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MRCOOL 18,000 BTU 5th Gen DIY 3-Zone Multi-Split Condenser | R-454B - DIY-MULTI3-18HP230D-O

Summary

The 5th Generation MRCOOL® DIY® 18K BTU Multi-Zone Condenser delivers premium efficiency with a 23.9 SEER2 rating and 10 HSPF2-4 rating, capable of heating/cooling up to three rooms (750 sq. ft. combined). Featuring revolutionary R-454B refrigerant and DIY Quick Connect® line sets (sold separately), this system eliminates the need for professional installation while offering smart controls via Alexa, Google Home, and the Smart HVAC app. With industry-leading warranties including Limited Lifetime Replacement (with registration), this 1.5-ton DC inverter system represents the pinnacle of DIY comfort technology.

Important

Professional installation NOT required - designed for DIY. Registration required for Limited Lifetime Replacement warranty. Compatible with up to 3 MRCOOL DIY air handlers (sold separately). Quick Connect® line sets required (sold separately) - pre-charged with R-454B refrigerant.

What's Included

• 18,000 BTU Multi-Zone Condenser (Model DIY-MULTI3-18HP230D-O)
• DIYPRO® Cable (eliminates need for electrical conduit)
• Installation Manual
• User's Manual
• Warranty Information

Key Features

• True DIY Installation - No HVAC technician or specialized tools required
• 3-Zone Capacity - Supports up to 3 air handlers (750 sq. ft. total)
• Smart Controls - Works with Smart HVAC app, Amazon Alexa & Google Home
• Follow Me® Function - Tracks remote location for optimal comfort
• Premium Efficiency - 23.9 SEER2, 10 HSPF2-4 ratings
• R-454B Refrigerant - More efficient and eco-friendly formula
• DC Inverter Technology - For consistent, energy-saving operation
• Gold Fin® Condenser - Superior corrosion resistance
• Quiet Operation - 60 dBA noise rating

Complete Technical Specifications

Performance Features

Warranty Information

• Limited Lifetime Replacement Warranty - With enrollment in MRCOOL® Care Program
• 7 Year Compressor Warranty
• 5 Year Parts Warranty
• Registration required within 60 days of installation

Manuals & Certifications

• Product Brochure
• Installation & Owner's Manual
• Remote Control Manual
• Warranty Registration
• Smart Kit Manual
• AHRI Certification

Safety Information

PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Advanced Technology

The MRCOOL DIY® 5th Generation Multi-Zone system features DC inverter technology with a rotary compressor for ultra-efficient operation. The R-454B refrigerant offers superior performance with lower environmental impact compared to previous refrigerants. With three independent zones, you can customize temperatures room-by-room while maintaining 23.9 SEER2 efficiency - among the highest ratings available for DIY systems.

Smart Home Integration

Control your climate from anywhere with the Smart HVAC app for iOS and Android devices. Create custom schedules, monitor energy usage, and adjust temperatures remotely. Voice control integration with Amazon Alexa and Google Home allows hands-free operation. The included wireless remote features Follow Me® technology that ensures optimal comfort by adjusting operation based on the remote's location in your home.

Installation Advantages

The revolutionary DIY design eliminates the need for professional installation. The system works with pre-charged Quick Connect® line sets (sold separately) that require no vacuuming or special tools. The DIYPRO® cable simplifies electrical connections without requiring conduit. With support for up to 172.2 ft of line set length, you have flexibility in unit placement. The Gold Fin® condenser coating provides exceptional protection against corrosion, even in coastal environments.