MRCOOL | DIY Mini Split - 18,000 BTU 2 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 25 and 50 ft. Install Kit | DIYM218HPC00C10

4th Generation MRCOOL DIY Mini Split System

Overview

The 4th Generation MRCOOL DIY Mini Split System provides an all-in-one solution for heating and cooling your home, office, or other spaces. The package includes an 18,000 BTU Multi-Zone Condenser, two 9,000 BTU Ceiling Cassette Air Handlers, along with a remote, pre-charged linesets, and communication wires for each air handler. The most notable feature is its user-friendly installation process, allowing you to set it up without the need for a professional HVAC technician or specialized equipment.

Benefits

• All-in-one heating and cooling for homes, offices, or other spaces.
• DIY installation—no professional HVAC technician required.
• Includes remote, pre-charged linesets, and communication wires for each air handler.
• 2-zone setup with an 18K BTU condenser and two 9K indoor units for flexible coverage.
• High efficiency SEER2 rating (21.2) with potential energy savings and tax rebates.
• MRCOOL Care program may extend the compressor warranty to lifetime when registered.

Features

• System Components:
  • MRCOOL DIY Multi-Zone 2-Zone 18K BTU Condenser (4th Gen Series, DIY-MULTI2-18HP230C)
  • MRCOOL DIY Series 9K BTU Ceiling Cassette Air Handlers (DIYCASSETTE09HP-230C25) — 2 units
  • MRCOOL 25ft 1/4 x 1/2 Pre-Charged Lineset (DIY25-1412) — suitable for DIY 9K, 12K & 18K indoor units
  • MRCOOL 50ft 1/4 x 1/2 Pre-Charged Lineset (DIY50-1412C)
  • Remote and communication wires for each air handler
• High efficiency: Condenser with SEER2 of 21.2.
• Operating in extreme conditions: heating down to -13°F.
• Warranty basics: 7-year compressor, 5-year parts. MRCOOL Care can extend compressor warranty to lifetime with registration.
• Air handler coverage: each ceiling cassette serves roughly 180–375 square feet.
• Multiple modes: COOL, HEAT, AUTO, DRY, and SLEEP.
• Sleek, low-profile design for discreet installation.
• Easy installation: designed for mounting between joists on 16" centers, including pre-manufactured I-joists.
• Maintenance: Elevation function lowers the filter panel for easier access.
• Pre-charged linesets: factory-filled with the correct amount of R-410A refrigerant for DIY setup.

Specifications

Condenser

Air Handler 9K BTU

Line Set

Line Set

Information and Guides

Installation Manual
Product Brochure
Performance Specifications
Warranty
Energy Guide
AHRI Certificate