MRCOOL DIY 5th Gen 6-Zone Ductless Mini Split AC & Heat Pump 55000 BTU (6K+6K+6K+6K+6K+6K), One-Way Cassette Units, 230V
A multi-zone heating & cooling system designed for DIY setup, smart control, and a clean ceiling look with one-way cassette air handlers.
Overview
Enjoy room-by-room comfort with low-profile one-way ceiling cassettes that deliver directional airflow and a finished, built-in appearance. Each zone is independently controlled for comfort where you need it—without wasting energy where you don’t.
DIY-MULTI6-55HP230D-O + 6X DIYCASSETTE06HP-230D25-O
DIY-MULTI6-55HP230D-O
43
45
Why Homeowners Love It
- Cleaner look: One-way ceiling cassettes sit flush and keep walls free for furniture, art, and windows.
- DIY-friendly setup: Designed to reduce install complexity and avoid specialized HVAC steps when using DIY Quick Connect line sets.
- Whole-home zoning: Set different temperatures in different rooms for more comfort and less wasted energy.
- Smart control: Manage each zone with app control and voice assistants.
- All-season comfort: Cooling, heating, dry/dehumidify, and auto modes for changing weather.
- Built to last: Gold Fin condenser coating helps resist corrosion in harsh climates.
What’s Included
- (1) Outdoor condenser: DIY-MULTI6-55HP230D-O
- Indoor units (one-way ceiling cassettes):
- 6,000 BTU (x6) — Model: DIYCASSETTE06HP-230D25-O
- Wireless remotes (zone control)
- DIY Quick Connect line sets (installation kit must be selected to be included; DIY Quick Connect line sets are the pre-charged component)
- Manuals & documentation (see Documents & Downloads)
MRCOOL DIY — How It Works
Key Features
- One-way cassette airflow: Directional discharge helps spread comfort across the room with a streamlined ceiling look.
- DIY Quick Connect compatibility: Pre-charged line sets (when included/selected) can eliminate vacuum pump and gauge steps.
- Energy-efficient inverter performance for stable temperatures and lower operating costs.
- Gold Fin condenser for corrosion resistance and durability.
- Quiet comfort: Smooth DC inverter operation with adjustable fan speeds and comfort-focused modes.
- Smart control options: App control + voice assistants + remote control for each zone.
- Low-ambient performance with heating capability down to -13°F.
DIY Quick Connect line sets are model-specific and must match the system. Always follow the installation manual for your exact configuration.
Comfort Modes
- Auto: Automatically selects heating or cooling to maintain setpoint.
- Cool / Heat: Dedicated modes for seasonal comfort.
- Dry: Dehumidifies while maintaining comfort.
- Sleep: Energy-saving overnight profile.
- Timer: Scheduled on/off for efficiency.
Warranty
Coverage commonly includes a 7-year compressor warranty and a 5-year parts warranty (registration requirements apply).
Optional lifetime compressor coverage may be available depending on program/registration.
Indoor Specs
Outdoor Specs
Helpful Notes
Mixing indoor unit types
Many multi-zone configurations allow mixing compatible one-way cassettes with other indoor styles. Confirm compatibility for your condenser model before ordering.
DIY Quick Connect line sets
The “pre-charged” component is the DIY Quick Connect line set (when included/selected). Follow the install manual for required accessories, connections, and any long-line rules.
Electrical & breaker sizing
Use MCA (43) and Max Fuse/Breaker (45) as starting points, then size per the installation manual and local code.
Line sizing
Indoor line sizes: 1/4 / 3/8. Confirm final line sizes and allowable lengths for your exact pairing before selecting a line set.
