Called out today due to the kitchen not getting hot water Tried to reset the unit in question but cold not get the unit to reset unit tried to relight but could not Unit gave an error code of f09 Vent didn’t appear to be blocked and checked the condensation drain and it wasn’t backed up Found the blower on the inside of the unit to have a leak on it that appear to have been dripping for a long time the thermal pile is rusted will need to have at least 3 people to move old heate rour and new heater in if customer excepts quote to replace heater Need to come up with an estimate to replace the unit