Unlike their traditional storage tank-based counterparts, tankless water heaters are capable of providing a constant flow of hot water on-demand. The concept is relatively simple: The heaters function by coupling a modulating burner with a high-efficiency heat exchanger.
Given their higher efficiency, these heaters are an effective way to save on energy consumption: End users can typically conserve up to 40% in annual energy costs versus tank-type water heaters; making them attractive to both eco-minded and budget-conscious customers.