Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Can this be used without the window exhaust kit? is there an internal bucket to collect the water?
Document: Without ripping the unit open to look, I cannot say that this process is being used in the ARC-12S. Most likely it's some other passive method of water spillage and evaporation, while in the boost type coolers, you'd rapidly run out of water and have to supply your own into the water tank.
This portable A/C seems to fit all of our needs! When  the A/C is not in use, there is a cap that fits over the vent hole on the window kit, so it's easy to detach the vent tube and leave the kit in place when the fan or dehumidifier are being used (neither require the outside vent).The unit is sleek and modern-looking, The vent hose and window kit were easy for me to assemble in about 15 minutes.
This portable A/C works great. I sincerely doubt that it will really cool a 450 sq ft area but it does a great job for my bedroom upstairs...which is all I was really concerned with. My bedroom measures 13' x 12' or 156 sq ft and it takes about an hour to get from 85 F to 69 F. Setting it up was a breeze. The only problem I had was with the window exhaust kit.
Consider your own sleeping styles.2. Many of these units require drainage or emptying a water collection tray. This unit does not. It has a great way of evaporating the moisture it collects back out through it's exhaust. I have never had the unit stop due to it being full and it runs 24x7.3. You must have a way to vent the unit by connecting the hose to the supplied window insert.
The window kit is this cockamamie thing that doesn't fit and wasn't actually designed to fit a window, it seems. Luckily I had some packing tape and was able to improvise.As for the unit itself... the exhaust hose is HUGE. I expected something more like a vacuum hose, but it's some industrial size thing that makes it impossible to lower the blinds. Surely that wasn't necessary! I'm using it in 95-degree heat with very high humidity, and within 15 minutes I felt far more comfortable.
conditions&#34; a user never needs to empty the water collection bowls. The water allegedly is used up in the patented cooling process. If it's anything like the Pinguino water-boosted coolers like the WE-130 and WE-125, there should be a tiny sump pump inside that sucks the water to the top of the condenser coils, and then it spits the water onto the coils to quicken the cooling process as the compressor squeezes the expanded coolant gas back down to liquid form.
having to investigate this ate up alot time and I feel they should have disclosed that it did come with a 5 ft exhaust hose from the beginning, since the unit cannot operate without it. Hope this helps you
Once the exhaust hose holder-fitting is latched into place, it's very hard to get a grip on the hose fitting cover to unscrew it quickly, so you don't spill water all over yourself, your floor, and the ARC-12S. Ditto for the way-too-low and tiny &#34;lower&#34; drain port.
I like to have background noise when I sleep. You can run the unit in fan only mode without the exhaust hose being connected. It's the dehumidify and cool functions that require exhaust to the outside. The fan alone, without the compressor, is actually very quiet but just noisy enough for steady background noise.Efficiency:It claims to be energy efficient and uses an environmentally safe refrigerant.
I used a band saw (we have 3 of them - lol). PLEASE BE CAREFUL. I tried to use a carpet knife initially (yeah stupid, I know) and I almost lost an arm. The material is very sturdy.5. The exhaust hose gets very, very warm. When the compressor is running and the unit is exhausting hot air, the exhaust hose reached a temp of about 140F.
Answer: The exhaust always has to be vented somewhere. And it gets rather hot so It would be counter productive to not vent the exhaust outside. I believe that when there is water to be collected its because of extreme humidity. Otherwise it should be necessary to collect the water