Heat or cool large and small rooms with smart zone control, whisper-quiet comfort, and simple DIY installation.

The MRCOOL DIY Multi-Zone 27,000 BTU Dual Zone Mini Split gives you flexible heating and cooling for two different-sized rooms—without needing a professional installer. With one 9K unit (up to 350 sq ft) and one 18K unit (up to 800 sq ft), this system is perfect for balancing comfort across uneven spaces like a bedroom and living room.

You can set it up yourself using basic tools. No expensive service calls, just high-efficiency comfort, smart control, and serious savings.

Note: Pricing doesn't include the Line Sets. Available to purchase separately. 

Coverage Area

Please refer to this coverage chart to determine the required BTUs for the area you wish to cool or heat.

• Square Feet: Up to 400 | BTU = 9K
• Square Feet: Up to 550 | BTU = 12K
• Square Feet: Up to 800 | BTU = 18K
• Square Feet: Up to 1050 | BTU = 24K
• Square Feet: Up to 1550 | BTU = 36K

Note about condenser sizes versus total air handler capacity: The total capacity of the combined air handlers may exceed the capacity of the condenser in certain configurations. While this provides more flexibility in your setup, you will need to either shut off one of your air handlers (zones) or reduce the output of all zones.

Features

• Easy DIY Installation
  
• 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

What's Included?

• 1 x MRCOOL 27k DIY 5th Generation 4 Zone Multi-Zone Mini-Split Condenser 230v
• 1 x MRCOOL 9k DIY 5th Generation Mini-Split Air Handler 230v
• 1 x MRCOOL 18k DIY 5th Generation Mini-Split Air Handler 230v

Download Resources

• MRCOOL 5th Gen DIY Quick Start Guide
• MRCOOL Mini-Split Remote Control Owner’s Manual
• MRCOOL 5th Gen DIY Single Zone Varied CFM Coil Performance