MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 9K + 6K + 6K + 6K + 6K Ceiling Cassette Air Handlers

MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 9K + 6K + 6K + 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, one 9K and four 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

• Balanced Multi-Zone Comfort – 55,000 BTU condenser with 12K, 9K, and 6K cassettes provides efficient heating and cooling for varied room sizes.

• DIY-Friendly Installation – Pre-charged No-Vac line sets make setup fast and simple without requiring special tools.

• Discreet Ceiling Design – OuttaSight cassettes deliver quiet, even airflow while preserving wall and floor space.

• Energy-Efficient Year-Round Use – Inverter heat pump technology ensures reliable cooling in summer and efficient heating in winter.

• Independent Zone Control – Each cassette operates individually, allowing precise comfort and energy savings per room.

Q&A

Q: Can each room be controlled separately?
A: Yes, each cassette has its own thermostat for independent zoning.

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

Q: Is it DIY-friendly?
A: Yes, the No-Vac pre-charged line sets simplify installation without specialized tools or vacuum pumps.

Q: Who is this setup ideal for?
A: Homeowners with medium and small rooms needing flexible, zone-specific comfort.

Maintenance Tips

• Clean or replace air filters in each cassette every 1–2 months to maintain optimal airflow.

• Wipe cassette panels and vents regularly to reduce dust buildup.

• Inspect all condensate drain lines to prevent clogs and water leaks.

• Verify pre-charged line set connections are tight and leak-free.

• Keep the outdoor condenser clear of debris, leaves, and obstructions.

• Test remote and smart controls in all zones to ensure proper operation.

• Schedule annual professional servicing to maintain system efficiency and extend lifespan.