How much replacing copper pipes should cost. Average costs and comments from CostHelper’s team of professional journalists and community of users. Re piping a house .When selecting a new water heater for your home, choose a water heating system that will not only provide enough water but also that will do so energy efficiently .Water heater type Storage Volume Gallons Efficiency EF Cost Yearly energy cost Life years Cost over years Conventional gas storage.We’re replacing a natural gas water heater in our demonstration. The steps for replacing a propane water heater are exactly the same, and those for an electric water .
Average cost with installation Tank $. gallon tank Tankless $, .