SKU: 33304089098

MRCOOL DIY 4th Gen 2-Zone 18,000 BTU 21 SEER (9K + 9K) Ductless Mini Split AC and Heat Pump with Ceiling Cassettes - 230V

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Description

MRCOOL DIY 4th Gen 2-Zone 18,000 BTU 21 SEER (9K + 9K) Ductless Mini Split AC and Heat Pump with Ceiling Cassettes - 230VMRCOOL DIY Multi Zone 4th Gen 18K BTU Dual Zone Mini Split System with Ceiling Cassettes (9K + 9K) Experience ultimate comfort and control with the MRCOOL DIY 4th Gen Multi Zone 18,000 BTU Dual Zone Mini Split System, featuring two sleek 9K BTU ceiling cassette air handlers. Designed for efficiency, quiet operation, and DIY installation, this system is ideal for heating and cooling two separate rooms without the hassle of hiring a professional HVAC

 

MRCOOL DIY Multi-Zone 4th Gen 18K BTU Dual Zone Mini Split System with Ceiling Cassettes (9K + 9K)

Experience ultimate comfort and control with the MRCOOL DIY 4th Gen Multi-Zone 18,000 BTU Dual Zone Mini Split System, featuring two sleek 9K BTU ceiling cassette air handlers. Designed for efficiency, quiet operation, and DIY installation, this system is ideal for heating and cooling two separate rooms without the hassle of hiring a professional HVAC technician.


What’s Included

  1. MRCOOL DIY 4th Gen 18K BTU Multi-Zone Condenser (DIY-MULTI2-18HP230C):

    • Delivers powerful heating and cooling with up to 21 SEER efficiency.
    • Operates in extreme temperatures, with heating as low as -13°F and cooling up to 122°F.
    • Features a durable Gold Fin® condenser to resist corrosion, even in coastal environments.
  2. Two 9K BTU Ceiling Cassette Air Handlers (DIYCASSETTE09HP-230C25):

    • Each unit provides coverage for spaces up to 375 sq. ft..
    • Includes versatile operating modes: Cool, Heat, Dry, Fan Only, Sleep, and Auto.
    • Low-profile design installs discreetly in ceilings for seamless integration.
  3. Pre-Charged Quick Connect Line Sets:

    • Each line set comes pre-charged with R-410A refrigerant for simple DIY installation.
    • Quick Connect technology allows for secure connections using basic tools, saving time and money.

System Highlights

1. DIY Installation Made Easy

This system is designed for anyone to install without professional tools or training. The Quick Connect Line Sets eliminate the need for vacuuming or refrigerant charging, making it accessible for homeowners. Detailed instructions and video guides ensure a smooth setup.

2. Multi-Zone Climate Control

The dual-zone configuration allows for independent heating and cooling in two separate rooms. Each air handler can be controlled individually to suit your preferences, ensuring everyone stays comfortable.

3. Ceiling Cassette Air Handlers

  • Discreet and Space-Saving: Flush-mounted design eliminates the need for wall space and blends seamlessly into ceilings.
  • Easy Maintenance: The innovative Elevation Function lowers the filter panel, allowing for quick and easy filter cleaning.
  • Quiet Operation: With whisper-quiet performance, these units maintain a peaceful environment, ideal for bedrooms, offices, or living rooms.

4. Advanced Technology and Features

  • Smartphone Control: Operate the system remotely using the MRCOOL Smart Controller app, compatible with Apple and Android devices.
  • Voice Control: Integrates with Amazon Alexa and Google Home for hands-free operation.
  • Energy Efficiency: Achieve significant energy savings with a 21 SEER efficiency rating and DC inverter technology.
  • Low Ambient Heating and Cooling: Operates in extreme conditions, from -13°F for heating to 122°F for cooling.

Performance and Specifications

Condenser Specifications

  • Cooling Capacity: 18,000 BTU
  • Heating Capacity: 19,000 BTU
  • Efficiency: SEER: 21, EER: 12.5, HSPF: 10.6
  • Operating Temperatures: Cooling: 5°F to 122°F | Heating: -13°F to 75.2°F
  • Warranty: Includes a 7-year compressor warranty, a 5-year parts warranty, and an optional limited lifetime compressor warranty.
  • Dimensions: 35.04"W x 13.46"D x 26.50"H
  • Weight: 100.53 lbs

Ceiling Cassette Air Handlers

  • Cooling/Heating Capacity: 9,000 BTU each
  • Coverage Area: Up to 375 sq. ft. per unit
  • Modes: Auto, Cool, Heat, Dry, Fan Only, Sleep
  • Dimensions: 50.31"W x 13.19"D x 8.98"H
  • Noise Level: Whisper-quiet operation

Smart Features

  • Digital Display: Check temperatures, troubleshoot codes, and alerts directly on the air handlers’ displays.
  • Customizable Timer Function: Schedule heating or cooling to optimize energy usage.
  • Sleep Mode: Automatically adjusts the temperature for energy efficiency and maximum comfort during the night.
  • Emergency Cooling Mode: Quickly test cooling functionality or perform maintenance tasks with manual override controls.

Eco-Friendly and Energy-Efficient

  • Environmentally Safe Refrigerant: Uses R-410A, a non-ozone-depleting refrigerant.
  • Gold Fin® Technology: Protects against corrosion for long-term durability.
  • Energy-Saving Design: DC inverter technology reduces energy consumption, saving you money on utility bills.

Why Choose MRCOOL DIY Multi-Zone?

  1. Cost-Effective DIY Installation: Avoid the high costs of professional HVAC installation.
  2. Customizable Comfort: Tailor each zone to your preferences with independent controls for every air handler.
  3. Smart Connectivity: Control your system via smartphone, voice commands, or the included remote control.
  4. Reliable Performance: With robust warranties and high-quality materials, MRCOOL delivers year-round comfort and peace of mind.

Perfect Applications

  • Homes: Ideal for bedrooms, living rooms, or home offices.
  • Offices: Create a comfortable work environment in multiple rooms.
  • Retail Spaces: Maintain optimal temperatures for customers and employees.
  • Renovations: A flexible and efficient solution for retrofitting older buildings.

Order Now

The MRCOOL DIY Multi-Zone 4th Gen 18K BTU Dual Zone Mini Split System is the perfect combination of performance, convenience, and affordability. Enjoy energy-efficient heating and cooling, smart technology, and the freedom of DIY installation.

Order now from MRCOOL DIY Direct, the USA’s most trusted MRCOOL dealer, and start enjoying customized comfort today!

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: 33304089098

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David Wagner
West Palm Beach, US
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not too shabby
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This book reminds me of a Jane Austin novel. She writes like Jane Austin. The author did a good job with realism, life is painful and there was a plethora of that in this book. I do like how it ended even though I’m not a huge fan of Lilys choices. I’m not sure she deserved her ending, she reconciled one tragedy in her life but several others are still waiting for her to take responsibility for. It was worth the read.
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You'll want to talk about this read!
Format: Hardcover
Read this novel when it first came out and still thinking and talking about it. Great read for a book club --- each reader may have different take away topics - young love, sisterhood, friendship, forgiveness, motherhood. I just bought several copies to give to some powerhouse women. Keep writing D Curtis. Your Fan.
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gambagal
Charlottesville, US
★★★★★ 5
I was skeptical, but for me, this one works.
Size: 90 Count (Pack of 1)
I am usually skeptical of these "improve-your-whatever-with-this" products. But much to my surprise, for me this one lives up to the hype. After about a week, there was as noticeable improvement in my overall memory, especially older memories. My recall is faster, I retain things longer, and learn new things more quickly. As a side benefit, I am also now able to quickly find alternative solutions to everyday problems that come up.
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Reviewed in the United States on May 18, 2026
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WhatIsThat
Lake Worth, US
★★★★★ 5
GREAT product!! No complaints at all!
Size: 90 Count (Pack of 1)
So I got this product as an experiment. I don’t like taking prescriptions - but that is just me. I have the most boring job on the planet. And it’s all I can do to make it just through the morning without falling asleep. when I saw this product, I decided to give it a try. I am totally and completely shocked how well this works. It doesn’t make me jittery at all. It just makes me feel alive and alert and ready to roll. And I can focus on the monotonous tasks at my job. When I do take them, I have to take them in the morning. they do last all day - again - this is for me. but I found when I took them in the afternoon, I was still wide awake at 1:00am. Which put a damper on my trying to drag myself out of bed and to work at the most boring job ever.
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Angie
Chelsea, US
★★★★★ 4
good experience so far
Size: 60 Count (Pack of 1)
I’ve been taking Qunol Brain Health for a little while now, and overall I’ve had a good experience with it. What stood out to me first was that it didn’t upset my stomach, which I’ve run into with other supplements. I feel like I’ve noticed a difference in my ability to stay focused during the day, especially when I’m working on tasks that usually make my mind wander. My energy levels also feel a bit steadier, without that late afternoon mental fog. The capsules are easy to swallow, and I like that it combines several ingredients aimed at supporting memory and concentration rather than having to take them separately. It’s obviously not an overnight miracle, but with consistent use I do feel sharper and more mentally “on.” The only downside for me is the price—it’s a little higher than some other brain supplements I’ve tried. But considering the quality and how it makes me feel, I think it’s worth it.
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Reviewed in the United States on August 21, 2025

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