This is our second one. The first lasted about six years. It is expensive but we will continue ordering them as long as we can afford to. Our kitchen hot water faucet takes forever to bring in hot water so we use this product a lot; to heat our coffee cups, to run very hot water to soak food pans, etc. It is all about the convenience. I did not get a filter with the first one and there is a filter installed on this one so perhaps it will last longer this time.