Tankless needing yearly flush upon arrival. Customer stated the tankless was needing a maintenance done. Customer stated the tankless was sometimes fluctuating water temperature when they run any shower. Informed customer this could help with that issue but there is no guarantee it would completely fix that issue. Also informed customer due to age of tankless we would not be responsible for any issues that could possibly happen after flushing. Gave customer estimate, customer approved estimate. Flushed tankless for an hour and then flushed the tankless out to get chemicals out of it. Fired tankless back up and checked to make sure the customer had hot water. Tankless is working properly and producing hot water upon departure. There was a lot of condensation build up happening on the gas line but no active water leak
