I like this a lot. However, I did not realize this unit had filters that needed to be replaced, this I don't like. I feel this product is something you buy for the convenience. Buying replacement filters is not convenient. I also should mention the foundation effect may scare some animals. My cat is scared of this and won't drink. However, my dog has no problem drinking from the fountain. So far, this unit is working great. I've had no problems with it.