MRCOOL DIY 4th Gen Multi-Zone 3-Zone 48,000 BTU 21 SEER (12K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump

DIY 4th Gen Multi-Zone 3-Zone 48,000 BTU 21 SEER (12K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump

Effortlessly heat or cool up to three rooms with the MRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 3 Zone Ductless Heat Pump Split System (12K + 18K + 18K). This advanced system is part of the DIY Series, designed for easy, tool-free installation—no professional training or expensive specialty tools required. With a powerful 48,000 BTU condenser, you’ll enjoy optimal comfort while saving thousands on installation costs.

This system includes one 12,000 BTU air handler (ideal for spaces up to 550 sq. ft.) and two 18,000 BTU air handlers (each covering up to 800 sq. ft.), providing zoned temperature control for customized comfort. As a heat pump, it efficiently operates in both heating and cooling modes, pulling warmth from the outside air during colder months.

The MRCOOL DIY Multi-Zone system features pre-charged Quick Connect lines filled with eco-friendly R-410A refrigerant, allowing for a hassle-free setup without an HVAC technician. Step-by-step video guides make installation even easier.

Stay in control with the MRCOOL Smart Controller mobile app, which lets you monitor and adjust temperatures from anywhere using your Apple or Android device. You can also operate the system with Amazon Alexa or Google Home for hands-free voice control. Each indoor air handler features an easy-to-read digital display, which provides temperature readings, troubleshooting codes, and system alerts.

The multi-directional air handlers distribute heated or cooled air evenly, ensuring consistent comfort throughout your home. Switch to Auto Mode, and the system will automatically adjust airflow to maintain your desired temperature. In Sleep Mode, energy use is reduced for lower utility bills while keeping you comfortable overnight.

The system also features a dehumidification mode for humid days and an emergency operation mode for quick cooling when needed. A timer function lets you schedule operation to minimize energy use and costs.

Built-in alerts notify you when air filters need cleaning or if the system is low on refrigerant. For added convenience, the LED display and sound alerts can be muted to maintain a quiet, distraction-free environment. In case of a power outage, the system will automatically restart with its previous settings once power is restored.

Designed for year-round performance, the MRCOOL DIY Multi-Zone system offers a cost-effective, energy-efficient, and easy-to-install heating and cooling solution—perfect for homeowners looking for professional-quality climate control without the professional installation costs.

• 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
• 16 Ft Line Set For Each Air Handler

Your Satisfaction with MRCOOL is Guaranteed:

• 5 Year Parts Warranty, 7 Year Compressor Warranty
• Lowest Price Guarantee