MrCool 4th Gen DIY Mini Split | 4 Zone 48k BTU A/C and Heat Pump | 9k+9k+12k+24k Air Handlers

MrCoolSKU: DIYM448HPW09C00

Sale price$5,942.00


Product Details

Experience the ultimate convenience with the MRCOOL DIY Series Multi-Zone System. Available in configurations from 18,000 BTU up to 48,000 BTU and supporting 2 to 5 zones, this versatile ductless HVAC solution ensures optimal performance tailored to your needs. Save thousands on installation costs with its easy-to-install design that requires no special tools or training. Enjoy incredible air comfort all year round, thanks to its heat pump design and DC inverter technology.

The MRCOOL DIY 4th Gen Multi-Zone System is easily customizable for your specific requirements. Mix and match air handlers and ceiling cassettes to create the perfect combination for your home. Contact us for custom configurations to meet your unique needs.

With Quick Connect lines pre-charged with eco-friendly R-410A refrigerant, there's no need for an HVAC technician. Simple video instructions guide you through the installation process, making it a breeze. The system cools during the summer, heats in the winter, and dehumidifies during wet seasons.

Easily monitor and control the temperature in each room using the easy-to-read digital display or the MRCOOL Smart Controller mobile app. If any issues arise, the display on each indoor air handler unit shows troubleshooting codes and alerts. Enjoy wireless operation with the included remote or the mobile app, compatible with Apple and Android devices. Seamlessly integrate the system with Amazon Alexa or Google Home for voice control.

The air handlers provide directional control of heated or cooled air, ensuring even distribution for maximum comfort. In emergency situations, the MRCOOL DIY System can be set to manual mode for testing or maintenance tasks. The auto mode adjusts heat or air conditioning based on your desired temperature, and a drying function controls air temperature while dehumidifying.

Save energy and money with sleep mode, which operates in an 8-hour window once activated. Customize your system with the timer function to limit energy usage and reduce utility bills. If your system runs low on refrigerant, an alert appears on the display, indicating a potential leak.

For a quiet environment, mute each indoor unit to silence alerts and turn off the LED display. In case of a power outage, the system automatically shuts off and restarts with the same settings once power returns. The user manual provides an index for troubleshooting codes and automatic air filter cleaning alerts. Keep indoor units clean with a dry or damp cloth.

Invest with confidence as the system comes with a 7-year compressor warranty (plus a limited lifetime compressor warranty) and a 5-year parts manufacturer warranty.

Discover the ease and convenience of a complete HVAC solution with the MRCOOL DIY Series Multi-Zone System.

Included with the system

  • Condenser (x1)
  • Air Handlers (x4)
  • Lines Set (x4)
  • Remote Controls (x4)


  • Heating Capacity: The DIY can heat at 100% capacity at – 5 degrees Fahrenheit, even with outdoor temperatures as low as -13 degrees Fahrenheit.
  • Cooling Capacity: The DIY can cool at 100% capacity with outdoor temperatures as high as 122 degrees Fahrenheit.
  • Dry Mode: The operating range is from 32°F to 122°F.

Air Handler, 9K BTU; Quantity 2, 12K BTU; Quantity 1, 24K BTU; Quantity 1

  • Large Coverage Area. The 9K air handler covers an area up to 375 sq. ft., the 12K air handler covers an area up to 550 sq. ft. and the 24K air handler covers an area up to 1050 sq. ft.
  • Versatile. Incredibly versatile and equipped with multiple operating modes, which include COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
  • Easy to Control. This unit also has the capability to be controlled by your Apple or Android smartphone through the use of the Smart HVAC app.
  • Convenient Installation. With its light and compact design, it can be installed easily to most interior walls with the included mounting plate.

Line Set 

Options available from 16ft, 25ft, 35ft, 50ft depending on your selection. You can also combine 2 lines with a coupler for 75ft max.

Additional Line Sets & Coupler

If you find the default line set lengths are not sufficient for your application, additional line sets are available for purchase. You will also need a coupler kit, which will allow two standard line sets to be connected together.

Specifications & Dimensions

48K BTU Condenser Specifications

Power Supply  208-230~60,1
Minimum Circuit (Disconnect)
Maximum Fuse (Breaker)
Net Dimension (W x D x H) 37.48 x 16.34 x 52.48
Net Weight 222.89 lbs
Refrigerant R-410A R-410A / 134.04 oz
Piping Size Liquid Side/ Gas Side 1/4" - 3/8"


Air Handler 9K BTU

 Power Supply 208-230~60, 1
Minimum Circuit (Disconnect)
3.0 A
Maximum Fuse (Breaker)
15.0 A
Net Dimension (W x D x H)
31.57 x 7.44 x 11.69
Net Weight 23.8 lbs

Air Handler 12K BTU

 Power Supply 208-230~60, 1
Minimum Circuit (Disconnect)
3.0 A
Maximum Fuse (Breaker)
15.0 A
Net Dimension (W x D x H)
31.57 x 7.44 x 11.69
Net Weight 23.8 lbs

Air 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
Modes Auto - auto selects from Cool, Heat or Fan-Only
Dry - dehumidify
Fan Only

Coverage Area

Please refer to this coverage chart to determine how many BTUs are required for the area you would like to cool or heat.

Square Feet Range Required BTUs
180-375 9,000
376-500 12,000
501-750 18,000
751-1,000 24,000
1,001-1,500 36,000

*Please note that the above table shows the required BTUs based solely on the square footage of the area to be cooled or heated. Other factors, such as insulation, ceiling height, and the number of appliances in the room, can affect the performance of the cooling or heating system.

Information & Guides

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(888) 890-2388

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