Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: does it refill from the top or do you have to take it apart and turn upside down, carry to sink etc...?
Document: I have increased it's rating to 4 stars. The manufacturer recommends that you use distilled water with the unit, and I concur. Also the manufacturer warns that condensation forms on the bottom of the clear plastic water container, and may drip on the rest of the unit when you are refilling it if you don't wipe it off. (To fill it, you take the clear plastic piece off the machine, turn it upside down, fill it, then turn it right side up to replace it.
These all take a minute to do. By evening, it's ready for use again.It makes some loud whirring noise if the clock is not set (blinking 12:00). Just turn off unit. Turn it back on and set the clock then turn on at the highest level before adjusting to preferred setting - that makes the noise go away.
I was pretty excited to get this guy in the mail, I have another large humidifier unit that is a pain to clean and refill (but performs great). I was hoping this would be a convenient bedsite unit, and for the most part it is. It's a breeze to refill and clean, but there are some serious design flaws that prevent it from being a great product.
My apartment is very dry and this product has help a lot. I like the cycle feature, it helps keep the humility steady through out the day and reduces the amount of times you have to refill the humidifier. I use it in my bedroom and is just fine for a small room. This does put out quite a bit of moisture, so when the mist is on the maximum setting there is some condensation.
This has a very small footprint, so it won't take up a lot fo space if you keep it on your desk, like I do. The water tank is about as spillproof as it possibly could be, too, so no worries about dripping all over electronics or important paperwork.
You can turn off the nightlight and backlight display so it gives off less light than a digital clock radio. It runs silently (I can't ever hear it is on, the only way I know is by the mist coming out). It has several different mist functions.I highly recommend this product!
I purchased this unit to help with my dry eye at the office. It worked the first time, but wouldn't function correctly the second. There are three buttons on the front; one of them will turn the unit off and on. It does make mist, but it is stuck on the high setting. There is a flashing clock (digital) which you are supposed to be able to set, but that does not work, that is, you cannot set it, it just keeps flashing.
Easy fill, Easy carry, Easy clean. No filter to get moldy. Works all night to humidify the bedroom air for better sleep.
I give the Crane Personal Cool Mist Humidifier model EE-F949 two stars. The motor is not strong enough to push the mist up high. Even on a low setting, condensation will happen. This will in turn cause mold growth and damage to your furniture and lungs. The condensation gets into the machine and overworks the already week motor. I only got less than a year of usage, and it burnt out....plus it plugs in but still uses batteries that get corroded with the moisture.
This humidifier lasted only 2-1/2 months. We cleaned the machine per the instructions but the misting had stopped. When I took the machine apart the insides were completely rusted! Who ever heard of a humidifier that had rusted internal parts? A complete waste of money.SL - Colorado
Answer: It's a simple refil. You lift the tank upward, flip it over and unscrew the stop plug. It's nothing to concern yourself with. The tank is big enough to run on max for approximately 12-14 hours or more.