MRCOOL 12,000 BTU WiFi Smart DIY Star 4th Generation Ductless Remote Controlled Mini Split Air Conditioner with Sleep Mode Function, White

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.

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.

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!

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.

Very quiet and keeps my 14x32 portable building/workshop comfy in summer and winter here in SW Missouri.

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)

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.

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.