CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS
CLICK TO CALL US 737-738-6329 FOR ANY QUESTIONS
MRCOOL DIY 5th Gen OuttaSight 18K BTU Ceiling Cassette | R-454B - DIYCASSETTE18HP-230D25-O
Summary
The 5th Generation MRCOOL® DIY® OuttaSight® 18K BTU Ceiling Cassette delivers powerful, discreet climate control for spaces up to 800 sq. ft. Designed for flush mounting between standard 16" ceiling joists, this ultra-quiet (26-44 dBA) cassette features R-454B refrigerant compatibility and requires no specialized tools for installation. With smart controls (including app, voice, and remote operation), advanced filtration, and industry-leading warranties (including Limited Lifetime Compressor warranty with registration), this high-capacity solution combines aesthetic discretion with premium performance.
Important
Professional installation NOT required - designed for DIY. Registration required for Limited Lifetime Compressor warranty. Compatible with MRCOOL DIY 5th Gen systems. Quick Connect® line sets required (sold separately) - pre-charged with R-454B refrigerant.
What's Included
- 18,000 BTU Ceiling Cassette Unit (Model DIYCASSETTE18HP-230D25-O)
- Wireless Remote Control
- Installation Manual
- User's Manual
- Warranty Information
Key Features
- Low-Profile Design - Fits between standard 16" ceiling joists
- High Capacity - 18,800 BTU cooling/22,700 BTU heating
- True DIY Installation - No HVAC technician or specialized tools required
- Ultra-Quiet Operation - As low as 26 dBA in quiet mode
- Smart Controls - Works with Smart HVAC app, Amazon Alexa & Google Home
- Advanced Filtration - Improves indoor air quality
- Easy Maintenance - Elevation function lowers panel for filter access
- R-454B Refrigerant - More efficient and eco-friendly formula
- Multi-Directional Airflow - Optimized comfort distribution
- Flexible Installation - Works with single or multi-zone systems
Complete Technical Specifications
| SKU | DIYCASSETTE18HP-230D25-O |
| UPC | 840255587525 |
| GTIN | 00840255587525 |
| Cooling Capacity | 18,800 BTU |
| Heating Capacity | 22,700 BTU |
| Coverage Area | Up to 800 sq. ft. |
| Refrigerant | R-454B |
| Electrical | 208-230V 1 Phase 60 Hz |
| Electrical Details | 3A Min Circuit Ampacity, 15A Max Fuse Breaker |
| Mount Type | Ceiling (between 16" joists) |
| Air Flow Direction | 1-Way |
| Noise Level | 26-44 dBA |
| Line Set Connections | 1/4" Liquid Line, 1/2" Suction Line |
| CFM Settings | 400 / 352 / 300 / 207 / 207 |
| Blower Motor RPM | 1344/1184/1024 |
| Filter Type | Reusable |
| 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 | Smart HVAC 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 |
| Construction | Low-profile ceiling cassette design |
Warranty Information
- Limited Lifetime Compressor Warranty - With enrollment in MRCOOL® Care Program
- 7 Year Compressor Warranty (base)
- 5 Year Parts Warranty
- Registration required within 60 days of installation
Manuals & Documentation
- Product Brochure
- Installation & Owner's Manual
- Remote Control Manual
- Smart Kit Manual
- Warranty Registration
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.
Advanced Technology
The MRCOOL DIY® 5th Generation OuttaSight® Ceiling Cassette features a two-stage DC motor for ultra-quiet operation and energy efficiency. The innovative low-profile design fits seamlessly between standard 16" ceiling joists while delivering powerful 18K BTU capacity. The R-454B refrigerant offers superior performance with lower environmental impact compared to previous refrigerants. With multiple airflow settings (400 to 207 CFM) and precise temperature control, this high-capacity cassette delivers customized comfort without compromising aesthetics.
Smart Home Integration
Control your climate from anywhere with the Smart HVAC app for iOS and Android devices. Create custom schedules, monitor operation, and adjust settings remotely. Voice control integration with Amazon Alexa and Google Assistant allows hands-free operation. The included wireless remote features easy-to-use controls with multiple operation modes including Quiet Mode (26 dBA) for undisturbed comfort.
Installation Advantages
The revolutionary OuttaSight® design eliminates bulky ductwork and maintains ceiling aesthetics with its flush-mounted installation. The system works with pre-charged Quick Connect® line sets (sold separately) that require no vacuuming or special tools. The elevation function simplifies maintenance by lowering the front panel for easy filter access. Designed for both new construction and retrofit applications, this high-capacity cassette provides a discreet yet powerful climate control solution for larger spaces.
Loading accessories…
We will prepare your order within 24 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION: Please be kindly informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery. To AVOID delays, please check if the provided phone number in the order details is a current number where you can be reached. You can also contact the carrier directly and refer to your tracking number to set up a date and time for your appointment. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. PLEASE verify your shipping address, as changes to the address after freight has shipped can result in an additional 15% or higher fee depending on freight weight and dimensions.
SMALLWARES INFORMATION: Please be informed that for smaller items, such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves, when these items are ordered individually, they may be shipped via FedEx without a signature requirement. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING: Please inspect your boxes thoroughly when you receive them. They should arrive shrink-wrapped and on a pallet. If you notice any damages or imperfections (e.g. crushed box or forklift hole), please write comments on the receipt before signing for delivery, no matter how small damages seem. Contact us immediately to assist you.
Shipping & Delivery
We will prepare your order within 24–48 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION
Please be informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery.
To AVOID delays, please make sure the phone number in your order details is accurate and one where you can be reached. You may also contact the carrier directly using your tracking number to schedule your delivery.
It is your responsibility to ensure a safe and secure delivery environment. We are not liable for any packages that are stolen or lost after delivery is confirmed.
Please verify your shipping address carefully. Changes to your shipping address after the freight has been shipped may result in additional fees of 15% or more, depending on freight weight and dimensions.
SMALLWARES INFORMATION
Smaller items such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves may be shipped via FedEx without a signature requirement if ordered individually.
It is your responsibility to ensure a safe delivery location. We are not liable for packages lost or stolen after delivery confirmation. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING
Please inspect your boxes carefully upon delivery. Shipments should arrive shrink-wrapped and on a pallet. If you notice any damage or signs of mishandling (such as a crushed box or forklift puncture), write comments on the delivery receipt before signing, even if the damage appears minor.
Contact us immediately if any issues arise so we can assist you promptly.
SMS Delivery Notifications
If you opted into SMS notifications, we may send you order updates or delivery reminders by text message. Message frequency may vary. Message and data rates may apply. Text STOP to opt out. Text HELP for assistance.
For more details, see our Privacy Policy.
Loading technical data…
