Heat or cool two rooms with ease using the MRCOOL DIY® 5th Gen Multi-Zone 18,000 BTU 23.9 SEER2 2-Zone Ductless Heat Pump Split System – 6K + 18K. Perfect for bedrooms, offices, or living spaces, this system combines one 6,000 BTU air handler (ideal for ~200 sq. ft.) and one 18,000 BTU air handler (up to ~800 sq. ft.), powered by a high-efficiency 18,000 BTU condenser.
Engineered for true do-it-yourself installation, the MRCOOL DIY® Series requires no special tools, training, or HVAC licensing. The included pre-charged Quick Connect® line sets are factory-sealed and filled with eco-friendly R-454B refrigerant, making setup simple and eliminating the need for expensive professional installation.
Key Features & Benefits
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DIY® Friendly Installation – Install your own multi-zone mini split with no specialized tools or training.
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High Efficiency Comfort – Up to 23.9 SEER2 energy efficiency rating keeps operating costs low.
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Multi-Room Zoning – Includes one 6K and one 18K wall-mounted air handler for flexible comfort.
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Year-Round Climate Control – Heats, cools, and dehumidifies for four-season performance.
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Smart Controls – Works with the MRCOOL® SmartHVAC app, Amazon Alexa, and Google Home.
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Follow Me® Feature – Adjusts comfort based on where you are in the room.
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Gold Fin® Condenser – Corrosion-resistant for long-lasting outdoor performance.
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Quiet Operation – Sleep mode, mute function, and LED dimming keep comfort uninterrupted.
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Warranty Protection – 7-year compressor, 5-year parts warranty, plus optional lifetime compressor coverage.
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Lifetime Technical Support – Backed by this retailer for ongoing customer support.
Smarter Comfort, Anywhere You Are
Each air handler features a digital display with diagnostic codes, filter cleaning reminders, and system alerts, making maintenance hassle-free. Control each zone independently with the included remotes, or manage everything from your smartphone. For added convenience, the system automatically restores previous settings after a power outage.
With the MRCOOL DIY 18K Dual-Zone Split System, you’ll enjoy maximum comfort, huge savings on installation, and reliable year-round performance—all with the confidence of the original DIY mini split system.
🔥 Upgrade Your Home Comfort with this retailer — the #1 Nationwide Source for Genuine MRCOOL DIY® Systems.
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™.
