MRCOOL
MRCOOL 18k DIY 5th Generation Mini-split Air Handler 230v
DIY-18-HP-WMAH-230D25-O
18,000 BTU · 208/230V
Part of DIY 5th Gen – Air Handlers
- Cooling capacity
- 18,000 BTU1.5 tons
- Room size
- 800 sq ft
- Power
- 208/230V15A breaker
- Install
- DIYPre-charged, no vacuum
$931.00 each
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
The 5th Generation MRCOOL® DIY® 18k BTU Ductless Heat Pump Single Zone Mini-Split Air Handler delivers powerful, energy-efficient heating and cooling for spaces up to 800 sq. ft. Designed for easy, tool-free installation, this system requires no professional experience, specialized tools, or costly service calls—making it a fast and affordable comfort solution for homeowners. This model features the rugged DIYPRO® cable, which eliminates the need for traditional electrical conduit while offering added durability and protection against outdoor elements, animals, and harsh weather conditions. Installation is not only simplified but also built to last. You can manage your comfort your way. Use the included wireless remote, connect through the SmartHVAC app available on iOS and Android devices, or control the system using voice commands via Amazon Alexa and Google Assistant. The Gold Fin® condenser coating enhances corrosion resistance, making the unit a great fit for coastal or high-humidity areas. The system also includes advanced comfort features. Follow Me® technology senses the temperature around the remote and adjusts airflow accordingly, ensuring consistent comfort where you are. Dry Mode reduces humidity for better air quality and comfort. To protect your investment, MRCOOL® offers a strong 7-year compressor and 5-year parts warranty, and is also eligible for the MRCOOL® Care Program. Experience hassle-free installation, advanced features, and reliable year-round comfort with the MRCOOL® DIY® 18k Mini-Split Air Handler.
- 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 | 18,000 BTU |
| Nominal size | 1.5 tons |
| Coverage | 800 sqft |
| Sound level | 19–54.5 dBA |
| Voltage | 208/230V |
|---|---|
| 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 | 1/2" |
| Installation | DIY — pre-charged quick-connect line set, no vacuum pump needed |
| Indoor unit / mounting | Wall |
|---|---|
| Dimensions (in) | 42.52 W × 8.9 D × 13.19 H |
| Weight | 35.49 lb |
| Shipping weight | 49.6 lb |
| Color | White |
| ENERGY STAR | Yes |
|---|---|
| AHRI certified | Yes |
| Safety listing | UL, ETL |
| Compressor warranty | 7 years |
| Parts warranty | 5 years |
| UPC | 840255587044 |

