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

Input:
Question: Is the tank filled from the top?
Document: Removable tanks can also crack and leak with age and then this can throw off the vacuum arrangement that keeps such machines from overflowing water on your floor. With this Essick model, none of that hassle is necessary. It also has a decent capacity so as not to require being filled up as frequently as many other models.On the downside, this is not a well crafted machine. It's essentially a big open tank with a fan plopped on top of it.
Very flimsy construction. Almost impossible to seat top fan section to bottom water tank and get float aligned. This is a design that should not have been approved to manufacture. When the float does not contact the very sensitive switch to acknowledge water filled, it does not operate. You can have a full tank of water that the sensor does not see and thinks its empty.......will not run. Pay a little more and get a better one. I did.
My apartment is approx. 1200 sq feet. I originally had a Hunter Evaporative Humidifier Model 34357 and loved it, but had to fill the tank every 12 hours. I had it for years and one morning when I filled the removable tank and was walking back, the plastic handle broke and it smashed on my carpeting. Needless to say almost 3 gallons of water and chemicals were  all over my floor and furniture, not to mention trying to keep the dog out of it.
Its nice it has a big tank but the top of the unit does not fit real well on the bottom. There fore to fill you need to pull the front screen off and fill through there. Only has two speeds one very high and loud one very low should be a third int he middle.
I would never use the high setting.I think for a larger home or if a higher humidity > 45% is desired you should choose a larger/ different unit.2)It's essentially a big open tank with a fan plopped on top of it.
Once assembled, no need to disassemble until cleaning - thus no concerns about the fit of the top portion to the holding tank. Make sure you install the filter in the correct direction. One negative comment speaks to 'the majority of air just bypasses the wick&#34; - that is a case where that person installed the filter backwards, I guess?
After trying 5 different humidifiers over the past couple of years, I am settling on this one.It doesn't look that great (in fact, it's pretty darn ugly), but it is the only humidifier I've found that meets all my requirements:  huge reservoir, top fill (no taking a stupid, little tiny tank to the sink every 8 hours), humidistat, quiet, auto shut-off, evaporative (no white dust).
The smaller one does not have wheels, so you can't really move it once it is filled. We had this humidifier for years and it took a beating, because we moved two or three times and it got pretty banged up.
This unit is effective at humidifying a large room in our home (when the unit is filled properly...more on that later) but it is not attractive or very solidly built. When used properly, it is functional, nothing more, nothing less. Unfortunately, I found out the hard way that this machine punishes you in a sneaky way if you overfill the reservoir. It turns out there is a hole in the back that drains excess water.
I have had this less than a month and it is already broken. It keeps flashing that it is empty, even though we filled it, the fan won't let us adjust it from low speed, and the housing is very hard to put back on. I am waiting to send it back and will purchase something of better quality. I expected much more since it is a name brand product.
Answer: Yes. The output grille (the slanted one in the photo) pops off and you fill it by pouring water directly into the machine through the output grille.