MRCOOL DIY Mini Split – 54,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP12121218
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Introducing the 4th Generation MRCOOL Mini Split system, featuring a DIY 48,000 BTU Multi-Zone Condenser and a comprehensive array of components to meet your climate control needs. This package boasts three 12,000 BTU Wall Mounted Air Handlers, one 18,000 BTU Wall Mounted Air Handler, and four Remotes, offering unparalleled versatility and convenience. The highlight of this system is its user-friendly installation process, empowering you to set it up effortlessly.
Package Contents:
- MRCOOL DIY Multi Zone 5-Zone 48K BTU Condenser, 4th Gen Series, DIY-MULTI5-48HP230C
- MRCOOL DIY 4th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-12-HP-WMAH-230C25 (x3)
- MRCOOL DIY 4th Generation 18K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-18-HP-WMAH-230C25
Please note that line sets are not included; ensure to add them to your order.
When all air handlers operate simultaneously, their combined BTU output will never exceed the rating of the condenser, ensuring optimal performance.
Condenser Features:
- Energy Efficiency: This 5-Zone condenser, when paired with select MRCOOL air handlers, achieves an impressive 20.5 SEER efficiency rating.
- All-Weather Performance: Capable of delivering heating performance even at temperatures as low as 5°F.
- Lifetime Warranty: Enjoy peace of mind with the industry-exclusive limited lifetime compressor warranty. Simply register for the MRCOOL Care Program to activate the lifetime warranty.
Air Handler, 12K BTU (Quantity: 3):
- Wide Coverage: Each handler covers an area of up to 500 sq. ft.
- Versatility: Equipped with multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Smart Control: Easily manage settings using your Apple or Android smartphone through the Smart HVAC app.
- Easy Installation: With its lightweight and compact design, installation is a breeze using the included mounting plate.
Air Handler, 18K BTU (Quantity: 1):
- Extended Coverage: This handler effectively covers an area of up to 750 sq. ft.
- Versatility: Offers various operating modes for tailored comfort.
- Smart Control: Seamlessly integrates with your smartphone for intuitive control.
- Hassle-Free Installation: Designed for easy installation on most interior walls using the included mounting plate.
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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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Specifications and Dimensions
Condenser 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 Cool Mode – Outdoor Operating Temperature Range 5F ~ 122F Heat Mode – Outdoor Operating Temperature Range 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 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 18K BTU Product Dimensions 42.52″W x 8.90″D x 13.19″H Mount Type Wall Cooling Capacity 18,000 BTU Heating Capacity 18,000 BTU Registered Warranty 5 Years Parts Modes Auto – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
Sleep -
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.





















