Do the newer electronic low water cut-offs need maintained as the old float type did?
They do not require draining as the older float type did. The older float type needed to have water drained from them about every two weeks. The water was drained until the it ran clear. The newer electronic probe type still requires annual maintenance. They should be pulled out every year and the probe, the part that is submersed in the boiler water, should be cleaned, tested and reinstalled.
