MRCOOL DIY Select 18,000 BTU 17.3 SEER2 Ductless Mini Split Heat Pump with 11.5 ft. DIY Line set 230V – Black Air Handler

Overview

MRCOOL DIY Select 18,000 BTU 17.3 SEER2 Ductless Mini Split & Heat Pump with 11.5 ft. DIY Line set 230V – Black Air Handler

Professional heating and cooling without the cost of professional installation. The MRCOOL DIY Select 18k BTU Single-Zone Mini-Split Heat Pump delivers dependable year-round comfort for open living areas, large bedrooms, finished basements, home offices, and other spaces up to 800 sq. ft.

With efficient inverter performance, quiet operation, smart controls, and an included pre-charged Quick Connect® line set, this system is designed for straightforward homeowner installation. Mount the units, connect the line set, provide power, and enjoy convenient app-controlled comfort without vacuum pumps, refrigerant gauges, or hiring an HVAC contractor.

• System Capacity: Delivers 18,000 BTU of heating and 17,000 BTU of cooling for spaces up to 800 sq. ft. Efficiency ratings of 17.3 SEER2 and 8.5 HSPF2-4 help provide reliable year-round comfort while keeping energy use under control.
• DIY Quick Connect® Line Set (11.5 ft.): Includes an 11.5 ft. factory pre-charged line set with R-454B refrigerant and sealed Quick Connect® fittings. No vacuum pump, manifold gauges, or refrigerant handling is required. Optional 16 ft., 25 ft., 35 ft., and 50 ft. line-set lengths are available separately.
• Inverter Technology: The variable-speed compressor continuously adjusts output based on the space’s actual demand, helping reduce energy consumption and maintain more consistent temperatures without frequent on-and-off cycling.
• Ultra-Quiet Performance: Indoor sound levels reach as low as 18.5 dB(A) in Sleep mode, making this system a strong choice for bedrooms, offices, and other spaces where quiet operation matters.
• Smart Control via MRCOOL® Comfort App: Adjust temperatures, switch operating modes, create schedules, and manage the system remotely through the MRCOOL® Comfort App. Voice control is also supported through Amazon Alexa and Google Assistant.
• Future-Ready Refrigerant: Uses R-454B, a next-generation refrigerant with a lower global-warming potential than older refrigerants, helping reduce environmental impact while meeting updated industry requirements.
• Warranty and Care Program Coverage: Backed by a 2-year compressor warranty and a 1-year parts warranty.

Specifications

Capacity & Performance

Dimensions & Weight

Electrical Requirements

Refrigerant & Piping

Features

Certifications

Warranty

Documents

BROCHURE

INSTALL MANUAL

REMOTE MANUAL

SERVICE MANUAL

WARRANTY DOC

AHRI CERTS

ENERGY GUIDE CERTS

Whats in the Box

• 18,000 BTU Indoor Air Handler Black

• 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