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Description
MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (6K + 6K + 6K + 6K + 6K + 12K) 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 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 218 reviews
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Product Reviews
★★★★★ 4
"It's a promise wrapped in a threat, and she doesn’t know it" ARC
Format: Kindle
I can always count on Bella Matthew’s books to have found family, a strong FMC, delicious spice and to make me laugh & cry in the same chapter. Sweet Temptation is no exception!
Lexie & Lucky have grown up together. Lucky plays pro-football & lives with Lexie’s brother Lincoln. Lexie is back in town, needs a place to stay, insert our favorite forced proximity trope!
Lexie doesn't want a relationship, she firmly believes that's selfish because she has cystic fibrosis and doesn’t want to cause her loved ones pain someday. She’s also the first and only girl Lucky hasn’t tried to chase… There’s wonderful banter & tension and then finally we get “one night lucky.. It's a promise wrapped in a threat, and she doesn’t know it”
I loved Lexie’s mom & Lucky’s sister for standing up for their relationship & dropping the truth bombs those around them needed to hear. Lucky’s mom for telling him, grand gestures don’t mean sh*t, when you take away her right to choose what she wants. If you love banter, group texts, spice, football romance, forced proximity -- definitely recommend this book!
Can't wait to read more of this second gen.
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Reviewed in the United States on September 24, 2025
★★★★★ 5
Such a sweet story!
Format: Paperback
Ok, I’m lowkey obsessed with Lucky and Lexie! Why did I wait so long to read this?! The banter between them and all the siblings and friends had me dying! 😂 The yearning and pining these two have for each other 🥰 Lucky knew what he wanted and I loved when he finally decided to go for it! Lexie was such a warrior! I really related to her character. Having a chronic illness isn’t easy and you always wonder how it’s truly affecting those you love. The way Lucky came in and showed her that he wanted to be with her no matter what had my heart melting. I didn’t expect to feel So many emotions with this one! Cannot wait to continue the series!!
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Reviewed in the United States on May 29, 2026
★★★★★ 5
I Love Luciano “Lucky” Beneventi
Format: Kindle
Another 5 star read from this amazing author!
Man do I love going back to Kroydon Hills!
I love these characters so much! Since day one with Nat and Ryan! And to continue reading about their kids! It’s the best.
This book was heartbreaking but in a good way.
Being with some one with a sickness is not easy. It really comes down to “in sickness and in health” and lucky was there every step of the way.
Loving someone for the rest of your life.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Solid Product with Good Price`
Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited, Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited
I finally decided to use Amazon's Kindle trade-in program to trade-in my 2nd generation dinosaur Kindle for some newer tech. While my old Kindle still did work and had been a workhorse for years, the battery was not what it was, it was heavier, and the lack of back-lit light for nighttime reading was overdue for an upgrade.
This Kindle is very lightweight compared to my old Kindle, even with a case (Moko, Origami Slim Shell), which I purchased as an accessory item. It is almost as light as my Galaxy S8+. The touch screen works well, which is another feature I did not have previously. I can say my only complaint here is there is little room on the sides of the case to rest your thumbs when holding the device, which sometimes causes a page turn accidentally while reading. This normally happens when reading in bed, but it's not a huge issue.
The display is easy to read and I really like the paperwhite design of the display. Also, I very much like the device is backlit with a good range on adjusting the brightness as needed. I don't generally read outside much, so, for now, I have not encountered any issues.
I have had the device about a month and have not needed to charge it since my first charging. I usually keep it on airplane mode and the battery is going strong. Very happy with that.
The one complaint I have had with this device - and it is not the device itself, but with Amazon - the charging cable (micro-USB) lacks a power adapter enabling you to charge the device from an outlet. This was not the case with my 2nd generation Kindle as it came with the full cable and power adapter.
Then, Amazon conveniently recommends you purchase said adapter as "official OEM" adapter for Kindle devices for the whopping price of $19.99. This is a complete rip-off, in my opinion. The adapter should come with the device, but if you are going to sell it separately, you do not need to over-charge for it by this ridiculous amount. You can find another generic adapter for a reasonable price. Just be sure to make sure it matches the specs required for charging the device. Booo - bad form Amazon!
Even with the "missing" adapter, I am happy with the product and the value and price paid. I also very much recommend taking advantage of the trade-in program Amazone offers if you can. I was able to get a $5 credit for my old Kindle and 25% off toward future Kindle product. I also pulled the trigger on this sale during Prime Days so the device was further discounted. This was a great time to upgrade and save money.
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Reviewed in the United States on August 18, 2019
★★★★★ 5
Worth the money (especially if you wait for a Prime Day sale!)
Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited
I've had my paperwhite for about a month now, so I guess it's as good of time as any to properly review it.
This is my first paperwhite. I got a b&n Nook Color back in 2010 for Christmas, which has served me really well over the years. However, it reached the point recently where it wouldn't hold a charge and so I found myself in the market for a new e-reader.
I was drawn to the paperwhite because it was waterproof and would hold a long charge. I was a little leery about the black-and-white only nature of the paperwhite, especially as my previous ereader was in color, but so far it hasn't been an issue. I used to read comics on my Nook but haven't read digital comics in a few years, preferring print. This might be something someone who does read books with illustrations would want to take into consideration.
I really appreciate the long battery life of the paperwhite. I've had it for about a month and have only had to charge it once (and it had only gotten down to about 48% so I probably could have pushed it further than I did). I've been able to read several books with the battery barely being effected. The biggest draw on battery life seems to be using the store or trying to use the rudimentary Web browser.
I've been very impressed by the light, too. My Nook was impossible to read on in some lights, which hasn't been an issue at all with the paperwhite. I usually have the brightness adjusted to about the halfway point for casual reading, and brighten the screen if necessary. The brightest option COULD be a little brighter, but that's nitpicky.
The device itself is VERY lightweight and portable. I have dvd cases that weigh more. My phone certainly weighs more. It's not too big or bulky to hold; I can easily hold it with just one hand.
The only draw back I've really noticed is that the touchscreen is a little sensitive. Sometimes when I'm trying to scroll through my library, I end up selecting a title I wasn't trying to open. Other times, I might scroll through several pages by accidently hitting my thumb on the screen when holding the device. Buy this is a very minor inconvenience.
Also, I bought the option with "special offers". They in no way to impede my reading experience. The ads show up on the main screen when the device is not in use, or in a small banner along the bottom of the "home" menu. That's it. No ads popping up during your reading.
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Reviewed in the United States on August 10, 2019