MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v
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Warranty Protection
Trusted Returns Policy
MODEL: DIY-MULTI6-55HP230D-O
Whole-Home Climate Control for Up to 2,290 sq. ft. — No HVAC Tech Needed
The MRCOOL® 55K DIY® 5th Generation Multi-Zone Mini-Split Condenser is the ultimate home comfort solution for larger properties or multi-room spaces. This powerful, energy-efficient system can heat and cool up to 6 separate zones covering a combined area of up to 2,290 sq. ft. — all without professional installation.
Featuring a SEER2 rating of 22 and an impressive HSPF2-4 of 10.6, it delivers reliable, eco-friendly performance while lowering utility costs. The patented Quick Connect® pre-charged line sets filled with R-454B refrigerant make installation a simple, clean, and fast DIY project with no need for special tools or refrigerant handling. (Line sets sold separately.)
Connect it to the SmartHVAC® app for complete control via your smartphone or voice commands through Amazon Alexa and Google Assistant. Set schedules, adjust temperatures, monitor energy usage, and customize modes from anywhere.
Backed by a leading warranty, including a Limited Lifetime Compressor Warranty (with registration), the MRCOOL® 55K DIY® system ensures lasting comfort, convenience, and peace of mind for your entire home.
Why You’ll Love It
✅ Heats & Cools Up to 6 Separate Zones — Ideal for large homes or multi-room setups
✅ 100% DIY-Friendly — Quick Connect® pre-charged line sets for tool-free installation
✅ High-Efficiency Performance — SEER2 22 and HSPF2-4 10.6 for outstanding savings
✅ Smart Home Ready — Control via SmartHVAC® app, Alexa, or Google Assistant
✅ Follow Me® Remote — Adjusts temperature to your exact location
✅ Quiet Rotary DC Inverter Compressor — Smooth, energy-efficient operation at just 64 dBA
✅ Eco-Conscious Refrigerant — R-454B for reduced environmental impact
✅ Outstanding Warranty — Limited Lifetime Compressor (with registration), 7-Year Compressor, 5-Year Parts
What’s Included:
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MRCOOL® 55K DIY® 5th Gen 6-Zone Mini-Split Condenser
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DIYPro™ Communication Cable
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Wireless Remote Control
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Installation Accessories
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MRCOOL® Warranty
Specifications
Specifications at a Glance
| Attribute | Details |
|---|---|
| BTU Capacity | 47,000 (Cooling) / 55,000 (Heating) |
| Voltage | 208/230V |
| Zones Supported | Up to 6 |
| SEER2 | 22 |
| HSPF2-4 / HSPF2-5 | 10.6 / 8.5 |
| Refrigerant Type | R-454B |
| Line Set Compatibility | MRCOOL® Quick Connect® |
| Max Line Set Length (ft) | 221.4 |
| Liquid Line Size | 1/4″ |
| Suction Line Size | (3/8″ x4) (1/2″ x2) |
| Sound Rating (dBA) | 64 |
| Wi-Fi Compatibility | Yes (SmartHVAC App, Alexa, Google Assistant) |
| Warranty | Limited Lifetime Compressor (registered), 7-Year Compressor, 5-Year Parts |
Installation
Installation & Guides
Room Size & BTU Coverage Guide
| BTU Rating | Ideal Coverage Area (Approx.) |
|---|---|
| 55,000 | 2,290 sq. ft. (up to 6 rooms) |
Important:
Always consider ceiling height, insulation, sun exposure, and other room-specific factors when choosing your system.
What You Need for a Complete System
To complete your installation, pair this condenser with:
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MRCOOL® DIY® 5th Gen Multi-Zone Air Handlers (up to 6 total)
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MRCOOL® Quick Connect® Pre-Charged Line Sets (available in various lengths)
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DIYPro™ Communication Cables (25ft included with each air handler)
Optional Accessories:
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MRCOOL® Wall Mount Brackets
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Additional Quick Connect® Line Sets
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Coupler Kits for longer runs
This condenser is compatible only with MRCOOL® DIY® 5th Gen Multi-Zone Air Handlers.
Shipping & Returns
Shipping Policy
At Cool Heat Direct, we offer free curbside delivery on all MRCOOL product orders via FedEx Ground, FedEx Freight, or trusted carriers depending on order size.
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Deliveries are made to the curbside — please arrange assistance for heavy or large items, as drivers do not carry items indoors or upstairs.
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Tracking details will be sent within 3–5 business days after placing your order.
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Freight shipments are scheduled directly by the carrier using the contact information you provide at checkout.
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Please inspect your shipment upon delivery and report any visible damage on the delivery receipt.
Return Policy
We want you to love your purchase from Cool Heat Direct. If you need to return an item:
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Contact us within 30 days of delivery.
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Items must be unused, uninstalled, and in their original packaging.
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A 35% restocking fee applies to all approved returns.
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Accessories such as line sets, wall mounts, and couplers are non-returnable.
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Return shipping is the customer’s responsibility unless the item is damaged or defective on arrival.
To start a return, please email us at support@coolheatdirect.com with your order number and reason for return.
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