SKU: 35900304130

MRCOOL DIY 5th Gen Multi-Zone 5-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes

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Description

MRCOOL DIY 5th Gen Multi-Zone 5-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling CassettesMRCOOL DIY Multi Zone 5th Gen 55K BTU Five Zone Ductless Mini Split with Ceiling Cassettes 9K + 9K + 9K + 12K + 18K A Heating and AC System You Can Install By Yourself! MRCOOL DIY Series Ceiling Cassettes provide efficient heating and cooling while remaining out of sight and discreet, making them a perfect fit for any space. The cassette features an easy, low profile installation and can be recessed between all types of joists on 16 inch centers,

MRCOOL DIY Multi-Zone 5th Gen 55K BTU Five Zone Ductless Mini Split with Ceiling Cassettes 9K + 9K + 9K + 12K + 18K – A Heating and AC System You Can Install By Yourself!

MRCOOL DIY Series Ceiling Cassettes provide efficient heating and cooling while remaining out of sight and discreet, making them a perfect fit for any space. The cassette features an easy, low-profile installation and can be recessed between all types of joists on 16 inch centers, including pre-manufactured I-joists. This makes it a perfect option for both new construction or retrofits. It doesn’t have strict installation requirements like other ceiling cassettes, so you’re able to install it in the location that suits you best, without using ductwork or wall space. The cassette works with the MrCool® DIY® Quick Connect® line set and the No-Vac® Coupler to increase the length of the line set. Not only does the unit offer quiet operation and multiple operating modes, but it also features the Elevation function that lowers the filter panel for easy air filter maintenance. Purchases of the MrCool® DIY® Series Ceiling Cassettes are protected by a limited lifetime warranty in addition to a 7-year compressor warranty and 5-year parts warranty.

The MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU 22 SEER2 5 Zone Ductless Mini Split System - 9K + 9K + 9K + 12K + 18K is ideal for homeowners looking to efficiently cool and heat five rooms of varying sizes. The three 9K air handlers each cover up to 375 sq ft, the 12K unit up to 500 sq ft, and the 18K up to 750 sq ft—perfect for bedrooms, offices, and larger living areas. This system combines high performance and flexibility with DIY-friendly installation, so you can skip the HVAC crew and save thousands on labor. Everything is powered by a robust 55K BTU condenser, backed by a 7 Year Compressor Warranty (with optional lifetime coverage) and a 5 Year Parts Warranty.

MRCOOL DIY 5th Gen Multizone 55,000 BTU systems can support up to five indoor units—the maximum supported for this condenser.

Feel free to mix ceiling cassette air handlers and wall mounted air handlers together in a system by visiting Building Your Own Custom Mini Split System.

The MRCOOL DIY 5th Gen 5-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 12K + 18K) Ductless Mini Split System with Ceiling Cassette units are super easy to install and require no special training or expensive specialty tools. The DIY system includes Quick Connect lines that are pre-charged with eco-friendly R-454B refrigerant. Due to the Quick Connect line set, you don’t have to hire an HVAC technician to complete the install. We also have simple video instructions on how to install a DIY Multi-Zone unit yourself!

The MRCOOL DIY Multi-Zone 55,000 BTU 22 SEER2 5 Zone Ductless Mini Split System - 9K + 9K + 9K + 12K + 18K can cool through the Summer, heat through the Winter, and dehumidify through the wet seasons. Plus, you can quickly check the temperature of each room in your home from the easy-to-read digital display or from the MRCOOL Smart Controller mobile app. The display on the front of each indoor air handler unit can also display troubleshooting codes and alerts, so you are always aware of any issues with your system. Operate each unit wirelessly with either the included remote or with the MRCOOL Smart Controller app for Apple or Android devices. You also have the ability to control your mini-split unit with Amazon Alexa or Google Home.

The five MRCOOL DIY Multi-Zone air handlers included in this set provide directional control of the heated or cooled air. This distributes the air evenly so everyone in the room can stay comfortable. If you are in a situation that requires forced cooling, you can set your MRCOOL DIY System to manual with the button located on the right side of the unit under the front panel. In this emergency operation mode, you can test the cooling operation of your unit after installation or to complete a maintenance task.

In auto mode, each unit provides air for your home at your desired comfort level. Set your desired temperature, and the HVAC unit will determine how much heat or air conditioning is needed. You can also set this system to a drying function, which will continue to control the space’s air temperature while dehumidifying.

Use the sleep mode at night to save money on your utilities bills and use less energy. Sleep mode operates in an 8 hour window once turned on.

The MRCOOL DIY Multi-Zone 55,000 BTU 22 SEER2 Five-Zone Ductless Mini Split Air Conditioner System - 9K + 9K + 9K + 12K + 18K comes with many options, so you can customize your system based on your needs. Limit your energy usage and save money on your utility bill by using the system’s timer function. If your system begins to run low on refrigerant, an alert will appear on the easy-to-read display on the front of each air handler, letting you know there may be a leak. If you desire to keep a room quiet and minimize lighted alerts, you can mute each indoor unit. By muting the system, the buzzer for alerts will not sound and the LED lit display will turn off. Should the unfortunate event of a power outage occur, the MrCool system will automatically shut off and then back on with the same settings once power returns.

Easily maintain your MRCOOL DIY Multi-Zone 55,000 BTU 22 SEER2 Five-Zone Ductless Mini Split Air Conditioner Unit with alerts and reminders. Any troubleshooting codes will appear on the front display and the user manual contains an index for common codes. Air filter cleaning alerts are automatic, and you can easily keep the minimal indoor units clean with a dry or damp cloth.

Features:

  • Easy DIY® Installation

  • "Pre-charged DIY® Quick Connect Line Set"

  • Simple to Use

  • Multi-room Comfort

  • Energy Efficient DC Inverter

  • 100% Sealed System

  • Gold Fin® Condenser

  • Eco Safe R-454B Refrigerant

  • Smartphone App Controls

  • Lifetime Technical Support

  • Low Ambient Cooling

DIY OUTTASIGHT BROCHURE

MULTIZONE BROCHURE

INSTALL MANUAL

REMOTE MANUAL

WARRANTY DOC

ACCESSORY MANUAL

BRAND NAME MRCOOL
SERIES
DIY 5th gen Multi-Zone Mini-splits
MODEL
DIY-MULTI6-55HP230D-O
GTIN 840255587488
UPC 840255587488
SHORT DESCRIPTION
MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v
LONG DESCRIPTION
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. These line sets are sold separately. 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!
FEATURE LIST
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.
SEER2 22
EER2 12
HSPF2-4 10.6
HSPF2-5 8.5
TONNAGE 4.6
COOLING CAPACITY (BTU) 47000
HEATING CAPACITY (BTU) 55000
VOLTAGE (V) 208/230
PHASE 1
CYCLE 60
MAX FUSE BREAKER (A) 45
MIN CIRCUIT AMPACITY (A) 43
COLOR White
ZONE CAPACITY 6
REFRIGERANT TYPE R-454B
REFRIGERANT VOLUME (OZ) 151.68
DECIBEL RATING (DBA) 64
INVERTER DC
LINE SET LENGTH 25
MAX LINESET LENGTH (FT) 221.4
LIQUID LINE SIZE 1/4
SUCTION LINE SIZE
(3/8 X4) (1/2 X2)
COMPRESSOR MOTOR TYPE Rotary
AUXILIARY HEATER INCLUDED No
AUXILIARY HEATER AVAILABLE No
FAN ONLY OPTION Yes
QUIET MODE Yes
AUTO COOL Yes
WIFI COMPATIBILITY Yes
APP COMPATIBILITY Yes
WORKS WITH IOS Yes
WORKS WITH ANDROID Yes
UL LISTED Yes
ETL LISTED Yes
ENERGY STAR CERTIFIED Yes
AHRI CERTIFIED Yes
REGISTERED WARRANTY
Extended Limited Lifetime*
BASE PARTS WARRANTY 5
BASE COMPRESSOR WARRANTY 7
HAS BATTERIES Yes
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS AEROSOL Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
NET DEPTH (IN) 16.34
NET HEIGHT (IN) 52.48
NET WIDTH (IN) 37.48
NET WEIGHT (LBS) 245.81
GROSS DEPTH (IN) 19.49
GROSS HEIGHT (IN) 58.27
GROSS WIDTH (IN) 43.11
GROSS WEIGHT (LBS) 267.46
Shipping Notes
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  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 35900304130

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4.6 ★★★★★
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Verified Purchase
Adam C. Driver
Waukegan, US
★★★★★ 5
Must read
Format: Paperback
Impressive second book by Justin Driver.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2025
J
Verified Purchase
james p. whitters III
Birmingham, US
★★★★★ 5
Excellent!
Format: Paperback
Excellent read!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 5, 2025
B
Big Pumpkin
Houston, US
★★★★★ 1
A Disconnected and Legally Shaky Defense of Racial Preferences
Format: Paperback
While this book raises some thought-provoking points, it ultimately reads like a product of self-righteous elites disconnected from reality and from the American public. 1. Ignores public opinion. The author never acknowledges that polls consistently show Americans oppose racial preferences in college admissions. Proposition 16—which would have allowed such preferences—was defeated by a wide margin in 2020 in California, one of the nation’s most liberal states. A Brookings poll found that virtually all racial groups, including Black respondents, supported the Supreme Court’s Students for Fair Admissions (SFFA) decision. 2. Starts with a strange premise. The first chapter claims conservatives will “regret” the SFFA ruling because universities will continue racial preferences covertly. But that sidesteps the real question: why shouldn’t colleges comply with the ruling’s letter and spirit? 3. Offers dubious legal advice. In Chapter Three, the author—himself a law professor—floats risky ideas for “working around” the Supreme Court’s decision. Many of these suggestions rest on shaky legal ground, as anyone familiar with the Second Circuit’s CACAGNY v. Adams, 116 F.4th 161 (2d Cir. 2024), would recognize. 4. Ignores proportionality and real-world outcomes. The book argues for “diversity” preferences without asking how much preference is justified. In reality, Asian American applicants face steep penalties. e.g. Stanley Zhong was rejected by five University of California campuses’ Computer Science programs as an in-state applicant—shortly before Google hired him for a full-time, Ph.D.-level software engineering position. Meanwhile, UC San Diego’s own freshman math-placement data show a surge of students—mostly “underrepresented minorities” favored by UC—placed into remedial courses, some testing at a 4th-grade level. It is hard to see how admitting these students is helping them other than allowing some elites to make themselves feel good or get a promotion. If this book represents what passes for legal scholarship at Yale, the state of American legal education should worry us all.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 12, 2025
J
Jason Galbraith
Battle Creek, US
★★★★★ 5
Adherence to the Rule of Law Must Not Become a Fair Weather Sport
Format: Paperback
The memorable quotation I have used for the title of this review comes from the second chapter (I think) of "The Fall of Affirmative Action." What is actually happening in the United States is that the law is being enforced rigorously against "enemy" institutions such as those of higher learning and not at all against those with power, money, or affinity for same. The author, an African-American Yale Law professor, devotes his first chapter to the ways in which conservatives might critique the SCOTUS precedent that ended affirmative action and his second to the ways in which liberals might critique it. His most invaluable contribution to the debate is that civil rights can be advocated from an anti-classification standpoint or an anti-subordination standpoint, with anti-subordinationists on both sides of the affirmative action debate. This forced me to take perhaps a harder look at my own beliefs than most books or articles about affirmative action. African-Americans are certainly subordinated in reality by being excluded from higher education but they are subordinated mostly in the minds of white Americans by the fact that a white applicant with the same scores, extracurriculars and admission essays might not get in. That at least is the conclusion I have come to. "Students for Fair Admissions," the organization that brought down affirmative action before SCOTUS, has now sued those few elite educational institutions that DIDN'T see sharp drops in their African-American enrollment. One strongly suspects that SFFA if not the "Justices" they persuaded will be happy only with a formal quota for African-Americans which is half or less their proportion in the population of the state where the institution is located.
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Reviewed in the United States on November 4, 2025
A
Amy Sullivan
Charlottesville, US
★★★★★ 5
Provocative and fascinating read
Format: Paperback
Justin Driver's excellent book makes the case that conservatives may come to regret the Supreme Court's 2023 decision striking down affirmative action in college admissions. He argues that, rather than simply check a box to indicate their race, the decision will force non-white applicants to "perform their trauma" in application essays in ways that conservatives may find even more corrosive. And affluent non-white candidates--the people conservatives say should not be benefiting from affirmative action--will be the ones best-positioned to take advantage of the opportunity, since they are most equipped to exploit the loopholes and work-arounds that the Roberts decision created. A truly provocative read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2025

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