I've had my Involve H-Wave hot water dispenser for a while (months) and my mother has had a similar product for years. We both LOVE it! Great for a quick hot cup of tea, for rinsing stubborn greasy food of a pan, getting water that's hot enough it boils quickly when needing a quick meal. And they have lasted. I highly recommend this product! I don't know what I did before we got it. The only negative is that it is a little tricky to install.