How Does An On Demand Water Heater Work?
What Are Alternatives to Heating & Storing Water in a Hot Water Tank?
Tankless water heaters are a smart and convenient way to save space in your home and can even help you save on energy costs – but how do they work and are they right for you?
As a start, it may be helpful to understand the type of water heater most of us are familiar with and how tankless water heaters differ.
Tank water heaters
Traditional storage tank water heaters have been a fixture in homes for generations, with little in the way of technological innovation. That’s because they’re affordable and easy-to-use. As their name suggests, storage tank water heaters simply heat and store a large quantity of water in a big cylindrical tank until it’s needed. And as it’s used up, more water is introduced to the tank where it’s heated and kept on standby.
Heating: the next generation
Unlike storage tank water heaters, tankless systems heat water on demand using a heat exchanger. Activated by incoming water when you turn on your shower, bathroom fixtures, washing machine, dishwasher or faucet, the tankless water heater efficiently heats cold water at a pre-set temperature with the help of a propane or natural gas-fired burner and a heat exchanger. Water is heated and exits from the hot water outlet pipe to where it’s needed in your home.
A tankless water heater adjusts as needed to make sure the required hot water temperature is achieved and maintained. Once hot water is no longer needed from a faucet or appliance, cold water stops entering the tankless water heater and the appliance turns off until it’s signaled to turn back on.
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