MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 12K + 12K + 12K + 6K + 6K Ceiling Cassette Air Handlers - DIY5-6ZC-55HP-18K12K12K12K6K6K
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 12K and two 6K ceiling cassette air handlers.
Features
-
Customize mini-split system: choose the perfect line set length for each zone just above the “Add to Cart” button.
-
Ultra-Efficient Cooling & Heating: Enjoy up to 22 SEER2 and 10.6 HSPF2-4 for energy-efficient year-round comfort.
-
Low-Profile Ceiling Cassette Design: Flush-mounted unit fits between standard ceiling joists for a clean, built-in look.
-
DIY-Friendly QuickConnect® Installation: No vacuuming or professional tools needed — pre-charged line sets make setup fast and simple.
-
Smart Voice & App Control: Full control via SmartHVAC app, Alexa, Google Assistant, or included wireless remote.
-
Eco-Conscious Refrigerant: Uses R-454B refrigerant with a low environmental impact.
-
Industry-Leading Warranty: Includes 5-year parts, 7-year compressor, and lifetime replacement with MRCOOL® Care registration.
What our Experts Think
-
Tailored Multi-Zone Comfort: Six-zone system allows independent temperature control for rooms of varying sizes.
-
High-Capacity 55,000 BTU: Efficiently heats and cools large residential or light commercial spaces.
-
Ceiling Cassette Air Handlers: Sleek, low-profile design integrates into ceilings for even, unobtrusive airflow.
-
DIY-Friendly Installation: 5th Gen MRCOOL system simplifies setup without the need for professional HVAC installation.
-
Energy Efficient Operation: Optimized for lower energy consumption while maintaining consistent indoor comfort.
-
Reliable Performance: MRCOOL is a trusted brand known for durable, user-friendly, 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 + 12K + 12K + 12K + 6K + 6K).
Q: How many zones does it support?
A: Six independent zones for customized heating and cooling in different rooms.
Q: What are the key features?
A: DIY-friendly installation, energy-efficient DC inverter technology, quiet operation, and individual zone control.
Q: Is it energy efficient?
A: Yes, it uses high-efficiency inverter compressors for cost-effective, year-round comfort.
Q: Where is it best used?
A: Ideal for large homes, multi-room offices, or spaces needing flexible, zone-specific HVAC solutions.
Maintenance Tips
-
Clean or replace air filters in each indoor cassette regularly to maintain optimal airflow.
-
Inspect and clean outdoor condenser coils to prevent dust and debris buildup.
-
Keep the outdoor unit area clear of obstructions for proper ventilation.
-
Check refrigerant lines and insulation periodically for leaks or damage.
-
Inspect ceiling cassette drain lines to prevent clogs and water issues.
-
Test thermostats and zone controls seasonally for accurate performance.
-
Schedule annual professional servicing to maintain efficiency and longevity.
-
Always disconnect power before performing cleaning or maintenance.
