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Internet # 323918806

Model # DIYCASSETTE18HP-230C25

Store SKU # 1009036144

18,000 BTU 1.5-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 18k BTU Ceiling Cassette provides efficient heating and cooling while remaining out of sight and discreet, making it a perfect fit for any space. This easy to install and easy to maintain unit is offered in both single-zone and multi-zone options and can provide coverage for large and small spaces. The cassette features an easy, low profile installation and can be recessed between all types of joists on 16 in. center including pre-manufactured I-joists. This makes it a perfect option for both new construction or retrofits. It doesn't have strict installation requirements like other ceiling cassettes, so you're able to install it in the location that suits you best, without using ductwork or wall space. The cassette works with the MRCOOL DIY Quick Connect line set and the No-Vac Coupler to increase the length of the line set. Not only does the unit offer quiet operation and multiple operating modes, but it also features the Elevation function that lowers the filter panel for easy air filter maintenance. Purchases of the MRCOOL DIY Series 18k BTU Ceiling Cassette are protected by a limited lifetime warranty in addition to a 7-year compressor warranty and 5-year parts warranty.


  • 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 # 323918806

Model # DIYCASSETTE18HP-230C25

Store SKU # 1009036144



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

18000 BTU

BTU Heat Rating

18000 BTU

Color Family




Decibel (Sound) Rating

44 dBA

Decibel Rating

44 dBA

Filter Type



Heater, Remote Control, Self-diagnostic tools

Mini Split Features

Auto cool, Automatic shutoff, Fan only option, Sleep setting, Wireless remote control

Mount Location

Ceiling Mount

Number of cool settings


Number of Fan Speeds


Number of Tons

1.5 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|Jun 25, 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
              8 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
              1 found this review helpful
              • 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