MRCOOL DIY 5th Gen Mini Split - 5-Zone 48,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 18K + 18K + 9K + 9K Wall Mount Air Handlers - DIY5-5Z-48HP-18K18K18K9K9K
Take control of your home’s comfort with the MRCOOL® 5th Gen DIY® Multi-Zone Mini Split System — the ultimate solution for efficient, customizable, and true DIY-friendly heating and cooling.
This powerful 55K BTU 5-Zone system includes one 18K, one 9K and three 6K wall mounted air handlers.
Features
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Customize mini-split system: choose the perfect line set length for each zone just above the “Add to Cart” button.
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Ultra-Efficient Cooling & Heating: Enjoy up to 22 and 10.6 HSPF2-4 for energy-efficient year-round comfort.
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DIY-Friendly QuickConnect® Installation: No vacuuming or professional tools needed — pre-charged line sets make setup fast and simple.
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Smart Voice & App Control: Full control via SmartHVAC app, Alexa, Google Assistant, or included wireless remote.
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Eco-Conscious Refrigerant: Uses R-454B refrigerant with a low environmental impact.
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Industry-Leading Warranty: Includes 5-year parts, 7-year compressor, and lifetime replacement with MRCOOL® Care registration.
What our Experts Think
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5-Zone Climate Control: Includes five wall-mounted air handlers (18K + 18K + 18K + 9K + 9K) for individualized heating and cooling in multiple rooms.
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Powerful 48,000 BTU Capacity: Efficiently handles large homes or open layouts, delivering consistent comfort throughout each zone.
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Ductless Design: Eliminates the need for extensive ductwork, making installation faster and more flexible.
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Heat Pump Functionality: Provides both heating and cooling for year-round climate control.
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DIY-Friendly Installation: Designed for straightforward setup by homeowners, with clear instructions and minimal professional assistance needed.
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Energy-Efficient Operation: Multi-zone inverter technology adjusts power to save energy while maintaining optimal comfort.
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Smart Connectivity: Compatible with WiFi and MRCOOL app for remote control and scheduling convenience.
Q&A
Q: What is the MRCOOL DIY 5th Gen 5-Zone Mini Split?
A: A 48,000 BTU ductless air conditioner and heat pump condenser with five wall-mounted air handlers (18K + 18K + 18K + 9K + 9K), designed for customizable heating and cooling across multiple zones.
Q: What are the key benefits?
A: Energy-efficient multi-zone temperature control, DIY installation, WiFi-enabled smart control, and quiet, consistent airflow for large homes or multi-room spaces.
Q: How does the 5-zone system help?
A: It allows independent temperature control in each zone for maximum comfort and energy savings.
Q: Who is this system ideal for?
A: Homeowners needing efficient, ductless heating and cooling for large spaces, multi-room setups, or retrofits without major construction.
Q: What makes it stand out?
A: DIY-friendly installation, high BTU capacity, smart control options, and flexible wall-mounted air handlers for precise climate management.
Maintenance Tips
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Clean Filters Monthly: Wash or vacuum wall unit filters to maintain airflow and efficiency.
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Inspect Outdoor Condenser: Remove debris, leaves, and dust to ensure proper heat exchange.
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Check Refrigerant Lines: Look for leaks or damage to prevent performance loss.
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Monitor Airflow: Ensure vents are unobstructed in all five zones for balanced cooling/heating.
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Seasonal Professional Check: Have a certified technician inspect electrical connections, coils, and refrigerant levels annually.
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Use the MRCOOL App: Track performance, set schedules, and receive maintenance alerts.
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Avoid Obstructions: Keep 2–3 feet around indoor and outdoor units clear.
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Drain Line Care: Ensure condensate drain lines are clear to prevent water buildup.
