Customer stated that it’s been two years since tankless was installed, and it was needed to be flushed. Customer price to flush tankless and customer agreed. Went ahead and flush, tankless and tested. There were no leaks on tankless at this time and also tankless seem to be working as it should. Also gave customer quote to install new service valve and supply line for dishwasher and also correct drain for dishwasher. Cleaned up work area. Will recommend doing dishwasher work day before dishwasher gets here.