We installed a new Rinnai Tankless water heater. We installed isolation valves for access to do proper maintenance, we also added an expansion tank to help prevent build up of high pressure in the system. We installed a new a descaler to help reduce lime and all waters scale. New shut off valves were installed on water and gas supply lines going to the tankless water heater. We installed a new sediment trap on the water heater to prevent sediments in the gas pipe from getting into the tankless water heater.