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MrCool DIY 4th Gen Multi-Zone Ceiling Cassette with 25ft DIYPro Cable

✔️Use Code: MRCOOL3 For 3% Off Your Order

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Customer Reviews

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The MRCOOL® DIY® Series Ceiling Cassettes provide a sleek and unobtrusive heating and cooling solution that seamlessly integrates into any space. With its low-profile design, it discreetly fits into the ceiling, ensuring a clean and polished look. Whether for retrofit projects or new constructions, this ceiling cassette unit can be easily installed between various types of joists, including pre-manufactured I-joists, conforming to current and future standards. While remaining hidden from view, it delivers efficient and reliable heating and cooling performance that you can trust from MRCOOL®.


  • Low Profile Installation

    • You won't even know it's there
    • The MRCOOL® DIY® Series Ceiling Cassettes offer a low-profile heating and cooling option to discreetly fit any space.
  • Versatile Fit

    • New Construction, retrofit, and anything between
    • Designed to work with current and future joist standards, it can be recessed between all types of joists on 16-inch center - including pre-manufactured I-joists.
  • Easy Air Filter Access

    • Let your ladder gather dust...
    • By activating the Elevation function on the remote controller (or smart controller), the filter panel will lower for easy air filter maintenance.
  • Single & Multi-Zone Possibilities

    • Add it to your DIY® Multi-Zone configuration
    • This unit works with the MRCOOL® DIY® 4th generation series of units. The 18k ceiling cassette can also be installed as a single-zone configuration.
  • Worry-Free Installation

    • Industry Exclusive Installation
    • The unit can be easily installed between standard ceiling joists or I-joists and secured with screws. For even easier installation, use the MRCOOL DIY® QUICK CONNECT® LINE SET.
  • Smartphone App

    • Enhanced Control from Anywhere
    • Control your MRCOOL® DIY® Cassette anywhere with your Apple or Android smart device and an internet connection.




Installation Manual



Limited Lifetime* & 7 Yr Replacement* on Compressor + 5 Yr Parts


The DIY® Ceiling Cassettes have an optional LIMITED LIFETIME compressor warranty*, a 7-year compressor replacement* warranty, and a standard 5-year parts warranty for the original registered owner.




Return Policy

You have 30 days to initiate a return process for items that are unused and in their original packaging.

If you receive an order that is damaged, defective, or incomplete, please don't hesitate to get in touch with us using the following contact information:



Items must be returned within 30 days of delivery to be eligible for a refund. Please note that returns received without a return authorization number will not be refunded.

Why Choose MrCool

  1. Innovative Technology: MRCOOL is at the forefront of HVAC technology, consistently introducing innovative features and solutions to enhance comfort and efficiency.

  2. Energy Efficiency: MRCOOL products are designed with energy efficiency in mind, helping you reduce your energy consumption and lower your utility bills.

  3. Reliability and Durability: MRCOOL is committed to producing high-quality, durable products that withstand the test of time, ensuring long-lasting performance and reliability.

  4. Customer-Centric Approach: MRCOOL prioritizes customer satisfaction, actively engaging with customers, understanding their needs, and delivering tailored solutions.

  5. Ease of Installation and Use: MRCOOL products are designed for hassle-free installation and user-friendly operation, making them accessible to both professionals and homeowners.

  6. Diverse Product Range: Whether you need air conditioners, heat pumps, gas furnaces, or ductless mini-split systems, MRCOOL offers a wide range of HVAC solutions to meet your specific requirements.

  7. Industry-Leading Support: MRCOOL provides exceptional customer support, offering technical assistance, warranty coverage, and responsive service to ensure a positive experience.

  8. Environmental Responsibility: MRCOOL is committed to sustainability, developing environmentally friendly HVAC solutions that reduce carbon footprint and promote a greener future.