An ENERGY STAR® certified tankless water heating system is an efficient way to heat water, providing a constant supply of hot water only as it is needed for timely convenience, reduced energy use and space-saving design.

Unlike a storage tank water heater that keeps a large volume of hot water ready to go at all times, tankless water heaters provide the amount of water you need, only when you need it. When hot water is turned on, cold water travels through a pipe into the equipment and either a gas or propane burner or an electric element heats the water that is distributed throughout the home. Tankless water heater fuel availability (electricity, natural gas, propane) varies across Canada.

A cross-section diagram of a tankless water heater, with labels: High-efficiency heat exchanger transfers heat into recirculating water, sealed combustion burners for efficiency, condensate to drain from combustion process, cold water in, hot water to tap(s), sealed combustion venting to exterior.

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