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Internet # 324061878

Model # DIYM336HPC06C60

Store SKU # 1009193672

DIY 36,000 BTU 3-Ton 3-Zone 21.5 SEER Ductless Mini-Split AC and Heat Pump with Cassettes 12K+12K+18K & 35,50,75ft Lines

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  • High-efficiency ductless mini Split system: 21.5 SEER
  • Easy DIY mini split installation with pre charged R410A lines
  • Air handlers/lines: 12K,12K,18K/35,50,75 ft.
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Product Details

About This Product

This MRCOOL DIY 36,000 BTU 3 Ton 3 Zone Ductless Mini Split Air Conditioner and Heat Pump with Cassettes bundle includes: 36K BTU Condenser, two 12K BTU Ceiling Cassettes, one 18K BTU Ceiling Cassette, 25/35/50/50ft. Quick Connect lines (1/4 X 1/2), 75ft. Coupler Kit(s) (1/4 X 1/2), 3 Remotes, and 3 Smart HVAC Wi Fi kits. Each 12K BTU Ceiling Cassette is capable of heating and cooling up to 500 Sq Ft. While the 18K BTU Ceiling Cassette is capable of heating and cooling up to 750 Sq Ft. MRCOOL offers an easy DIY ductless mini split installation with their patented DIY pre charged quick connect line sets that makes connecting refrigerant piping as simple as turning a few wrenches. The innovative Gold Fin anti corrosion technology makes this a great choice for those in coastal regions where corrosion is more likely. With a low profile installation and quiet operation, the mini split ceiling cassette is the most versatile ceiling mount air handler. Whether it be new construction, retrofit, or anything between they are designed to be recessed between all types of joist on 16 in center. A unique feature is the Elevating Filter function which allows the filter panel to raise or lower automatically with the touch of a button, so maintenance is easy. It can be operated with the included remote, Alexa, or Google Assistant. This system is backed by a 7 year compressor warranty and 5 year parts warranty.


  • Energy efficiency: 21.5 SEER2, 8.8 HSPF2
  • Designed to efficiently provide ductless heating and cooling up to a combined 1500 Sq Ft
  • Easy DIY installation: pre-charged R 410A quick connect line doesn't require special tools, equipment, or training
  • SmartHVAC app: wifi control compatible with Alexa and Google assistant you can control your DIY anywhere with your apple or android smart device and an Internet connection
  • Low ambient cooling: cooling down to 5F this feature makes the MRCOOL DIY the ideal system for computer server rooms, greenhouses, and any other application that requires cooling all year
  • Offers 7 Year Compressor warranty and 5 Year Parts warranty
  • The sum of the length of all line-sets for this system shall not exceed 221.5 ft. The maximum length for each air handler is 75ft.
  • Please note: 12K, 18K air handlers require 1/4 x 1/2 line-sets.
  • Click here for more information on Electronic Recycling Programs
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Product Information

Internet # 324061878

Model # DIYM336HPC06C60

Store SKU # 1009193672



Air handler depth (in.)


Air handler height (in.)


Air handler width (in.)


Condenser depth (in.)


Condenser height (in.)


Condenser width (in.)



Air direction/circulation


Air Handler BTU

12000 BTU x 12000 BTU x 18000 BTU

Air handler weight (lb.)


Amperage (A)

45 A

BTU Cooling Rating

36000 BTU

BTU Heat Rating

36000 BTU

Color Family




Condenser weight (lb.)


Coverage Area (sq. ft.)


Decibel (Sound) Rating

65 dBA

Decibel Rating

65 dBA

Filter Type



Remote Control, Self-diagnostic tools

Line Set Length (Ft.)

35 ft x 50 ft x 75 ft

Mini Split Features

Fan only option, Mobile App, Multi-zone compatible, Timer, Wifi

Minimum Outdoor Temperature (F)


Mount Location

Ceiling Mount

Number of cool settings


Number of Fan Speeds


Number of Tons

3 ton

Pack Size


Power Options


Remote Access

Remote Access



Voltage (v)


Wattage (watts)

Not Measured

Works With

Alexa, Google Assistant

Zone Capacity

3 Zone

Warranty / Certifications

Certifications and Listings

AHRI Certified, CSA Certified

Manufacturer Warranty

5 year part;7 year compressor;Limited liftetime compressor

Seasonal Energy Efficiency Ratio (SEER)


Questions & Answers

Q:Hello, do these cassette units come with condensate pumps? Or will the consumer need to run drain lines externally on outside wall? Thanks
by|Jun 15, 2024
1 Answer
Answer This Question

A:  Hello dnh2129, I'm happy to inform you that the DIY Ceiling Cassettes come with a pre-installed condensate pump. This pump will efficiently remove the condensation through a drain line that must be connected to the cassette during the installation process. Have a great day!

by|Jun 17, 2024
    Q:Can these units be installed on a 12/12 (45*) pitch ceiling?
    by|May 17, 2024
    1 Answer
    Answer This Question

    A:  It is not possible to install mini split air handlers on a pitched ceiling.

    by|May 18, 2024
      Q:Can this ceiling cassette be installed on a vertical wall? I have a vaulted roof and hate the look of the mini split air handlers that are just stuck to the side of a wall. I have space to house this in a crawl space but would need to install it vertical.
      by|Sep 11, 2023
      1 Answer
      Answer This Question

      A:  The DIY Ceiling Cassettes can only be installed flat in a ceiling, They cannot be installed vertical.

      by|Jul 13, 2024
        2 found this answer helpful
        Q:What is the average running amps for this unit with everything running? Also what size breaker will this unit need? Thanks for your help I believe this unit and one other will be what I'm buying.
        by|Feb 26, 2023
        2 Answers
        Answer This Question

        A:  The specs on this page. Amperage (A) 45 A BTU Cooling Rating 36000 BTU. But I found 28 full load amps and maximum circuit breaker of 35 amps listed on the web site. Which I believe to be correct. Over 50', use #8. Voltage drop is a motor killer.

        by|Nov 10, 2023
          1 found this answer helpful

          A:  We recommend a 30 amp breaker with 10-2 wire. With this being an inverter unit, the amp draw ranges.

          by|Nov 10, 2023
            1 found this answer helpful
            Showing 1-4 of 4

            Customer Reviews

            5 out of 5

            • 5 out of 1 reviews
            • 100% recommend this product
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            Showing 1-1 of 1 reviews
            Great units
            Great units, it was fun installing with the help of my wife. This unit is actually only a 36000k that is what the condenser is able to put out 3 ton, yes the total of the evaporaters equals 42000. If you have all 3 running at the same time the larger one steps down to 12k. Also with these types of units will will have to at least have 2/3 of the indoor units running at the same time. Best ac I have ever had so much money saving for power usage compared to my old one. I now have two Mr cool systems in my house, both 3 tons . When I run both of them at the same time it's still cheaper then my old ac unit.
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            • Recommended
            1 found this review helpful
            Showing 1-1 of 1 reviews