MRCOOL 18,000 BTU DIY 5th Gen Energy Star 22.5 SEER2 Ductless Mini Split Heat Pump System - R454B - 230V

Overview

MRCOOL DIY 5th Gen E Star 18,000 BTU 22.5 SEER2 Ductless Mini Split Heat Pump System - R454B - 230V

Upgrade your space with dependable heating and cooling using the MRCOOL® DIY® 5th Gen 18K BTU Single Zone Mini-Split System, engineered to efficiently condition rooms 500–750 sq. ft. Designed for true homeowner installation, this Energy Star® certified system eliminates the complexity of traditional HVAC setups. The included 25 ft. QuickConnect® pre-charged line set and rugged DIYPRO® cable streamline installation, while smart wireless controls let you manage comfort using the SmartHVAC app, remote, or voice assistants.

Built for high performance and long-term reliability, this system combines advanced inverter technology with durable construction to deliver consistent year-round climate control. Backed by strong warranty coverage and MRCOOL’s trusted engineering, it provides professional-grade heating and cooling without the cost or hassle of professional installation.

Why Choose the MRCOOL® DIY® 5th Gen Mini-Split?

• America’s Leading DIY Mini-Split Brand: Built specifically for homeowner installation, helping you save on professional HVAC installation costs without requiring specialized tools or previous experience.
• Pre-Charged QuickConnect® Line Set: The included line set arrives pre-charged with R-454B refrigerant, eliminating the need for vacuuming, gauges, or refrigerant handling.
• Lower-GWP R-454B Refrigerant: Uses a more environmentally responsible refrigerant with a lower Global Warming Potential than older refrigerants such as R-410A.
• Durable DIYPRO® Cable: Provides added protection against weather, outdoor exposure, and wildlife while eliminating the need for traditional electrical conduit.
• Industry-Leading Energy Efficiency: The MRCOOL® DIY® 5th Gen delivers some of the highest efficiency ratings available in the DIY mini-split category, helping reduce energy consumption and monthly heating and cooling costs while maintaining reliable year-round comfort.
• Multiple Control Options: Adjust the temperature using the included remote, the SmartHVAC app for Apple and Android devices, or voice commands through Amazon Alexa and Google Assistant.
• Follow Me® Function: Uses the temperature around the remote to adjust system performance and deliver more consistent comfort where you are located.
• Dry Mode: Removes excess moisture from the air to improve indoor comfort and help create a less humid living environment.
• Gold Fin® Condenser Protection: The corrosion-resistant condenser coating provides added durability, especially in coastal areas and other demanding outdoor environments.
• Wide Outdoor Operating Range: Provides cooling in outdoor temperatures from -13°F to 122°F and heating from -13°F to 75°F, depending on the specific model and capacity.
• Strong Warranty Protection: Includes a 7-year compressor warranty and a 5-year parts warranty for added long-term peace of mind.
• Intertek Listed: Intertek listing 5031495 demonstrates compliance with applicable product performance and safety standards.

Specifications & Dimensions

Dimensions & Weight

Capacity & Performance

Electrical Requirements

Refrigerant & Piping

Features

Certifications & Warranty