Chat
What Size MRCOOL Mini Split Do I Need?
MRCOOL Mini Split Line Set Length Limits
MRCOOL DIY Select 18K BTU Complete System – White or Black
Product Overview
The MRCOOL® DIY® Select 18K BTU 230V Ductless Mini-Split Heat Pump System delivers powerful, energy-efficient heating and cooling for spaces up to 800 square feet. Available in both white and black finishes, this complete system pairs the DIYS-18-HP-C-230A11-O outdoor condenser with your choice of white (DIYS-18-HP-WMAH-230A13-O) or black (DIYS-18-HP-B-WMAH-230A13-O) indoor air handler to create a cohesive, modern look that complements any interior style.
Ideal for garages, attics, basements, bonus rooms, home offices, and similar-sized spaces, it provides consistent year-round comfort while helping reduce energy usage and monthly utility costs.
High-Efficiency Performance
The system delivers strong performance with a 17.3 SEER2 cooling rating and 8.5 HSPF2-4 heating efficiency, providing dependable, energy-efficient comfort year-round while helping control utility costs. The inverter-driven compressor continuously adjusts output to match your space's exact demand, maintaining consistent temperatures without the on/off cycling of conventional systems.
True DIY Installation
Built as part of the MRCOOL® DIY® lineup, this system is engineered for true do-it-yourself installation, requiring no specialized tools, HVAC certifications, or prior experience. The included 11.5-foot Quick Connect® line set arrives factory pre-charged with environmentally friendly R-454B refrigerant, eliminating the need for vacuum pumps, refrigerant handling, or specialized HVAC tools.
The included 13-foot DIYPRO® cable further streamlines setup by replacing traditional electrical conduit while protecting wiring from moisture, pests, and outdoor exposure. Most components are included, making setup faster and more approachable for first-time installers.
Smart Control & Comfort Features
Comfort control is simple and flexible using the included wireless remote or the MRCOOL® Comfort app, which allows you to adjust temperatures, create schedules, and monitor energy usage from anywhere. Voice-control compatibility with Amazon Alexa and Google Assistant adds hands-free convenience.
Advanced features like Dry Mode, Sleep Mode, Auto Mode, and programmable scheduling enhance comfort while optimizing efficiency. The Gold Fin® condenser coating provides added corrosion resistance for long-term durability, even in humid or coastal environments.
Quiet Operation
With indoor noise levels as low as 18.5 dB(A) in low-speed operation, this system is ideal for bedrooms, home offices, and any space where silence matters. The outdoor unit operates at just 55 dB(A).
Peace of Mind
The MRCOOL® DIY® Select 18K is backed by a 2-year compressor warranty and 1-year parts warranty for added peace of mind.