MRCOOL DIY Select 18,000 BTU Single Zone Mini Split System 230V with 11.5 ft. DIY Quick Connect Line Set - DIYS-18-HP-230A11-O

Overview

Condenser

The MRCOOL® DIY® Select 18K BTU 230V Ductless Heat Pump Single Zone Mini-Split Condenser is designed to make HVAC installation simple and accessible for homeowners. Built for true do-it-yourself installation, it requires no specialized tools, certifications, or prior HVAC experience. Ideal for garages, home offices, studios, and similar spaces, it delivers reliable heating and cooling for areas up to 800 square feet. Despite its DIY®-friendly design, the system delivers strong performance with a 17.3 SEER2 cooling rating and 8.5 HSPF2-4 heating efficiency, providing consistent, energy-efficient comfort year-round while helping control utility costs. Installation is further simplified with an 11.5-foot Quick Connect® line set that arrives factory pre-charged with environmentally friendly R-454B refrigerant, eliminating the need for vacuum pumps or refrigerant handling. Most components are included, making setup faster and more approachable for first-time installers. Comfort control is easy using the included wireless remote or the MRCOOL® Comfort app, which allows remote temperature control, scheduling, and energy monitoring. Compatibility with Amazon Alexa and Google Assistant adds hands-free convenience. Features like Sleep Mode, Dry Mode, Auto, and a Gold Fin® condenser coating enhance comfort and durability, even in humid or coastal environments. For added peace of mind, the MRCOOL® DIY® Select system is backed by a 2-year compressor warranty and a 1-year parts warranty.

Air Handler

The MRCOOL® DIY® Select 18K BTU 230V Ductless Mini-Split Heat Pump Air Handler delivers efficient, reliable heating and cooling for spaces up to 800 square feet. Ideal for garages, attics, basements, and bonus rooms, it provides consistent year-round comfort with simple operation and high efficiency. Designed within the MRCOOL® DIY® lineup, this system supports true do-it-yourself installation. The compatible Quick Connect® line set comes factory pre-charged with environmentally friendly R-454B, eliminating the need for vacuum pumps or refrigerant handling. Additionally, the included 13-foot DIYPRO® cable replaces traditional electrical conduit, streamlining installation while safeguarding wiring from moisture, pests, and everyday wear. Control your comfort easily with the included wireless remote or the MRCOOL® Comfort app, which allows you to adjust temperatures, set schedules, and monitor energy usage from anywhere. Compatibility with Amazon Alexa and Google Assistant enables convenient hands-free voice control. Advanced features like Dry Mode, Sleep Mode, Auto Mode, and programmable scheduling enhance comfort while optimizing efficiency. A Gold Fin® condenser coating adds corrosion resistance, making the system well-suited for humid or coastal environments. The MRCOOL® DIY® Select 18K includes a 2-year compressor warranty and 1-year parts warranty.

Specifications

Condenser Specifications

Air Handler Specifications

Installation & Guides

BROCHURE

INSTALL MANUAL

REMOTE MANUAL

SERVICE MANUAL

WARRANTY DOC

AHRI CERTS

ENERGY GUIDE CERTS

Whats Included in the Box

18,000 BTU Indoor Air Handler

18,000 BTU Outdoor Condenser

11.5 ft Quick Connect® line set

13-foot DIYPRO® cable

WiFi Smart Controller (built-in)

Remote

User Manual & Warranty Documentation