Tankless water heaters have always been full of promise. By heating water only when you need it, the suitcase-sized units could potentially save homeowners lots of energy and a bit of storage space, ...

If you’re looking to replace an aging (or failed) water heater, particularly a standard gas or electric one, you’re in luck. Chances are good that any newer model will be more energy-efficient than ...

Also known as demand-type or instantaneous water heaters, tankless water heaters are similar to conventional water heaters in that they use gas, electric resistive, or heat pump technology to heat ...