16 has a 3 way 1.9 cubic foot Dometic fridge
. Before we left for PEI we made two modifications, one we added a cooling fan to blow over the coils and two, we increased the number of shelves from 2 to 4, that is when you count the bottom as a shelf.
The addition of the fan generally keeps the inside of the fridge
in the mid to high 30's F when we're plugged in.
The additional shelves really allow us to fill the fridge
without packing things on top of each other. We do not use an internal fan within the fridge.
There was some concern that packing it so full would mean some items would not stay cold or get cold. This turns out not to be the case.
We have noticed some change in temperature when we open the door, however if the temperature device is sitting on any cold item, the temperature hardly varies at all. Often when people put a thermometer in their fridge, they are measuring the temperature of the air and not necessarily the temperature of the items.
Our fridge always contain six cans of soda, a bottle of water, a quart of milk, a quart of half and half, a pound of butter, a pound of bacon and a dozen eggs. These items, once chilled provide a lot of thermal capacity, it takes a lot of warm air to raise their temperature. A full air exchange with the inside of the trailer has little effect on the items' temperature.
The temperature gradient from fins to items seems to cool everything down without the need of a cooling fan.
We continuously monitor the temperature inside the fridge, using the Walmart's $10 transmitting thermometer.