MRCOOL DIY Mini-Split Series 5th Generation 18,000 BTU 2-Zone Wall Mounted 9K+9K Heat Pump System

MRCOOL SKU: DIY-MULTI3-18HP230D-O,2xDIY-09-HP-WMAH-230D25-O,2xDIY25-1412-O

MRCOOL DIY 18,000 BTU 2-Zone Wall-Mounted 9K+9K Mini-Split Heat Pump Complete System

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MRCOOL DIY Mini-Split Series 5th Generation 18,000 BTU 2-Zone Wall Mounted 9K+9K Heat Pump System

Delivers up to 23.9 cooling and 10 heating efficiency.
Includes an 18000 BTU outdoor unit, two wall-mounted indoor units, two wireless remote controls, and two 25' pre-charged linesets.
Designed to heat and cool two separate rooms up to 400 sq. ft. each.
Pre-charged linesets allow customers to install this ductless system without special tools, equipment, or training.

Save $831.12

MRCOOLSKU: DIY-MULTI3-18HP230D-O,2xDIY-09-HP-WMAH-230D25-O,2xDIY25-1412-O

PRE-SALE! Be the first to receive the new A2L Model upon release in the Summer of 2025

Retail price:

$4,155.60 USD $4,986.72 USD

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Description

Efficient, compact, and built for ease, the MRCOOL® DIY 5th Generation 18,000 BTU 2-Zone Mini-Split System is the perfect solution for small homes, apartments, or additions. With two 9K BTU indoor air handlers, this system provides zoned heating and cooling to individual rooms—giving you greater comfort and control without costly installation.

This 5th Generation system includes:

(1) 18k BTU Multi-Zone DIY® Condenser (DIY-MULTI3-18HP230D-O)
(2) 9k BTU Wall-Mounted Air Handlers (2xDIY-09-HP-WMAH-230D25-O)
(2) 25 ft DIY® Quick Connect® Line Sets (2xDIY25-1412-O)

Together, this system can efficiently heat and cool up to 750 sq. ft., making it ideal for two bedrooms, offices, or smaller zones within your home.

✅ UL Listed, ETL Listed, and AHRI Certified

🛠️ True DIY Installation

Forget expensive installation appointments—this MRCOOL® DIY® system is pre-charged with R-454B refrigerant and features Quick Connect® line sets, eliminating the need for vacuuming or specialized tools. You just connect, tighten, and power on!

🌿 Eco-Friendly & Efficient

Featuring high SEER2 efficiency and next-gen R-454B refrigerant, this system lowers your utility bills and reduces your carbon footprint while delivering reliable performance year-round.

📱 Smart Home Integration

Manage your comfort anytime, anywhere with:

The SmartHVAC app for iOS & Android
Amazon Alexa & Google Assistant voice control
Included wireless remotes for manual convenience
Follow Me® mode, which directs comfort to wherever the remote goes

💧 Built-In Humidity Control

Each 9k BTU air handler features Dry Mode, helping to balance humidity for better comfort and air quality—perfect for keeping mustiness and mold at bay in smaller spaces.

🛡️ Built to Last

The Gold Fin® condenser coating protects your outdoor unit against corrosion, making it durable even in coastal or extreme environments. The DIYPRO® cable provides added durability against the elements and curious critters.