SKU: 37106303346

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 21.8 SEER2 (9K + 9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

$2577.15 $2863.50
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Description

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 21.8 SEER2 (9K + 9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat PumpMRCOOL DIY Multi Zone 5th Generation 48K BTU Four Zone Ductless Mini Split A Heating and AC System You Can Install By Yourself! Heat or cool four rooms with the MRCOOL DIY Multi Zone 48,000 BTU 21. 8 SEER2 4 Zone Ductless Heat Pump Split System 9K + 9K + 12K + 12K. This DIY Series multi zone product features easy installation that requires no special tools or training. You'll save thousands of dollars on installation and you can get the amazing air

MRCOOL DIY Multi-Zone 5th Generation 48K BTU Four Zone Ductless Mini Split - A Heating and AC System You Can Install By Yourself!

Heat or cool four rooms with the MRCOOL DIY Multi-Zone 48,000 BTU 21.8 SEER2 4 Zone Ductless Heat Pump Split System - 9K + 9K + 12K + 12K. This DIY Series multi-zone product features easy installation that requires no special tools or training. You'll save thousands of dollars on installation and you can get the amazing air comfort of your dreams due to the condenser’s 48,000 BTU capacity. This units consists of two 9,000 btu air handlers (400 square feet) and two 12,000 btu (550 square feet). A heat pump by design, this ductless HVAC solution can run in reverse and pull in heat from the outdoors when in a heating mode. It comes with a 7 year compressor warranty, (Plus a limited lifetime compressor warranty), 5 year parts manufacturer warranty! 

MRCOOL DIY 5th Gen Multizone 48,000 BTU systems can support up to SIX indoor units.

The MRCOOL DIY Multi-Zone 48,000 BTU 21.8 SEER2 4 Zone Ductless Heat Pump Split System - 9K + 9K + 12K + 12K units are super easy to install and require no special training or expensive specialty tools. The DIY system requires line sets for each zone, this system doesn't include the line sets. 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 48,000 BTU 21.8 SEER2 4 Zone Ductless Heat Pump Split System - 9K + 9K + 12K + 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 48,000 BTU 21 SEER four-Zone Ductless Heat Pump Split Air Conditioner System - 9K + 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 48,000 BTU 21 SEER Four-Zone Ductless Heat Pump 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
  • Follow Me® Feature
  • Low Ambient Cooling
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: 37106303346

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4.5 ★★★★★
Based on 11 reviews
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Verified Purchase
MARIA SEGURA SOTO
Lowell, US
★★★★★ 5
Lo recomiendo
Flavor Name: Bacon - Kit
Muy útil, para la limpieza dental de mi perrita. Y el sabor del producto le encantó.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
O
Verified Purchase
ocasio
Port Orchard, US
★★★★★ 5
My favorite toothbrush for my fur babies!
Color: Pink (2-pack)
I think these brushes are the easiest way to brush your fur babies teeth. I can get into their mouths and really see in there and brush each tooth and make sure the tarter is off. They even assist by trying to bite the brush and I use toothpaste for dog and gently brush back and forth first the front teeth then the side teeth then the inside teeth and the top of the teeth then the inside of the bottom and top teeth and I end with the left inside top and bottom teeth. I use vanilla mint toothpaste for dogs because my dogs are allergic to proteins. Their teeth look so white and their vet comments that their teeth look so great and clean. She does want them of course to have their yearly cleaning but she said there is no rush because their teeth are so clean and she sees no dental disease. I make sure that I wash the brushes daily with soap and keep them open after use otherwise mold will grow on them if you shut them in the case they come in. My pups weigh 6 lbs and 7 lbs and are Maltese females. They cooperate fully with me brushing their teeth because I started when they were puppies and now they are one and two years old. These brushes are lightweight and not expensive at all. I usually buy several at a time to make sure I have clean ones on hand just like you would change a human toothbrush monthly. Each pup gets its own toothbrush and I label the case for each with a marker. I like these better than a regular toothbrush because it’s 360 degrees and the pup can chew on it without hurting themselves or the bristles coming off. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
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Verified Purchase
akjruthies
Dallas, US
★★★★★ 5
Dog Approved - Highly Preferred Over Standard Toothbrush
Color: Neon (4-pack)
These pet finger tooth brushes work well for me and my dog. He most definitely tolerates these so much more than a standard tooth brush. I believe I am able to reach more of his teeth and that I'm more effective brushing with these than I am with a standard brush. I put one on each of my index fingers. This makes it easier to do each side and the top and bottom without having to twist and turn to reach everything. The size is just right for my index fingers. They are a little tight getting them on and I have found that wetting my finger and the inside of the finger brush makes it a lot easier to put them on. The bristles on the finger brushes are soft, yet they are durable enough to give some good scrub quality and gum massage. These are a good price for what you get. I purchased the four-pack at right about $16.00. I have gotten numerous uses so far out of the two that I have been using. I will definitely purchase these again when it is time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
P
Verified Purchase
Patrice Dickinson
Belleville, US
★★★★★ 4
Probably Best for Medium-Large Size Dogs
Color: Blue (2-pack)
This finger cot–style toothbrush works well and is a simple way to brush your dog’s teeth, especially if they’re not comfortable with a traditional toothbrush. The material is soft yet effective at cleaning, and it gives you good control while brushing. The only drawback is that it’s a little large for my miniature Dachshund’s mouth, making it somewhat difficult to reach all areas comfortably. It would probably be a better fit for medium or larger dogs. Even so, it gets the job done and is a good option for introducing dogs to regular dental care.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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Verified Purchase
Lemons Limes
Lake Worth, US
★★★★★ 5
The easiest and best tooth brush!
Color: Pink (2-pack)
Ive tried several other dog tooth brushes for my 74 lbs Coonhound. This style and brand is the only one that is easy and works for us. It's easy to move your finger around and all sides of it have the cleaning nodules so no matter which way your finger turns, they are always touching her teeth. I like to try to open her mouth and get the inside of the mouth too. I loop my finger around her fangs. It is soft without harder parts so it doesn't make her pull away. This brush is perfect. It's a good quality and comes with a container for storage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026

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