Mrcool Avis 

I had purchased and installed a Mr. Cool multi-zone DIY mini-split AC unit almost 5 years ago and recently had a potential warranty issue.
Dealing with Mr. Cool Service was pleasurable. They were easy to access and talk to. I had initially started contact via Email, but the service guy suggested we talk on the phone for better clarity.
Then it only took a cople of days to get a warranty approval and in a few more days, now I have a new replacement unit.
I made this review to let people know that Mr Cool is a reputable company, their products work well, and if there is a problem, they will help you and stand behind their warranty.

Great product, process, and customer service! K&S

My MRCOOL Universal system has been a great investment. When I ran into an issue, MRCOOL’s warranty team backed up their product without the usual runaround. The replacement process was straightforward, communication was solid, and the system is now cooling better than ever. Between the strong performance and the peace of mind that comes with a responsive warranty, I can confidently recommend MRCOOL to anyone looking for a reliable HVAC solution.

Amazing warranty service and got replacement parts sent out quickly

I needed a replacement line set cover for the outdoor compressor. Filled out a request form online and received a message back (next day) saying someone would get in touch. They called a day or two later to get cc info. The part arrived a few days later and all was good. I’ve used tech support several times during the installation process of two separate DIY systems over the last 5 years and the Mr. Cool staff has been always professional and prompt.

Appreciate the the timely response to my questions.

I have purchased 2 of these units, about 1 year apart. The newer one I was having this year to get my area cooled down. I contacted customer service. It took them a bit for them to get back to me, but it was within a day. They told me I need to clean it. Being a maintenance person, I had already done that, but I did not know about the fan behind the fins on the indoor unit. It was hard to see. Once I got that cleaned, it worked like it should.
I was upset though, because a local AC company would not work on Mr Cools. They said they couldn't get replacement parts from Mr. Cool.

Great product, easy installation and the price can't be beat. It cost me about $3K to install and I was quoted $9k to $10K for an installation. Bought through Costco which saves $500 and made a return simple. My only issue is the quality of the packaging. First unit was damaged, UPS had issues. Packaging needs to be better for shipping

Good tech support - answered our questions. When our first compressor experienced a problem they sent a new compressor which is doing well.

I had a part replaced under warranty and the customer service team went above and beyond to have the issue diagnosed, part shipped out in timely manner and the issue was resolved. I can now enjoy working in my cool garage again thanks to the customer service team at MrCool.

MrCool's technical support has always been there when we need help. Since we purchased a DIY system we definitely require some expertise/technical support every once and awhile ... appreciate their help greatly!

My experience with Mr. Cool exceeded my expectations. The installation of the units went extremely well, and the customer service was timely and excellent. I asked questions on several occasions and the replies were very helpful. My unit has been running for several weeks now and the performance has been wonderful. The inside and outside units are extremely quiet and efficient. I would highly recommend Mr. Cool to anyone with DIY experience.

Had nothing but problems form day one had to replace circuit board then the compressor went out cost me $250,00 for freight charge now the unit 2orks when it wants to wrost thing I ever brought don't buy a mr cool can't get anyone to respond worst customer service ever unit is 2 years old I'm going to see a lawyer for help lot of pain and suffering in this heat

Easy to order and install.

While MrCool makes inexpensive mini split air conditioners, these units are not free of faults. I have a 3rd gen DIY 120V unit installed 3 years ago - began to fail this March.
The problem is that MrCool does not have a website a customer can access to find certified MrCool technicians in his/her area. Their website only this dealers.
The second problem call with a problem you may have to wait many days for a technician to return your call. In July I waited over 6 days for a call and at the time of writing this review, I have yet to have a call from one of their technicians.
I finally found someone to help me locally.
I would strongly consider an alternative unless you are a trained air conditioner tech because your purchase while under warranty, that is meaningless.

Quick shipment and good customer support so far.

Mr Cool system was extremely well packaged for shipment. As my 24k system was very heavy, a little help from a friend enabled its installation. The needed on-line technical assistance provided was very responsive and excellent.

I am deeply disappointed with my experience with Mr. Cool and their customer service, which has been profoundly inadequate and frustrating. After submitting an initial service request, I waited over a week without a response, only receiving contact after submitting a second request. While the representative I spoke with was courteous and attempted to assist, this was the sole positive aspect of an otherwise unacceptable process.
My request was escalated to a technician whose support was entirely unhelpful. The technician demanded images I had already provided to the company, along with additional ones, and claimed—based solely on a photograph—that the refrigerant line connections to the outdoor unit were loose, despite my having tightened them to the precise torque specifications outlined in the manual. Furthermore, the technician insisted I remove the sealing wrap at the indoor unit’s connection to the pre-charged lines, a messy and unnecessary task I declined to perform. Notably, the system displayed no error code indicating insufficient refrigerant, which undermines the technician’s assertions. As a professional with 15 years of experience as a contractor, having personally rebuilt my home—including all electrical, plumbing, and roofing work—I am confident in my technical capabilities. Unfortunately, my attempts to convey this expertise to Mr. Cool’s representatives were disregarded.
Communication with Mr. Cool ceased entirely after I refused to undertake the unwarranted task of removing the connection seal. As a busy professional, I cannot afford to waste time on such unproductive interactions. I purchased this brand-new Gen5 system in mid-May 2025, and now, in mid-July 2025, I am no closer to a resolution. The $2,500 system remains nonfunctional, rendering it an expensive and useless fixture in my home.
Once my schedule permits, I intend to replace this defective system with a more reliable brand and hire a certified HVAC technician to diagnose the issue. Should the system be confirmed as faulty, I will pursue a claim in small claims court to seek accountability. In summary, my experience with Mr. Cool has been profoundly disappointing, marked by poor communication, unhelpful support, and a complete lack of resolution. I strongly advise against purchasing a Mr. Cool system, as there are far more dependable options with superior customer service available.

Easy communication, ordered on their website and AC unit was in our room waiting when we arrived. Really simple process and great service

I had an issue with my unit while doing the DIY install. I called customer service and from day one they did all they could to analyze and come up with a way to make it work. Finally, it was determined it was a faulty product, they immediately sent a replacement which I installed on receiving it - and it works beautifully! Great customer service, great delivery truck guy too!