MRCOOL DIY 5th Gen Multi-Zone 5-Zone 55,000 BTU 22 SEER2 (6K + 9K + 9K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
SKU: 793200561

MRCOOL DIY 5th Gen Multi-Zone 5-Zone 55,000 BTU 22 SEER2 (6K + 9K + 9K + 18K + 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 (6K + 9K + 9K + 18K + 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 6K + 12K + 18K + 18K + 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 6K + 12K + 18K + 18K + 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 - 6K + 12K + 18K + 18K + 18K is ideal for homeowners looking to efficiently cool and heat five rooms of varying sizes. 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 (6K + 12K + 18K + 18K + 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 - 6K + 12K + 18K + 18K + 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 - 6K + 12K + 18K + 18K + 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
  • 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: 793200561

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4.4 ★★★★★
Based on 1352 reviews
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S
Verified Purchase
SandyLK
New York, US
★★★★★ 5
Very comfortable to use
Color: Rose, Size: 1 Pack, Style: Combo
This is a nice keyboard/mouse for the money. I ordered it in pink because it will help me to keep it separate from others I have. I have a tendency to forget which mouse goes with which keyboard. The color makes all the difference. In addition this works well and has a light up indicator for the caps lock which my older one does not. That was annoying to look up and see that everything was in caps by mistake. Good product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
Z
Verified Purchase
Zoey& Fabian
Natrona Heights, US
★★★★★ 5
Comfortable and responsive
Color: Black, Size: 1 Pack, Style: Combo
The Logitech MK270 Wireless Keyboard and Mouse Combo has been an amazing addition to my setup! The keyboard feels comfortable and responsive while typing, and the mouse works smoothly with no lag. I love how easy it was to connect — just plug in the USB receiver and it’s ready to go. The battery life is impressive, and the wireless range is great for keeping my workspace clean and organized. Perfect for work, school, or everyday use!
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Reviewed in the United States on May 13, 2026
J
Verified Purchase
Judi Fryer
Louisville, US
★★★★★ 5
What's NOT to LOVE about this keyboard
Color: Black, Size: 1 Pack, Style: Keyboard
As a professional typist with decades of 12-14 hour days of doing nothing but just typing, I am very picky about keyboards. Keyboards that meet my standards are getting fewer and far between. Within a strict budget - this Logitech Wireless Keyboard more than meet my exceedingly stingent demands and I am currently a happy-typer. My finally gave out by way of a repeatedly sticking spacebar, which I tried to repair many times, but finally to no avail. After four years of faithful service, I finally had to put that wondeful keyboard to rest. Now a retiree with a tighter budget I had to seek something more in line with my pocketbook. The one new crteria was that my next purchase be a wireless keyboard. I spent days and days reading keyboard reviews and finally decided, with reservation, to order this Logitech Wireless Keyboard. My experience with Logitech consisted of trying a few of their wireless mourses. I would always go back to my of which I have two that I use daily and which I find the best mouse on the market. However, the description and reviews of the Logitech K270 seemed the most positive of all the keyboards and at $28.75 it was in my price range. I would have preferred to purchase it locally because I have a history of having to return keyboards because of being unhappy with the touch, sticking keys right out of the box, horrible configurations and key spacing, etc. However, no local business carries this keyboard in stock. I set aside an entire evening to set up my new keyboard, again based on previous history, and also because it was wireless, a new type of keyboard for me. I had a lot of extra time left for other endeavors that evening. Simply put; I opened the box, removed the keyboard and receiver from box, inserted the receiver in my computer tower, pulled out the paper tab from the battery door on the bottom of the keyboard, flipped out the feet on the bottom of the keyboard, turned the keyboard on, and started to type. I was amazed and pleased but I thought it was too early to review the product, I wanted to give it awhile to check out the actual fact of typing with this lightweight, well designed keyboard. The next morning I started with the new keyboard and wanted to test the touch and design of the keys placement on the board. Within 15 minutes I had forgotten that I was supposed to be trying out a keyboard; it simply became my keyboard. Now 24 days later I finally remembered I had never reviewed the product. That is because in that 24 days I have never actually given much thought at all to the fact that I am typing on a NEW keyboard. This was pretty much my first seamless keyboard replacement. I am of course aware that I don't have to keep adjusting the wire from the keyboard to the computer, that I don't have to adjust the sliding drawer where my keyboard rests because the wire is caught on something, that the wire isn't tangled in my feet because it is drooping to the floor, that the wire isn't keeping me from opening the sliding drawer far enough, and all those problems I have endured for years because I thought a wireless keyboard might not be responsive to my need for speed. In that regard, I have yet to notice anything, other than the lack of the physical wire, that tells me I am typing on a wireless keyboard. The touch of this keyboard just seems normal to me and hasn't caught my attention at all. This keyboard is designated as being Long-Range Wireless. My keyboard and computer tower are very close in proximity, so that was a feature I didn't need. However, I have tested this out and I can type on this keyboard down the hall from my office and into the dining room (next room over from office) and the response is fine. The second room over stretches the keyboards wireless limits and it starts to drop letters. I did not measure the distance. All in all this did not present a problem for me though. I never notice slowless or dropped letters or non-responsiveness where it matters, at my desk or in the next room either. The little feet on the bottom prop the keyboard at just the correct angle for me. I used to have to keep an additonal prop aid under my Saitek keyboard to get the cant just right. There is no wrist rest on this Logitech where there was on my Saitek. It took approximately 15 minutes for me not to miss it. My sliding drawer or keyboard tray is formica and like every keyboard I have had, the keyboard is a bit inclined to slide, but I long ago affixed rubbery-like shelf line with double-sided scotch tape to the surface of my keyboard slider. I placed new liner in honor of my new keyboard and voila, no slipping and sliding. The placement of the keys on this Logitech K270 keyboard are the nearest to the original placement of most of the keyboards I read reviews for. As a longtime typist the changing of major key placement and altering of the spacing between groups of keys always appears counter-productive to me. I don't understand the trend toward re-inventing the keyboard by every major keyboard manufacturer, but it continues to occur with even more frequency as the years roll by. This keyboard presented no problems for me whatsoever in that aspect. It sports a standard, full-size layout which I appreciate. I do however like the addition above the the F function keys, of several small short cut keys. I particularly enjoy the keys that takes me to my home page and to my e-mail (both with no set up required by me at all). There are also keys to increase, decrease, and mute the volume of videos, music, etc which I find helpful. There is also a key that brings up a calculator to the screen. I haven't had the keyboard long enough to encounter the need to replace the two AAA batteries required. The length of the battery power is estimated at 24 months or 2 million keystrokes per year. Now that I don't type all day everyday it might take me awhile to get to 2 million keystrokes in a year. There is an off/on switch on the keyboard to preserve battery power; however, I never turn mine off, nor do I turn off my wireless mouses. Just not a habit I ever developed. I would rather just change the batteries. I also have not utilized the feature available to allow just the one receiver for the keyboard and other compatible items such as your logitech mouse, but I have no reason to doubt that it wouldn't work perfectly as advertised. All in all this was easiest to set up computer keyboard I have encountered in years. The keyboard itself has everything required to make someone used to typing on a standard keyboard completely satisfied with the purchase. I recommend it highly.
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Reviewed in the United States on June 28, 2013
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Verified Purchase
Nicole
Lexington, US
★★★★★ 4
Perfect, Budget‑Friendly Combo
Color: Black, Size: 1 Pack, Style: Combo
The Logitech MK270 Wireless Keyboard and Mouse Combo for Windows, 2.4 GHz Wireless is a great, cost‑effective set of everyday desktop accessories. It connects easily with a single USB‑A dongle, gives you a full‑size keyboard with a number pad and media keys, and includes a compact, comfortable mouse that works smoothly for typing and browsing. Battery life is excellent (keyboard and mouse both last many months), and the 2.4 GHz wireless connection stays stable without noticeable lag, so it’s reliable for office work, school, or casual home use. Overall, it’s a simple, plug‑and‑play wireless combo that delivers solid performance at a very reasonable price.
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Reviewed in the United States on April 12, 2026
C
Verified Purchase
CD_in_NM
Whiting, US
★★★★★ 5
K270 keyboard info that might help you
Color: Black, Size: 1 Pack, Style: Keyboard
This review is a bit long, but has info that might help you. I posted it twice, once for the K270 keyboard and once for the M510 mouse. I have owned a K270 keyboard and M185 compact mouse for years. I bought them as the keyboard/mouse combo that Logitech sells. I have been happy with them. They are still working, but I decided that I would like to have a full size mouse. I settled on the M510 for the new mouse. The M510 mouse works with the unifying receiver. I did a fair amount of research before buying. I thought I could use the original K270 keyboard with the new mouse. I found that the older M185 mouse is not unifying. I thought that was odd because when you look at the seperate K270 Keyboard, it says that it is a unifying keyboard. Why would the combo set have a unifying keyboard but a non-unifying mouse? From what I have read online, when you buy the K270/M185 combo, it is NOT a unifying set. If you buy the K270 keyboard seperately, it IS a unifying keyboard. Since I wanted to get the M510 mouse, I had to buy a new seperate K270 keyboard since the one in the combo set is not unifying. I found this out ahead of time, so it was not an issue. I actually bought 2 each of the K270 & M510, for each of our 2 computers. Did not have any trouble getting them up and running. As a side benefit, the keyboard and mouse each come with a unifying receiver so I have a couple of spare receivers now. Registering them was an adventure. There are two methods to register, a serial number search or entering the info manually. The serial number search did not find any of them, so I did it manually. I did the keyboards first. After you enter the info for the unit you are registering, the registration software asks for the serial number. When you give it the serial number, I does a serial number search and verifies that the serial number matches that unit. This serial number search acutally worked (sort of). It found one of the keyboards correctly, but kept changing the other to a K295 instead of a K270. More on that in a bit. Next I registered the mice. When I got to the point where you select the correct model, the M510 was not in the list. I tried a few different things and finally found a trick that worked. When it asked for the model, I used M525 instead of M510. At the next step where it did the serial number search, it found the serial number was associated with the M510 and corrected the model entry from M525 to M510. Success with the mice. Back to the keyboard. I could not figure out a way around the registration error, so I contacted Logitech support and got a reply back from a support rep named Sharan. After a couple of email exchanges, Sharan was able to get the other keyboard registered correctly - Thank you again for your help, Sharan. I had noticed when I first started all of this that each unit has two serial numbers, one on the box and one on the unit. The two serial numbers did not match. Sharan told me that the number on the box is strictly for inventory use and the number on the unit is the one to use when registering. Anyway, both sets are now working and correctly registered. Happy with the purchase.
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Reviewed in the United States on January 30, 2024

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