MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 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 55K 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 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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Smart Multi-Room Coverage – 55,000 BTU system with 12K, 9K, and 6K cassettes offers the right capacity mix for small to medium rooms.
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DIY Installation – Pre-charged No-Vac line sets make setup simple and fast without specialized tools.
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Discreet Ceiling Comfort – OuttaSight cassettes provide quiet, even airflow while keeping walls and floors free.
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Energy Efficient Heating & Cooling – Inverter heat pump delivers reliable year-round performance with lower energy costs.
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Custom Comfort Per Zone – Independent operation of each cassette allows personalized temperature control and energy savings.
Q&A
Q: Can each room be controlled separately?
A: Yes, every cassette operates with its own thermostat control for true zoning.
Q: Does it provide both heating and cooling?
A: Yes, it’s a heat pump system built for efficient year-round comfort.
Q: What makes it DIY?
A: The pre-charged No-Vac line sets allow installation without professional tools or refrigerant handling.
Q: Who should choose this setup?
A: Homeowners who need flexible comfort across multiple mid-sized and smaller rooms rather than one large space.
Maintenance Tips
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Clean or replace filters in each ceiling cassette every 1–2 months to keep airflow strong.
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Wipe cassette panels and vents to minimize dust buildup.
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Inspect all condensate drain lines regularly to prevent clogs and leaks.
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Check pre-charged line set connections to ensure they remain secure and leak-free.
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Keep the outdoor condenser clear of leaves, dirt, and obstructions.
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Test smart controls and remotes for all zones to confirm reliable operation.
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Schedule annual professional maintenance to sustain efficiency and extend system life.
