Our house has just undergone an inspection because it has been sold. The inspector wrote in the report have a licensed plumber raise unit 18 for safety. The hot water heater unit is in the garage and sits on concrete. The unit has legs which raises it from the floor but Im not sure how many inches it is raised because the house is in another city, far away from where I am now. The house is in Texas. Is there some code which requires the unit must be raised 18 for safety? Could you cite the code if there is one, or let me know if theres a website that shows state codes? I would greatly appreciate it.