I replaced the water boiler on July 24 2021, which was manufactured in 2017 from "ez flow". However it has stopped igniting since Mar 5 2023. I kept trying to call "ez flow", but just getting the voice message. The plumber from another company said it had the old system already, so it costs a lot to replace a part to fix it. The new boiler with the old system has lasted only one and half years with $1800, but no responsibility and unprofessional.