How Do Tankless Water Heaters Work?

You may have a beast of a water heater in your home that holds and heats water at a designated temperature so that it is ready whenever you need it. Instead of expending energy on heating water constantly, some people are turning to tankless heaters for their Lake Worth, FL plumbing. How do tankless water heaters work? It’s simple to understand, even before you give General Plumbing a call.

The Gist

Tankless water heaters do not hold water. Instead, they house a heat exchanger that the water passes through before coming out of your sink. The heat exchanger is powerful enough to heat your water quickly. The method of heating depends on your water heater. It can be fueled by electricity, propane, or natural gas. Instead of holding and heating water constantly, tankless heaters work on-demand, which could save you money on energy bills overall.

Once you know the answer to the question, “how do tankless water heaters work?” you can choose between a point-of-use heater and a whole house heater.


A point-of-use heater is small enough to be installed in close-by, out-of-the-way places like under the bathroom sink. An advantage to this is that the heated water gets to the faucet much more quickly, which means less water is wasted while you wait for it to heat up.

Whole House

A whole house heater is usually put in one central location. They are larger than a point-of-use model, but the lag time to getting your hot water at a given faucet increases. However, you only have one large system instead of several smaller ones.

How do tankless water heaters work? They work on demand to give you hot water when you need it, and help you save on energy bills. If you are interested in learning more about tankless heaters, contact General Plumbing at (561) 771-0086.

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