I'm guessing it's because cold sinks and if it's opened from the top, the least cold will escape.
If you don't want the freezer to get smelly or moldy the lid should be propped open a little. If you can still fit the fridge on, then fine. However do NOT store a fridge lying down - only in it's normal orientation, or you will have compressor problems when using it again.
75 percent of Americans prefer a side by side fridge freeze over a top freezer model. Since this is the modern way, and the freezer will fit much more in it when it is side by side, as well as the fridge, it has more shelves, and looks better than the top freezer models.
The advantages are that the freezer is usually bigger than a top-freezer, and the refrigerator side is easier to.
Most people own top freezer refrigerators. Only upper and middle-upper class people usually have side by side refrigerators.
Deep freezer is just a term for a style of freezer, in that's it's generally dedcated as a freezer without a refrigerator section. It may also be called `deep' because the freezer box is usually deep so that it can hold quite a bit of product. Most deep freezers tend to have the opening in the top and can be a few feet wide and usually a bit longer, and around 2 1/2 to 3' deep. Of course, there's varoius makes and models from which to choose.
Freezer on the bottom has always been hard to get to for me, especially for heavy items. I'd stick to top-placed freezers.
on the right side at the top
It's not always. Many freezers are on bottom or side-by-side with the fridge.
Both models are very user friendly the side by side option normally offers more storage space.
Frozen bulb would explode when heated. Side by side fridges have light bulbs in freezer compartments and do not blow up. Same is true for bottom freezer units with a fridge on top. Top freezer units usually don't have a lightbulb as it takes a lot longer to recover the cold temperature than bottom or side units.
The side-by-side likely gives you a better use of space in the freezer compartment. Given that we use a lot of frozen food these days, it's nice to have it easily accessible. The top/bottom freezers are usually a hole with a shelf in the middle, so stuff gets lots easily if you keep the freezer full. The side-by-side is easier to keep organized. In some refrigerators, the cubic inches of freezer space may vary, but check the way the space is set up in terms of shelving and compartments and how that suits what you need. An advantage of a top / bottom model is the energy usage - as long as the freezer portion is on the bottom. As the cold air settles it will naturally accumulate in the freezer compartment reducing the wear on the compressor. Side-by-side lets you keep your most frequently used items at the top of both the freezer and the refrigerator for convenient access.
It depends on if your model is a side by side, built in, bottom freezer or top freezer. The space can range from 11 to 21 cubic feet of usable space.