Comfort every corner of your home with the MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ductless Mini Split System with Ceiling Cassettes (6 K + 6 K + 6 K + 9 K + 9 K).
Designed for easy installation and maximum efficiency, this system provides precise heating and cooling across five rooms — without hiring a contractor.
Configuration coverage:
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Three 6 K BTU cassettes (~250 sq ft each)
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Two 9 K BTU cassettes (~375 sq ft each)
All powered by a 36 K BTU 23 SEER2 inverter condenser delivering quiet, energy-smart comfort year-round.
⚙️ Key Features
✅ True DIY Installation
Patented Quick Connect® Line Sets are pre-charged with eco-friendly R-454B refrigerant — no vacuum pump or pro tools needed. Just connect and tighten.
🌡️ Smart Climate Control
Adjust temps and schedules with the MRCOOL SmartHVAC App or voice control via Alexa and Google Home.
💨 Discreet Ceiling Cassettes
Recessed design fits between standard 16-inch joists for a clean, quiet look that distributes air evenly through each zone.
♻️ Energy Efficient & Eco-Safe
High-performance DC inverter compressor and R-454B refrigerant deliver superior efficiency and lower environmental impact.
🔒 Built to Last
Includes 7-Year Compressor Warranty, 5-Year Parts Warranty, and optional Lifetime Coverage through the MRCOOL Care Program. Gold Fin® coating prevents corrosion for long-term durability.
💡 Why Homeowners Love MRCOOL DIY
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Heats & cools up to ~1,500 sq ft across five zones
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Auto, Sleep & Dry modes for custom comfort
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Mix ceiling and wall air handlers for flexibility
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App and Wi-Fi integration for remote control
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Filter alerts and quiet operation for peace of mind
📦 Included in Box
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(1) 36 K BTU MRCOOL DIY 5th Gen Condenser
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(3) 6 K BTU Ceiling Cassettes
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(2) 9 K BTU Ceiling Cassettes
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Pre-Charged DIY Quick Connect Line Sets & Couplers
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Remotes & Installation Manuals
⚡ Technical Highlights
| Specification | Value |
|---|---|
| Cooling Capacity | 34 000 BTU |
| Heating Capacity | 36 000 BTU |
| Voltage | 208/230 V Single Phase |
| Refrigerant | R-454B |
| SEER2 / HSPF2-4 | 23 / 9.9 |
| Zones Supported | 5 |
| Compressor | DC Inverter Rotary |
| Noise Level | 64 dBA |
| Connectivity | Wi-Fi, Alexa, Google Home |
| Certifications | AHRI, ETL, Energy Star |
💬 Customer Benefits
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DIY install saves $1,000 – $3,000 vs pro labor
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0 % Affirm financing & free shipping
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Lifetime tech support from MRCOOL
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Energy-smart comfort all year long
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone (6 K + 6 K + 6 K + 9 K + 9 K) delivers precise, efficient comfort for every room.
Enjoy smart control, clean design, and professional-grade results — installed entirely by you.
DIY comfort made easy with this retailer.
Shipping Policy
Free Standard Shipping
We offer free standard shipping on all orders. Orders are processed within 1–2 business days and typically arrive within 5–7 business days.
Expedited Shipping
Expedited shipping options are available at checkout. Expedited orders placed before 12pm EST ship the same business day.
Order Tracking
Once your order ships you will receive a confirmation email with a tracking number. You can track your shipment at any time through our website or the carrier's portal.
International Shipping
We currently ship within the United States only. International shipping is not available at this time.
Return Policy
30-Day Returns
We accept returns within 30 days of delivery. Items must be unused, in their original packaging, and in the same condition as received.
How to Initiate a Return
Contact our support team at sales@homecrucial.com with your order number and reason for return. We will provide a prepaid return label within 1–2 business days.
Refunds
Refunds are processed within 5–7 business days after we receive the returned item. The refund will be issued to your original payment method.
Non-Returnable Items
Items that have been installed, used, or damaged after delivery are not eligible for return.
Warranty
Manufacturer's Warranty
All products sold at Home Crucial are covered by the manufacturer's warranty. Warranty terms vary by brand and product — please refer to the documentation included with your product for specific details.
What Is Covered
Manufacturer warranties typically cover defects in materials and workmanship under normal use and conditions. Coverage does not include damage caused by misuse, improper installation, or normal wear and tear.
Warranty Claims
To initiate a warranty claim, contact us at sales@homecrucial.com with your order number, a description of the issue, and photos if applicable. We will coordinate with the manufacturer on your behalf.
Extended Protection
Extended warranty and protection plans may be available for select products. Contact us for more details.
Customer Reviews
★★★★★ 4.9 out of 5 · 20 reviews
High-efficiency 5th Gen ENERGY STAR® rated DIY mini split heat pumps.
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Outdoor esthetics do matter.
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Create your bundle with ease.
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Authorized Dealer of Mr Cool™.
