MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 9K + 9K + 9K + 6K + 6K Ceiling Cassette Air Handlers - DIY5-6ZC-55HP-18K9K9K9K6K6K
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 6-Zone system includes one 18K, three 9K and two 6K ceiling cassette 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 SEER2 and 10.6 HSPF2-4 for energy-efficient year-round comfort.
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Low-Profile Ceiling Cassette Design: Flush-mounted unit fits between standard ceiling joists for a clean, built-in look.
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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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Custom Multi-Zone Comfort: Six-zone setup provides independent climate control for rooms of varying sizes.
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Powerful 55,000 BTU Output: Efficiently heats and cools larger homes or light commercial spaces.
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Ceiling Cassette Air Handlers: Low-profile, ceiling-mounted units deliver discreet and evenly distributed airflow.
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DIY-Friendly Installation: 5th Gen MRCOOL system allows for simplified setup without professional HVAC expertise.
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Energy Efficient: Designed to minimize electricity use while maintaining consistent indoor comfort.
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Trusted MRCOOL Quality: Known for reliable, durable, and high-performance ductless HVAC solutions.
Q&A
Q: What is the MRCOOL DIY 5th Gen 6-Zone Mini Split?
A: A 55,000 BTU ductless air conditioner and heat pump system with six ceiling cassette air handlers (18K + 9K + 9K + 9K + 6K + 6K).
Q: How many zones does it support?
A: Six independent zones for tailored heating and cooling in multiple rooms.
Q: What are the key features?
A: DIY-friendly installation, energy-efficient DC inverter technology, quiet operation, and individual zone controls.
Q: Is it energy efficient?
A: Yes, it features high-efficiency inverter compressors for cost-effective, year-round comfort.
Q: Where is it best used?
A: Perfect for large homes, multi-room offices, or spaces requiring flexible, zone-specific HVAC solutions.
Maintenance Tips
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Clean or replace air filters in each indoor cassette regularly for optimal airflow and efficiency.
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Inspect and clean condenser coils on the outdoor unit to remove dust and debris.
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Keep the outdoor condenser area clear of plants, leaves, or other obstructions.
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Check refrigerant lines and insulation periodically for leaks or damage.
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Inspect ceiling cassette drain lines to prevent clogs and water issues.
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Test thermostats and zone controls seasonally for proper operation.
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Schedule annual professional servicing to maintain system efficiency and longevity.
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Always disconnect power before performing cleaning or maintenance.
