MRCOOL 12,000 BTU WiFi Smart DIY Star 4th Generation Ductless Remote Controlled Mini Split Air Conditioner with Sleep Mode Function, White
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Availability:
In Stock.
Arrives
Monday, Aug 17
Style: 12K
Size: 4th gen
Features
- Air Conditioner: 4th Generation DIY mini split air conditioner equipped with a low refrigerant alarm to prevent costly repairs and air filter cleaning and replacement alerts to ensure optimal air quality and efficiency
- Easy DIY Installation: No special tools, equipment, or training are required thanks to pre-charged Quick Connect line sets, making installation a breeze and completing in just a few hours
- Low Ambient Cooling: Capable of operating in cooling mode from as low as 5 degrees Fahrenheit, making it ideal for server rooms, greenhouses, and year-round cooling needs
- Auto Restart Feature: In case of power outages, the unit automatically restarts at previous settings, ensuring continuous comfort without manual intervention
- Comprehensive System Includes: Comes with an outdoor heat pump condenser, indoor wall-mounted air handler, upgraded DIYPro cable, remote control, Smart HVAC controller module WiFi smart kit, and installation kit for a complete solution
Description
Visit the Store Visit the Store Visit the Store 12000 BTU 18000 BTU 24000 BTU 36000 BTU
Brand: MRCOOL COMFORT MADE SIMPLE
Capacity: 1 tons
Cooling Power: 12000 British Thermal Units
Special Feature: Heating & Cooling Function
Product Dimensions: 16"D x 26"W x 36"H
Start year: 2020
Seasonal Energy Efficiency Ratio (SEER): 22
Color: White
Voltage: 115
Noise Level: 23.5 Decibels
Cooling Power: 12000 British Thermal Units
Additional Features: Heating & Cooling Function
Color: White
Noise: 23.5 Decibels
Refrigerant: R-410A
Filter Type: Nylon
Inverter Type: Has Inverter
Installation Type: Split System
Compressor Type: Rotary
Is Outdoor Unit Required: Yes
Air Conditioner Application: Residential
Core Material: Aluminium Alloy
Voltage: 115
Power Source: Corded Electric
Wattage: 25.0
Is Electric: Yes
Is Product Cordless: No
Seasonal Energy Efficiency Ratio (SEER): 22
Efficiency: High
Annual Energy Consumption: 22.5 Kilowatt Hours
Air Flow Efficiency: 325.1 Cubic Feet Per Minute Per Watt
Warranty Type: Limited
BEE Star Rating: Energy Star Certified
Brand Name: MRCOOL COMFORT MADE SIMPLE
Start Year: 2020
Model Name: DIY-12-HP-WM-115C25
Model Number: DIY-12-HP-WM-115C25
Series Number: 4
Included Components: Ductless Mini-Split
UPC: 810035935150
Manufacturer: HVAC Distributing LLc
Item Type Name: Mrcool 4th gen Energy Star Ductless Mini-Split, White
Unit Count: 1.0 Count
Warranty Description: Warranty
Item Dimensions D x W x H: 16"D x 26"W x 36"H
Item Weight: 109 Pounds
Control Method: App, Remote, Voice
Controller Type: Remote Control
Number of Power Levels: 2
Capacity: 1 tons
Floor Area: 500 Square Feet
Form Factor: Mini-Split
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Aug 17
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This is my second Mr. Cool mini split that I've installed in our home. The unit is easy to install, I did hire an electrician to wire up a dedicated 30 amp circuit, but aside from that I did the rest of the install myself. You will need to purchase a hole saw for your drill to be able to drill the right hole through the wall. Sadly, I almost nicked the electrical wiring in my wall, BE VERY CAREFUL when using the hole saw that you're not drilling through plumbing or electrical wiring. Also, you will need to purchase a pad to set the unit on outside. I recommend a foam one, they are much easier to deal with than having to pour concrete, and fairly easy to get level. I didn't get it 100% perfectly level, but it's within tolerances and it looks great on the pad outside. The wires and the AC hoses are way too long, and that's my only complaint, the install doesn't look 100% professional because you can't cut the AC lines or they will loose all the refrigerant and you would have to recharge them again. Anyway, they are coiled up next to the unit. It's on the side of the house so no one can really see it. The remote is easy to use and has a lot of great functions including "follow me" which you can then set the remote next to your bed and it will maintain the temperature at the remote, instead of maintaining the temp at the unit. There is also a dehumidify function, but honestly I don't know how different it is then cooling. There is no way to properly dehumidify the room unless you cool it as well, so often times when I want to dehumidify I have to freeze myself out of the room as well. The heat works great in the winter, perfect for San Diego, not sure how perfect it would be in sub zero climates since it does take a while to come on in those climates. One thing I recommend is buying a line set cover to cover up the line sets outside. Unfortunately, most of them are barely big enough to fit the drain line, power and compressor lines, but you can squeeze them all in and get it to fit. The line set cover gives it a nice finished look. You can get a generic one on Amazon and save money versus buying the Mr. Cool one. One cool thing, we have solar on our roof (4.6kW) and running the Mr. Cool's in all 3 bedrooms of our home on a hot day our solar was still giving back 1KW to the power company. This is so much more efficient than a central AC system.
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Reviewed in the United States on September 14, 2025 by Robert Klaproth
UPDATE AFTER 3 YEARS: No regrets at all! I can set the heat/AC/ temp from Alexa app or just by asking….its flawless and wonderful! This unit performs! Well, so far….so wonderful! We watched videos and read the instruction, first of all. Hubby then laid out all the parts and they were all intact, well packed too. He then poured a concrete pad for the outside compressor and allowed it to dry and cure. Once he knew everything was ready, he took his time, a few hours, and installed the unit. WOW, AMAZING! Both inside and outside units are whisper quiet; can’t really hear the inside unit on the other side of the room. When I returned home from work, we installed the USB unit so we could control the system remotely from the app and from Alexa….this is great! Please be sure you take your time and follow instructions. Watch some YouTube videos, good ones, because there are definitely some lousy ones that will get you into trouble during install. All said and done? The install was easy and this unit will save you so much money because you don’t need to hire a pro. Cooling and Heating is so comfortable, without blowing hard or loudly into the room. The fan mode works well, as well. Right now I canno say enough about this system….wish we would’ve purchased this years ago. Good luck and I hope you enjoy your Mr. Cool as much as we do. Will add indoor pics soon. UPDATE: We’ve been using this unit daily and are absolutely impressed! We live in the desert so this time of year morning temps are in the 40s and daytime in the 80s, therefore we use AC and heat in the same day and this Mr. Cool is impressive, to say the least. I’m so hoping it is quality and holds up because we’re so happy with this purchase.
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Reviewed in the United States on April 20, 2023 Reviewed in the United States on April 20, 2023 by Team Matthias
Two Years in the Vegas heat and still going strong! The only complaint is that the line-set flexible cover has disintegrated from the direct sunlight. It keeps my garage nice and cool in 115 temps and all I do is hose off the dust and dirt once a year. I was able to install everything myself after having an electrician install the circuit and quick disconnect box. Highly recommended!
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Reviewed in the United States on May 18, 2026 Reviewed in the United States on May 18, 2026 by Mall Security
Bought a 9k for the garage, 400 ish sq ft, mainly for the heat. Works great even in single digits. Doesn't use that much power and was super easy to install. Cools really well too. Mounted it on the wall to keep it out of the snow and dirt. Only drawback is it vibrates the wall during certain cycles.
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Reviewed in the United States on January 29, 2026 by jB
Here I am, 3 years later. The Unit began freezing up and not cooling. After lots of emails with customer service, we found it was undercharged - the Freon leaked out. After all the going back and forth with the tech, they now want me to have an AC guy come out and find the leak. That’s going to be several hundred dollars to do… and they told me that’s not covered. Buy something else, people.
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Reviewed in the United States on April 10, 2026 by Herbert Daniel
I am handy, but never installed a heat pump before. I am pleased to say the MrCool DIY product installation was a success. Spending the extra $$ for the efficiency seems worthwhile, and both the interior and exterior unit are surprisingly quiet. The Internet device was also easy to install and use (but I wish it had Apple Home support). This product still gets top stars for my review, but here are some tips to be helpful to others: - The cardboard template was a bit off, specifically regarding the cutout hole. This left the unit tipsy, so it leaked on the left side; the solution was to rehang the interior unit based on the outgoing pipes that forced the unit up. - I purchased an HVAC torque wrench ($95), but in hindsight I could have probably estimated the tightening. - I was worried about bending the cables, but it turned out OK as long as I was careful. - The exterior duct cover came with 90° bends, but frankly this is wrong since the drainage line should always have some declination. My solution was to add an angle in the horizontal exterior run. The attached picture shows the unit mostly installed before adding vinyl wrapping to the coiled items. I am planning on screwing the unit to the stone supports, but need a mortar drill bit. Overall, my out-of-pocket costs (<$2K) are significantly less than the professional estimates ($5K-$6K). THANK YOU to MrCool for offering a handyman-friendly solution.
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Reviewed in the United States on July 1, 2023 Reviewed in the United States on July 1, 2023 by mclark
Product is great, came on time. Plenty of good instructions to follow. Lots of great reviews and videos on YouTube of DIYers...functionally, esthetically - very well made. few down sides. If you are like me and planning to install on a 2 story house. It wasn't easy. Get it done by a Pro in that situation. This unit can only be installed with pipes going out the building from the right side. (The left side pipe do NOT go out rather they go out straight on the left). I can not believe this company does not make a product where the pipes can be take out from the left side. (It would have been so much better in my situation - see pic. Had there been a left side cutout, it would be a straight show down instead of routing the way I did - Not happy) I used 'Pioneer' lineset covers - get bigger ones than you need - I used 4 inch covers for 12k system...better for all pipes to stay in place. Do get the 'Danger - high voltage' stickers - it is a must - cost me $5 on AMZ. (MrCool should provide such stickers)
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Reviewed in the United States on December 14, 2023 Reviewed in the United States on December 14, 2023 by Pete
Was quoted $4K - $5K for a new mini-split from a local HVAC contractor which wasn't in my budget, so i figured i would give this Mrcool unit a try. So far I am very happy with this system! It worked flawlessly on initial powerup. I had some difficulty trying to get the wireless function to connect with the app on my phone, but after 4 tries it finally worked (Love this feature)! Installation was fairly simple for someone with mechanical skils. Instructions were very detailed but there was one flaw I found that should be addressed in the process. They state after you have tightened the copper connections, to do a leak test. Then they tell you to cover the connections with the supplied tape. Later in the instructions after yoou start up the system for the first time, they tell you to check the piping connections for leaks again. Well, that's difficult to do since you've already wrapped the connections with tape! I would suggest not wrapping up the connections until after startup in order to recheck the connections as suggested in the instructions. I still am very impressed with the system and it's easy self install, saved a bunch money! Now we'll see how durable it is for the long haul, i'll update with any issues at a later date.
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Reviewed in the United States on August 27, 2023 by Tim H