Heat or cool two spaces with ease using the MRCOOL DIY 5th Gen Multi-Zone 18,000 BTU 23.9 SEER2 2 Zone Ductless Heat Pump Split System (12K + 12K Air Handlers). Designed specifically for homeowners, this dual-zone ductless system delivers reliable comfort throughout the year without the cost of professional installation.
With its 18,000 BTU condenser, this DIY Series system powers two 12,000 BTU wall-mounted air handlers, each capable of conditioning up to 550 sq. ft., making it ideal for bedrooms, offices, living rooms, or medium-size spaces. As a heat pump, it efficiently cools in summer and reverses operation in winter to provide reliable heating, ensuring true four-season performance.
Why Choose the MRCOOL DIY 5th Gen 18K Dual-Zone System?
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True DIY® Installation – Install it yourself with no special training or tools required.
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Pre-Charged Quick Connect® Line Sets – Pre-filled with eco-friendly R-454B refrigerant, eliminating the need for vacuuming or charging.
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Energy Efficient – 23.9 SEER2 rating with DC inverter technology for lower energy bills.
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Multi-Zone Comfort – Independently control each air handler for personalized comfort in different rooms.
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Smart Controls – Manage your system from anywhere via the MRCOOL Smart Controller App, Amazon Alexa, or Google Home.
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All-in-One Performance – Cooling, heating, dehumidifying, auto mode, sleep mode, and even low ambient cooling for server rooms or cold climates.
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Peace of Mind – Includes a 7-Year Compressor Warranty (with optional lifetime upgrade), 5-Year Parts Warranty, and lifetime technical support.
Added Benefits
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Follow Me® Function – Airflow automatically adjusts to the location of the remote.
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Gold Fin® Condenser – Corrosion-resistant coating ensures durability in all weather.
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Quiet Operation & Mute Mode – Enjoy comfort without unnecessary noise or bright LED displays.
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Auto Restart – System resumes previous settings automatically after a power outage.
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Easy Maintenance – Built-in filter alerts and diagnostic display codes make upkeep simple.
The MRCOOL DIY Multi-Zone 18K 2 Zone System (12K + 12K) is perfect for homeowners who want the comfort of a professional-grade HVAC solution with the savings and satisfaction of a DIY project.
👉 Looking for more zones? The DIY Multi 27,000 BTU System supports up to four indoor units.
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™.
