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Internet # 317476884

Model # DIYM336HPW07C07

Store SKU # 1009469375

DIY 36,000 BTU 3-Ton 3-Zone 21.5 SEER Ductless Mini-Split AC and Heat Pump with 12K+12K+18K & 16,25,25ft 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/16,25,25ft
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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 Wall Mounted Air Handlers bundle includes: 36K BTU Condenser, two 12K BTU Wall Mounts, one 18K BTU Wall Mount, 16/25/25ft. Quick Connect lines (1/4 X 1/2), 3 Remotes, and 3 Smart HVAC Wi Fi kits. Each 12K BTU Wall Mount is capable of heating and cooling up to 500 Sq Ft. The 18K BTU Wall Mount 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 sleek design and quiet operation, the mini split wall mounted air handler is efficient and economic. Whether it be new construction, retrofit, greenhouse, server room or anything between they are designed to effectively and efficiently cool and/or heat your desired location. 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.
  • Lifetime technical support
  • Works with Alexa
  • Works with Google assistant
  • Click here for more information on Electronic Recycling Programs
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 317476884

Model # DIYM336HPW07C07

Store SKU # 1009469375



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)

27 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.)

16 ft x 25 ft x 25 ft

Mini Split Features

Defrost, Fan only option, Overload protection, Sleep setting, Timer, Wifi

Minimum Outdoor Temperature (F)


Mount Location

Wall 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

Zone Capacity

3 Zone

Warranty / Certifications

Certifications and Listings

AHRI Certified, cUL Listed

Manufacturer Warranty

5-year Parts/7-year Compressor;Limited Lifetime Compressor

Seasonal Energy Efficiency Ratio (SEER)


Questions & Answers

Q:What does it mean per bundle.
by|Jun 28, 2024
0 Answer
Answer This Question
Q:Is 36000 BTU is enough to handle 12K+12K+18K ?
by|Nov 22, 2023
1 Answer
Answer This Question

A:  Please contact us directly for further assistance at support@mrcool.com.

by|Nov 28, 2023
    Q:Does the system require all 3 air handlers be hooked up to run the unit, or can I start with one zone and then attach the second and third air handlers later on? We have a need now for one zone, but are going to need 2 additional zones relatively soon.
    by|Sep 28, 2023
    1 Answer
    Answer This Question

    A:  The MRCOOL DIY Multi Zone systems need to have at least 2/3 of the condenser's BTU rating installed.

    by|Sep 28, 2023
      Q:Can one wall mount unit be exchanged for a ceiling mount?
      by|Sep 18, 2023
      1 Answer
      Answer This Question

      A:  You can purchase a bundle that includes both a ceiling cassette and wall mount air handler. Please email us directly at support@mrcool.com for assistance in finding the bundle that best fits your application.

      by|Sep 19, 2023
        Showing 1-4 of 28

        Customer Reviews

        3.4 out of 5

        • 3.4 out of 6 reviews
        • 50% recommend this product
        Filter by:
        Showing 1-6 of 6 reviews
        Great product. Easy to install. Super quite and is keeping my house comfortable in 110 degree heat.
        • Verified Purchase
        No technical support at all
        I installed this unit a few months ago and this is my fifth unit installing so I feel comfortable in doing so. Anyway now that it’s hot one of the units is freezing up solid. I called and after two days, I got a call back and they recommended technical support. Now it’s been another 4 days with no response or help. At a time where a heat wave covered the east I can’t get any help. At least call me back. I will never buy another Mr. Cool product because they won’t help you when you need it.
        Response from MR COOL TeamJul 1, 2024
        Hello Code,

        I hope you're doing well! I'm sorry to hear about the long wait you've had. Could you please get in touch with me directly at csmanager@mrcool.com? mrcool
          2 found this review helpful
          Main Unit Issue
          Main unit was bad had to return and replace. After that the system worked great, it was a hassle due to time to get to me in Hawaii and weight of main unit, I had to get help. Love the hose design, make sure you measure before ordering and add a little extra length due to bends. Dont pay someone to do it it is DIY videos on youtube, only issue would be electrical and probably to heavy to mount so, pu it on a slab of concrete.
          Response from MR COOL TeamJul 5, 2024
          Hello Hawaiian DIY,

          We're sorry to hear about the inconvenience you've faced, but we're thrilled to hear that you're enjoying your equipment! If you ever need any help or have any questions, please don't hesitate to contact us directly at support@mrcool.com or give us a call at 270-366-0457. mrcool
            • Recommended
            1 found this review helpful
            The over all quality of this product is great. Install was very easy. The only thing didn’t like is this is a 36000K unit it came with 2 12000K and 1 18000K indoor controllers that’s 42000K putting it 6000K over its rating. This was my fault as this was my first time working with mini splits. That’s ok because I will be installing another unit to the front of the house so I’ll use one of the 12000K on that unit. Making my next purchase cheaper!
            • Verified Purchase
            1 found this review helpful
            Simple and easy
            Installation was easy no vacuuming lineset or charging system with refrigerate this saved a lot of money and time. Individual room temp control is helped a lot.
              • Recommended
              1 found this review helpful
              DO NOT BUY!
              The units are defective. Customer support refuses to warranty them. Why, I don't know.
              Response from MR COOL TeamJul 3, 2023
              We do apologize for any inconvenience. For further assistance on the issue, please email me directly at csmanager@mrcool.com. mrcool
                Showing 1-6 of 6 reviews