HagenKB

AquaClear Heaters Condensation

I recently purchased a 100W AquaClear Pre-set Submersible heater (ART #A-712). After letting it sit unplugged in a 70 deg F tank, I turned it on and immediately noticed the formation of condensate droplets inside the heater. I returned it for another one

I recently purchased a 100W AquaClear Pre-set Submersible heater (ART #A-712). After letting it sit unplugged in a 70 deg F tank, I turned it on and immediately noticed the formation of condensate droplets inside the heater. I returned it for another one
The problem of condensation from a heater element is rather common. In general, it is the result of the drying process of the ceramic element, since it is heated it will remove all humidity from the element, but when cooled, there is a chance that atmospheric humidity will enter the ceramic core rather rapidly. The environment of the Italian area where the heaters are manufactured and assembled is quite humid, so when the ceramic core is sealed within the watertight tube, any humidity that the ceramic core had within it was trapped. When the unit is heated again, that moisture naturally is expelled and will occasionally show as condensate on the tube. It has been my experience that the droplets slowly dissipate and it is not an indication of a failing heater.

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