Top positive review
5 people found this helpful
Coolblus will take your hot room blues away!
By Matthew Johnson on Reviewed in the United States on April 27, 2025
I recently purchased the Coolblus Portable Window AC unit, and it has exceeded my expectations in both quality and performance. From delivery to setup, the process was seamless. The unit arrived upright, as recommended for immediate installation, and the packaging ensured it was in pristine condition. Installation: The setup process was straightforward, thanks to the included Quick Start Guide and detailed Instruction Manual. After measuring my 35-inch horizontal window opening, I followed the guide's suggestion and trimmed 2 inches off sliding panel B for a perfect fit—this allowed the exhaust opening on panel A to align correctly. I appreciated the thoughtful design of the T-bolt and wing nut lock system, which securely connects the panels. To ensure an airtight fit, I added thin foam insulation strips (not included) to eliminate any gaps—a small enhancement I highly recommend. Connecting the exhaust duct was simple and hassle-free. Attaching the hose to both the unit and the window panels was intuitive, and once the window sash was lowered, my setup felt solid and secure. Performance: This unit comes with three functions: Cool, Dry, and Fan. I primarily use the cooling mode to combat the intense Texas summer heat in my upstairs 200-square-foot room. Setting it to 70°F quickly delivered powerful cooling performance. Both the top control panel and remote are easy to use, and the functionality is straightforward. Noise levels are typical for portable ACs—not disruptive but noticeable, especially at the high fan setting. The front louvers offer flexibility for directing airflow, and the recessed lift handles make the unit easy to reposition if needed. Verdict: The Coolblus AC unit combines thoughtful design, user-friendly installation, and reliable (so far) cooling performance. It's an excellent choice for anyone needing portable climate control in a smaller space. I’m very satisfied with my purchase and look forward to staying cool all summer long. Highly recommended!
Top critical review
23 people found this helpful
Are you afraid of fires? I am.
By J.D. on Reviewed in the United States on March 30, 2025
So I bought two different units from two different companies, both from Amazon. I got this one for the step-down den with the weird windows that won't take a typical window unit. And I regret it!! When this thing worked, it worked beautifully. The excessively long cord and exhaust tube was annoying because they would get in the way, but I liked the wheels enabling me to move it more easily. I was sohappy to have a cool den, I didn't care about the burden. It worked right up until my warranty ran out, like it was in communication with my calendar or something. Suddenly, it started to make terrible noises, like every second it would grind a little. But, since it was our first day of the year in the upper 90°Fs, I figured it was working harder and I just needed to clean the filters. And I did clean them and it kept making the noise. It wasn't terrible but I could live with it. Then the weather cooled down to the 70s, so it should be better, right? But I got home from work to find that the noise had gotten worse. Before I could check it, the noise just stopped. I thought that maybe it was finally okay and I let it work while I watched a movie. I noticed that the room felt hot. I went to check the unit, and the unit got was hot. Like I was smelling burning plastic hot. The machine was *very* felt hot to the touch. I unplugged it and I contacted customer support. We went through the obligatory questions multiple times: "Is it set to cool instead of fan? Did you turn the temperature down? Did you clean the filters?" I know why they have to ask the basics but it got exhausting. At no time should the machine get that hot and smell like burning plastic. And when we got to the part about removing the back panel, I could see the cheap inner workings and crappy plastic tape holding the styrofoam box together. It looks like the factory worker got to the end of the tape roll and just used what pieces were left and slapped it on there. In the end, they don't have any other help to offer and my warranty ran out, so I'm screwed. I know exactly what happened because it started making a regular grinding noise like clock. I think a piece of styrofoam, tape, or plastic dry rotted, fell down into the fan and caused it to grind, get hot, and it burned out. Weirdest thing though, it never needed a water dump. I live in 100% humidity environment (Florida wetland). That should have been my first clue that this thing was weird. But what disturbs me is that it got *that* hot and it didn't automatically shut off. That is scary.
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