MRCOOL DIY 4th Gen Multi-Zone 4-Zone 48,000 BTU 21 SEER (9K + 9K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump

DIY 4th Gen Multi-Zone 4-Zone 48,000 BTU 21 SEER (9K + 9K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump

The MRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 4-Zone Ductless Heat Pump Split System provides efficient heating and cooling for up to four rooms, offering a cost-effective, customizable climate control solution. This system features a powerful 48,000 BTU condenser paired with two 9,000 BTU air handlers (covering up to 350 sq. ft. each), one 12,000 BTU air handler (ideal for 550 sq. ft.), and one 18,000 BTU air handler (suitable for 800 sq. ft.). Designed as a heat pump system, it operates in both heating and cooling modes, efficiently pulling heat from the outdoors in colder months.

The MRCOOL DIY 4th Gen Multi-Zone system is designed for hassle-free installation, requiring no special tools or professional assistance—allowing you to save thousands on installation costs. The system includes Quick Connect lines pre-charged with eco-friendly R-410A refrigerant, making setup simple and eliminating the need for an HVAC technician. Step-by-step video installation guides are also available to make the process even easier.

This versatile system operates year-round, providing cooling during summer, heating in winter, and dehumidification during humid seasons. You can monitor and adjust each room's temperature using the MRCOOL Smart Controller app, the digital display on each air handler, or through Amazon Alexa and Google Home voice commands. A wireless remote is also included for added convenience.

Each of the four air handlers is equipped with directional airflow control, ensuring even air distribution for maximum comfort. If forced cooling is needed, you can activate manual operation mode for system testing or emergency use. In auto mode, the unit intelligently adjusts airflow based on your preferred temperature, while the drying function effectively manages humidity levels.

For energy efficiency, Sleep Mode gradually adjusts the temperature over an 8-hour cycle, while the programmable timer lets you customize heating and cooling schedules to optimize energy usage. The troubleshooting display provides error codes and maintenance alerts, including low refrigerant warnings and filter cleaning reminders, ensuring your system remains in peak condition. In the event of a power outage, the system automatically restarts with its previous settings. To minimize noise and distractions, the mute function disables alerts and turns off the LED display.

The MRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 4-Zone Ductless Heat Pump Split System is a high-performance, DIY-friendly HVAC solution that delivers customized, energy-efficient climate control for year-round comfort—perfect for homeowners looking for a cost-effective, smart HVAC upgrade.

• 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
• 16ft Line Set for Each Air Handler

Your Satisfaction with MRCOOL is Guaranteed:

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