VEVOR Evaporative Air Cooler,100W 1400CFM Swamp Cooler with 5 Gallon Water Tank,Humidifying,3 Modes & Speeds Portable 3-IN-1 Cooling Fan,Energy-Saved Air Cooler for 550 Sq.Ft Indoor or Outdoor

Bought to provide evaporative cooling for a small greenhouse. It's a simple design without fancy electronics or anything likely to burn out in a humid environment. The simple, mechanical design makes it perfect for plugging into a timer or other, external control system.The unit is also small and lightweight so it's easy to move around. The hose hookup for the water reservoir is convenient for extended use. The fan is adequate for its size, but not anything particularly special.The ice packs it comes with aren't particularly useful. They're a cute itea, but there's simply not enough thermal mass to them to make that much difference for any length of time. It's simpler and easier to just dump a bucket of ice in the hopper if you happen to want more cooling than evaporation alone can provide.Even then, don't expect too much. When you see the number of "tons" an air-conditioner is rated at, it's talking about the literal number of tons of ice you'd need to match that much cooling per day in an evaporative unit like this... So that should give you some idea of how much ice you'd need to feed it if you want AC-level cooling from it... When things are really hot and dry though, it'll easily shave a few degrees off the temperature of a small space, and sometimes that's all you need.

Honestly I love this thing. My first one got utterly crushed in transit and had to be replaced as DOA, but that process was relatively painless and now I'm on my second season with the new one and I'm still in love with it. Now here in Arizona we have ambient humidity in the single digits so your mileage may vary on effectiveness, but evaporative coolers work incredibly well here. I've filled this thing up with water, dumped out my freezer's icemaker tray into the top feed, and pulled out my laser thermometer to read a 20 degree difference between the aiming vanes and the interior door behind the unit. This thing buys me an extra month or two each year where I don't have to pay electric to fire up my air conditioner.But what I like most of all is that this unit is entirely mechanical. All the buttons give a hefty "clunk" when pressed, like an old-school oscillating desk fan. If you hook it up to a simple outlet timer, it comes back on exactly where you left it. You can turn on the pump without turning on the fan to pre-soak the pad. You can turn on the swing vanes and nothing else, which is useless except for making a very slight noise in an otherwise silent room that takes ten minutes to track down. It just feels simple and durable like so few things these days do.Every spring when the swamp coolers come back out again here, I usually have to give the pump and the water level sensor a soak in vinegar to break up last year's hard water scale and get everything moving again. This one, I just filled with water, gave it a light kick, and the shock un-stuck the water pump and fired it right up again. I dread having to soak and scrub my other, much more complicated cooler.I love this thing and if it dies I'm buying another one.

[Update]After reading the reviews for this product, it has become clear that the reviewers fall into one of two distinct categories. Those who have prior experience with swamp coolers tend to leave very positive reviews, while those unfamiliar with this (almost ancient) technology have unrealistic expectations and tend to leave one-star reviews.In a normal setup a swamp cooler is installed on the outside of a building to draw air in from outside. This air is cooled by the water and blown into the home. You MUST provide an open door or window, preferably on the opposite side of the room, to allow the hot, stale air to be pushed out of the room. The constant replacement of air is what cools the room. You cannot place this cooler in the corner of your living room and expect it cool the room. You will simply be recirculating the same air until it reaches 100% humidity and you will be miserable.Another important factor is the relative humidity in your area. Simply put, it's very effective in low humidity but almost useless once the humidity surpasses 50%. Those living in the western half of the country are more likely to be happy with the performance of this cooler. Please see the attached chart that shows what temperatures can be achieved in your specific conditions.I have used this cooler daily for the last 45 days. Regardless of what the marketing material says, this unit is designed for OUTDOOR use, and this is where it really shines.I have been able to spend afternoons and evenings on my patio with outdoor temps above 100°. The air must be blowing on you constantly to keep you cool. The unit uses a little over one gallon per hour of operation giving you approximately 5-1/2 hours use between fillings.While this cooler works great outdoors, it is NOT capable of cooling your house, or even your bedroom.[Original Review]I live in west Texas where we have very low humidity and this unit is perfect for my situation. I was able to sit comfortably on my patio while the ambient temperature was 108°.I like the overall design of how the water is pumped from the bottom reservoir to a tray at the top. The water then spills out the tray and distributed to the 3 cooling pads. Very simple design.The ice packs are pretty useless but you can use them in your Yeti cooler. Filling the top compartment with ice made the discharged air considerably cooler but the ice was completely melted in less than 10 minutes.I use Swampy (yes, he has a name) in my garage and on my patio. I keep the garage door open about 1 foot with Swampy backed up to the opening. Swampy can cool my garage approximately 20°. This puts my overall garage temp at 86° during the hottest part of the day. While 86° is still hot I am very comfortable if the unit is blowing directly on me.The temperature of the discharged air is noticeably cooler when the fan is on low speed since the air spends more time within the cooling media therefore extracting more heat. Run the fan on high if you're trying to push a lot of air. Run it on low while sitting in front of it while out on the patio for maximum cooling.The humidity in my location is usually less than 20% and often in the single digits. This cooler performs well in these conditions. The effectiveness of this unit drops dramatically once the relative humidity surpasses 45-50%.My biggest complaint about this unit is that the filter/cooling media cannot be easily changed. There is no way to access the pads without disassembling the unit and there is no mention of changing the pads in the owner's manual.Overall I am very pleased with the performance of this unit.

This thing is quiet and worked great for 3 months in Arizona. The pump stopped working and it is outside of the return window.. A waste of money for something that only lasted a little over 3 months.