MRCOOL DIY Mini-Split Series 4th Generation 48,000 BTU 4-Zone Wall Mounted 9K+12K+12K+12K Heat Pump System

MRCOOL SKU: DIY-MULTI5-48HP230C,DIY-09-HP-WMAH-230C25,3xDIY-12-HP-WMAH-230C25,4xDIY25-1412

MRCOOL DIY Mini-Split Series 4th Generation 48,000 BTU 4-Zone Wall Mounted 9K+12K+12K+12K Heat Pump System

  • Delivers up to 20.5 cooling and 11 heating efficiency.
  • Includes a 48000 BTU outdoor unit, four wall-mounted indoor units, four wireless remote controls, and four 25' pre-charged linesets.
  • Designed to heat and cool four separate rooms up to 400 sq. ft., 550 sq. ft., 550 sq. ft., and 550 sq. ft.
  • Pre-charged linesets allow customers to install this ductless system without special tools, equipment, or training.

Save $1,094.00
MRCOOLSKU: DIY-MULTI5-48HP230C,DIY-09-HP-WMAH-230C25,3xDIY-12-HP-WMAH-230C25,4xDIY25-1412

Ready to Ship - Average Delivery Time of 1.85 Days
Retail price:
Sale price$5,998.00 USD Regular price$7,092.00 USD


The MRCOOL DIY mini-split system is the only whole-home mini-split solution a customer can install themselves. This quad-zone heat pump system can handle extreme ambient temperatures from 5° for cooling and heating. Both outdoor and indoor units come pre-charged with R-410A refrigerant. Each wall-mounted indoor unit also comes with a wireless remote control and a 25' lineset.


  • Gold Fin® condenser to resist long term corrosion
  • DIYPro™ cable eliminates the need for an electrical conduit providing higher mechanical protection and durability
  • Remote with Follow Me® functionality to track air temperature more accurately and ensure maximum comfort
  • Prevents damage to the compressor with leakage detection
  • Auto restart after a power outage
  • Supports Google Assistant and Amazon Alexa out of the box
  • Smartphone app to control the system from anywhere with an Apple or Android device and an internet connection

HVAC professionals selected these components to maximize their performance and efficiency.

This unit’s AHRI Certified Reference Number is 208552972.


This system comes with a 5-year parts, 7-year compressor, and 1-year remote warranty when registered with the manufacturer.


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