Description
Upgrade your home’s comfort and efficiency with the MRCOOL® DIY® 5th Generation 18,000 BTU Mini Split System – a powerful, ENERGY STAR® certified solution designed for true do-it-yourself installation. Ideal for larger areas between 500 and 750 square feet, this single-zone ductless system delivers efficient, whisper-quiet heating and cooling without requiring professional tools or HVAC licensing.
Equipped with a 25-foot pre-charged Quick Connect® line set, the system uses R-454B refrigerant, which offers a reduced global warming potential (GWP) compared to older refrigerants. Its advanced inverter technology ensures precise temperature control, lower energy consumption, and extended component life by adjusting performance in real-time based on your environment.
Stay connected and in control with integrated Wi-Fi capabilities, allowing full system management from your smartphone using the MRCOOL SmartHVAC app, or through hands-free control with Amazon Alexa or Google Assistant. Whether you’re upgrading a living room, open-concept space, or workshop, this system is built to deliver maximum comfort with minimal installation effort.
✅ Key Features:
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18,000 BTU Capacity – Perfect for spaces between 500–750 sq. ft.
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ENERGY STAR® Certified – Optimized for energy savings and lower utility costs
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Easy DIY Installation – No need for HVAC tools or technician assistance
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25ft Pre-Charged Line Set – Quick Connect® fittings with environmentally friendly R-454B refrigerant
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Inverter Technology – Delivers precise, efficient climate control while reducing energy usage
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Smart Home Integration – Compatible with Alexa, Google Assistant, and the MRCOOL SmartHVAC app
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Heating & Cooling in One Unit – Designed for dependable year-round performance
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Quiet Operation – Designed to operate with minimal indoor noise
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7-Year Compressor & 5-Year Parts Warranty – Long-term peace of mind from a brand you trust
The MRCOOL DIY® 18K BTU Mini Split System is the perfect combination of performance, efficiency, and convenience—ideal for homeowners, renovators, and DIYers who want professional-grade results without professional installation.
| 18,000 BTU MRCOOL DIY 5th Generation Single Zone Mini Split Heat Pump Condenser – R454B | 230V | |
|---|---|
| SKU | DIY-18-HP-C-230D25-O |
| Weight (in lbs) | 93.480000 |
| Brand/Manufacturer | MRCOOL |
| HSPF2 | 11.5 |
| Cooling BTU | 18000 BTU |
| Heating BTU | 18000 BTU |
| Refrigerant | R454B |
| SEER2 (Efficiency) | 22 |
| Compressor Type | Rotary |
| Liquid Line | 1/4″ |
| Suction Line | 1/2″ |
| Max Breaker Size | 20A |
| BTU/Tonnage | 18,000 BTU/1.5 Ton |
| Zone Compatibility | Single Zone |
| Height | 26.5″ |
| Width | 35.04″ |
| Depth | 13.46″ |
| 18,000 BTU MRCOOL DIY 5th Generation Single Zone Wall Mount Mini Split Air Handler – R454B | 230V | |
| SKU | DIY-18-HP-WMAH-230D25-O |
| Weight (in lbs) | 35.490000 |
| Brand/Manufacturer | MRCOOL |
| Replaces | DIY-18-HP-WMAH-230C25 |
| Decibel Level (dBA) | 58.5 |
| Refrigerant | R454B |
| Liquid Line | 1/4″ |
| Suction Line | 1/2″ |
| Liquid Valve Size | 1/4 |
| Suction Valve Size | 1/2 |
| Max Breaker Size | 15A |
| BTU/Tonnage | 18,000 BTU/1.5 Ton |
| Mini Split Type | Wall Mounted |
| Zone Compatibility | Multi Zone |
| Height | 13.19 |
| Width | 42.52 |
| Depth | 8.9 |
| Warranty | 7 Year Compressor/5 Year Parts Warranty |
