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MRCOOL DIY 36k BTU 18 SEER2 Ductless Mini Split AC & Heat Pump 5th Generation

  • Based on 10 reviews
Condition: New
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Availability: Only 7 left in stock, order soon!
Fulfilled by Ingrams Water and Air LLC.

Arrives Mar 16 – Mar 22
Order within 12 hours and 57 minutes
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Size: 36K


Features

  • EFFICIENCY RATINGS: Features impressive 23.6 SEER2 cooling efficiency and 11.5 HSPF2 heating performance for superior energy performance in all seasons.
  • COOLING CAPACITY: 9,000 BTU system provides optimal cooling and heating for spaces under 500 square feet, perfect for rooms like garages, sunrooms, or guest rooms.
  • VERSATILE APPLICATIONS: Ideal for multiple room types including game rooms, server rooms, man caves, and sunrooms with nationwide region compatibility.
  • COMPLETE SYSTEM: Includes both indoor and outdoor units, 25-foot line set, and comprehensive installation components for a full DIY setup.
  • WARRANTY COVERAGE: Comes with 1-year labor warranty included, provided by IWAE

Brand: MRCOOL COMFORT MADE SIMPLE


Capacity: 3 Tons


Cooling Power: 36000 British Thermal Units


Special Feature: DIY Installation, Ductless System, Heat Pump


Product Dimensions: 17.52"D x 21.02"W x 45"H


Start year: 2025


Seasonal Energy Efficiency Ratio (SEER): 23.6


Color: White


Voltage: 240 Volts (AC)


Noise Level: 43 Decibels


Brand Name: ‎MRCOOL COMFORT MADE SIMPLE


Model Info: ‎DIY-36-HP-WM-230D25-OLW


Item Weight: ‎132.7 pounds


Product Dimensions: ‎17.52 x 21.02 x 45 inches


Item model number: ‎DIY-36-HP-WM-230D25-OLW


Efficiency: ‎23.6


Capacity: ‎3 Tons


Annual Energy Consumption: ‎5500 Kilowatt Hours


Noise: ‎43 Decibels


Installation Type: ‎Wall Mount


Part Number: ‎DIY-09-HP-WM-115D25-O


Form Factor: ‎Split System


Special Features: ‎DIY Installation, Ductless System, Heat Pump


Heating Elements: ‎1


Color: ‎White


Voltage: ‎240 Volts (AC)


Wattage: ‎480 watts


Included Components: ‎Indoor Unit, Outdoor Unit


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Floor Area: ‎500 Square Feet


Date First Available: April 8, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 16 – Mar 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great system
Size: 18K
Bought this for a small home and it works very well! Snow, rain....no issues
Reviewed in the United States on December 31, 2025 by m. Ann

  • Completely transformed our sunroom
Size: 12K
Easy to install, and works amazingly well. My install was tricky due to the height of the head, the fact that I wasn't able to mount it on an external wall, and that we had to run the lines 25 feet. I spent a lot of time on ladders getting this in place, so I was really happy to discover how well it functions. We should have installed one of these years ago! ... show more
Reviewed in the United States on January 28, 2026 by Stitch

  • 10 degrees cooler on a 108-degree day in no time!
Size: 18K
This mini-split is a game changer!!! Minus some supply voltage troubleshooting on the homes end, the entire process went smooth. As with all instructions - you do have to be flexible & handy. Really simple install when the process gets planned in advance. Tech-support is tops considering that we are in peak-heat season. Even though the flaws found were on the home-owners end, Mr. Cool rep worked to find us resolve until we were up and running. Not a product problem as this thing is A+. The unit outperforms & replaces 1 portable and 2 window units in our old farmhouse and draws fewer total amps! ... show more
Reviewed in the United States on July 23, 2025 by Eric Werth

  • Great DIY Solution
Size: 12K
Great product and great service. Installed a 12,000 BTU unit about two months ago. Install was straight forward. Watched videos on YouTube and was very easy. Highly recommend!!
Reviewed in the United States on July 18, 2025 by S. Pierce S. Pierce

  • avoid
Size: 12K
do not.i repeat ,do not buy a mr cool anything,i bought 2 units 18k and 24k 2 tons 240 volt and one burnt out the other leaked out freon ,just pure junk
Reviewed in the United States on October 29, 2025 by m.g.

  • Easy and works great!
Size: 18K
The media could not be loaded. DIY installed. Wasn’t too complicated. Directions lack info on breaker size and had a little difficulty with the disconnect box we chose so we ordered the disconnect box on Mr. Cool site and that one worked great. We use this in an almost 600 sqft room with walk behind closet and heats/cools perfectly, even throughout the closet area. ... show more
Reviewed in the United States on September 23, 2025 by T G

  • No to happy
Size: 36K
It continually freezes up, especially when you have the heat on and you wake up as cold and you have to turn it off to defrost
Reviewed in the United States on December 29, 2025 by Diane McGee

  • Anyone can do it
Size: 24K
Best DIY
Reviewed in the United States on August 17, 2025 by Paul

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