Take control of your home's comfort with the MRCOOL® DIY® 5th Generation 18,000 BTU Multi-Zone Ductless Mini Split Condenser, available from Skyway AC Sales. Designed for homeowners who want professional-level performance with a simple installation process, this advanced DIY mini split heat pump system delivers reliable heating and cooling while helping reduce energy costs year-round.
Built for flexibility, this 18,000 BTU multi-zone condenser can support up to three compatible indoor air handlers, making it an excellent solution for conditioning multiple rooms throughout your home. Whether you're upgrading a home office, spare bedroom, garage conversion, or small apartment, this system can effectively heat and cool spaces up to approximately 750 square feet.
Engineered for efficiency, the MRCOOL DIY 5th Gen system boasts an impressive 23.9 SEER2 rating and 10 HSPF2-4 rating, helping homeowners maximize comfort while minimizing energy consumption. At the heart of the system is MRCOOL's patented Quick Connect® line set technology, pre-charged with environmentally friendly R-454B refrigerant for faster installation, lower environmental impact, and long-term performance.
One of the biggest advantages of the MRCOOL DIY series is that it was specifically designed for true do-it-yourself installation. The pre-charged line set eliminates the need for specialized HVAC tools, vacuum pumps, or professional refrigerant handling, making it one of the most homeowner-friendly ductless mini split systems available today.
Future-proof your installation with the included DIYPro® cable, which eliminates the need for electrical conduit while providing a cleaner, more durable installation. This innovative feature helps save time during setup and offers added protection for your system.
Stay connected to your comfort from anywhere with built-in smart home compatibility. The included MRCOOL® Smart HVAC Controller® Module allows you to control your system through the SmartHVAC® App, Amazon Alexa, and Google Assistant right out of the box. Adjust temperatures, create schedules, monitor performance, and manage your home's climate from your smartphone or with simple voice commands.
For personalized comfort, the included remote control features Follow Me® technology, which detects the temperature around the remote rather than the indoor unit. This allows the system to adjust operation based on your location, helping maintain a more comfortable environment wherever you are in the room.
Key Features & Benefits
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18,000 BTU Multi-Zone Condenser supports up to three compatible indoor air handlers
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Conditions spaces up to approximately 750 square feet
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High-efficiency performance with up to 23.9 SEER2 and 10 HSPF2-4
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Intertek Listed (Certification #5031495) for safety and quality assurance
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Designed for easy DIY installation
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Patented Quick Connect® pre-charged line set technology
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Environmentally friendly R-454B refrigerant
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Included DIYPro® cable eliminates the need for electrical conduit
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Built-in SmartHVAC® App, Amazon Alexa, and Google Assistant compatibility
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Follow Me® technology for personalized temperature control
- Energy-efficient heating and cooling for year-round comfort
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Eligible for the MRCOOL® Care Program
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Backed by a 7-Year Compressor Warranty and 5-Year Parts Warranty
If you're looking for an energy-efficient, easy-to-install multi-zone ductless mini split heat pump system, the MRCOOL® DIY® 5th Generation 18K BTU Condenser delivers the perfect combination of performance, convenience, smart technology, and long-term value. At Skyway AC Sales, we're committed to helping homeowners find the right HVAC solution for dependable comfort in every season.
Specifications
| System Type |
Ductless Mini Split Air Conditioner & Heat Pump |
| Zones |
2 |
| Capacity |
Total: 12,000 BTU
Zone 1: 6,000 BTU
Zone 2: 6,000 BTU |
| Coverage Area |
Total: 300 sq. ft.
Zone 1: 150 sq. ft.
Zone 2: 150 sq. ft. |
| Refrigerant |
R-454B |
| Line Sets Included |
2 x Pre-Charged Line Sets |
| Warranty |
7 Years Compressor
5 Years Parts |
| 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°F
Heating: -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 Certified
AHRI Certified
UL Listed
ETL Listed |
| INDOOR UNIT (6K) x 2 |
| 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 150 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 |
Information & Guides
Installation Manual
Brochure
Service Manual
Remote Manual
Accessory Manual
Warranty
AHRI Cert
Energy Guide
