SKU: 57220303828

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 36,000 BTU 23 SEER2 (9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes

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Description

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 36,000 BTU 23 SEER2 (9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling CassettesMRCOOL DIY Multi Zone 5th Gen 36K BTU Three Zone Ductless Mini Split with Ceiling Cassettes 9K + 12K + 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

MRCOOL DIY Multi-Zone 5th Gen 36K BTU Three Zone Ductless Mini Split with Ceiling Cassettes 9K + 12K + 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 36,000 BTU 23 SEER2 3 Zone Ductless Mini Split System is ideal for homeowners looking to efficiently heat and cool three rooms with larger square footage. With its DIY-friendly design, this system allows you to install everything yourself without the need for special tools or HVAC training. The included 36K BTU condenser powers the entire system and is backed by a 7 Year Compressor Warranty (with optional lifetime coverage) and a 5 Year Parts Warranty.

MRCOOL DIY 5th Gen Multizone 36,000 BTU systems can support up to five indoor units.

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 3-Zone 36,000 BTU 23 SEER2 (9K + 12K + 12K) Ductless Mini Split System with Ceiling Cassette units is easy to install and requires no special training or expensive specialty tools. The DIY system includes Quick Connect lines that are pre-charged with eco-friendly R-454B refrigerant. Thanks 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 36,000 BTU 23 SEER2 3 Zone Ductless Mini Split System 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 three 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 36,000 BTU 23 SEER2 Three-Zone Ductless Mini Split Air Conditioner System – 9K + 12K + 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 36,000 BTU 23 SEER2 Three-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-MULTI5-36HP230D-O
GTIN 840255587464
UPC 840255587464
SHORT DESCRIPTION
MRCOOL® 36k DIY 5th Generation 5 Zone Multi-Zone Mini-Split Condenser 230v
LONG DESCRIPTION
The brand new 5th Generation MRCOOL® DIY® 36k BTU Multi-Zone Ductless Mini-Split Condenser is the right choice if you need immediate, effective comfort that won’t break the bank! This system, which can be installed without the assistance of an HVAC professional, is one of the most efficient and innovative HVAC options on the market. With this condenser, you’ll be able to heat and cool up to 5 different spaces equaling around 1,500 square feet, meaning you can potentially heat and cool an entire home with just one mini-split system! Our DIY® Mini-Splits are able to forgo the evacuation and charging process because our patented Quick Connect® line sets are pre-charged with R-454B refrigerant, a more efficient and eco-friendly refrigerant than R-410A, which we have previously used. These line sets are sold separately. This unit achieves a SEER2 of 23 and an HSPF2-4 of 9.9. These fittings make installation an incredibly safe and simple process, allowing you to save a lot of time and money. There are a variety of features to explore once the system is up and running. One of them is the ability to integrate your system with the SmartHVAC app, allowing you to control your comfort with the touch of a button. You can even go a step further and link your Amazon Alexa or Google home for touchless operation. With the app, you can set each zone’s temperature, set schedules for each unit, monitor your system’s energy usage, and more. There are even more features to explore that will help you customize your comfort to be exactly what you want. We’ve got your back in the unlikely event that your system malfunctions. Your system will come with a 5 year parts warranty and a 7 year compressor warranty, and if you enroll in the MRCOOL® Care Program, you’ll be able to enjoy the Limited Lifetime Replacement warranty! For the best comfort you’ve ever felt and a sense of accomplishment as icing on the cake, choose the MRCOOL® DIY®!
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 23
EER2 12
HSPF2-4 9.9
HSPF2-5 7.5
TONNAGE 3
COOLING CAPACITY (BTU) 34000
HEATING CAPACITY (BTU) 36000
VOLTAGE (V) 208/230
PHASE 1
CYCLE 60
MAX FUSE BREAKER (A) 35
MIN CIRCUIT AMPACITY (A) 30.5
COLOR White
ZONE CAPACITY 5
REFRIGERANT TYPE R-454B
REFRIGERANT VOLUME (OZ) 104.75
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 X1)
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) 16.14
NET HEIGHT (IN) 31.89
NET WIDTH (IN) 37.24
NET WEIGHT (LBS) 169.24
GROSS DEPTH (IN) 19.69
GROSS HEIGHT (IN) 34.84
GROSS WIDTH (IN) 42.91
GROSS WEIGHT (LBS) 181.88
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: 57220303828

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4.2 ★★★★★
Based on 17 reviews
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M
Verified Purchase
Michelle
New York, US
★★★★★ 5
Exceptional - Better than one twice the price
Size: 15.6" 1080P
I bought a different external monitor a few years ago for twice the price and it was abominable compared to this monitor. This monitor is absolutely perfect. The speakers are definitely tinny like others mentioned, so don't expect to DJ a party with this thing, but for work it's perfect since that means voices are clearer anyways. The sound just isn't as full/rounded with proper bass, but it doesn't even matter because there's also a headphone jack on the monitor, too. USB-C is a total game changer for powering and passing full audio-visual in a single port. The included cables are also a big win since getting a spare data USB-C cable can get pricey and I know the one included is guaranteed to work with this monitor. It was literally plug-and-play with my 2023 16" Macbook Pro. I could go on and on about how every detail of this monitor is perfect, like how the stand is also a screen protector cover and how light and easy it is to carry and how the little grippy feet hold it in place confidently, but my point is THIS is FINALLY the external monitor I've been looking for!!!
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Reviewed in the United States on May 26, 2026
S
Verified Purchase
Sarah walker
Cuba, US
★★★★★ 5
Great purchase and recommend!
Size: 15.6" 1080P, Size: 15.6" 1080P
What a great product! First I’ll start by saying it’s very lightweight which is what I needed to fit in my bag. I bought two of them because I need three screens and I couldn’t be happier. Set up, one cord!!! No power cord needed pulls power from the laptop so that’s a huge win in my book! I love the size I love the case is attached. Definitely recommend
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Reviewed in the United States on June 9, 2026
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 4
Works as advertised, but included USB-C cable was defective.
Size: 15.6" 1080P
This monitor performs great! Picture quality, brightness, all work as expected. When powered by a phone, you may have to limit the brightness below 80% if you don't attach extra power. The good news is, I can attach a power bank for the extra power, and any extra power not needed by the monitor will pass through and charge my phone. I've tested this with my laptop, phone, and tablet, and it works great in all cases. One extra plus that I didn't expect, because it was not listed in the product description and also not mentioned in any reviews that I saw, is that this monitor has VESA compatible holes for a VESA mount hidden behind the magnetic cover on the back. Beautiful. If I ever decide to mount it to an arm I can do it. All the advertised functionality works as expected with ONE exception. The USB-C cable that came with this monitor was faulty. It had a short across a couple of wires which could have caused damage to my phone had my phone not recognized it and alerted me of foreign object or water in the port. That water and foreign object warning basically means something is causing wires to be connected that shouldn't be and assumes you have a good cable. In my case, it was the cable itself that was faulty, and I used a tester to make sure. While the description says "do not use other USB-C to USB-C cables", that is just to cover themselves, because many people will use a USB-C cable meant only for charging, or one that is not display compatible. I have cables of varying lengths that are Thunderbolt USB-C which all handle between 100-240W power, data up to 100Gbps, and displays up to 8K. I just used one of my cables and everything works just fine. If you're having trouble with your monitor, or intermittent connections with the monitor (I did before I got the warning) then you may have a bad cable. Get a quality cable and make sure it's rated for display port, high data throughput (ideally minimum 40Gbps), and decent power capacity. Some will work for data but not power. Some work with power but not data. Some work with power and data, but only one at a time. You have to flip the connector to go between modes. I don't know why they make those, and those that manufacture such garbage should be locked up, but that's another story for another day. Bottom line is this. It's a quality monitor. If it ever starts having issues, I'll update the review. The cables I'm not so sure of. The HDMI cable is sufficient enough for FHD display, but I wouldn't recommend swapping it over to a higher res monitor, as it probably can't handle it. The USB-C cable has quality control issues, as they sourced out inexpensive cables for this monitor to keep the costs down. No big deal for me, as I have an abundance of good cables, but keep that in mind that you may need to consider the cost of quality cables for this monitor. I'm glad I bought it. It's going to make me much more productive. While I was disappointed in the USB-C cable, it's not a deal breaker as I already had plenty. Minus one star for the bad cable.
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Reviewed in the United States on December 2, 2024
R
Verified Purchase
Rick Hinton
Pawtucket, US
★★★★★ 5
Versatile, Great size, great value and bright. A little heavy, but well worth the cost.
Size: 15.6" 1080P
I own two of these monitors, I have been very happy with them. I carry them in my backpack/laptop case with all of my needed accessories, and it just simply works. I work from home and I was looking for something that I could take with me when I travel. My typical home setup involves a 43" LG monitor in the center, and then four additional 1080P monitors. When I am on the road, I need something smaller to have more "real estate" to work with. I usually use a hotel 4k TV or 4k tv at the air BNB we stay at so that I don't have to the 43" LG, but sometimes I just use these two portable screens. I have held meetings from a roadside park from the back of my Suburban with these while we were camping, from Panera while mixing audio, from a waiting room at an office while waiting on someone to complete their day, etc. All in all, the two that I have allow me to streamline my workflow when travelling. I have multiple windows up during the workday; I gather information from those screens and consolidate/copy/paste/ reference the data on my main laptop screen in the front and center. These monitors simply allow me to replicate what I have at home, but on a smaller and (somewhat) lighter scale. The good: I am not a gamer, so I cannot comment on how these would work in a gaming setup, I work on documents and reporting. With that said, these have great color at a great size. I can fit my Macbook Pro, and up to four of these screens in my bag, plus all my accessories, including Jabra Engage 75 headset, Plantronics headset (backup) , Apple keyboard and mouse, StreamDeck, USB-C Hub, and when needed, a universal Docking station that uses DisplayLink technology (Dell UD22) to get the extra screens. Without that, the Mac won't support more than 3 or 4 displays (Check specs for your PC/Mac). I like that these are USB-C *AND* HDMI. I can use them on pretty much any modern PC. To use the HDMI, however, You do need to power the monitor over USB-C with the provided cable. That's not a product issue, it's simply because that's the way HDMI works, there is no power over the cable. VESA capable, which is a big plus, I have magnetic VESA arms and I leave the plates on these monitors so I can use them anywhere. The bad: The rotator dial on the side has a tendency to get smashed in, but I don't use audio on either of the screens. I have a Bluetooth noise cancelling over the hear headphone set for that. A more solid design would have been with tactile push buttons instead of the rotator dial. I only have this problem with one of the screens. When I put them the backpack, I now put them in with the rotator dial pointed up to ensure a drop of the bag doesn't chance damaging the equipment. The ugly: The weight of the screens and associated covers adds about 2.5 lbs each, which is a lot. I have ordered two more, so that will be 10 lbs in the laptop backpack. May need to switch to a roller bag to cart this entourage around. Once I get the other two, I will revise this review. Right now I don't know if I will have to use the UD22 to utilize all of these screens simultaneously.
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Reviewed in the United States on June 6, 2025
T
Verified Purchase
Traveling Nurse
Waukegan, US
★★★★★ 5
Great product for a great price
Size: 15.6" 1080P
I REALLY like this. I need 2 screens to do my job efficiently and have struggled lately when traveling. Splurged on this for myself and was really impressed. It’s nice and lightweight but feels sturdy. The image quality is good. The set up could not be easier. This is a game changer for me.
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Reviewed in the United States on May 23, 2026

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