Product Description

MRCOOL DIY Multi-Zone 4th Gen Mini Split System

Overview

This 4th Generation MRCOOL Mini Split provides an all-in-one solution to heat and cool two spaces. It includes the DIY 18,000 BTU Multi-Zone Condenser, two 9,000 BTU wall-mounted air handlers, two remotes, and 16 ft. and 35 ft. installation kits. The standout feature is a true DIY installation—set it up yourself without special tools or pricey gear. With built-in Wi?Fi, MRCOOL DIY Multi is easy to install and flexible enough for most spaces.

Benefits

  • DIY installation saves time and money—no certified technician required.
  • Wi?Fi control via the Smart HVAC app on iOS or Android.
  • Two-zone capability in one compact condenser for two separate spaces.
  • Energy efficiency up to 21 SEER when paired with select MRCOOL air handlers.
  • Operates in temperatures as low as 5°F.
  • Limited lifetime compressor warranty through the MRCOOL Care program (registration required).

Features

  • Condenser: DIY Multi-Zone 2-Zone, 18,000 BTU, 4th Gen Series (DIY-MULTI2-18HP230C).
  • Air Handlers: Two MRCOOL DIY 4th Generation 9K BTU Wall Mount Air Handlers, 230V, Enhanced WiFi (DIY-09-HP-WMAH-230C25).
  • Line Sets: 16 ft. (DIY16-1412) and 35 ft. (DIY35-1412C) pre-charged with R-410A; compatible with 9K, 12K & 18K indoor units.
  • Coverage: Each 9K BTU air handler covers up to 375 sq. ft.
  • Operation modes: COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
  • Smart control: Manage via Apple or Android devices through the Smart HVAC app.
  • Installation: Compact, lightweight air handlers with mounting plate for easy wall mounting.
  • Remote: Includes remotes for each air handler (plus optional holder).
  • DIY friendly: No certified technician required for installation.

Specifications

Condenser Specifications

 

Product Dimensions 35.04"W x 13.46"D x 26.50"H
Cooling Capacity 18,000 BTU
Heating Capacity 19,000 BTU
Zone Capacity 2
Min Ambient Cool 5F ~ 122F
Min Ambient Heat -13F ~ 75.2F
SEER 21
EER 12.5
Voltage Requires a minimum of 208V-230V/60HZ/18-25A (please check your home meets this electrical requirement prior to purchase)
Registered Warranty 7 Years Replacement on Condenser, 5 Years Parts


Air Handler 9K BTU

 

Product Dimensions 31.57"W x 7.44"D x 11.69"H
Mount Type Wall
Cooling Capacity 9,000 BTU
Heating Capacity 9,000 BTU
Registered Warranty 5 Years Parts
Modes Auto - auto selects from Cool, Heat or Fan-Only
Dry - dehumidify
Cool
Heat
Fan Only
Quiet
Sleep


Line Set

 

Length 16 Feet
Liquid Line Size 1/4"
Suction Line Size 1/2"


Line Set

 

Length 35 Feet
Liquid Line Size 1/4"
Suction Line Size 1/2"

Information and Guides

Installation Manual
Product Brochure
Performance Specifications
Warranty
Energy Guide
AHRI Certificate

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