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Heat or cool two rooms with ease using the MRCOOL DIY® 5th Gen Multi-Zone 18,000 BTU 23.9 SEER2 2-Zone Ductless Heat Pump Split System – 6K + 18K. Perfect for bedrooms, offices, or living spaces, this system combines one 6,000 BTU air handler (ideal for ~200 sq. ft.) and one 18,000 BTU air handler (up to ~800 sq. ft.), powered by a high-efficiency 18,000 BTU condenser. Engineered for true do-it-yo…