MRCOOL DIY Mini Split – 45,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump, DIY-B-348HP091818
$5,599.00 Original price was: $5,599.00.$4,704.00Current price is: $4,704.00.
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Experience ultimate comfort and control with the 4th Generation MRCOOL DIY Mini Split, a comprehensive solution for cooling and heating residential, commercial, or other spaces. This package includes essential components: a 48K BTU Multi-Zone Condenser, a 9K BTU Wall Mount Air Handler, and two 18K BTU Air Handlers. What sets this system apart is its DIY installation feature, eliminating the need for costly HVAC technicians or specialized tools.
Mini Split System Components:
- MRCOOL DIY Multi Zone 5-Zone 48K BTU 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
- MRCOOL DIY 4th Generation 18K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, SKU: DIY-18-HP-WMAH-230C25 (x2)
Note: Lineset and communication wire for each air handler are not included.
Condenser 48K BTU:
- Energy Efficient: This 48K BTU condenser boasts an impressive 20.5 SEER efficiency rating, qualifying for significant energy or tax rebates.
- Extreme Temperature Operation: Capable of heating even in temperatures as low as -5°F.
- Worry-Free Cooling and Heating: Backed by a 7-year compressor and 5-year parts warranty, with the option to extend compressor coverage to a lifetime through registration in the MRCOOL Care Program.
Air Handler 9K BTU:
- Large Coverage Area: Covers spaces ranging from 180 to 375 sq. ft.
- Versatility: Offers multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Smart Control: Compatible with Apple or Android smartphones via the Smart HVAC app for convenient operation.
- Easy Installation: Lightweight and compact design facilitates straightforward installation on most interior walls using the provided mounting plate.
Air Handler 18K BTU:
- Large Coverage Area: Covers spaces ranging from 375 to 750 sq. ft.
- Versatility: Offers multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Smart Control: Compatible with Apple or Android smartphones via the Smart HVAC app for convenient operation.
- Easy Installation: Lightweight and compact design facilitates straightforward installation on most interior walls using the provided mounting plate.
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Product Overview
 Covers 1875 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 (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 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
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Coverage Area
Please refer to the coverage chart below to determine the required BTUs for cooling or heating your desired area:
- Square Feet: 180-375 | BTU: 9K (SKU: 12345)
- Square Feet: 376-500 | BTU: 12K (SKU: 12346)
- Square Feet: 501-750 | BTU: 18K (SKU: 12347)
- Square Feet: 751-1,000 | BTU: 24K (SKU: 12348)
- Square Feet: 1,001-1,500 | BTU: 36K (SKU: 12349)
Please note that additional factors such as insulation, ceiling height, and the number of appliances in the room may affect performance. For further assistance, please contact our 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.





















