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The MRCOOL DIY 5th Gen Multi‑Zone 18,000 BTU Ductless Mini Split Air Conditioner & Heat Pump System 2‑Zone DIYM218HPW02D00 delivers powerful zoned comfort to two interior spaces with the simplicity of homeowner installation. This complete system combines an 18,000 BTU outdoor condenser with two indoor wall‑mounted air handlers — a 6,000 BTU unit for smaller rooms and a 12,000 BTU unit for larger areas — offering balanced, customizable heating and cooling throughout your home.
Installation is made accessible to DIY installers thanks to the included two 16 ft pre‑charged QuickConnect® line sets, which eliminate the need for vacuum pumps, refrigerant gauges, or professional HVAC tools. This helps reduce installation time and cost while still providing a professional‑grade climate control solution. The system uses eco‑friendly R‑454B refrigerant, supporting modern environmental standards without sacrificing performance.
Each indoor unit operates independently, allowing you to set different temperatures in each zone to match your comfort preferences. The advanced DC inverter compressor provides smooth and energy‑efficient performance across both cooling and heating seasons. Quiet operation and intuitive controls — including wireless remotes and smart control capability — make this system easy to use and manage.
Built for durability, the outdoor condenser features corrosion‑resistant construction for long‑lasting performance in varied conditions. With robust manufacturer warranty coverage, this MRCOOL DIY® 2‑Zone mini split system combines flexible zoned comfort, energy efficiency, and homeowner‑friendly installation.
Multi‑zone ductless HVAC system with two independently controlled zones
Includes (1) 6,000 BTU and (1) 12,000 BTU wall‑mounted indoor air handlers
DIY‑friendly installation using pre‑charged QuickConnect® line sets
Includes two 16 ft pre‑charged line sets for flexible installation
Uses R‑454B refrigerant, an environmentally improved option
Efficient and quiet operation with advanced DC inverter compressor
Wireless remote controls for each indoor unit
Smart control capable — remote app and voice assistant support
Corrosion‑resistant outdoor unit construction
Ideal for medium‑sized homes with zoned HVAC needs
| System Type | Ductless Mini Split Air Conditioner & Heat Pump |
|---|---|
| Zones | 2 |
| Capacity | Total: 18,000 BTUZone 1: 6,000 BTUZone 2: 12,000 BTU |
| Coverage Area | Total: 650 sq. ft.Zone 1: 200 sq. ft.Zone 2: 550 sq. ft. |
| Refrigerant | R-454B |
| Line Sets Included | 2 x 16ft Pre-Charged Line Sets |
| Warranty | 7 Years Compressor5 Years Parts |
| INDOOR UNIT (6K) x 1 | |
|---|---|
| Model | DIY-06-HP-WMAH-230D25-O |
| Dimensions | 31.57\" W x 7.44\" D x 11.69\" H |
| Mounting Type | Wall |
| Cooling Capacity | 6,000 BTU |
| Heating Capacity | 6,000 BTU |
| Coverage Area | 100 to 200 sq. ft. |
| Liquid Line Size | 1/4\" |
| Suction Line Size | 3/8\" |
| Modes | Auto Mode: Automatically selects heating or cooling based on the room\'s temperature.Cool Mode: Lowers the room temperature to your desired setting.Heat Mode: Raises the room temperature to your desired setting.Fan-Only Mode: Circulates air without heating or cooling.Dry Mode (Dehumidification): Reduces humidity levels in the room.Sleep Mode: Gradually adjusts temperature settings for comfortable sleep and energy savings. |
| Weight | 24.47 lbs |
| INDOOR UNIT (12K) x 1 | |
|---|---|
| Model | DIY-12-HP-WMAH-230D25-O |
| Dimensions | 31.57\" W x 7.44\" D x 11.69\" H |
| Mounting Type | Wall |
| Cooling Capacity | 12,000 BTU |
| Heating Capacity | 12,000 BTU |
| Coverage Area | 351 to 550 sq. ft. |
| Liquid Line Size | 1/4\" |
| Suction Line Size | 3/8\" |
| Modes | Auto Mode: Automatically selects heating or cooling based on the room\'s temperature.Cool Mode: Lowers the room temperature to your desired setting.Heat Mode: Raises the room temperature to your desired setting.Fan-Only Mode: Circulates air without heating or cooling.Dry Mode (Dehumidification): Reduces humidity levels in the room.Sleep Mode: Gradually adjusts temperature settings for comfortable sleep and energy savings. |
| Weight | 24.47 lbs |
| OUTDOOR UNIT (18K) x 1 | |
|---|---|
| Model | DIY-MULTI3-18HP230D-O |
| Dimensions | 35.04\" W x 13.46\" D x 26.50\" H |
| Cooling Capacity | 18,000 BTU |
| SEER2 | 23.9 |
| EER2 | 13.0 |
| Heating Capacity | 18,000 BTU |
| HSPF2-4 | 10.0 |
| HSPF2-5 | 7.8 |
| Outdoor Noise Level | 60.0 dB(A) |
| Outdoor Operating Temperature | Cooling: -13°F – 122°FHeating: -13°F – 75°F |
| Voltage | 208–230V |
| Phase | 1 |
| Cycle | 60Hz |
| Min Circuit Ampacity | 16.0A |
| Max Fuse Breaker | 20.0A |
| Weight | 101.63 lbs |
| Certifications | ENERGY STAR CertifiedAHRI CertifiedUL ListedETL Listed |
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