MRCOOL DIY 5th Gen Mini Split - 5-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 9K + 9K + 9K + 6K Ceiling Cassette Air Handlers

MRCOOL DIY 5th Gen Mini Split - 5-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 9K + 9K + 9K + 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 5-Zone system includes one 18K, three 9K and one 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

• Powerful Multi-Zone Cooling & Heating: Efficiently manages up to 5 zones with a total of 55,000 BTU, perfect for large homes or offices.

• DIY-Friendly Installation: Designed for easy, professional-level installation without costly contractors, saving time and money.

• Energy Efficient: Advanced inverter technology reduces energy consumption while maintaining consistent comfort.

• Quiet Operation: Ceiling cassette air handlers ensure discreet, noise-free airflow in every zone.

• Smart Control: Compatible with smart thermostats and apps for convenient, remote temperature management.

• Reliable Brand: MRCOOL is trusted for quality HVAC solutions with solid warranty support and customer service.

Q&A

Q: What is the MRCOOL DIY 5th Gen Mini Split system?
A: A 5-zone, 55,000 BTU ductless air conditioner and heat pump with ceiling cassette air handlers for efficient multi-zone heating and cooling.

Q: What are the zone sizes?
A: Zones include 18K, 9K, 9K, 9K, and 6K BTU ceiling cassette air handlers for tailored climate control.

Q: Is this system DIY-friendly?
A: Yes, designed for easy installation without specialized HVAC tools.

Q: Does it provide both heating and cooling?
A: Yes, it’s a heat pump system that offers year-round heating and cooling.

Q: How does it save energy?
A: Zoned operation and high SEER ratings optimize energy efficiency and lower utility bills.

Q: What spaces are best suited for this system?
A: Ideal for multi-room homes, offices, or spaces needing flexible, zone-specific comfort.

Q: Are ceiling cassette units included?
A: Yes, five ceiling cassette air handlers are included for discreet, space-saving installation.

Maintenance Tips

• Clean or replace air filters every 1-3 months.

• Keep the outdoor condenser clear of dirt and debris.

• Schedule annual professional inspections for refrigerant and system performance.

• Regularly clear condensate drain lines to prevent clogs.

• Maintain unobstructed airflow around ceiling cassette air handlers.

• Avoid covering or blocking air handlers.

• Use the system regularly to ensure optimal efficiency.