Return to replace hot water heater. Cut out and removed existing water heater installed a brand new 50 gallon gas water heater. After installation all connections were checked for water leaks and no leaks were found. Gas line was tested and no leaks are present. filled tank and fired up the burner. Monitored system until satisfied and all faucets and showers were bled. A co detector was installed in the boiler room. System is fully operational repair is completed.