The patent design of the Farm Innovators 250 Watts Bird Bath Heater / De-Icer will impress any bird lover. Constructed of cast aluminum, it withstand the harshest of climates. Recommended for the extreme cold, the de-icer is thermostatically controlled to dictate efficiency. ; This item will require a professional installation as it needs to be grounded. ; The wires need to be installed through a pipe with no exposure.