MRCOOL DIY 5th Gen Multi-Zone 5-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
SKU: 85440928222

MRCOOL DIY 5th Gen Multi-Zone 5-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 9K + 12K) 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 + 9K + 12K) 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 + 9K + 12K 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 + 9K + 12K – 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 + 9K + 12K is ideal for homeowners looking to efficiently cool and heat five rooms of varying sizes. The four 9K air handlers each cover up to 375 sq ft, while the 12K unit handles up to 550 sq ft—perfect for bedrooms, offices, and large 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 + 9K + 12K) 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 + 9K + 12K 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 + 9K + 12K 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
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 85440928222

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MVLA
San Leandro, US
★★★★★ 1
Strong irritating scent
Strong perfume scent that triggered my allergies. Why would a product designed for sensitive skin have fragrance added? My dermatologist had provided me some samples from Avene that were unscented and worked great, but this product is unusable for me if it's perfumed.
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Reviewed in the United States on January 7, 2026
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Audra K
Bozeman, US
★★★★★ 5
Holy Grail Moisturizer for Rosacea
Style: Restorative Protective Cream-3.3 Fl Oz
In seeing so many negative reviews I felt compelled to weigh in as this is my favorite moisturizer. I have very dry, menopausal skin. Additionally, I have rosacea which seems to have been a nice gift from said menopause (you can only laugh, right?). It's very common for those of us in our 50's to have a compromised skin barrier and when an issue like rosacea is present, even more so. Because of all this my skin is very intolerant to most moisturizers and nearly all actives (over the last few years I've had to discontinue my retinols and chemical exfoliators). While ingredients like ALA's, petrolatum, mineral oil, parafin/bees wax, and lanolin are well tolerated and known to be quite soothing, they don't hydrate very well as they are more occlusive than moisturizing. Enter this product. Magically, it does both! It's marketed as a protective cream, which again implies occlusive, but it penetrates like no other. Gone is the tight, dry feeling that persisted even when I had a heavy layer of product on my skin (my previous moisturizer was Eucerin Original Healing Cream -- which still has its uses -- because it was the only thing I could put on my skin outside of squalane oil during a flare). Now, no topical can cure rosacea. However, the right product can calm the skin, repair the damaged lipid barrier, and improve its appearance. This moisturizer does just that and it's become my holy grail. Since starting this I've also added in the Cicalfate Serum which has only aided in repairing my skin. Another Avene product that works great for me is the XeraCalm Balm which helps with itching. I use all three of these daily and they've really helped fix the secondary issues that come with rosacea. As for the complaints about it being greasy or too heavy. I can see this not working for people with normal or oily skin (or perhaps only in moderation). But my skin loves the heavier weight and because one of the ways I soothe a flare is to keep a tiny mister bottle on hand and repeatedly spray my face so I have to guard against the drying effects of evaporation. These products are so lipid heavy that I can wet my face all day long without worrying about that, though I do reapply throughout the day. As for the watery consistency issue, I haven't had that problem but it does caution on the packaging not to expose the product to temperatures below 41 degrees F (5 C). I suspect that if it gets too cold either because of the weather or because of whatever warehouse it sat in during transit it will separate. Maybe open the package and before squeezing some out look to see if it has split and then shake it up/message the tube. So, if you have skin like mine don't hesitate to try this product. I'm leaving this absurdly long review for my struggling brothers and sisters out there with rosacea in hopes that it provides some relief! Happy moisturizing, internet strangers. ;)
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Reviewed in the United States on July 18, 2025
T
Verified Purchase
Tobyizme
San Leandro, US
★★★★★ 4
Possible solution to seperation
Style: Restorative Protective Cream-1.3 Fl Oz
I love this product so much, but, like everyone else the water HEAVILY separated. A lot of water just shot out immediately and as i've used the cream it has felt more and more thick bc of that, shaking the tube or not. POSSIBLE SOLUTION: I actually think the company could salvage this problem by upgrading packaging to a Cosmetic JAR and then customers could take a toothpick and stir if separation has occurred by the time of purchase. I hope to try this with my next tube, just toothpaste squeezed everything out into a nice cosmetic jar and stir the water back into the product. This is such a simple solution that could really solve the product waste. This refreshes my skin, doesn't break me out, and is lovely. I break out so easily, and being middle aged my skin really requires a dense help with moisture. <3
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Reviewed in the United States on April 22, 2026
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Tara Tadema
West Palm Beach, US
★★★★★ 5
Ordered in spring/summer and it arrived separated too BUT...
Style: Restorative Protective Cream-1.3 Fl Oz
Ok, So I heard great things about this cream and decided to order. I ordered on May 28th and I live on the Gulf Coast of Texas and it is in the low 90s right now. I was worried mine would arrived separated like many others claimed to have gotten theirs, and sadly it did. Warm weather or not, blue water shot out of the tube the minute I squeezed it. Luckily, I read Mia P's review and submerged my tube in warm water (hot water actually straight out of my instant hot water faucet). I left it for about 5 minutes then shook it vigoroously. It seemed to help but was still a bit wonky so I repeated the process again and success! My tube is totally fine now and comes out in a thick, rich, emollient cream as it is supposed to. I will update my review after I use it more but so far I love the way it feels on the skin. It is very thick but spreads nicely and completely absorbs into the skin and leaves no greasy residue which is a big deal because I have oily skin. I purchased this to help with my Retin A uglies (I actually am using Musely with .05% tretinoin) and am hoping it helps with the redness and peeling I am having. I will update my review once I've used it for a while but wanted to post this review as I saw so many people complaining about the separating and just thought I'd mention that you can fix this issue if you have it (and there is a good likely hood that you will). Update: I've been using this for a week now and I am absolutely in love with this cream! It is the most hydrating and healing cream I've ever used. Usually, thicker face creams like this would cause issues for me with acne or clogged pores as I do have oily skin that can break out if I use products with occlusive ingredients, but this one does not. In fact, my skin has never looked better! This is a must-have if you are using Retin-A/Tretinoin and going through the red/peely phase with your skin. The separation that occurred when I first received it has not been a problem and the cream is staying thick and free from any strange liquidy issues after I put it in hot water as mentioned in the first part of my review.
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Reviewed in the United States on May 28, 2023
H
Verified Purchase
hellsbellstrudy
Dallas, US
★★★★★ 5
Saved My Skin and Healed My Eczema
Style: Restorative Protective Cream-1.3 Fl Oz, Style: Restorative Protective Cream-1.3 Fl Oz
I was having the worst skin winter of my life. I am hypersensitive and my skin started rejecting an expensive line I had used for many years (EL). My skin wasn’t healing even just using AQ balm on it and occasionally steroids when it was extra bad, and the pronounced eczema on my eyelids and neck for months was making me miserable and gross looking. I started researching brands I hadn’t tried for super sensitive skin and saw recommendations for Avene. We were leaving on a vacation and I was desperate to feel better so I ordered this and the matching serum. I started with only this cream and overnight I saw my skin start to heal. Within a few days it was like the last few months never happened. I carefully added the serum and had no issues. I used only these two products for the month I was gone and had glowing skin the whole time. This is thicker than a normal lotion since it is made to protect your skin but if you let it warm up a few seconds it smoothes easily. This will definitely remain a staple in my skin arsenal and I can’t thank you enough for making an actually gentle but effective product! This picture is two weeks after starting the product, smooth skin and confident to take selfies!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026

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