MRCOOL DIY 5th Gen Mini Split - 5-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 12K + 12K + 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 + 12K + 12K + 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, two 12K, one 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

• Efficient Multi-Zone Cooling & Heating

  • Supports 5 zones with a total of 55,000 BTU, ideal for whole-home climate control.

  • Precise temperature management in individual rooms improves energy savings.

• User-Friendly DIY Installation

  • Designed for easy, do-it-yourself setup without professional help.

  • Reduces installation costs and downtime.

• Advanced Ceiling Cassette Air Handlers

  • Five ceiling-mounted units ensure even airflow distribution.

  • Sleek design blends seamlessly with modern interiors.

• Reliable Heat Pump Performance

  • Provides both heating and cooling, extending comfort year-round.

  • High SEER and HSPF ratings deliver excellent energy efficiency.

• Smart Controls & Quiet Operation

  • Compatible with smart thermostats and remote controls.

  • Operates quietly, maintaining comfort without noise disruption.

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 system with ceiling cassette air handlers for efficient heating and cooling.

Q: How many zones does it support?
A: Five zones with individual ceiling cassette air handlers sized 18K, 12K, 12K, 9K, and 6K BTU.

Q: Is installation DIY-friendly?
A: Yes, designed for easy do-it-yourself installation with no specialized HVAC tools required.

Q: What type of climate control does it offer?
A: Provides both cooling and heating via a heat pump for year-round comfort.

Q: What are the energy efficiency benefits?
A: High SEER ratings and zoned control help reduce energy use and lower utility bills.

Q: What spaces is it ideal for?
A: Perfect for multi-room homes, offices, or spaces needing customizable climate control.

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

Maintenance Tips

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

• Keep outdoor condenser unit free of debris and dust.

• Schedule annual professional inspections for refrigerant and system check.

• Clear drainage lines regularly to prevent clogs.

• Ensure proper airflow around indoor and outdoor units.

• Avoid blocking ceiling cassette air handlers.

• Use the system regularly to maintain efficiency.