MRCOOL DIY Mini Split – 51,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump, DIY-B-348HP091824
$5,284.00 Original price was: $5,284.00.$4,804.00Current price is: $4,804.00.
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Experience unparalleled comfort with the 4th Generation MRCOOL DIY Mini Split, meticulously designed to effortlessly cool and heat your residential or commercial space. This comprehensive system includes a 48K BTU Multi-Zone Condenser and individual wall-mount air handlers boasting capacities of 9K, 18K, and 24K BTUs. What sets this unit apart is its user-friendly installation process, allowing you to set it up without the need for costly HVAC professionals or specialized tools.
Mini Split System Components:
- Condenser:Â MRCOOL DIY Multi Zone 5-Zone 48K BTU Condenser, 4th Gen Series, SKU: DIY-MULTI5-48HP230C
- Air Handler (9K BTU):Â MRCOOL DIY 4th Generation 9K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, SKU: DIY-09-HP-WMAH-230C25
- Air Handler (18K BTU):Â MRCOOL DIY 4th Generation 18K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, SKU: DIY-18-HP-WMAH-230C25
- Air Handler (24K BTU):Â MRCOOL DIY 4th Generation 24K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, SKU: DIY-24-HP-WMAH-230C25
Note that this system does not include line sets. Make sure to add them to your order!
When all air handlers operate simultaneously, their combined BTU output will not exceed the rating of the condenser, ensuring optimal performance. For added convenience, lineset and communication wire for each air handler are available for purchase separately.
Condenser Highlights:
- 48K BTU capacity
- Energy Efficiency: Achieves an impressive 20.5 SEER2 rating, qualifying for energy or tax rebates
- Reliable Performance: Operates efficiently even in extreme temperatures as low as -5°F
- Peace of Mind: Backed by a 7-year compressor and 5-year parts warranty; register for the MRCOOL Care Program for lifetime compressor coverage
Air Handler Features (9K BTU):
- Generous Coverage: Covers areas ranging from 180 to 375 sq. ft., providing consistent comfort throughout your space
- Versatility: Offers multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP
- Smart Control: Easily manage settings via the Smart HVAC app on your Apple or Android smartphone
- Hassle-Free Installation: Lightweight and compact design facilitates straightforward installation on most interior walls, complete with a mounting plate for added convenience.
Air Handler Features (18K BTU):
- Generous Coverage: Covers areas ranging from 375 to 750 sq. ft., providing consistent comfort throughout your space
- Versatility: Offers multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP
- Smart Control: Easily manage settings via the Smart HVAC app on your Apple or Android smartphone
- Hassle-Free Installation: Lightweight and compact design facilitates straightforward installation on most interior walls, complete with a mounting plate for added convenience.
Air Handler Features (24K BTU):
- Generous Coverage: Covers areas ranging from 500 to 1,000 sq. ft., providing consistent comfort throughout your space
- Versatility: Offers multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP
- Smart Control: Easily manage settings via the Smart HVAC app on your Apple or Android smartphone
- Hassle-Free Installation: Lightweight and compact design facilitates straightforward installation on most interior walls, complete with a mounting plate for added convenience.
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Product Overview
 Covers 2125 sq. ft.      Â
 DIY Installation
 Wall Mounted         Â
  Number of Zones: 3
 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 5°F ~ 122°F Heat Mode – Outdoor Operating Temperature Range 5°F ~ 75.2°F SEER2 20.50 EER2 11 HSPF2 9.2 Voltage Requires a minimum of 208V-230V/60HZ/18-25A 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 Cool, Heat or Fan-Only)
Cool
Heat
Dry
Fan Only
SleepAir Handler — 18K BTU Product Dimensions 34.61″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 Cool, Heat or Fan-Only)
Cool
Heat
Dry
Fan Only
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 Cool, Heat or Fan-Only)
Cool
Heat
Dry
Fan Only
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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.





















