Found handles on both shower valves were installed upside down. Pulled off and turned the right way now hot is hot and cold is cold. Found whole house has low water pressure. After talking to customer, he is aware of house having low water pressure. Found one water meter on the outside of the house and one water meter in the inside of the house. Took water meter on the inside of the house apart turned on water. Still had low water pressure coming from city. Try to contact Roseville Ohio city. Was unable to get into communication with anyone. Spoke to customer again. I will send him an estimate, but he wants to talk to the city if it’s their issue to take care of. Main issue is there’s low water pressure coming from city line. And there’s no reason for a second meter to be inside of house. Still have low water pressure before meter. City tied back on to old galvanized waterline going into house.