MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V, DIY-18-HP-WMAH-230D25-O
MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V, DIY-18-HP-WMAH-230D25-O is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
We offer fast and reliable shipping across the continental U.S., with free shipping available on most orders (exclusions may apply based on brand and product type). Orders are typically processed within 1–2 business days and transit time is usually 4–7 business days. Larger items may ship via freight and require a scheduled curbside delivery. Please ensure your contact details are accurate at checkout. For questions about delivery timelines, shipping eligibility, or special requests, feel free to contact us directly. See Policy.
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Do You Offer Financing?
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Price Match Guarantee
Price Match Guarantee
We’re committed to offering the best online prices—if you find a lower price from an authorized retailer, we’ll beat it. Our 100% Price Beat Guarantee excludes promotions, auction sites, and exchanges, and factors in item price, tax, and shipping. For price match inquiries, contact us at (833) 932-9683
Introducing the 5th Gen MRCOOL® DIY® 18K BTU Multi-Zone Mini Split Air Handler for year-round heating and cooling in spaces up to 750 sq. ft. Customize comfort with wireless remote, SmartHVAC app, or voice commands. Industry-leading warranty for reliable, energy-efficient performance.
- DIY Installation: Easy, tool-free setup with no prior experience required.
- DIY® QuickConnect® Line Set: Pre-charged with R-454B refrigerant for quick and vacuum-free installation.
- Environmentally Friendly Refrigerant: R-454B refrigerant has a lower Global Warming Potential (GWP) than older refrigerants like R-410A, reducing environmental impact while improving energy efficiency.
- DIYPRO® Cable: Eliminates the need for electrical conduit, offering enhanced durability against outdoor elements and wildlife.
- Wireless Control Options: Use the included remote, SmartHVAC app (Apple and Android), or voice commands via Amazon Alexa and Google Assistant.
- Follow Me Function: Maintains consistent comfort by adjusting airflow based on the remote’s location.
- Dry Mode: Acts as a dehumidifier to reduce excess moisture and improve indoor air quality.
- Industry-Leading Warranty: Limited lifetime warranty, 7-year compressor warranty, and 5-year parts warranty.
- Certified Quality: Intertek listed 5031495 for reliable performance and safety.







