My first Microswiss heater lasted 5 months and worked great until it stopped heating. I purchased 2 more as replacements to use on my K2 plus. They seem to last about as long as the original equipment from Creality, and I now view the heater more as a consumable part. They don't last forever, but during their lifespan they work really well. I like the Microswiss heater better because it is much easier to replace and the screws do not come loose.