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Internet # 323918804

Model # DIYCASSETTE09HP-230C25

Store SKU # 1009036142

9,000 BTU 0.75-Ton Cassette Mini Split Air Handler Only w/25 ft DIY Pro Comm Cable/Remote/Smart Controller - 230V

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  • Easy DIY mini split Installation with pre charged R410A Lines
  • Designed to recess between all types of joist on 16 in center.
  • Lower and raise filter panel at the touch of a button.
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Product Details

About This Product

The MRCOOL DIY Series 9k BTU Ceiling Cassette is perfect for any space and provide discreet and out of sight heating and cooling. It is available in single-zone and multi-zone options and is easy to install, fitting between 16 in. ceiling joists. The cassette is designed to work with both current and future joist standards and can be recessed between all types of joists on 16 in. center, including pre-manufactured I-joists. Other ceiling cassettes have strict installation requirements in less ideal locations, but the MRCOOL cassette doesn't require ductwork or wall space and is perfect for new constructions or retrofits. The cassette works with the MRCOOL DIY Quick Connect line set which makes installation even easier since it is precharged with refrigerant, eliminating the need for vacuuming. The No-Vac Coupler can be used to increase length. With advanced filtration, each cassette offers an Elevation function that lowers the filter panel for easy filter maintenance. Not only does this cassette feature quiet operation and multiple operating modes, but also provided is a limited lifetime warranty in addition to a 7-year compressor warranty and 5-year parts warranty, so you can feel confident in your investment.


  • DIY 4th gen MZ
  • Fits between 16 in. ceiling joists
  • Featuring our easy access, elevating filter that can be lowered to a maximum of 4.9 ft. from the cassette
  • Low profile installation
  • Pair with your DIY 4th gen Multi-Zone system
  • Designed to work with current and future joist standards, it can be recessed between all types of joists on 16 in. center - including pre-manufactured I-joists
  • Click here for more information on Electronic Recycling Programs
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Product Information

Internet # 323918804

Model # DIYCASSETTE09HP-230C25

Store SKU # 1009036142



Air handler depth (in.)


Air handler height (in.)


Air handler width (in.)



Air Conditioner Product Type

Mini Split Unit

Air direction/circulation


Air handler weight (lb.)


Amperage (A)

15 A

BTU Cooling Rating

9000 BTU

BTU Heat Rating

9000 BTU

Color Family




Decibel (Sound) Rating

42 dBA

Decibel Rating

42 dBA

Filter Type



Heater, Remote Control, Self-diagnostic tools

Mini Split Features

Auto cool, Automatic shutoff, Fan only option, Mobile App, Multi-zone compatible, Timer, Wireless remote control

Mount Location

Ceiling Mount

Number of cool settings


Number of Fan Speeds


Number of Tons

.75 ton

Pack Size


Power Options


Remote Access

Remote Access



Voltage (v)


Wattage (watts)

Not Measured

Zone Capacity

1 Zone

Warranty / Certifications

Certifications and Listings

AHRI Certified

Manufacturer Warranty

5-year Parts

Seasonal Energy Efficiency Ratio (SEER)


Questions & Answers

Q:Does it have the condenser?
by|May 8, 2024
1 Answer
Answer This Question

A:  This is just the ceiling cassette. It does not include the bundle of the condenser. For more information on what you are looking for, please reach out to us directly at support@mrcool.com or 270-366-0457.

by|Jun 3, 2024
    1 found this answer helpful
    Q:How many square feet do these units cool?
    by|May 7, 2024
    1 Answer
    Answer This Question

    A:  A 12k BTU system is rated for up to 500 square footage. However, there are more criteria used when properly sizing a system than just the square footage.

    by|Jun 3, 2024
      1 found this answer helpful
      Q:what is temperature range that can be set on thermostat?
      by|May 6, 2024
      1 Answer
      Answer This Question

      A:  The temperature setting range is from 62 F to 86 F.

      by|May 6, 2024
        Q:In open concept living room/kitchen/dining with 4 vents from old central ac, would it be better to use 4 9k ceiling cassettes to retrofit into vent soaces? Or 2 18k cassettes?
        by|Apr 30, 2024
        2 Answers
        Answer This Question

        A:  A ducted heat pump to replace the central AC and use the same ducts would likely be a better fit in that scenario.

        by|Jun 4, 2024
          1 found this answer helpful

          A:  Either should work fine as long as they are installed flat in the ceiling.

          by|May 1, 2024
            Showing 1-4 of 81

            Customer Reviews

            3.2 out of 5

            • 3.2 out of 5 reviews
            • 50% recommend this product
            Filter by:
            Showing 1-5 of 5 reviews
            Mr. Coolish
            We installed this unit in an unfinished bonus room. We have zero experience with mini splits, but decided to give it a shot. Let's start with the challenges we ran into.-First and most frustrating issue. This unit arrived with a warped cover. No way to know it is defective until the unit is fully installed. The company refused to replace it because it is cosmetic. I don't think I am asking too much for a new item to arrive in new condition. -The instructions and parts included were not accurate: unit drain line, grill attachment, power cable connections (if you need the longer line) are all incorrect. -The App wasn't working initially, but appears to be better now.The good-We struggled with the instructions, but we're able to get this installed with only the help of an electrician.-Build quality is solid and the WiFi features have promise.-The powered filter/grill lift is awesome. No need for a ladder. -This looks so much better than a wall unit - if you are lucky enough to avoid a cosmetic issue...We live in Minnesota, and it works well in extreme heat and cold. This would have been a 5 star review with better instructions and a replacement cover from the company. 
              • Recommended
              7 found this review helpful
              Never arrived, order was non deliverable by fedex. Tried to reorder multiple times before canceling and going with another company
              • Verified Purchase
              • Verified Purchase
              Don't waste your money. Old school window unit works better than this
              Response from MR COOL TeamDec 26, 2023
              If you are needing assistance, please email us directly at support@mrcool.com. mrcool
                3 found this review helpful
                • Verified Purchase
                2 found this review helpful
                Showing 1-5 of 5 reviews