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Description
MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (6K + 6K + 9K + 12K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling CassettesThe MRCOOL DIY 5th Gen 55,000 BTU 6 Zone Ceiling Cassette Mini Split System is the largest capacity DIY unit available, capable of heating and cooling up to six individual zones with precision and efficiency. Designed for powerful whole home performance, it combines a high output condenser with your choice of low profile ceiling cassette air handlers all with smart control and DIY installation in mind. This system supports any combination of 6K, 9K,
The MRCOOL DIY 5th Gen 55,000 BTU 6-Zone Ceiling Cassette Mini-Split System is the largest capacity DIY unit available, capable of heating and cooling up to six individual zones with precision and efficiency. Designed for powerful whole-home performance, it combines a high-output condenser with your choice of low-profile ceiling cassette air handlers — all with smart control and DIY installation in mind.
This system supports any combination of 6K, 9K, 12K, and 18K ceiling cassettes, allowing full customization for bedrooms, living rooms, garages, offices, or large open spaces. With a 21.5 SEER2 rating, it maximizes efficiency while delivering serious comfort even in extreme weather conditions.
Whether you’re retrofitting an older home or building out a modern multi-room system, this DIY 6-zone setup offers unmatched versatility — without the need for a pro HVAC installer.
Key Features:
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Supports six indoor zones with a single 55K condenser
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Compatible with 6K, 9K, 12K, and 18K ceiling cassette units
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21.5 SEER2 energy efficiency for lower utility bills
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Ideal for large homes, offices, shops, or multi-room spaces
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Flush-mounted ceiling cassettes blend seamlessly into any décor
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DIY installation with included quick-connect fittings
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Operates in extreme temperatures: heats to -13°F, cools to 122°F
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App, Alexa, and Google Assistant smart control integration
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Corrosion-resistant Gold Fin® condenser coating
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Backed by 5-year parts and 7-year compressor warranty
| 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 |
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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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4.2 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 4
An important contribution
The historiography of secession is a complex one. For much of the last century there had been a tendency for historians to underplay the importance of slavery as a cause of the American civil war. Certaintly neo-Confederate apologists have sought to euphemize the cause of the conflict to an issue over tariffs, to matters of states rights, or to the "extremism" of the abolitionists. It is quite clear that these excuses will not survive a reading of this book. Sinha clearly shows, in her examination of South Carolina secessionism from nullifaction to fort Sumter, that slavery was the essence of its concerns. To show this she looks at the nullification crisis, the Mexican war, the Compromise of 1850, the South Carolinian movement to reopen the slave trade, and the secession crisis, based on exhaustive research of no less than 137 sets of private papers and diaries.
But Sinha wishes not simply to refute the academically unimportant group of neo-Calhounites. She wishes to argue something broader. The South Carolinian defense of slavery was not, as many serious historians suggest today, simply the working out of the Southern American view of liberty. Increasingly, Sinha argues, South Carolina pro-slavery thought was not the expression of Southern Republicanism, but increasingly its very negation. It was not a coincidence that secessionism was strongest in South Carolina, the only state by 1832 where presidential electors and the governor were not popularly elected, where the legislature was crudely malapportioned, and where local offices were limited by the state government. It was also not a coincidence that slaves were a majority of South Carolinians, and slaveholders nearly a majority of South Carolinian whites. And it certainly was not a coincidence that non-slaveholders were noticeably less enthusiastic for nullification, secession in 1851 and secession in 1861.
But although Southern nationalist discourse was clearly elitist and pro-slavery, does Sinha show that it was counter-revolutionary? A certain opposition to democracy was evident after all in the many, perhaps most, of the founding fathers. But as Sinha points out leading Carolinians like Calhoun, Senator James Chesnut and the creepy, incestuous James Hammond all sneered at the Declaration of Independence. She quotes one bravado warping PatricK Henry to declare "Give me Slavery or give me death." Notwithstanding the views of some historians to the contrary the South Carolinians criticized the North less for its oppression of wage laborers than the possiblity that those laborers could vote themselves into power. They did not condemn Lincoln as an intolerant Protestant but as a dangerous socialist and feminist. Moreover, they were not slow to raise the Nativist card against the immigrants who were bolstering the North's population. Calhoun's idea of a concurrent majority was not a thoughtful protection of minority rights, but a way to prevent one minority, his own, from ever being outvoted. Once the Confederacy was set up the elite dispensed with political parties. Looking at South Carolina they also began to dispense with competitive elections, while its ruthless elite certainly did not act sentimentally (or even decently) towards opinions on slavery.
In conclusion there have been many frauds and bullies in American political life: the Nixons, the Hoovers, the McCarthys, the Tillmans and the Bilbos. But much of their malignancy was purely personal and they never threatened the core ideals of the republic. Calhoun was different, very different. Extremely intelligent, he was also utterly principled, and absolutely ruthless in carrying out that one principle. The problem was that the principle, despite all the complications of honor and paternalism, was slavery. More so than anyone else, Calhoun was the greatest enemy of liberty and freedom the United States ever had. Sinha's book is an important contribution to understanding that.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2000
★★★★★ 5
Great information on an understudied area
Format: Paperback
Thanks for an insight to the other side. Students of Southern history -- this is a must read. Pick it up
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 1, 2013
★★★★★ 5
good deal
Format: Paperback
It was the book my Daughter needed for a course...saved money
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Reviewed in the United States on October 8, 2015
★★★★★ 5
Wow, this book was so useful
Format: Paperback
This book is so practical, so clearly laid out, so full of useful things. I am honestly in awe that someone took the time to make a book that is this helpful-- I can't imagine how many hours it must have taken to distill all of this knowledge and then present it in a readable way.
I am a geologist but not a petrologist, and I had to become a petrologist in a real hurry for a project that I was doing. I was really stumbling through the dark there until this book turned on the light. Never knew I could feel so grateful and indebted to a book about geochemistry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 2, 2021
★★★★★ 5
Excelente guía
Format: Paperback
El contenido y la presentación es excelente para mi trabajo, cubre tanto geoquímica de rocas duras como geoquímica sedimentaria, para mi es muy util este último tema y como utilizar la data para interpretar cambios y correlacionar
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2022
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