MRCOOL DIY 5th Gen Mini Split - 4-Zone 48,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 6K + 6K + 6K + 6K Wall Mount Air Handlers - DIY5-4Z-48HP-6K6K6K6K
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 4-Zone system includes four 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 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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Perfect for Smaller Rooms or Offices: Equipped with four 6K wall-mounted air handlers, this setup is ideal for efficiently conditioning compact spaces like bedrooms, offices, or studios.
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Consistent Comfort Across Zones: Each unit operates independently, allowing precise temperature control and energy management in every room.
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True DIY Installation: The 5th Gen system includes MRCOOL’s pre-charged Quick Connect line sets, enabling homeowners to install without vacuum pumps or specialized tools.
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Smart Home Integration: Compatible with the MRCOOL app, Alexa, and Google Assistant for seamless, remote temperature control.
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Whisper-Quiet & Energy Efficient: The inverter-driven compressor and advanced heat pump technology deliver powerful cooling and heating while keeping operation nearly silent and cost-efficient.
Q&A
Q: What is the MRCOOL DIY5-4Z-48HP-6K6K6K6K system?
A: It’s a 4-zone, 48,000 BTU ductless mini split air conditioner and heat pump from MRCOOL’s 5th Generation DIY Series, designed for efficient, customizable comfort.
Q: What air handler sizes are included?
A: The system comes with four 6,000 BTU wall-mounted air handlers, ideal for small rooms or zones requiring precise temperature control.
Q: Is this system DIY-installable?
A: Yes. MRCOOL’s pre-charged Quick Connect lines allow easy, professional-quality installation without special tools or HVAC expertise.
Q: Does it provide both heating and cooling?
A: Yes. The inverter-driven heat pump delivers powerful cooling in summer and reliable heating in winter.
Q: Can each zone be controlled independently?
A: Absolutely. Each air handler offers individual temperature control with smart Wi-Fi operation via the MRCOOL SmartHVAC app, Alexa, or Google Assistant.
Maintenance Tips
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Clean air filters monthly — Rinse each 6K air handler’s filter with lukewarm water, dry completely, and reinstall for strong airflow.
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Dust indoor units regularly using a soft cloth to keep vents clear and efficient.
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Inspect outdoor condenser coils every 3–6 months and gently remove dirt, debris, or leaves.
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Maintain at least 24 inches of clearance around the condenser for proper ventilation.
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Flush condensate drain lines every few months with a mild vinegar solution to prevent clogs or odors.
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Check refrigerant line insulation yearly for cracks or wear to ensure cooling efficiency.
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Use “Fan Only” or self-cleaning mode after cooling cycles to dry coils and prevent mold buildup.
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Monitor performance via the MRCOOL SmartHVAC app for maintenance alerts and energy tracking.
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Operate all four zones evenly to maintain system balance and reduce strain on the condenser.
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Schedule annual maintenance with a qualified HVAC technician to inspect refrigerant pressure, wiring, and connections.
