Arrived on site customer stated that they would like their tankless flushed. After inspecting we found that the AO smith tankless water heater is 7 years old. MyGuy plumbing does not recommend flushing unit due to unit being 7 years old and never flushed. MyGuy plumbing did write up estimates for customer if they did want to move forward with adding a filter or flushing tankless. For today customer would just like all options emailed over to them