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Probe vs. Float low water cut off
I’m looking to hire a contractor to install a new oil - fired steam boiler. I want it equipped with a low water cut-off. I believe there are two types: float or probe. Are there any other types I should consider? From what I have learned, I think I should go with the probe, but I’d like some input.
First of all, I have to be away from the house for weeks at a time and there is no one in the house to do the 7 – 10 day maintenance that I have read the float type requires. I have read that the probe type only requires maintenance on an annual basis. Even if the probe requires more than annual maintenance, it seems like my best, possibly my only, choice.
Second, I have read that adding water to the boiler causes oxidation, which in turn shortens the life of the boiler. So as the float requires more frequent adding of water, the probe would seem to be the better choice in terms of boiler life.
As I think about the second reason, I’m having a hard time finding a reason for anyone to install a float mechanism. The probe seems to be clearly the better choice, but there is a lot I don’t know.
I will be grateful for all comments.