Personalize the climate in every part 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 + 12 K).
Designed for homeowners who value efficiency and independence, this system delivers powerful heating and cooling across five rooms—all installable without an HVAC crew.
Configuration coverage:
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Three 6 K BTU cassettes – ~250 sq ft each
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One 9 K BTU cassette – ~375 sq ft
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One 12 K BTU cassette – ~500 sq ft
All driven by a 36 K BTU 23 SEER2 inverter condenser for year-round performance.
⚙️ Key Features
✅ DIY Installation Made Simple
Patented Quick Connect® line sets come pre-charged with R-454B refrigerant, eliminating vacuum pumps and pro tools—just connect and tighten.
🌡️ Smart Zoning & App Control
Manage temperatures, schedules, and energy usage from the MRCOOL SmartHVAC App or with Alexa and Google Home voice commands.
💨 Low-Profile Ceiling Cassettes
Slim, recessed design fits between standard 16-inch joists for discreet installation and quiet, balanced airflow.
♻️ Energy-Efficient and Eco-Friendly
Advanced DC inverter technology and new R-454B refrigerant combine for high SEER2 efficiency and reduced environmental impact.
🔒 Backed by Strong Warranties
Includes a 7-Year Compressor Warranty, 5-Year Parts Warranty, and optional Lifetime Coverage via the MRCOOL Care Program.
Gold Fin® coating protects against corrosion for lasting reliability.
💡 Why Choose MRCOOL DIY
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Heats & cools up to ~1,500 sq ft across five zones
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Combine ceiling and wall air handlers as needed
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Auto, Sleep, and Dry modes for custom comfort
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Quiet operation with filter reminders and self-diagnostics
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Smart Wi-Fi integration for hands-free control
📦 Included in the Box
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(1) 36 K BTU 5th Gen MRCOOL DIY Condenser
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(3) 6 K BTU Ceiling Cassettes
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(1) 9 K BTU Ceiling Cassette
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(1) 12 K BTU Ceiling Cassette
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Pre-charged DIY Quick Connect Line Sets & Couplers
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Remotes and 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 (Max) |
| Connectivity | Wi-Fi, Alexa, Google Home |
| Certifications | AHRI, ETL, Energy Star Certified |
💬 Customer Benefits
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Save thousands with DIY installation
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Quiet operation for multi-room comfort
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Free shipping + 0 % Affirm financing
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Lifetime technical support from MRCOOL
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone (6 K + 6 K + 6 K + 9 K + 12 K) system blends versatility, efficiency, and ease of installation.
It’s the perfect setup for homeowners who want reliable, smart climate control without paying for professional HVAC labor.
DIY comfort made simple — 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™.
