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Give your home and family the year-round comfort they deserve with the 12k BTU MRCOOL DIY Ductless Wall Mounted Air Handler - 5th Generation 120v. Designed for convenient installation and superior performance, this unit is ideal for homeowners seeking efficient climate control without relying on costly professional help. With UL listing and AHRI certification, this MRCOOL Air Handler is thoroughly tested to ensure long-lasting reliability and performance.
The MRCOOL DIY series allows you to take installation into your own hands. This unit is fully compatible with MRCOOL’s patented pre-charged line sets, removing the need for vacuuming or special tools. With detailed instructions and simple quick-connect fittings, you’ll be able to get your system running quickly—without scheduling an installer. Whether you're a seasoned DIYer or just ready to skip the wait and extra expense, this wall-mounted air handler makes the process easier than ever.
Built with high-efficiency technology and premium components, this air handler ensures precise temperature control through its variable speed blower and horizontal airflow design. Use the MRCOOL app or the Follow Me function via the remote to adjust temperatures based on your immediate environment. Features like louver position memory and auto-restart after power loss mean your comfort settings stay just the way you want them, even during interruptions.
Specifications
| Model | DIY-12-HP-WMAH-115D25-O |
| UPC | 840255587006 |
| Product Height (in) | 11.69 |
| Product Length (in) | 7.44 |
| Product Width (in) | 31.57 |
| Configuration | Wall Mounted |
| Air Flow Direction | Horizontal |
| Blower Motor | Variable Speed |
| Cooling Capacity | 1 Ton |
| Electrical Phase | 1-Phase |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Suction Line Size | 3/8 inch |
| Max Overcurrent Protection | 20 amps |
| Weight (lbs) | 37.7 |
| Refrigerant | R-454b |
| Series | DIY |
| System Application Type | Ductless Split Systems |
| Voltage | 120 |
| Warranty | 5 Year Parts, 7 Year Compressor |
Resources
- DIY5 Quick Start Guide (PDF)
- DIY5 Single Zone Customer Brochure (PDF)
- DIY5 Single Zone Installation Manual (PDF)
- DIY5 Warranty Sheet (PDF)
- Mini-Split Remote Control Owner's Manual (PDF)
What's Included
- MRCOOL DIY-12-HP-WMAH-115D25-O
- Owner Manual
- Lifetime Tech Support
Warranty
- 5-Year Parts Warranty
- 7-Year Compressor Warranty
- Lifetime Warranty available upon registration