...the condensation forms on the walls because of a couple of reasons:

1) The walls are cooler than the warm air circulating in the incubator. This is due to the fact that the walls are not insulated with masses of insulation. If the walls were insulated to the maximum extent theoretically possible, there would be no heat loss through the walls...the walls would be at the same temperature as the recirculating air...and condensation would be less likely to form.

2) The walls provide a means for condensation to form. If I remember my physics correctly (which, I admit, I may not... ), without some kind of "seed area" for condensation to form, you just wouldn't get condensation. I seem to recall that this "seed area" can be pretty much anything...dust, dirt, surface irregularities, etc.



With our incubators, the primary reason for condensation on the walls is reason #1. It doesn't really matter how much I circulate the air since the walls will always be cooler than the circulating air...and condensation will form on the walls (as long as the air is sufficiently humid).



I'm wondering if you are thinking of condensation forming on the insides of the egg chambers...which seems to increase during the last couple of weeks of incubation.



One of the reasons why I am happy to see condensation on the walls is that then I know that the air is pretty much as humid as I can get it.



You cannot simply say that "condensation = uneven temps" and "no condensation = even temps". There are other possibilities. Much depends upon the design and insulation properties of your incubators. In my experience with our incubators, "no condensation on the walls of the incubator" means one thing and one thing only...the humidity in the incubator is too low.

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