MRCOOL DIY® 5th Gen OuttaSight® 12K BTU Ceiling Cassette | R-454B - DIYCASSETTE12HP-230D25-O
MRCOOL DIY® 5th Gen OuttaSight® 12K BTU Ceiling Cassette | R-454B - DIYCASSETTE12HP-230D25-O
Summary
The 5th Generation MRCOOL® DIY® OuttaSight® 12K BTU Ceiling Cassette delivers powerful, discreet climate control for spaces up to 550 sq. ft. Featuring the same innovative low-profile design (only 8.98" height) as its 6K counterpart but with increased capacity, this ultra-quiet (24-41 dBA) cassette features R-454B compatibility, advanced filtration, and smart controls via app or voice commands. With its flush-mount design for standard 16" joist spacing and simplified DIY installation (no vacuuming required), this ceiling cassette combines high performance with space-saving elegance.
Important
Designed for DIY installation between standard 16" ceiling joists. Requires compatible MRCOOL DIY condenser and Quick Connect® line set (sold separately). Registration required for Limited Lifetime Compressor warranty. Not available in Guam, Puerto Rico, or Virgin Islands.
What's Included
- 12K BTU Ceiling Cassette (Model DIYCASSETTE12HP-230D25-O)
- Wireless Remote Control
- Installation Hardware
- Installation Manual
- User's Manual
- Warranty Information
Key Features
- High-Capacity 12K BTU - Covers up to 550 sq. ft.
- True DIY Installation - No specialized tools or HVAC technician required
- Low-Profile Design - Fits between 16" ceiling joists (only 8.98" height)
- Ultra-Quiet Operation - 24-41 dBA range (37 dBA rated)
- Smart Controls - Works with SmartHVAC app, Alexa & Google Assistant
- Advanced Filtration - Improves indoor air quality
- Elevation Function - Lowers panel for easy filter access
- Two-Stage DC Motor - Variable-speed operation (797-1075 RPM)
- R-454B Refrigerant Compatible - Eco-friendly and efficient
- Five-Speed Airflow - 177 to 353 CFM
Complete Technical Specifications
| SKU | DIYCASSETTE12HP-230D25-O |
| UPC | 840255587518 |
| Cooling Capacity | 12,000 BTU |
| Coverage Area | Up to 550 sq. ft. |
| Refrigerant | R-454B (compatible) |
| Electrical | 208-230V 1 Phase 60 Hz |
| Electrical Details | 3A Min Circuit Ampacity, 15A Max Fuse Breaker |
| Noise Level | 24-41 dBA (37 dBA rated) |
| Airflow (CFM) | 177 / 247 / 283 / 312 / 353 (5 speeds) |
| Blower Motor | Two-Stage DC (797-1075 RPM) |
| Line Connections | 1/4" Liquid Line, 3/8" Suction Line |
| Net Dimensions (HxWxD) | 8.98" x 50.31" x 13.19" |
| Net Weight | 45 lbs |
| Shipping Dimensions | 22.64" x 57.6" x 22.48" |
| Shipping Weight | 88 lbs |
Performance Features
| Smart Controls | SmartHVAC App, Alexa, Google Home, Wireless Remote |
| Operation Modes | Cool, Heat, Fan, Dry, Auto |
| Special Features | Quiet Mode, Sleep Mode, Auto Cool, Fan Only Option |
| Connectivity | WiFi, iOS & Android Compatible |
| Installation | Fits standard 16" joist spacing (including I-joists) |
Warranty Information
- Limited Lifetime Compressor Warranty - With product registration
- 7 Year Compressor Warranty - Base coverage
- 5 Year Parts Warranty
- Registration required within 60 days of installation
Manuals & Downloads
Safety Information
PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
High-Capacity Ceiling Cassette Design
The OuttaSight® 12K BTU ceiling cassette maintains the same revolutionary 8.98" low profile as its 6K counterpart while delivering double the coverage capacity (550 sq. ft.). The unit's innovative design fits perfectly between standard 16" ceiling joists, including pre-manufactured I-joists, maintaining a clean, flush appearance while delivering powerful climate control. The Elevation function allows the front panel to lower for effortless filter access and maintenance. With five-speed airflow (177-353 CFM) and precise temperature control, this high-capacity cassette provides customized comfort without compromising ceiling aesthetics.
Smart Control & Ultra-Quiet Performance
Control your 12K BTU cassette through multiple options: the included wireless remote, SmartHVAC app for iOS/Android devices, or voice commands via Amazon Alexa/Google Assistant. The two-stage DC motor operates at whisper-quiet levels as low as 24 dBA - quieter than most conversation. Special modes include Sleep Mode for nighttime comfort, Quiet Mode for minimal sound output (24 dBA), and Auto Cool for automatic temperature maintenance. The advanced filtration system captures airborne particles while remaining easily accessible for cleaning via the lowering front panel.
Simplified DIY Installation
Designed specifically for homeowner installation, this 12K ceiling cassette works with MRCOOL's revolutionary Quick Connect® line sets (sold separately) that eliminate the need for vacuuming or refrigerant handling. The compact design fits in spaces where traditional cassettes cannot, including areas with pre-manufactured I-joists. Electrical connection is simplified with standard 208-230V wiring (3A min circuit ampacity). The complete DIY system can be installed without special tools or HVAC expertise, saving significant installation costs while delivering professional-grade performance at 12,000 BTU capacity.
