
9,000 BTU Mitsubishi 28.4 SEER2 R-454B Ductless Air Conditioner Mini-Split System
Cooling-Only Ductless System·28.4 SEER2 Efficiency
$2,755.50
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Secure payment
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9,000 BTU Mitsubishi 28.4 SEER2 R-454B Ductless Air Conditioner Mini-Split System
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
In stock
In most items, small items ship same day. Complete systems ship next business day.
$2,755.50
-
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
Quick specs
Brand
Mitsubishi
SEER2
28.4
Cooling Capacity
9,000 BTU/h
EER2
15.4
Voltage
208/230V, 60Hz, 1-Phase
Refrigerant
R454B
Liquid Line Size
1/4"
Suction/Gas Line Size
3/8"
Max Line Length
65 ft
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
The Mitsubishi MSY-GX09NL (indoor) and MUY-GX09NL (outdoor) is a 9,000 BTU, high-efficiency, wall-mounted, cooling-only ductless mini-split system. Ideal for spaces up to 450 sq ft, this R-454B refrigerant system features a 28.4 SEER2 rating, inverter technology for quiet operation, built-in Wi-Fi, and a superior, allergy-fighting air filtration system.
Key Features and Benefits
- High Efficiency & Performance: With a 28.4 SEER2 rating, this system is designed to provide significant energy savings while maintaining consistent cooling.
- Inverter Driven Compressor: Modulates capacity to eliminate hot/cold spots and prevents the energy waste of constant on/off cycling.
- Eco-Friendly R-454B Refrigerant: Complies with current environmental standards.
- Built-in Wi-Fi: Allows you to control, schedule, and monitor the unit via the Mitsubishi Comfort app on your smart devices.
- Advanced Filtration: Includes a hybrid catechin nano platinum filter designed to capture allergens and neutralize contaminants.
- Quiet Operation: The indoor unit operates at very low noise levels (as low as 45-49 dBA), ideal for bedrooms and living areas.
- Durable Design: The outdoor unit features a Blue Fin coating for enhanced corrosion resistance, extending its lifespan in coastal or humid environments.
Ideal Applications
This system is perfect for residential or commercial spaces, including:
- Room additions
- Finished basements
- Sunrooms
- Offices
- Coastal homes requiring corrosion resistance
Technical Specifications
- Capacity: 9,000 BTU/h (cooling only)
- SEER2: 28.4
- Voltage: 208/230V, 1 Phase, 60Hz
- Max Line Length: 65 Feet
- Refrigerant: R-454B
- Outdoor Unit Dimensions: H24.82″ x W14.97″ x L37.04″
- Indoor Unit Dimensions: H13″ x W14.18″ x L34.28″
- Phase: Single
- Hertz: 60
- EER2: 15.4
- Liquid Line Valve Connection: 1/4″
- Suction Line Valve Connection: 3/8″
Key features
- Cooling-Only Ductless System — Mitsubishi wall-mounted mini split
- 28.4 SEER2 Efficiency — high-efficiency inverter technology
- Quiet Inverter Operation — smooth, consistent comfort
- Low-GWP R-454B Refrigerant — next-generation refrigerant
Why homeowners choose NAW
Genuine OEM parts
Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.
Easy online ordering
Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.
30-day hassle-free returns
Ordered the wrong part? Send it back within 30 days.
Help when you need it
Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Outdoor Unit
Height 24.82 in.
Width 14.97 in.
Length 37.04 in.
Indoor Unit
Height 13 in.
Width 14.18 in.
Length 34.28 in.
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
6 verified reviews
TF
Troy F
The 9,000 BTU Mitsubishi mini-split system delivers outstanding cooling performance with remarkable efficiency, making it a game-changer for energy-conscious homeowners. Its compact design, combined with an unbeatable price, ensures top-notch comfort without compromise.
GD
Gary D
The 9,000 BTU Mitsubishi 24.6 SEER R-410A Ductless Air Conditioner Mini-Split System is an absolute game-changer, delivering exceptional cooling power with impressive efficiency! This system combines top-notch performance with an amazing price, making it an unbeatable choice for anyone seeking reliable and efficient cooling.
PD
Paul D
The 9,000 BTU Mitsubishi Mini-Split System is a compact powerhouse, providing exceptional cooling at a price that’s a real steal. Its 24.6 SEER efficiency is astonishing, keeping my energy bills low while delivering cool, comfortable air precisely where I need it.
LW
Lucca W
I recently purchased the 9,000 BTU Mitsubishi 24.6 SEER R-410A Ductless Air Conditioner Mini-Split System, and I’m amazed at how this compact powerhouse not only provides efficient cooling but also does it with an excellent energy efficiency rating, making it a smart and cost-effective choice for anyone seeking comfort and savings.
G
Grace
I recently purchased the 9,000 BTU Mitsubishi Ductless Mini-Split System, and it’s been a revelation! The price was a pleasant surprise, and the equipment’s exceptional performance has turned my room into a comfortable haven with its impressive 24.6 SEER rating. A fantastic investment for both efficiency and affordability!
S
Shiela
The 9,000 BTU Mitsubishi 24.6 SEER R-410A Ductless Air Conditioner Mini-Split System is an absolute powerhouse in a small package! Surprisingly efficient, with an amazing price point, it cools like a charm and makes each space a cozy haven even on the hottest days.
