How much replacing a water heater should cost. Average costs and comments from CostHelper’s team of professional journalists and community of users. With all needed .Water heaters are the second highest source of energy usage in the home. A new ENERGY STAR certified gas storage water heater uses percent less energy compared to .New gas lines must be installed if a new appliance such as a gas furnace, water heater or stove is added to a property. Gas lines may also be extended outside for .HomeAdvisor’s Tankless Water Heater Cost Guide lists pricesociated with installing or replacing a tankless water heater including labor and materials, as reported .
Tank vs. Tankless. Average cost with installation Tank $. gallon tank Tankless $, .Labor. Plumbers typi.y charge $ $ per hour and can typi.y install a water heater in a day labor hours , for a total labor cost of $ $.. Curious about water heater prices? Whether installing a gallon gas water heater, an electric unit or a tankless water heater, prices can vary greatly..