The thermostat on this bird bath heater works very well, it doesn't start to heat the water until the temperature is close to freezing, just as it's supposed to do. At temperatures in the teens and 20 degree range it is able to completely melt all the water in the bird bath. The coldest we have been so far is 6 degrees and at this temperature it only melted a hole in the center leaving a thick ridge of ice around the edge. The manufacturer claims that it "maintains open water, even in sub-zero temperatures", but I doubt that it will do more than melt a small hole.
Bumpy on top and flat on bottom of De-Icer. PROBLEM IS: IT FLOATS ON TOP OF THE WATER unless weighted down by a heavy rock on top of where white electric cord enters the white De-ice to make it rest on the bottom of the birdbath. 11-03-2022. Mgb.
Works as advertise Now the birds will have fresh water for the winter
This is the second one of these I have owned. The product works well and definitely keeps the water from freezing. It is also very easy to clean. My only complaint is that the cord is very short, so depending on the way you have your birdbath set up, you have to position the heater carefully to make sure it stays submerged. Overall, though, a very good heater.
Very large and sturdy heater. Keeps my fountain ice free with no effort !
I really wanted this item. Tried it all last season, and I fought with its position to keep my birdbath from freezing entirely.
Only used for a couple of months when the surface coating began to peal and the inside metal started to pit and corrode. Shorted out.
I now have three of these great products. It is amazing to me, how much the wild ones drink in the winter. A 24" plant saucer on the deck holds about 4 gallons. Every morning I add 2 gallons of water. The deicers from last year kept the water from freezing through the -14 degrees of POLAR EXPRESS! The snow was piled HIGH around the saucers and the water was open. SO I added a third deicer this year. When I bought this deicer I bought a 15' outdoor extension cord for it. I was stumped when the water froze. Contacting K&H a very helpful customer service person suggested the freezer test: placing the deicer into the freezer for an hour. Then plug the unit into a direct outlet to prove whether it is defective or not. It heated up immediately when plugged in directly. It was a defective extension cord! Imagine that. THIS DEICER IS A PERFECT SOLUTION FOR THE WINTER MONTHS!
I started using this at the beginning of November 2019. By December 4th it began peeling. I'm not sure this is good for what it was intended for either. The water is just above freezing so not much more beneficial than the birds eating snow. I like the idea of this product and I think there's something better than this one.