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MRCOOL 18,000 BTU 5th Gen DIY Multi-Zone Wall Mounted Air Handler | R-454B - DIY-18-HP-WMAH-230D25-O
Summary
The 5th Generation MRCOOL® DIY® 18K BTU Ductless Mini-Split Heat Pump is a powerful solution for heating and cooling spaces up to 800 sq. ft. Designed for true DIY installation, this system eliminates the need for professional help, featuring a pre-charged 25-foot DIY® QuickConnect® line set (sold separately) with R-454B refrigerant that removes vacuuming requirements. With wireless remote, SmartHVAC app, and voice control via Alexa/Google Assistant, this system offers year-round comfort with innovative features like Follow Me function and Dry Mode.
Important
Designed for easy DIY installation without professional help. Registration recommended to activate extended limited lifetime warranty. Requires compatible condenser and line set (sold separately) for proper operation.
What's Included
- 18,000 BTU Wall Mounted Air Handler (Model DIY-18-HP-WMAH-230D25-O)
- Wireless Remote Control
- DIYPRO® Cable
- Installation Manual
- User's Manual
- Manufacturer Warranty Information
Features
- True DIY installation - no specialized tools or HVAC technician required
- WiFi control via SmartHVAC app (iOS/Android), Google Home, or Alexa
- Follow Me® function tracks remote location for optimal comfort
- Dry Mode for humidity control
- Gold Fin® Condenser for superior corrosion resistance
- Pre-charged QuickConnect® line set compatible (sold separately)
- Quiet operation mode available
- Energy Star Certified for energy efficiency
- AHRI Certified for performance standards
Technical Specifications
| SKU | DIY-18-HP-WMAH-230D25-O |
| UPC | 840255587044 |
| Weight | 35.49 lbs |
| Cooling BTU | 18,000 BTU |
| Heating BTU | 18,000 BTU |
| Maximum Coverage | 800 sq. ft. |
| Refrigerant | R-454B |
| Electrical | 208/230V 1 Phase 60 Hz |
| Dimensions (HxWxD) | 13.19" x 42.52" x 8.9" |
Performance Data
| SEER Rating | High Efficiency |
| Heating Type | Heat Pump |
| Noise Level | 19-54.5 dB |
Warranty
- Extended Limited Lifetime warranty with registration
- 7 year compressor warranty
- 5 year parts warranty
Manuals & Downloads
Safety Information
PROPOSITION 65 WARNING
Smart Control & Convenience
The MRCOOL DIY® 18K system offers multiple control options including the included wireless remote with LCD display, SmartHVAC app for iOS and Android devices, and voice commands through Amazon Alexa and Google Assistant. The innovative Follow Me® function enhances comfort by adjusting airflow based on the remote's location, ensuring even temperature distribution throughout your 800 sq. ft. space.
DIY Installation Advantages
This 5th Generation MRCOOL DIY® system features simplified installation with the DIYPRO® cable that eliminates the need for electrical conduit. The compatible pre-charged QuickConnect® line set (sold separately) with R-454B refrigerant removes the vacuuming requirement, making professional installation unnecessary. The Gold Fin® condenser provides exceptional corrosion resistance, ideal for coastal environments and ensuring long-term durability.
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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
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