Create even, efficient comfort throughout your home with the MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ductless Mini Split System with Ceiling Cassettes (6 K + 6 K + 9 K + 9 K + 9 K).
This flexible system delivers year-round heating and cooling to five spaces of different sizes—all without professional installation or ductwork.
System includes:
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Two 6 K BTU cassettes (~250 sq ft each)
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Three 9 K BTU cassettes (~375 sq ft each)
Powered by a high-efficiency 36 K BTU 23 SEER2 condenser for balanced comfort and low energy bills.
⚙️ Key Features
✅ True DIY Installation
Pre-charged Quick Connect® Line Sets with R-454B refrigerant let you install confidently—no vacuum pump, gauges, or licensed tech required.
🌡️ Smart Zoning & App Control
Set different temperatures in each room from your phone via the MRCOOL SmartHVAC App, or use Alexa / Google Home voice commands.
💨 Discreet Ceiling Cassettes
Low-profile design hides neatly between 16-inch joists, providing whisper-quiet airflow and a clean modern look.
♻️ Energy Efficient Operation
DC inverter compressor + R-454B refrigerant = high SEER2 ratings and lower energy costs.
🔒 Reliable Warranty Coverage
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7-Year Compressor Warranty
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5-Year Parts Warranty
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Optional Lifetime Replacement via MRCOOL Care
Gold Fin® coating prevents corrosion for long-term durability.
💡 Why This Configuration Is Ideal
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Perfect for two small + three medium rooms
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Mix-and-match ceiling & wall handlers if needed
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Auto, Sleep & Dehumidify modes for personalized comfort
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Smart connectivity and filter alerts reduce maintenance
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Energy Star Certified for efficiency and rebate eligibility
📦 Included
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(1) 36 K BTU 5th Gen MRCOOL DIY Condenser
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(2) 6 K BTU Ceiling Cassettes
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(3) 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, SmartHVAC App, Alexa, Google Home |
| Certifications | AHRI, ETL, Energy Star |
💬 Customer Benefits
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DIY install saves thousands in labor
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0 % Affirm financing available
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Free shipping nationwide
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Lifetime technical support from MRCOOL
🏁 The DIY Comfort Advantage
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone Mini Split (6 K + 6 K + 9 K + 9 K + 9 K) gives you multi-room control, energy savings, and sleek design—all in a true DIY package.
Stay comfortable year-round with smart control and efficient performance, backed by MRCOOL’s trusted warranty.
Comfort you can install yourself — only from 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™.
