MRCOOL DIY 4th Gen Multi-Zone 4-Zone 48,000 BTU 21 SEER (9K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump (2024)

MRCOOL DIY Multi-Zone4th Generation 48K BTU Four Zone Ductless Mini Split - A Heating and AC System You Can Install By Yourself!

Heat or coolup to fiverooms with the MRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 4 Zone Ductless Heat Pump Split System - 9K + 9K + 9K + 12K. This DIY Series multi-zone product features easy installation that requires no special tools or training. You'll save thousands of dollars on installation and you can get the amazing air comfort of yourdreams due to the condenser’s 48,000 BTU capacity. This units consists of four 9,000 btu air handlers (350 square feet) and one 12,000 btu (550 square feet). A heat pump by design, this ductlessHVACsolution can run in reverseand pull in heat from the outdoors when in a heating mode.It comes with a 7 year compressor warranty, (Plus a limited lifetime compressor warranty), 5 year parts manufacturer warranty!

MRCOOL DIY 4th GenMultizone 48,000 BTU systems can support up toFIVEindoor units.

TheMRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 4 Zone Ductless Heat Pump Split System - 9K + 9K + 9K + 12Kunits are super easy to install and require no special training or expensive specialty tools. The DIY system includes Quick Connect lines that are pre-charged with eco-friendlyR-410A refrigerant.Due to theQuick Connect line set, you don’t have tohire an HVAC technician to complete the install. We also have simple video instructions on how to install a DIY Multi-Zone unit yourself!

TheMRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 4 Zone Ductless Heat Pump Split System - 9K + 9K + 9K + 12Kcan cool through the Summer, heat through the Winter, and dehumidify through the wet seasons. Plus, youcan quickly check the temperature of each room in your home from the easy to read digital display or from theMRCOOL Smart Controller mobile app. The display on the front of each indoor air handler unit can also display troubleshooting codes and alerts, so you are always aware of any issues with your system. Operate each unit wirelessly with either the included remote or with theMRCOOL Smart Controller app for Apple or Android devices. Youalso have the ability tocontrol your mini-split unit with Amazon Alexa or Google Home.

The four MRCOOL DIY Multi-Zone air handlers included in this set provide directional control of the heated or cooled air. This distributes the air evenly so everyone in the room can stay comfortable. If you are in a situation that requires forced cooling, you can set yourMRCOOL DIY System to manual with the button located on the right side of the unit under the front panel. In this emergency operation mode, you can test the cooling operation of your unit after installation or to complete a maintenance task.

In auto mode, each unit provides air for your home at your desired comfort level. Set your desired temperature, and the HVAC unit will determine how much heat or air conditioning is needed. You can also set this system to a drying function, which will continue to control the space’s air temperature while dehumidifying.

Use the sleep mode at night to save money on your utilities bills and use less energy. Sleep mode operates in an 8 hour window once turned on.

TheMRCOOL DIY Multi-Zone 48,000 BTU 21 SEER four-Zone Ductless Heat Pump Split Air Conditioner System - 9K + 9K + 9K + 12Kcomes with many options, so you can customize your system based on your needs. Limit your energy usage and save money on your utility bill by using the system’s timer function. If your system begins to run low onrefrigerant, an alert will appear on the easy-to-read display on the front of each air handler, letting you know there may be a leak. If you desire to keep a room quiet and minimize lighted alerts, you can mute each indoor unit. By muting the system, the buzzer for alerts will not sound and the LED lit display will turn off. Should the unfortunate event of a power outage occur, the MrCool system will automatically shut off and then back on with the same settings once power returns.

Easily maintainyourMRCOOL DIY Multi-Zone 48,000 BTU 21 SEER Four-Zone Ductless Heat Pump Split Air Conditioner Unitwith alerts and reminders. Any troubleshooting codes will appear on the front display and the user manual contains an index for common codes. Air filter cleaning alerts are automatic, and you can easily keep the minimal indoor units clean with a dry or damp cloth.


  • Easy DIY® Installation
  • "Pre-charged DIY®
  • Quick Connect Line Set"
  • Simple to Use
  • Multi-room Comfort
  • Energy Efficient DC Inverter
  • 100% Sealed System
  • Gold Fin® Condenser
  • Eco Safe R-410A Refrigerant
  • Smartphone App Controls
  • Lifetime Technical Support
  • Follow Me® Feature
  • Low Ambient Cooling
MRCOOL DIY 4th Gen Multi-Zone 4-Zone 48,000 BTU 21 SEER (9K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump (2024)
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