Mine was OK'ish.... It kept temp fine most of the time. But for no reason it would spike to 102+ then go back to normal. It is very hard to keep humidity level. you have to open the bator to add water. The water tray is not big enough!..... Other than that it was ok. But now it is only used as a hatcher. I added 4 small tubs of water and put 4 wadded up papertowels under small vent holes. That way i can use a big syringe to add water to them without opening.