MRCOOL DIY 5th Gen Mini Split - 5-Zone 48,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 12K + 9K + 9K + 9K Wall Mount Air Handlers - DIY5-5Z-48HP-18K12K9K9K9K
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 48K BTU 5-Zone system includes two 18K, one 12K and two 9K 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 21.8 and 10 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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Balanced 5-Zone Comfort: 48,000 BTU condenser with 18K + 12K + 9K + 9K + 9K air handlers delivers efficient heating and cooling across multiple rooms.
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Custom Temperature Control: Each zone operates independently for personalized comfort.
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DIY-Friendly Installation: Engineered for easy setup without professional help, saving time and cost.
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Quiet & Efficient: Inverter technology minimizes noise while maximizing energy savings.
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Smart Connectivity: Compatible with mobile apps for remote control, scheduling, and monitoring.
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Durable Design: Corrosion-resistant condenser ensures reliable performance in various climates.
Q&A
Q: What type of system is the MRCOOL DIY5-5Z-48HP?
A: It is a 5-zone, 5th Generation ductless mini split with air conditioning and heat pump functionality.
Q: What is the total cooling capacity?
A: The system delivers 48,000 BTU across all five zones.
Q: What are the capacities of the individual air handlers?
A: One 18K BTU, one 12K BTU, and three 9K BTU wall-mounted units.
Q: Is this system DIY-friendly?
A: Yes, it comes with pre-charged lines for easy do-it-yourself installation.
Q: Can each zone be controlled independently?
A: Yes, each air handler has its own thermostat for personalized temperature control.
Q: Does it provide heating as well as cooling?
A: Yes, the heat pump condenser ensures efficient year-round heating and cooling.
Q: What are the main benefits of this system?
A: Energy efficiency, wireless control, customizable zone settings, and simple DIY installation without professional setup.
Maintenance Tips
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Clean or replace air filters monthly for all five zones to maintain optimal airflow and efficiency.
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Wipe indoor air handler coils and vents with a soft, damp cloth to remove dust and debris.
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Inspect outdoor condenser coils regularly for dirt, leaves, and debris; clean gently with a soft brush or hose.
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Ensure proper clearance around the outdoor unit to maintain airflow and system performance.
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Check refrigerant lines and connections periodically for leaks or damage.
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Clean drain lines and pans to prevent clogs and water buildup.
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Operate all zones regularly in heating and cooling modes to keep components lubricated and functional.
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Monitor system performance via the MRCOOL app for alerts, efficiency updates, and maintenance reminders.
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Schedule annual professional inspections to verify refrigerant levels, electrical connections, and overall system health.
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Do not block vents or air handlers to ensure even airflow and efficient operation across all zones.
