Heat or cool two spaces with the MRCOOL DIY 5th Gen Multi-Zone 18,000 BTU 23.9 SEER2 2 Zone Ductless Heat Pump Split System – 6K + 12K, available at this retailer. This dual-zone system is designed for simple DIY installation with no special tools, training, or HVAC certification required—saving you thousands on install costs while delivering reliable comfort throughout the year.
The included (1) 6,000 BTU and (1) 12,000 BTU wall-mounted air handler pair with the 18,000 BTU condenser to provide efficient heating and cooling for areas up to approximately 200 sq. ft. and 550 sq. ft. respectively. Whether you’re upgrading an older HVAC system, finishing a basement, or adding comfort to multiple rooms, this unit offers flexible, reliable, and energy-saving performance.
Thanks to MRCOOL’s DIY Quick Connect® line sets, pre-charged with eco-friendly R-454B refrigerant, installation is quick, clean, and hassle-free—no vacuum pump or refrigerant handling required. Plus, with built-in smart features, you can control your comfort from anywhere using the MRCOOL SmartHVAC app, or voice commands with Amazon Alexa and Google Home.
Key Features:
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18,000 BTU Dual-Zone Condenser with 6K + 12K Air Handlers
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23.9 SEER2 Energy Efficiency with inverter technology
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DIY Quick Connect® Line Sets pre-charged with R-454B refrigerant
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Easy Installation — no HVAC tech required
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Heats, cools, and dehumidifies year-round
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Smart Controls via app, Alexa, or Google Home
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Gold Fin® Condenser for corrosion resistance and durability
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Quiet operation with Sleep Mode, Follow Me® function, and display mute option
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Alerts for filter cleaning, refrigerant levels, and troubleshooting codes
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Warranty: 7-Year Compressor (optional Lifetime), 5-Year Parts
The MRCOOL DIY Multi-Zone 18K (6K + 12K) delivers comfort you can trust in every season. From blazing summers to freezing winters, this dual-zone ductless mini split system is built for efficiency, reliability, and true DIY convenience.
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™.
