Gorilla Gadgets 5300 CFM Powerful Portable Evaporative Air Cooler with 7-Gallon Water Tank, Remote Control, 3 Speed Settings & Swing Mode - Ideal for Home, Office, and Indoor Cooling (Model LBW-6500RC)

My office where I work has very poor airflow, is always very warm, and the humidity can get as low as 20%. I needed a solution to enable me to work comfortably all day. I did some research on evaporative coolers and settle on this one, mainly because of the size of the tank. I didn't want to have to constantly refill it during the day, but I also did not want something that would be difficult to fill because of a large size. The unit stands taller than I expected, but it looks nice, so it's not an issue. With multiple computers and monitors in my office, the temp could easily rise to around 76 degrees F. The lowest seeting keeps my office at around 69 degrees (with no ice packs) and 40% humidity.The only issue I have with this unit is the way you have to read the water level. Other reviews stated the fact that it is difficult to read the water levels, and that is indeed true. There are five small windows on the front where you "should be able" to read the water level, but it is difficult and you will need a flashlight. I find that it is easier to use my flashlight and look inside the unit from the back. to do this, I have to move the unit away from the wall. Not a huge issue, but one that could be easily remedied with an update in the design.But, the unit does exactly what I needed it to do - cool my office. It is relatively quiet - I use it on the lowest Comfort setting. The oscillating feature is nice because it moves the air around my office. Sometimes I don't mind my office being a little warmer if I at least have moving air.I purchased a gallon water tank from Amazon for refilling. I find that when I set the unit to cool and the fan on 1 (it goes from 1-3), 7 gallons of water will last for 8 hours of continuous use.One thing to keep in mind is that this unit will add humidity to your environment. This works for my because my office is so dry. To prevent the buildup of excess humidity, you must have airflow to your room. So, with this unit, working with my door closed for long periods is not an option. On the first day of use, I left my door closed and the humidity go up to 60%. It seems as though the more humid it gets, the cooling is less effective. So, I keep my door open about halfway and I am comfortable all day. If I need to work with my door closed, I keep an eye on the humidity level with a small digital hygrometer on my desk. If it gets to high, I can turn the cooling function off for a while and just use the fan.Operation is very simple, the instructions were easy to follow, and the unit has just enough options. One thing that I would suggest is to maybe purchase a couple of better ice packs that stay cold longer.Excellent unit!!