SKU: 17057199600

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (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 4-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling CassettesMRCOOL DIY Multi Zone 5th Gen 55K BTU Four Zone Ductless Mini Split with Ceiling Cassettes 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 center including

MRCOOL DIY Multi Zone 5th Gen 55K BTU Four Zone Ductless Mini Split with Ceiling Cassettes 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 center 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 9K and 12K BTU 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 4 Zone Ductless Mini Split System - 9K + 9K + 9K + 12K gives you everything you need to heat and cool four separate spaces with confidence and efficiency. Designed for easy installation without professional tools or training, this DIY system saves you time and money. It includes three 9,000 BTU air handlers and one 12,000 BTU air handler—great for rooms around 375 and 500 square feet respectively. With its built-in heat pump, this system provides reliable year-round comfort and comes backed by a 7 Year Compressor Warranty (plus optional limited lifetime coverage) and a 5 Year Parts Warranty.

MRCOOL DIY 5th Gen Multizone 55,000 BTU systems can support up to six indoor units, giving you flexibility for expansion.

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 4-Zone 55,000 BTU 22 SEER2 (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 4 Zone Ductless Mini Split System - 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 four 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 Four-Zone Ductless Mini Split Air Conditioner System - 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 Four-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: 17057199600

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4.1 ★★★★★
Based on 30 reviews
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Product Reviews
G
Verified Purchase
GMTTD
Natrona Heights, US
★★★★★ 5
Great product
Style: AVR-S770H
I have owned several $1000.00 plus theater systems of 7.1(2) channels and I have never heard my speakers put out the sound like the Denon does. I would never change systems again unless Denon stops producing this product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
J
Verified Purchase
John E. Holiday
Waukegan, US
★★★★★ 5
AVR-S770H - My first AVR and my first Denon - works great with Directv and Fire Stick
Style: AVR-S770H
This review is for the Denon AVR-S770H. I was apprehensive about buying an AVR for my main TV. I've always used a soundbar and was happy with the results. I assumed that adding an AVR would make things finicky and complicated. I'm happy to say, that is not true. This Denon has been fabulous. My requirements for a home theater receiver were/are the following: 1) Ease of use and NO additional remotes to our current set-up (family needs, I'm not a bachelor!) 2) I need the ability to connect 2 zones: the TV room and I have a pair of outdoor speakers on the patio First, as to the remote situation, I use Directv and I use an Amazon Fire Stick 4k. My old set-up was super simple. I picked up the Directv remote and hit Power. That turned on the TV, the Directv box, and the soundbar (since it was connected to the TV ARC port). Simple. If I wanted to change over to the Fire Stick, I simply used the same Directv remote to change the input and then used the Fire Stick remote from there. I'm happy to say the Denon has made things even simpler. Not only does the Directv remote turn on/off the TV, Direct box, and the Denon receiver but now I don't even have to bother switching inputs. If I pick up the Fire Stick remote and hit the Home button, the Denon senses that and immediately switches over. Likewise, if I pick up the Directv remote and hit a button, the Denon will switch back over to Directv. So that is an actual improvement. By the way, in order to get the Directv remote to turn off the Denon, don't worry about trying to program the remote via the Directv menu (I tried all the codes and failed). Instead, go to the Denon setting menu. Choose Setup> Video> HDMI Setup. Change the "Power Off Control" to "Video" or "All". Now the Denon will turn on/off when the TV does (using the Directv remote). My second concern was operating a second set of speakers via Zone 2. That also works perfectly. Now when I step outside to sit on the patio, I simply hit the Zone 2 button on the front of the Denon. I can use my phone to play music via the Denon's built-in Bluetooth. Some users need to be aware: in order to operate Zone 2, the receiver needs to be switched from 7.2 channel to 5.1 + Zone 2. That's perfectly acceptable for me since my TV has only front L & R speakers and a subwoofer. So I'm not even using the full capabilities of the 5.1. If you need 7.2 and a second zone, you need to find a different AVR. In sum, I bought this Denon with some trepidation and thought maybe I'd have to return it. Instead, it does everything I want and then some. Of course, it sounds great too. I'm so glad I switched from the soundbar.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2025
R
Verified Purchase
Ricus
San Leandro, US
★★★★★ 5
Wow!
Style: AVR-S770H
I had an Onkyo 5100 for a few years and experienced lots of issues with the UI over HDMI but after many many firmware updates they seemed to have resolved that and it had a great sound. Recently however the receiver started to turn itself on for no reason and I felt that it was a fire hazard. I bought this unit as a replacement and so far it is flawless. I believe that this receiver sounds even better and hopefully more reliable. The Atmos sound is excellent.
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Reviewed in the United States on October 25, 2024
P
Verified Purchase
primem0ver
Los Angeles, US
★★★★★ 1
A firmware nightmare
Style: AVR-S770H
This piece of garbage has a mind of its own.  I bought it because I needed an HDR friendly device and it was highly recommended on more than one receiver list and went for a decent price.  In strictly audio terms it is a nice machine, though I wouldn't say its features are extensive.  However, IT decides when it wants to do things.  It randomly goes to zero volume without me touching anything (around once a week on average).  It randomly decides not to give me a picture when I turn it on.  This has improved since the last firmware update.  We are down from almost 20% of the time to slightly less than 10%.  Yes.  You read that correctly.  I have to turn it off and then on again, sometimes more than once before anything besides a brand name will show up on my TV.  It is supposed to have a screensaver but that never comes up unless they consider the stationary brand name a screen saver.  I have owned this thing for over 6 months and actually seen a screensaver with animation twice.  I have to turn my TV off if I am going to be away from it for any amount of time.  It has had plenty of opportunity.  The bottom line is that the people who write the firmware (operation software) don't seem to know what they are doing because this device is terrible at detecting REAL events and performing the necessary actions.  As a software/media developer, my primary device is a PC but I have been using PCs with receivers for decades and never had these kinds of problems.  Oh yeah... and the latest estimate of a firmware download is over 10 minutes.
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Reviewed in the United States on July 13, 2025
N
Verified Purchase
Neuralsplyce
West Palm Beach, US
★★★★★ 5
Turned me into a Denon fan.
Style: AVR-S770H
I've only ever used Sony components for over 30 years. My latest Sony receiver experienced some problems. When I saw how much it would cost to repair it myself (circuit board swap), I decided to look at what else is on the market. This receiver costs less than the Sony replacement part with S&H. When the box showed up with full-sized, color pictures of the front and back of the receiver, I knew I was going to become a fan. Opened the box and one of the first thing I saw was a sheet of colored cable labels that includes labels for the components that will be plugged into the receiver. Pull the receiver out and see that the ports are color-coded too. Color-coded ports and labels is something I'm very serious about. I worked for years as a field engineer for a Fortune 100 computer equipment manufacturer. The low-end components started at $100k. For years, I tried - and repeatedly failed - to convince the product design teams to color-code the ports. To find everything I had fought for in a consumer-grade device was a dream come true. Not satisfied to make the cabling process as easy as paint-by-numbers, Denon embedded a video setup routine in the receiver that walks you through setting up your speakers, running the cables, and plugging in every single cable. The audio calibration process far exceeds what the Sony receivers do. In the box is a microphone with really long cable and a cardboard microphone stand you can easily assemble and disassemble. During the lengthy calibration, you place the microphone in 3 different listener positions - twice - for a total of 6 room readings. Adding components to each HDMI port was also just as easy and detailed. I have a small 'home theater PC' that it detected and gave me multiple names to assign to the port (Sony port names are fixed). I plugged my Xbox into the Game port and the top name on the list was Xbox. In no time, my home theater was back to normal - and I haven't even download the user manual to learn how to use the other features or go into the advanced settings.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 31, 2024

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