I am supposed to write a review, but I cannot write a meaningful review until we are well into the freezing weather period. The wiring looks to be technically appropriate and the instructions are clear and emphasize the need to use caution. I have a set of hot and cold water pipes that go from the basement to a second floor bathroom. They tend to freeze at least once a year, even though insulation was added a couple of years ago. They go up an outside wall. There is an area at which I can have access, above the basement. I am hoping that this will safely generate sufficient heat to avoid a freeze. I will update this review if the pipes freeze or when we are beyond the freezing period.