The unit fluctuates on/off a bit more than I think it should but not so much that it is a nuisance. A bit more insulation might keep the temps more consistent. The unit is only in Centigrade which isn't too big of a deal but it's just not intuitive on what 27C means to us people in the U.S. Also the temp of the unit from top to bottom has a 3-4 degree shift! Quite huge in my thinking, so you need to be aware of this especially if you are doing anything that requires tight temperature control. I would suggest using a themometer to double check the top shelf and bottom shelf temps against the number on the unit. The advertising says a .5 degree/centigrade shift. Not accurate in our unit.The dealer was EXTREMELY helpful in getting the unit out as soon as possible. Five stars for the dealer in responding to our request to get it to us as quickly as possible.Overall the unit functions well. Just need to be aware of temperature difference from top to bottom shelf. We are enjoying the unit as is.