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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4.5 ★★★★★
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A
Verified Purchase
Amazon Customer
Dallas, US
★★★★★ 5
The really work!
Bought these or a friend with severely dry cracked feet. The change was significant and immediate. They wore them around the house for a day and that night they could already feel the difference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
L
Lina
Draper, US
★★★★★ 5
Fabulously bizarre and effective
These silicone socks have to be the strangest item I have ever ordered from Amazon. However strange they are, I was pleasantly surprised with them. My order came with two pairs, and I took one pair out to wash before use. I laughed at handling them then because they were a cross between hospital socks and leftover mannequin skin…trippy. The socks dried fast, so I put on foot lotion and put the socks on. The socks are beige skin tones that cover the entire foot up to the ankle, basically booties. The silicone is very soft and makes putting on and taking off the socks easy. They are also surprisingly easy to walk around in because the bottoms have grips, again, like hospital socks. I walked on tile, hardwood, and carpet with no slipping. The booties also stayed in place with no issues. I was concerned my feet would sweat, but that didn't happen. I was able to wear them for 3 hours without sweaty feet. When I took them off, my feet were a lot more soft than before or if I had used regular socks. For reference, my feet are not terrible, but the skin around my toes is dry and peeling from my picking(gross, I know). The socks I got are a size large, which worried me because they are big, but the site said for my shoe size (9) that's what I should order, and they were right. They are the perfect size and stretchy for room. I can't believe how cool and well-thought-out these socks are, on top of working. Honestly, these are among the top 20 favorite items I've ordered from Amazon. They may look incredibly strange, and they are, but they work wonders.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2025
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 3
Not well made
I have used these for 2 weeks now and one of them has a hole in the sole... I won't ever buy them again
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Reviewed in the United States on July 15, 2025
K
Verified Purchase
K. Davis
Phoenix, US
★★★★★ 5
Works for foot psoraisis
Size: 2 pairs black L
Got these for work (service industry) to reduce issues with psoriasis and blisters while putting on 20k+ steps a day. Over time the wounds healed and I could work without so much pain. I now don't use them all the time like I used to, only when a new lesion or blister appears, too prevent a breakout. Tip: if you're not in full breakout, wear thick socks under these as a barrier to friction.
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Reviewed in the United States on April 28, 2026
K
Verified Purchase
Kim C
Los Angeles, US
★★★★★ 4
Work well but run small
Size: 1 pair black L
They do seem to run a bit small. I bought them for my bf but snagged them from him because I couldn’t resist! I’m about a W8/12 and they were just a little big but unlike others, I just put them on while sleeping and didn’t walk around with them. If you’re just planning on that, they did a great job at sloughing and moisturizing 😎
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Reviewed in the United States on April 25, 2026

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