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The MRCOOL 48K DIY Multi-Zone Bundle With Two 18K Air Handlers & 16ft Line Sets 48,000 BTU Multi-Zone Ductless Mini-Split System (model DIYM248HPW05D00) is engineered to provide powerful, customizable climate control for larger spaces — all without the need for expensive HVAC labor. Designed with serious heating and cooling needs in mind, this high-capacity system delivers up to 48,000 BTU of performance, making it ideal for master bedrooms, living areas, workshops, basements, and high-ceiling rooms that demand robust comfort solutions.
This bundle brings together a top-tier 48K double-stack condenser paired with two 18,000 BTU indoor wall-mounted air handlers, offering significant capacity for oversized areas while still supporting smaller zones independently. With MRCOOL’s SmartHVAC Wi-Fi controller and DIYPro® cable technology included, you can manage settings easily with your smartphone or voice assistants like Amazon Alexa and Google Home without complicated installation tools or refrigerant handling.
Featuring patented DIY® Quick-Connect® pre-charged line sets, this system eliminates the need for vacuum pumps, gauges, or HVAC training — simply tighten and lock the fittings and you’re ready to go. Pre-charged with eco-friendly R-454B refrigerant and equipped with corrosion-resistant Gold-Fin® coating, the bundle is built for long-lasting durability and year-round comfort across two large rooms.
Whether you’re upgrading your home comfort or outfitting a large living space, this MRCOOL bundle combines high-end performance with true DIY convenience — giving you professional-grade heating and cooling capability without the professional installation cost.
True DIY installation with patented Quick-Connect® pre-charged line sets — no vacuum pumps or refrigerant work required.
Powerful 48,000 BTU double-stack condenser supports up to six zones (expandable beyond the included two zones).
SmartHVAC Wi-Fi control via smartphone, Alexa, or Google Home included.
Gold-Fin® anti-corrosion coating for enhanced durability.
Whisper-quiet indoor operation with Follow-Me® temperature sensing.
Energy-efficient inverter compressor with 21.8 SEER2 cooling efficiency.
Built-in Dry Mode for humidity control.
| Specification | Details |
|---|---|
| Model | DIYM248HPW05D00 |
| System Capacity | 48,000 BTU |
| Condenser Model | DIY-MULTI6-48HP230D-O |
| Indoor Air Handlers | 2 × DIY-18-HP-WMAH-230D25-O |
| Line Sets Included | 2 × DIY16-1412-O (16 ft 1/4″ × 1/2″ pre-charged) |
| Refrigerant | R-454B (pre-charged) |
| SEER2 Efficiency | 21.8 SEER2 (cooling) |
| Wi-Fi Control | SmartHVAC™ Wi-Fi included |
| Compatible Zones | Up to 6 zones supported by condenser |
| Breaker Size (Max) | 45 A |
| Min. Circuit Ampacity | 40 A |
| Indoor Features | Follow-Me® temp sensing, inverter tech, Dry Mode, multi-speed airflow |
✔ Outdoor Unit
✔ Indoor Units
✔ Line Sets
✔ Accessories
Do the 18K units heat well in winter?
Yes — they provide reliable heating using inverter technology.
Can the 48K condenser run six zones later?
Absolutely. You can expand as your needs grow.
Is the installation really DIY?
Yes — Quick-Connect line sets eliminate vacuum pumps and gauges.
What’s the room size coverage for each 18K unit?
Typically 700–800 sq. ft. depending on layout and insulation.
Is this system WiFi-ready?
Yes — full SmartHVAC control out of the box.
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