Green Plumbing

Answer: D -The choice between tank-type and tankless water heater is dependent on a number of factors specific to the home occupants. Tank-type water heaters cost roughly half as much as tankless heaters to install, but usually have higher energy costs. Tankless heaters are generally more efficient for households with low average daily water use. Tank-type heaters run the risk of running out of hot water at peak usage times, which is not the case with the on-demand nature of tankless hot water supplies. Tank-type heaters take up more space and must be installed indoors; they also have shorter lifespans than tankless heaters.