Instruction: Answer the given question using the supporting document.

Input:
Question: Does the hot air blow from vents in the sides of the chamber or is it a mesh-covered opening on the bottom of the chamber?
Document: Each use (over a dozen so far) left close to 100 un-popped corn kernels. Extremely wasteful.+ Air vents atop the dome allow hot air and small pieces of popcorn to escape and blow about.
It's nice to have another similar appliance to compare to since it can offer some good insight for the buyer regarding buying choices.In design, both poppers appear similar to some extent. The popping chambers are the same dimensions on both (3 1/2" D x 3 " W). The chambers themselves do vary in design in that the Presto sends out all of its heat/hot air from a circular vent on the bottom of the popping chamber.
I like the 'brushed steel' finish...much better than the cheesy plastic round poppers which brand I won't mention.I purchased primarily to roast green coffee beans however, I read EVERY review and even Googled & YouTubed this model to find the wattage output ...NOTHING anywhere...but one reviewer did mention this T-Fal popper did have inside the chamber  bottom side vents..........H U R R A Y!
The T-Fal forces the hot air in a circular manner, and creates a spinning motion for the kernels. The Presto is more of a direct upward flow of air. So depending upon your needs, this difference may or may not be a big deal.On a side note in regards to unpopped kernels, I am referring to kernels that remain in the chamber and not the ones that pop out of your chute.
Hot air comes in from the sides through this circular vent area.In testing the T-Fal before actually popping corn, I found the air flow upwards seemed at a much lower velocity then the Presto as well as the heat wasn't anywhere as intense as on the Presto. Good fast air flow and high heat is what gets the job done quickly in a hot air popcorn maker.Much like the Presto, the cover of the T-Fal acts as a chute for the popped corn to escape into a container.
That's what we will do when we use this popper.Bottom LineThis is a a well-built machine that is easy to use and gives good results. I like the on/off switch on the side rather than the "plug-in to turn on and unplug to turn off" methods some machines use. The results were what you would expect from an air popper, lots of popcorn and few unpopped kernels.
The benefits are that it has a switch that turns it on/off (our other popcorn popper does not), and the style of heater (vents around the edge) means it could be used for roasting coffee/other things, but that's about the only good thing.
This product was junk. I used it twice and then would not allow me to return. The popcorn stuck to the bottom of the popcorn popper. It was terrible.
I would however suggest that you keep the pieces in the top rack so the heating element doesn&#8217;t damage them. To use all you have to do is remove the cap and pour in choice of popcorn kernels up to the max fill line. It has a cap that pops off so you can pour the kernels right into the popping chamber. As long as you don&#8217;t overfill there is really no way to burn the popcorn. It should end up perfect every time.
If looks are the only criteria, this is one of the best poppers out there. But of course, there's the question of how well it pops the corn. In this department this little cutey comes up short. You need a big bowl so the unpopped kernels don't end up all over your counter or floor. And it leaves too many unpopped kernels in the bottom as well. But for the price it looks great and works ok.
Answer: The hot air blows from vents on the sides, all the way around the unit.  It works well, worth every $.