SKU: 36138299920

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 48,000 BTU 21.8 SEER2 (6K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump

Sale price$2726.10 Regular price$3029.00
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 48,000 BTU 21.8 SEER2 (6K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat PumpMRCOOL DIY Multi Zone 5th Generation 48K BTU Three Zone Ductless Mini Split A Heating and AC System You Can Install By Yourself! Heat or cool three rooms with the MRCOOL DIY Multi Zone 48,000 BTU 21. 8 SEER2 3 Zone Ductless Heat Pump Split System 6K + 12K + 18K. 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 Three Zone Ductless Mini Split - A Heating and AC System You Can Install By Yourself!

Heat or cool three rooms with the MRCOOL DIY Multi-Zone 48,000 BTU 21.8 SEER2 3 Zone Ductless Heat Pump Split System - 6K + 12K + 18K. 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 12,000 btu air handlers (550 square feet) and one 18,000 btu (800 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 FIVE indoor units.

The MRCOOL DIY Multi-Zone 48,000 BTU 21.8 SEER2 3 Zone Ductless Heat Pump Split System - 6K + 12K + 18K 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 48,000 BTU 21.8 SEER2 3 Zone Ductless Heat Pump Split System - 6K + 12K + 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 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 48,000 BTU 21 SEER three-Zone Ductless Heat Pump Split Air Conditioner System - 6K + 12K + 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 48,000 BTU 21 SEER Three-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: 36138299920

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Diane B
Carnegie, US
★★★★★ 5
Casual and comfortable
Great quality, soft and comfortable. The sleeves are a little longer than most, but the shirt is roomy enough to order a size smaller.
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Reviewed in the United States on October 28, 2025
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Traveling Lassie
Natrona Heights, US
★★★★★ 5
My Teen Son’s Favorite Shirt Right Now
This ended up becoming my teen son’s favorite shirt really quickly. He reaches for it all the time because it’s lightweight, comfortable, and easy to wear without feeling stiff or heavy. The material feels soft with a little stretch to it, and it holds up nicely after washing without coming out wrinkled. It also has a clean look to it that works for casual wear but still looks a little more put together than a basic t-shirt. It’s especially nice for warmer weather because the fabric breathes well and doesn’t feel clingy. Overall, this was a really good buy and one of those shirts that gets worn constantly because it just fits and feels good.
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Reviewed in the United States on May 6, 2026
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Verified Purchase
Beth, IL
West Palm Beach, US
★★★★★ 2
Very dark navy.
This is so dark it almost looks black when I received it. Not the color I thought it would be from the picture. Fit was good though for my son that is 6'2" and 275 pounds. Only returned because the color didn't work for family pictures.
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Reviewed in the United States on February 10, 2026
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CarnifexRex
Houston, US
★★★★★ 4
Nice fall shirt
The material on this is great. Its soft and smooth. The fit is nice around the chest and stomach, although the sleeves seem a bit too long for me (I'm 5'9 and ordered the large). Its not very thick, so it's a nice early fall, late spring shirt. The only thing I don't like is that the fabric retains wrinkles. If this isn't hung up while warm, it will hold on to wrinkles
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Reviewed in the United States on October 29, 2025
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Lisa
Lexington, US
★★★★★ 5
Stylish, comfortable long‑sleeve polo
Size: X-Large, Color: Royal Blue, Size: X-Large, Color: Royal Blue
I recently tried out this Lexiart long‑sleeve polo and was pleasantly surprised by how well it balances style and everyday wear. The textured knit gives it enough visual interest (so it doesn’t feel like just another plain jersey shirt), and the slim‑fit design helped create a clean silhouette without being overly tight. The collar and button‑placket feel more polished than a typical tee, which makes it easy to dress up a bit for smart‑casual settings. The fabric is comfortable and breathable enough to wear indoors or layered under a jacket. The length and fit were generally good — the sleeves hit just right and the body length worked for casual wear.
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Reviewed in the United States on November 5, 2025

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