Features:

• Floats on top of the water
• Thermostatically controlled never to get hot
• Completely safe when used with a pond liner or plastic pond
• Maintains a hole in backyard pond ice for just pennies a day
• One-year Limited Warranty

Editor Reviews:

Product Description:
Thermo-Pond is the world's only energy efficient pond heater! Thermo-Pond floats on top keeping a hole through the ice all winter long. Thermo-Pond uses only 100 watts of electricity. Other units can use as much as 1500 watts. That means huge savings on your electric bill! Thermo-Pond allows toxic gases to escape all winter long. Permits gas exchange can save the lives of the fish living under the ice. Saves as much as $30/month in electricity costs vs. most popular pond de-icers! Pays for itself in 2 months! Withstands temperatures dipping past -30 degrees Fahrenheit!

Rating : - Pass on this one
I bought one of these a few years ago, didn't last the winter, got another one via the warranty and that one broke even faster than the first. Do yourself a favor and spend the extra dollars for a better heater.

In Cleveland area.