Heat or cool two spaces with ease using the MRCOOL DIY 5th Gen Multi-Zone 18,000 BTU 23.9 SEER2 2 Zone Ductless Heat Pump Split System (12K + 12K Air Handlers). Designed specifically for homeowners, this dual-zone ductless system delivers year-round comfort without the cost of professional installation.

With its 18,000 BTU condenser, this DIY Series system powers two 12,000 BTU wall-mounted air handlers, each capable of conditioning up to 550 sq. ft., making it ideal for bedrooms, offices, living rooms, or medium-size spaces. As a heat pump, it efficiently cools in summer and reverses operation in winter to provide reliable heating, ensuring true four-season performance.

Why Choose the MRCOOL DIY 5th Gen 18K Dual-Zone System?

• True DIY® Installation – Install it yourself with no special training or tools required.

• Pre-Charged Quick Connect® Line Sets – Pre-filled with eco-friendly R-454B refrigerant, eliminating the need for vacuuming or charging.

• Energy Efficient – 23.9 SEER2 rating with DC inverter technology for lower energy bills.

• Multi-Zone Comfort – Independently control each air handler for personalized comfort in different rooms.

• Smart Controls – Manage your system from anywhere via the MRCOOL Smart Controller App, Amazon Alexa, or Google Home.

• All-in-One Performance – Cooling, heating, dehumidifying, auto mode, sleep mode, and even low ambient cooling for server rooms or cold climates.

• Peace of Mind – Includes a 7-Year Compressor Warranty (with optional lifetime upgrade), 5-Year Parts Warranty, and lifetime technical support.

Added Benefits

• Follow Me® Function – Airflow automatically adjusts to the location of the remote.

• Gold Fin® Condenser – Corrosion-resistant coating ensures durability in all weather.

• Quiet Operation & Mute Mode – Enjoy comfort without unnecessary noise or bright LED displays.

• Auto Restart – System resumes previous settings automatically after a power outage.

• Easy Maintenance – Built-in filter alerts and diagnostic display codes make upkeep simple.

The MRCOOL DIY Multi-Zone 18K 2 Zone System (12K + 12K) is perfect for homeowners who want the comfort of a professional-grade HVAC solution with the savings and satisfaction of a DIY project.

👉 Looking for more zones? The DIY Multi 27,000 BTU System supports up to four indoor units.