MRCOOL
MRCOOL 12k DIY 5th Generation Mini-split Air Handler 115v
DIY-12-HP-WMAH-115D25-O
12,000 BTU · 115V
Part of DIY 5th Gen – Air Handlers
- Cooling capacity
- 12,000 BTU1 ton
- Room size
- 550 sq ft
- Power
- 115V15A breaker
- Install
- DIYPre-charged, no vacuum
$768.00 eachList $778.00
Not sure about the size? Use the BTU sizing calculator, or call us and we'll size it with you. This is a DIY system: the pre-charged line set connects without a vacuum pump or gauges.
Build a multi-zone system with this air handler →
Distributor pricing and stock: call 678-467-5515 or email sales@discountkings.net.
About this product
Transform your space with the 5th Generation MRCOOL® DIY® 12k BTU Ductless Heat Pump Single Zone Mini-Split Air Handler—engineered for easy, tool-free installation and powerful, efficient performance. Perfect for areas up to 550 sq. ft., this system delivers reliable heating and cooling without the need for professional help or specialized skills. Included with the system is the innovative DIYPRO® cable, which boosts protection and simplifies the installation process by eliminating the need for traditional electrical conduit. It provides added durability and safeguards your system from outdoor elements and potential damage caused by animals or weather. Stay in control with multiple user-friendly options. Use the included wireless remote, control your system through the SmartHVAC app available on iOS and Android devices, or operate it hands-free using Amazon Alexa or Google Assistant. The Gold Fin® condenser coating offers advanced corrosion resistance, making this system ideal for coastal and high-humidity locations. Built for personalized comfort, the air handler features Follow Me® technology, which senses the temperature around the remote and adjusts the airflow accordingly. Dry Mode helps manage indoor humidity levels, reducing excess moisture and improving overall comfort in your space. This system is also backed by one of the strongest warranties in the industry—a 7-year compressor warranty and a 5-year parts warranty. This system is also eligible for the MRCOOL® Care Program. Combining simple installation, smart controls, and dependable year-round performance, the 5th Generation MRCOOL® DIY® 12k BTU Air Handler is the ultimate solution for efficient, personalized home comfort.
- NEEP ccASHP Listed
- Intertek listed 5031495
- Easy DIY installation
- Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
- Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
- The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.
Documents & manuals
Specifications
| Type | Air handler (indoor unit) — heat pump (heats & cools) |
|---|---|
| Series | DIY 5th Gen |
| Cooling capacity | 12,000 BTU |
| Nominal size | 1 ton |
| Coverage | 550 sqft |
| Sound level | 18–43 dBA |
| Voltage | 115V |
|---|---|
| Phase | 1-phase |
| Min. circuit ampacity (MCA) | 3 A |
| Max. breaker (MOP) | 15 A |
| Wi-Fi / app control | Yes |
| Liquid line | 1/4" |
|---|---|
| Suction line | 3/8" |
| Installation | DIY — pre-charged quick-connect line set, no vacuum pump needed |
| Indoor unit / mounting | Wall |
|---|---|
| Dimensions (in) | 31.57 W × 7.44 D × 11.69 H |
| Weight | 24.91 lb |
| Shipping weight | 35.49 lb |
| Color | White |
| ENERGY STAR | Yes |
|---|---|
| AHRI certified | Yes |
| Safety listing | UL, ETL |
| Compressor warranty | 7 years |
| Parts warranty | 5 years |
| UPC | 840255587006 |

