MRCOOL DIY 5th Gen Mini Split - 5-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 18K + 9K + 6K + 6K Ceiling Cassette Air Handlers
Take control of your home’s comfort with the MRCOOL5th Gen DIYMulti-Zone Mini Split System — the ultimate solution for efficient, customizable, and true DIY-friendly heating and cooling.
This powerful 55K 5-Zone system includes two 18K, one 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 QuickConnectInstallation: 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 MRCOOLCare registration.
What our Experts Think
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High-capacity 5-zone system: 55,000 BTU total with flexible air handlers for customized room comfort.
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Optimized air handler mix: Two 18K, one 9K, and two 6K ceiling cassette units balance airflow and efficiency.
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DIY-friendly setup: Pre-charged line sets cut installation time and cost.
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Efficient heat pump technology: Reliable heating and cooling year-round, even in colder climates.
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Quiet, unobtrusive design: Ceiling cassettes minimize noise and maintain room aesthetics.
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Trusted durability: MRCOOL warranty offers solid support and peace of mind.
Q&A
Q: What is the MRCOOL DIY 5th Gen Mini Split?
A: A 5-zone, 55,000 BTU ductless air conditioner and heat pump with ceiling cassette air handlers (18K + 18K + 9K + 6K + 6K BTU).
Q: How many zones and capacities does it include?
A: Five zones with air handlers sized at 18,000, 18,000, 9,000, 6,000, and 6,000 BTU for customized comfort.
Q: Is it easy to install myself?
A: Yes, it’s designed for straightforward DIY installation with no professional needed.
Q: What are the main benefits?
A: Zoned heating and cooling, energy efficiency, quiet operation, and flexible climate control.
Q: Which spaces are ideal for this system?
A: Perfect for multi-room homes needing discreet, ceiling-mounted climate control.
Maintenance Tips
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Clean or replace air filters every 1-2 months for optimal airflow.
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Keep the outdoor condenser clear of dirt, leaves, and debris.
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Maintain at least 2 feet of clearance around the outdoor unit.
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Regularly clean indoor ceiling cassette air handlers to reduce dust buildup.
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Schedule annual professional maintenance for refrigerant checks and system tune-up.
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Address unusual noises or performance issues promptly to prevent damage.
Damage 
Loss 
Theft 
