This immiscible 1000-watt bucket water heater warms water quickly up to 150°F (66°C) to keep water from freezing. Its automatic shut-off and a stainless steel guard mean it will not damage plastic containers. This thermostatic-controlled bucket heater is also great for fishing and hunting camps. It's designed to rest easily in a 5 gallon (18 litre) bucket. This bucket water heater is intended for use in water only.