Enjoy perfectly balanced comfort in every room with the MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ductless Mini Split System with Ceiling Cassettes (6 K + 6 K + 6 K + 6 K + 9 K).
This system offers precise heating and cooling for evenly sized spaces — four 6 K air handlers ideal for bedrooms or offices (~250 sq ft each) and one 9 K unit (~375 sq ft) for a slightly larger area.
Powered by a 36 K BTU 23 SEER2 condenser, it combines energy efficiency, quiet operation, and a true DIY installation you can complete without specialized tools or HVAC experience.
⚙️ Key Features
✅ No HVAC Pro Needed
Pre-charged Quick Connect® Line Sets with eco-friendly R-454B refrigerant let you connect and seal your system without vacuum pumps or gauges.
🌡️ Smart Zoning & App Control
Manage zones individually with the MRCOOL SmartHVAC App, or use Amazon Alexa and Google Home for voice control.
💨 Low-Profile Ceiling Cassettes
Recessed design fits between standard 16-inch joists for a discreet look and even air distribution in every room.
♻️ High Efficiency & Eco Safety
Advanced DC inverter compressor and R-454B refrigerant provide outstanding efficiency and lower environmental impact.
🔒 Warranty & Protection
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7-Year Compressor Warranty
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5-Year Parts Warranty
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Optional Lifetime Coverage via MRCOOL Care Program
Gold Fin® coating protects the condenser from corrosion for long-term performance.
💡 Why Homeowners Love It
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Perfect for homes up to ~1,500 sq ft
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Quiet and discreet ceiling design
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Auto, Sleep & Dry modes for seasonal comfort
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App & Wi-Fi integration for remote control
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Filter alerts and self-diagnostics for easy maintenance
📦 What’s Included
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(1) 36 K BTU MRCOOL DIY 5th Gen Condenser
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(4) 6 K BTU Ceiling Cassettes
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(1) 9 K BTU Ceiling Cassette
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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 Type | DC Inverter Rotary |
| Noise Level | 64 dBA |
| Connectivity | Wi-Fi, Alexa, Google Home |
| Certifications | AHRI, ETL, Energy Star Certified |
💬 Customer Benefits
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DIY install saves thousands on labor
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Quiet comfort in five rooms
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Free shipping & 0 % Affirm financing
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Lifetime tech support from MRCOOL
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone Mini Split (6 K + 6 K + 6 K + 6 K + 9 K) offers balanced power and energy-smart comfort for homes with multiple small rooms plus one larger zone.
Enjoy professional-grade performance you can install yourself — backed by MRCOOL’s industry-leading warranty and support.
Balanced comfort, DIY simplicity — 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™.
