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Title: Worked well for two years at temps down to 15F. then failed
Review: The heater worked well initially and kept ice from forming in a 16 inch birdbath down to moderately low temperatures. The design is good, made with a heavy, painted ,solid, cast metal housing (probably zinc) with all components potted or encapsulated. No part of the unit appears corroded or damaged after two years of use. This year it has stopped working and I am waiting to see if K&H will honor their 3 year limited warranty on their well made, well designed product. I suspect that either the temperature sensing switch or the heating element has failed open circuit and there is no way to access them. I thought it was good value and may give them another try. It was just the right height for robins to rest on mid-bath!
