Product Description

MRCOOL DIY 4th Gen 48,000 BTU 2-Zone Mini Split System (18K + 36K Air Handlers)

Big Comfort, Zero Contractor Required

Take control of your climate without calling in the cavalry. This MRCOOL DIY 4th Generation Mini Split is built for ambitious homeowners who’d rather spend money on comfort—not labor fees. With 48,000 BTUs of heating and cooling power split across two zones, this system efficiently manages temps in two large spaces while keeping your installation process refreshingly simple.

Benefits

  • DIY-Friendly Setup – Skip the installer and handle it yourself (without voiding warranties or breaking a sweat).

  • Year-Round Efficiency – Heat and cool with confidence—even when temps dip to 5°F.

  • Smart Living – Control from your couch, office, or the beach with the Smart HVAC app.

  • Big Coverage – Keep up to 2,250 sq. ft. of space perfectly conditioned between both air handlers.

  • Peace of Mind – MRCOOL offers the industry’s only limited lifetime compressor warranty (yep, forever is included).

Features

  • Multi-Zone Condenser (DIY-MULTI5-48HP230C): 48K BTU capacity, 20.5 SEER efficiency, lifetime compressor warranty.

  • 18K Air Handler (DIY-18-HP-WMAH-230C25): Covers up to 750 sq. ft., multiple modes (COOL, HEAT, DRY, AUTO, SLEEP), app + remote control.

  • 36K Air Handler (DIY-36-HP-WMAH-230C25): Covers up to 1,500 sq. ft., same versatile modes, compact wall-mount design.

  • 2x 50 ft. Pre-Charged Line Sets: Preloaded with R-410A refrigerant for tool-free connections—because no one has time for complicated installs.

  • Remote Controls (2 Included): Each zone gets its own handy remote for quick adjustments.

Specifications

Condenser Specifications

 

Product Dimensions 37.48"W x 16.34"D x 52.48"H
Cooling Capacity 48,000 BTU
Heating Capacity 48,000 BTU
Zone Capacity 5
Min Ambient Cool 5F ~ 122F
Min Ambient Heat 5F ~ 75.2F
SEER 20.5
EER 11
Voltage Requires a minimum of 208V-230V/60HZ/40-60A (please check your home meets this electrical requirement prior to purchase)
Registered Warranty 7 Years Replacement on Condenser, 5 Years Parts


Air Handler 18K BTU

 

Product Dimensions 42.52"W x 8.90"D x 13.19"H
Mount Type Wall
Cooling Capacity 18,000 BTU
Heating Capacity 18,000 BTU
Registered Warranty 5 Years Parts
Modes Auto - auto selects from Cool, Heat or Fan-Only
Dry - dehumidify
Cool
Heat
Fan Only
Quiet
Sleep


Air Handler 36K BTU

 

Product Dimensions 49.57"W x 11.10"D x 14.25"H
Mount Type Wall
Cooling Capacity 36,000 BTU
Heating Capacity 36,000 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 50 Feet
Liquid Line Size 3/8"
Suction Line Size 5/8"


Line Set

 

Length 50 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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