Allied Heated Pet Bowl is great for year round use. Keep water ice-free in winter features an easy to remove heating element after winter season. It is low wattage and themostatically controlled. Has a capacity of 1.25 gallons.
Keeps water ice-free
Thermostatically controlled, with foam installation for energy efficiency
I bought this 5 years ago for my outside cats and dogs. In the summer i use just the bowl...in the winter i connect the element and it keeps the water from freezing. Its so great that i'm now ordering another one for my chickens!!!