Experience customizable comfort across five rooms 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 + 18 K).
This system combines advanced inverter technology with true do-it-yourself installation—no technician required. Heat, cool, and dehumidify your home efficiently while saving thousands on professional labor.
Configuration covers every room size:
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Two 6 K BTU cassettes – up to 250 sq ft each
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Two 9 K BTU cassettes – up to 375 sq ft each
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One 18 K BTU cassette – up to 750 sq ft
All powered by a high-efficiency 36 K BTU 23 SEER2 condenser for reliable comfort throughout the year.
⚙️ Key Features
✅ True DIY Installation
Each Quick Connect® line set is pre-charged with eco-friendly R-454B refrigerant, eliminating vacuum pumps and special tools. Just connect and go.
🌡️ Smart Climate Control
Control every zone from the MRCOOL SmartHVAC App or hands-free via Alexa and Google Home. Set schedules, adjust temps, and monitor energy usage anywhere.
💨 Ceiling Cassettes with Sleek Design
Recessed install fits between standard 16-inch joists. Delivers balanced airflow with whisper-quiet performance—ideal for retrofits or new construction.
♻️ Energy Efficient & Eco-Safe
Advanced DC inverter compressor paired with R-454B refrigerant provides high efficiency while reducing environmental impact.
🔒 Reliable Performance & Warranty
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7-Year Compressor Warranty
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5-Year Parts Warranty
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Optional Limited Lifetime Coverage through the MRCOOL Care Program
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Gold Fin® anti-corrosion coating for long-lasting durability
💡 Why Homeowners Choose MRCOOL DIY Ceiling Cassettes
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Heat or cool up to 1,500 sq ft across five zones
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Mix ceiling and wall handlers for custom layouts
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Auto, Sleep & Dehumidify modes for total control
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Wi-Fi and app integration for real-time monitoring
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Filter reminders & quiet operation for low maintenance
📦 What’s 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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(2) 9 K BTU Ceiling Cassettes
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(1) 18 K BTU Ceiling Cassette
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Pre-charged DIY Quick Connect Line Sets & Couplers
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Remote controls & 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 Type | DC Inverter Rotary |
| Noise Level | 64 dBA |
| Connectivity | Wi-Fi, SmartHVAC App, Alexa, Google Home |
| Certifications | AHRI, ETL, Energy Star Certified |
💬 Customer Benefits
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Install it yourself and save on HVAC labor
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0 % financing available via Affirm
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Free shipping on all orders
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Lifetime technical support from MRCOOL
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone Mini Split (6 K + 6 K + 9 K + 9 K + 18 K) provides flexible zoning, efficient performance, and clean aesthetics with easy DIY installation. Enjoy energy-saving comfort and smart controls without the contractor markup.
Build your own comfort — powered by 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™.
