MRCOOL DIY 5th Gen Mini Split - 6-Zone 48,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 9K + 9K + 9K + 6K + 6K Ceiling Cassette Air Handlers
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 6-Zone system includes one 12K, 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 21.8 SEER2 and 10 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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Balanced Multi-Room Comfort – 48,000 BTU condenser with 12K, 9K, and 6K cassettes delivers tailored heating and cooling for rooms of different sizes.
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DIY-Friendly Installation – Pre-charged No-Vac line sets make setup quick and easy without special tools.
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Discreet Ceiling Design – OuttaSight cassettes provide quiet, even airflow while keeping walls and floors free.
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Efficient Year-Round Performance – Inverter heat pump ensures reliable cooling in summer and energy-efficient heating in winter.
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Independent Zone Control – Each cassette operates separately, giving precise comfort and energy savings per room.
Q&A
Q: What area can this system cover?
A: Up to 2,700 sq. ft., depending on insulation and layout.
Q: Can each room be controlled independently?
A: Yes, each cassette has its own thermostat for zone-specific comfort.
Q: Is it suitable for heating and cooling?
A: Yes, it’s a heat pump system for year-round climate control.
Q: Why is this system DIY-friendly?
A: No-Vac pre-charged line sets simplify installation without specialized HVAC tools.
Q: Who is this system ideal for?
A: Homeowners with rooms of varying sizes needing energy-efficient, zone-specific comfort.
Maintenance Tips
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Clean or replace air filters in each cassette every 1–2 months to maintain optimal airflow.
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Wipe cassette panels and vents regularly to prevent dust buildup.
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Inspect all condensate drain lines to avoid clogs and water leaks.
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Ensure pre-charged line set connections are secure and leak-free.
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Keep the outdoor condenser clear of debris, leaves, and obstructions.
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Test remote and smart control functions across all six zones for proper operation.
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Schedule annual professional maintenance to maximize efficiency and extend system lifespan.
