MRCOOL DIY Mini Split – 54,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump with 50 ft. Install Kit, DIYM448HPW09C410
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Introducing the 4th Generation MRCOOL Mini Split, an all-inclusive solution for cooling and heating up to four separate rooms. This comprehensive package features the DIY 48,000 BTU Multi-Zone Condenser, accompanied by two 9,000 BTU Wall Mounted Air Handlers, one 12,000 BTU Wall Mounted Air Handler, and one 24,000 BTU Wall Mounted Air Handler. Also included are four remotes and four 50 ft. Installation Kits, providing everything needed for seamless installation. The standout feature of this system is its user-friendly design, allowing for easy self-installation.
Here’s what you’ll receive:
- MRCOOL DIY Multi Zone 5-Zone Condenser, 4th Gen Series (SKU: DIY-MULTI5-48HP230C)
- MRCOOL DIY 4th Generation 9K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi (SKU: DIY-09-HP-WMAH-230C25) – Quantity: 2
- MRCOOL DIY 4th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi (SKU: DIY-12-HP-WMAH-230C25) – Quantity: 1
- MRCOOL DIY 4th Generation 24K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi (SKU: DIY-24-HP-WMAH-230C25) – Quantity: 1
- MRCOOL DIY 50ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor, 4th Generation (SKU: DIY50-1412C) – Quantity: 3
- MRCOOL DIY 50ft 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, 4th Generation (SKU: DIY50-3858C)
When all air handlers are operating simultaneously, their combined BTU output will never exceed the 48K BTU rating of the Condenser.
Condenser Features:
- Energy Efficient: This 5 Zone condenser, in conjunction with select MRCOOL air handlers, achieves an impressive 20.5 SEER efficiency rating.
- All-Weather Performance: Capable of heating even in temperatures as low as 5°F.
- Lifetime Warranty: The only condenser on the market with a limited lifetime compressor warranty. Simply register for the MRCOOL Care Program to enjoy this lifetime warranty.
Air Handler, 9K BTU (Quantity: 2):
- Coverage: Covers up to 375 sq. ft.
- Versatility: Equipped with multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Smart Control: Manageable via Apple or Android smartphones using the Smart HVAC app.
- Easy Installation: Lightweight and compact design facilitates easy installation on most interior walls with the included mounting plate.
Air Handler, 12K BTU (Quantity: 1):
- Coverage: Covers up to 500 sq. ft.
- Versatility: Equipped with multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Smart Control: Manageable via Apple or Android smartphones using the Smart HVAC app.
- Easy Installation: Lightweight and compact design facilitates easy installation on most interior walls with the included mounting plate.
Air Handler, 24K BTU (Quantity: 1):
- Coverage: Covers up to 1,000 sq. ft.
- Versatility: Equipped with multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Smart Control: Manageable via Apple or Android smartphones using the Smart HVAC app.
- Easy Installation: Lightweight and compact design facilitates easy installation on most interior walls with the included mounting plate.
Line Set 50 ft. (Quantity: 4):
- Connectivity: Connects the 4th Generation MRCOOL Condenser to the MR COOL Air Handlers – 9K, 12k, and 36K BTU.
- Pre-Charged: Comes pre-charged with the precise amount of R-410A refrigerant.
- DIY Installation: Installation can be performed without the need for a certified technician, saving you money.
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Product Overview
 Covers 2250 sq. ft.      Â
 DIY Installation
 Wall Mounted         Â
  Number of Zones: 4
 Voltage: 208 to 230     Â
 Outdoor Operating Temp (Cool): 5°F to 122°F
 Outdoor Operating Temp (Heat): 5°F to 75.2°F
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What's Included
Air Handler

Condenser

Line Set

Wall Sleeve

Communication Wire

Remote Control

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Specifications and Dimensions
Condenser Specifications Product Dimensions 37.48″W x 16.34″D x 52.48″H Cooling Capacity 48,000 BTU Heating Capacity 48,000 BTU Zone Capacity 5 Min Ambient Cool 5F ~ 122F Min Ambient Heat 5F ~ 75.2F SEER 20.5 EER 11 Voltage Requires a minimum of 208V-230V/60HZ/40-60A (please check your home meets this electrical requirement prior to purchase) Registered Warranty 7 Years Replacement on Condenser, 5 Years Parts Air Handler 9K BTU Product Dimensions 31.57″W x 7.44″D x 11.69″H Mount Type Wall Cooling Capacity 9,000 BTU Heating Capacity 9,000 BTU Registered Warranty 5 Years Parts Modes Auto – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
SleepAir Handler 12K BTU Product Dimensions 31.57″W x 7.44″D x 11.69″H Mount Type Wall Cooling Capacity 12,000 BTU Heating Capacity 12,000 BTU Registered Warranty 5 Years Parts Modes Auto – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
SleepAir Handler 24K BTU Product Dimensions 42.52″W x 8.90″D x 13.19″H Mount Type Wall Cooling Capacity 23,000 BTU Heating Capacity 25,000 BTU Registered Warranty 5 Years Parts Modes Auto – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
SleepLine Set Length 50 Feet Liquid Line Size 3/8″ Suction Line Size 5/8″ Line Set Length 50 Feet Liquid Line Size 1/4″ Suction Line Size 1/2″ -
Coverage Area
When considering the purchase of our cooling or heating system, it’s essential to determine the appropriate BTU output based on the square footage of your space. Please refer to the following coverage chart for guidance:
- Square Feet: 180-375 | BTU = 9K
- Square Feet: 376-500 | BTU = 12K
- Square Feet: 501-750 | BTU = 18K
- Square Feet: 751-1,000 | BTU = 24K
- Square Feet: 1,001-1,500 | BTU = 36K
Keep in mind that additional factors, such as insulation quality, ceiling height, and the presence of appliances, can influence performance. For personalized assistance in selecting the optimal solution for your needs, don’t hesitate to reach out to our experienced Sales Team.
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Handling Line Sets
When installing your MRCOOL system, handle refrigerant lines carefully to ensure optimal performance and prevent damage.
Bending the Copper Lines: Maintain a minimum 4-inch bend radius and use smooth curves instead of sharp angles to protect the lines and ensure proper refrigerant flow.
Avoid Repeated Bending: Bending copper lines more than three times can harden and weaken them, increasing the risk of breakage. Handle with care and minimize adjustments.
For best results, use gradual bends and consult a licensed professional or our support team if needed.

























