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JANUARY JLC 1997 by John D. Wagner Tankless and point-of-use heaters are an economical way to supply hot water to remotely located sinks and showers T Water Heaters On-Demand he standard plumbing package for most homes includes a single domestic water heater with a capacity to heat and store between 40 and 80 gallons of water at temperatures up to about 140°F. While this volume of hot water can easily supply several fixtures and appliances simultaneously, the cost of heating and storing such a large volume of water is high. And while most water heaters are centralized, some fixture groups, such as kitchens or second-floor bathrooms, are located comparatively far away from the heater. This results in long piping runs