Create reliable comfort throughout the year 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 + 9 K + 18 K).
Engineered for homeowners who want professional performance without hiring an HVAC technician, this powerful system provides precise heating and cooling across five zones — efficiently and quietly.
Configuration breakdown:
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Three 6 K BTU ceiling cassettes – ideal for rooms up to 250 sq ft
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One 9 K BTU cassette – up to 375 sq ft
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One 18 K BTU cassette – up to 750 sq ft
Powered by a 36 K BTU 23 SEER2 inverter condenser, this system balances comfort and savings in every corner of your home.
⚙️ Key Features
✅ DIY Installation — No HVAC Pro Needed
Pre-charged Quick Connect® Line Sets with R-454B refrigerant make setup simple, safe, and affordable. No vacuum pump or specialized tools required.
🌡️ Smart Control From Anywhere
Use the MRCOOL SmartHVAC App or voice assistants like Alexa and Google Home to control temperatures, schedules, and zones remotely.
💨 Ceiling Cassette Comfort
Low-profile indoor units fit neatly between 16-inch joists, providing discreet, even airflow and whisper-quiet performance — ideal for both new builds and retrofits.
♻️ Eco-Friendly & Energy Efficient
The R-454B refrigerant and DC inverter compressor combine for high SEER2 efficiency and reduced energy costs.
🔒 Built for Long-Term Reliability
Backed by a 7-Year Compressor Warranty, 5-Year Parts Warranty, and optional Lifetime Replacement Coverage via MRCOOL Care.
Gold Fin® coating ensures durability against corrosion and harsh weather.
💡 Why Homeowners Choose MRCOOL DIY Ceiling Cassettes
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Heats & cools up to ~1,500 sq ft
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Fully compatible with ceiling and wall air handlers
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Auto, Sleep, and Dehumidify modes for customizable comfort
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Smart app & Wi-Fi integration for remote operation
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Filter reminders and quiet mode for minimal upkeep
📦 What’s Included
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(1) 36 K BTU MRCOOL DIY 5th Gen Condenser
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(3) 6 K BTU Ceiling Cassette Air Handlers
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(1) 9 K BTU Ceiling Cassette
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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 (Max) |
| Connectivity | Wi-Fi, Alexa, Google Home |
| Certifications | AHRI, ETL, Energy Star Certified |
💬 Customer Benefits
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Save thousands with easy DIY installation
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Quiet performance for multi-room comfort
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Free shipping & 0 % Affirm financing
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Backed by lifetime technical support
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone Mini Split (6 K + 6 K + 6 K + 9 K + 18 K) gives you full climate control with simple, safe installation.
Enjoy whisper-quiet comfort, smart controls, and long-term efficiency — all without professional help.
Smart comfort. Simple installation. 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™.
