MRCOOL DIY 5th Gen 1.5 Ton 18K BTU 22.5 SEER2 R-454B Complete Bundle Wall Mount Mini-Split 208/230V DIY-18-HP-WM-230D25-O

The MRCOOL® DIY® 5th Generation 18K BTU 22.5 SEER2 R-454B Complete Bundle includes everything needed for a complete single-zone ductless mini-split installation:

• MRCOOL DIY 5th Gen 18K BTU 230V Mini-Split Condenser (DIY-18-HP-C-230D25-O)
• MRCOOL DIY 5th Gen 18K BTU 230V Wall Mount Air Handler (DIY-18-HP-WMAH-230D25-O)
• MRCOOL DIY 5th Gen 25ft 1/4 x 1/2 R-454B Quick Connect® Line Set w/ DIYPRO® Cable (DIY25-1412C-O)
• Wireless Remote Control

Condenser

Tackling an HVAC installation yourself may seem daunting, but the 5th Generation MRCOOL® DIY® 18k BTU 22.5 SEER Ductless Heat Pump Single Zone Mini Split Condenser is built to make the process straightforward and hassle-free. This unit is perfect for heating or cooling spaces ranging from 500 to 700 square feet, and is designed specifically for homeowners—no special tools or prior experience needed.

The system comes with a 25-foot Quick Connect® line set, pre-charged with R-454B refrigerant, which means there's no need to vacuum the lines. This makes the installation process faster, safer, and more cost-effective.

Control options are flexible: use the included wireless remote, the MRCOOL SmartHVAC app on Apple or Android, or use voice commands through Amazon Alexa or Google Assistant. The Follow Me® feature continuously monitors the temperature near the remote and adjusts the system to keep you comfortable.

The DIYPRO® cable is included to protect against the outdoor elements and wildlife, while eliminating the need for electrical conduit. DC Inverter variable-speed technology and R-454B refrigerant ensure efficient, quiet, and environmentally responsible performance.

Air Handler

The 5th Generation MRCOOL® DIY® 18k BTU Ductless Heat Pump Single Zone Mini-Split Air Handler delivers powerful, energy-efficient heating and cooling for spaces up to 800 sq. ft. Designed for easy, tool-free installation, this system requires no professional experience, specialized tools, or costly service calls—making it a fast and affordable comfort solution for homeowners.

This model features the rugged DIYPRO® cable, which eliminates the need for traditional electrical conduit while offering added durability and protection against outdoor elements, animals, and harsh weather conditions.

Control your comfort effortlessly using the included wireless remote, the MRCOOL SmartHVAC app for Apple and Android, or hands-free voice commands via Amazon Alexa or Google Assistant. The Follow Me® function tracks the ambient temperature around the remote to ensure your space is always at the perfect temperature.

Built with DC Inverter variable-speed technology and eco-friendly R-454B refrigerant, this air handler offers quiet, reliable, and energy-efficient performance throughout every season.

Key Features

• Intertek listed 5031495
• Easy DIY installation
• Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
• Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
• Connect to your system remotely from anywhere with WiFi connectivity and the MRCOOL Smart HVAC app
• Control your system with voice commands through compatibility with Amazon Alexa and Google Home
• MRCOOL® DIY® Quick Connect® pre-charged line set included — no vacuum pump or refrigerant handling required
• R-454B refrigerant — next-generation low-GWP refrigerant
• DC Inverter variable-speed compressor for precise, efficient temperature control

Technical Specifications

Certifications

• UL Listed
• ETL Listed — Intertek 5031495
• Energy Star Certified
• AHRI Certified

Warranty

• 5 Year Parts Warranty
• 7 Year Compressor Warranty

Product Documentation

• MRCOOL DIY 5th Gen 18K BTU Complete Bundle AHRI Certification (PDF)
• MRCOOL DIY 5th Gen 18K BTU Complete Bundle Energy Guide (PDF)
• MRCOOL DIY 5th Gen Installation Manual (PDF)
• MRCOOL DIY 5th Gen Warranty Document (PDF)
• MRCOOL DIY 5th Gen Brochure (PDF)

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.