My clients were interested in flushing their water heater it is an RL95 unit. This unit is seven years old and has never been flushed. I gave them the option but I strongly advised that we didn’t due to concerns of leaks forming, which can happen after flushing a tankless unit that hasn’t been serviced annually. TE would not have been responsible for any issues that arise after flushing and the service would hold no warranty. I replaced a leaking vacuum breaker on the front hose bib. We weren’t able to turn the water on, but once it gets warmer out, I want my clients to try this hose and let me know if the issue has been resolved.