MRCOOL DIY 5th Gen 55,000 BTU 3-Zone Ductless Mini Split Air Conditioner and Heat Pump with 9K+9K+36K BTU Wall Mount Indoor Units

MRCOOL DIY 5th Gen 55,000 BTU 3-Zone Ductless Mini Split Air Conditioner and Heat Pump with 9K+9K+36K BTU Wall Mount Indoor Units

SKU: DIYM355HPW09D00

Sale price$6,879.00 Regular price$8,949.00


Line Set Length: 16 Ft. + 16 Ft. + 16 Ft.

In Stock Estimated delivery: Jul 27th-5th
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Package Overview

The MRCOOL® DIY® 55,000 BTU Multi-Zone Ductless Mini Split System delivers efficient heating and cooling for up to 2350 sq. ft., using three indoor air handlers for independent comfort in multiple rooms. Ideal for bedrooms, offices, or guest rooms, this system allows you to customize temperatures in each space while enjoying the convenience of a single outdoor condenser. Designed for true DIY installation, it features pre-charged Quick Connect® line sets and includes a remote for easy, flexible temperature control.

Built for energy efficiency and everyday comfort, the system uses eco-friendly R-454B refrigerant and supports smart app and voice control for seamless operation. Quiet performance, smart comfort features, and strong warranty coverage make this system a reliable, long-term solution for whole-home comfort.

  • 55,000 BTU outdoor condenser with three indoor air handlers
  • Recommended coverage: up to 2350 sq. ft. total
  • Multi-zone system with independent room temperature control
  • DIY installation with pre-charged Quick Connect® line sets
  • Smart Wi-Fi control via MRCOOL® SmartHVAC app
  • Voice control compatible with Amazon Alexa & Google Assistant
  • Quiet operation for everyday comfort
  • Remote control included
  • Strong warranty coverage for long-term peace of mind

Package Includes:

Description
Product Specs
Manuals & Guides

Our new 5th Generation MRCOOL® DIY® 55k BTU Multi-Zone Ductless Mini-Split Condenser is one of the most efficient and innovative units in the industry, and we’re excited to finally share it with you! On top of saving time and money because you won’t need an HVAC professional, this system will give you a good sense of accomplishment because you’ll have installed it yourself! The whole family will be able to enjoy the comfort of this condenser, because it can heat and cool up to 6 different spaces that equal up to 2290 sq. ft., giving you the ability to heat and cool an entire home to your exact specifications using a single MRCOOL® system.

The system’s patented pre-charged Quick-Connect® line sets essentially fast-forward the installation of this system, enabling you to skip the evacuation and charging steps and simplifying the entire process. We utilize new R-454B refrigerant in these line sets, which is a much more environmentally friendly and efficient choice. Features like these assist this unit in achieving its impressive SEER2 of 22, and its HSPF2-4 of 10.6, both of which signify that this system will help you save money throughout the entire time you use it. Once you install this condenser, you’ll be met with a variety of features to help you control your comfort.

One of these features is the Smart HVAC app, available on Apple and Android, that allows you to operate your system from the convenience of your phone. Set schedules, manage different modes, monitor energy consumption, and more all without having to leave the couch! You can also set up voice control through Amazon Alexa or Google Home, meaning you can control your comfort without moving a finger. This system ensures you’ll be enjoying ultimate convenience and superior comfort. The warranty for this unit is one of the best in the industry, and we’re proud to have your back. You can enjoy the peace of mind of a 5 year parts warranty, a 7 year compressor warranty, and, once you enroll in the MRCOOL® Care Program, a Limited Lifetime Replacement warranty. If you need perfect comfort but don’t want to break the bank, this MRCOOL® DIY® condenser is your answer!

Features

  • Intertek listed 5031495
  • Easy DIY installation
  • Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
  • Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
  • The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.
DIMENSIONS & WEIGHT
Dimensions 16.34" D x 52.48" H x 37.48" W
GENERAL INFORMATION
Color White
Inverter DC
Quiet Mode Yes
Contans Chemicals Yes
CAPACITY & PERFORMANCE
SEER2 22
EER2 12
HSPF2-4 10.6
HSPF2-5 8.5
Tonnage 4.6
Cooling Capacity (BTU) 47000
Heating Capacity (BTU) 55000
Cycle 60
Zone Capacity 6
COMPRESSOR & MOTORS
Compressor Motor Type Rotary
NOISE LEVELS
Decibel Rating (DBA) 64
ELECTRICAL REQUIREMENTS
Voltage (V) 208/230
Phase 1
Max Fuse Breaker (A) 45
Min Circuit Ampacity (A) 43
REFRIGERANT & PIPING
Refrigerant Type R-454B
Refrigerant Volume (OZ) 151.68
Line Set Length 25
Max Lineset Length (FT) 221.4
Liquid LIne Size 1/4
Suctio Line Size (3/8 X4) (1/2 X2)
FILTER & HEATING
Auxiliary Heater Included No
Auxiliary Heater Available No
CONTROLS & CONNECTIVITY
Fan Only Option Yes
Auto Cool Yes
WIFI Compatibility Yes
APP Compatibility Yes
Works with IOS Yes
Works with Android Yes
SAFETY
UL Listed Yes
ETL Listed Yes
Energy Star Certified Yes
AHRI Certified Yes
Has Batteries Yes
Contains Electronics Yes
Contains Aerosol Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes
WARRANTY
Registered Warranty Extended Limited Lifetime*
Base Parts Warranty 5
Base Compressor Warranty 7
Description
Product Specs
Manuals & Guides

The 5th Generation MRCOOL® DIY® 9K BTU 22.5 SEER Ductless Mini-Split Heat Pump is a highly efficient and powerful solution for heating and cooling areas up to 400 sq. ft. Designed specifically for easy DIY installation, this system removes the need for specialized tools or professional help, allowing for a quick, hassle-free, and budget-friendly setup. One of its most convenient features is the pre-charged 25-foot DIY® QuickConnect® line set, which comes filled with R-454B refrigerant. This eliminates the need for vacuuming, reducing both installation time and labor costs.

Additionally, the DIYPRO® cable replaces the need for electrical conduit, enhancing durability and protection against outdoor elements and wildlife. With multiple control options, adjusting your system is effortless. You can operate it using the wireless remote, the SmartHVAC app for Apple and Android devices, or voice commands via Amazon Alexa and Google Assistant. The Follow Me function enhances comfort by adjusting airflow based on the remote’s location, ensuring even temperature distribution. Dry Mode also helps regulate humidity, keeping indoor conditions comfortable.

Built for long-term durability, the Gold Fin® Condenser offers superior corrosion resistance, making it ideal for coastal environments. Supported by industry-leading warranties—including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty—this MRCOOL® DIY® system delivers reliable, year-round climate control with innovative features and easy installation.

Features

  • Intertek listed 5031495
  • Easy DIY installation
  • Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
  • Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
  • The MRCOOL® Smart HVAC Controller® Module and App fully support Google
  • Assistant & Amazon Alexa out of the box.
DIMENSIONS & WEIGHT
Dimensions 7.44" D x 11.69" H x 31.57" W
GENERAL INFORMATION
Mount Type Wall
Color White
Max Coverage Area 400 sqft
Oscillation Yes
Quiet Mode Yes
CAPACITY & PERFORMANCE
Cycle 60
ELECTRICAL REQUIREMENTS
Voltage (V) 208/230
Phase 1
FILTER & HEATING
Filter Type Reusable
Auxiliary Heater Included No
Auxiliary Heater Available No
CONTROLS & CONNECTIVITY
Fan Only Option Yes
Auto Cool Yes
WIFI Compatibility Yes
APP Compatibility Yes
Works with IOS Yes
Works with Android Yes
Remote Control Included Yes
SAFETY
UL Listed Yes
ETL Listed Yes
AHRI Certified Yes
Has Batteries Yes
Contains Electronics Yes
Contains Chemicals Yes
Contains Aerosol Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes
WARRANTY
Registered Warranty Extended Limited Lifetime*
Base Parts Warranty 5
Base Compressor Warranty 7
Description
Product Specs
Manuals & Guides

The 5th Generation MRCOOL® DIY® 36k BTU Ductless Mini-Split Heat Pump is a powerful and efficient option for heating and cooling spaces up to 1,550 sq. ft. Perfect for large rooms or open areas, this system is designed for true DIY installation—no special tools or professional assistance required. It’s a fast, affordable way to upgrade your home’s comfort. The included DIYPRO® cable makes installation even easier by eliminating the need for electrical conduit, while offering added protection against outdoor elements and wildlife damage. Controlling your comfort is simple and flexible.

Use the included wireless remote, connect through the SmartHVAC app on iOS or Android, or manage the system hands-free with Amazon Alexa or Google Assistant. With the Follow Me® feature, the system senses the temperature around the remote and adjusts accordingly, providing more precise and even comfort. Dry Mode also helps by reducing humidity and improving indoor air quality. The outdoor unit includes a corrosion-resistant Gold Fin® condenser coating, ideal for homes in coastal or humid environments.

For further peace of mind, you’ll receive a 7-year compressor warranty and 5-year parts warranty. This system is also eligible for the MRCOOL® Care Program. Enjoy smart control, dependable performance, and easy installation with MRCOOL® DIY®.

Features

  • NEEP ccASHP Listed
  • Intertek listed 5031495
  • Easy DIY installation
  • Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
  • Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
  • The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.
DIMENSIONS & WEIGHT
Dimensions 11.1" D x 14.25" H x 49.57" W
Net Weight (Lbs) 48.72
Gross Depth (In) 18.74
Gross Height (In) 16.57
Gross Width (In) 53.94
Gross Weight (Lbs) 67.9
GENERAL INFORMATION
Mount Type Wall
Color White
Max Coverage Area 1550 sqft
Number of Speeds 5
Oscillation Yes
Quiet Mode Yes
CAPACITY & PERFORMANCE
Tonnage 3
Cycle 60
NOISE LEVELS
Decibel Rating Low (DBA) 27.5
Decibel Rating High (DBA) 55.5
ELECTRICAL REQUIREMENTS
Voltage (V) 208/230
Phase 1
Max Fuse Breaker (A) 15
Min Circuit Ampacity (A) 3
REFRIGERANT & PIPING
Liquid Line Size 3/8
Suction Line Size 5/8
FILTER & HEATING
Filter Type Reusable
Auxiliary Heater Included No
Auxiliary Heater Available No
CONTROLS & CONNECTIVITY
Fan Only Option Yes
Auto Cool Yes
WIFI Compatibility Yes
APP Compatibility Yes
Works with IOS Yes
Works with Android Yes
Remote Control Included Yes
SAFETY
UL Listed Yes
ETL Listed Yes
AHRI Certified Yes
Has Batteries Yes
Contains Electronics Yes
Contains Chemicals Yes
Contains Aerosol Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes
WARRANTY
Registered Warranty Extended Limited Lifetime*
Base Parts Warranty 5
Base Compressor Warranty 7
Description
Product Specs
Manuals & Guides

This remote is included with each air handler in MRCOOL's 5th Generation DIY or Advantage Mini Split Systems.

DIMENSIONS
Dimensions 2" W x 6" L x 1" H
GENERAL INFORMATION
Color White
Works with MRCOOL DIY 5th Generation Mini Splits
Restricted States
  • GU
  • PR
  • VI

Mini Split FAQ

 

What BTU rating should I choose for my air handler?

  • This depends on the coverage area/room size you are trying to heat/cool
  • An Air Handler's BTU is how powerful the fan is. A higher BTU rating will be able to heat/cool a larger area
Air Handler BTU Coverage Area/Room Size (Sq. Ft.)*
6K
Up to 200 Sq. Ft.
9K
Up to 375 Sq. Ft.
12K Up to 500 Sq. Ft.
18K Up to 750 Sq. Ft.
24k Up to 1,000 Sq. Ft.
36k Up to 1,500 Sq. Ft.

 

*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.

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