The MRCOOL DIY 4th Gen 18K BTU Ductless Mini-Split Heat Pump System is a powerful, energy-efficient, and truly DIY-friendly solution for heating and cooling spaces up to 750 sq. ft. This system includes a pre-charged 25 ft. line set, eliminating the need for special tools or professional installation.

With a high-efficiency 22 SEER rating and Energy Star certification, this unit delivers year-round comfort while reducing energy costs. Whether you're upgrading your home, adding climate control to a new space, or replacing an outdated system, the MRCOOL DIY Mini-Split is the perfect choice for homeowners seeking convenience and performance.

✔ Key Features

✔ Easy DIY Installation

• Pre-charged 25 Ft. Line Set – No vacuuming or special tools required.
• User-Friendly Design – Install it yourself with basic tools and clear step-by-step instructions.
• Significant Cost Savings – No need to hire an HVAC professional.

✔ Versatile Operating Modes

This system adapts to your needs with multiple comfort modes:

• AUTO – Automatically switches between heating and cooling as needed.
• HEAT – Provides efficient warmth during cold months.
• COOL – Powerful cooling keeps your space comfortable all summer.
• FAN-ONLY – Circulates air without heating or cooling.
• DRY (Dehumidification) – Removes excess moisture for improved indoor air quality.
• SLEEP – Adjusts temperature settings for maximum nighttime comfort and energy efficiency.

✔ Advanced Comfort Features

• Follow Me Function – The temperature sensor in the remote ensures the system adjusts cooling and heating based on where you are in the room.
• Smartphone Integration – Control your system from anywhere using the Smart HVAC app for iOS & Android.

✔ Extended Line Set Options

The system includes a standard 25 ft. pre-charged line set, but if your installation requires a longer reach, MRCOOL offers extended line set options. Each extended set includes:

• Pre-charged refrigerant lines
• Necessary control cables
• DIY couplers for easy connection

These flexible installation options make it easy to customize your setup to fit your space.

✔ Warranty & Long-Term Reliability

MRCOOL offers an industry-leading warranty, giving you confidence in your purchase:

✔ Limited Lifetime Compressor Warranty (with registration)
✔ 7-Year Compressor Coverage
✔ 5-Year Parts Warranty

This comprehensive coverage ensures long-term system reliability, providing you with peace of mind.

Why Choose MRCOOL DIY?

• True DIY Installation – Save thousands on labor costs.
• Pre-Charged Quick Connect Line Set – No refrigerant handling required.
• Energy Star Certified – Designed for maximum efficiency and cost savings.
• Industry-Leading Warranty – Protects your investment for years to come.
• USA’s Most Trusted Independent MRCOOL Dealer – MRCOOL DIY Direct provides expert support and fast nationwide shipping.

Order Your MRCOOL DIY 4th Gen Mini-Split Today!

Upgrade your home with a DIY-friendly, high-efficiency heating and cooling system that delivers unmatched performance and comfort. Shop now at MRCOOL DIY Direct – the #1 trusted source for MRCOOL products!

Specifications & Dimensions