How Does an Electric Tankless Water Heater Work?

Are you tired of running out of hot water while taking a shower? Then an electric tankless water heater is the perfect solution for your needs! Tankless water heaters are a great way to have constant access to hot water, and they can save you money over time.

In this article, we’ll explain how electric tankless water heaters work, as well as some common issues associated with them. So read on to learn all about electric tankless water heaters!

How Does an Electric Tankless Water Heater Work

What is a Tankless Water Heater

Unlike tank-style water heaters, tankless water heaters do not contain a stored supply of heated water. Instead, these energy-efficient systems use an electric element or gas burner to heat the incoming cold water as it passes through a special filter inside the unit.

This means you get hot water at the tap when you need it without having to wait for the full tank of heated water to be replenished—which saves time and energy costs. Tankless units also provide more consistent temperatures than conventional storage tank models, meaning no more scalding or lukewarm showers!

How Tankless Water Heaters Work

These tankless systems work by heating the incoming cold water as it passes through the unit. As soon as you turn on the faucet or hot water tap, the built-in sensor will detect an increase in flow rate and will activate the heater.

The heater utilizes either gas or electric power to rapidly bring the temperature of the flowing water up to your desired temperature setting. Once you have finished using hot water and close the tap, the sensor will detect a decrease in flow rate and shut off the heater automatically.

By eliminating standby loss associated with conventional storage tanks, tankless heaters can help reduce your overall energy costs while still providing an endless supply of hot water for your needs.

Heats water directly without using a storage tank.

Tankless water heaters directly heat the incoming cold water as it flows through the unit. This process is done using either a gas burner or an electric heating coil, making it much more energy efficient than the conventional water heater.

Not only does this system help reduce electricity costs, but it also eliminates the need for bulky tanks that take up valuable space in your home. The flow rate of these units allows you to have hot water on demand at any time without having to wait for the storage tank to fill back up after use.

The constant flow of hot water.

Tankless units provide a continuous flow of hot water at a rate of between 2 and 5 gallons per minute. This allows you to have hot water immediately available when needed, and never run out during showers or other tasks.

Additionally, gas-powered tankless heaters can produce higher flows than electric ones, so you don’t have to worry about running out of hot water with multiple sources in use at once.

Achieve the desired temperature setting.

A tankless water heater features a front-facing panel that allows users to control the settings, such as the gas valve, mixing valve, and amount of water flow. This ensures that the desired temperature setting can be achieved while still being energy efficient.

The electric tankless heater panels also allow users to adjust their electricity usage, which helps manage electric and water bills.

Common issues with tankless water heaters.

Despite their advantages, tankless water heaters can come with some common issues. System overload is one of the most common issues as multiple hot water applications can quickly overwhelm the unit and cause it to shut down entirely. This can be avoided through mindful use or preventative measures.

Another issue is blockages which occur when the air supply to the heater is blocked, causing problems with venting and putting additional strain on the system. Lastly, ignition failure can be caused by issues such as faulty wiring or low-voltage power supply.

All of these issues are important to consider before investing in a tankless water heater as they could lead to costly repairs or replacements down the line.

Routine maintenance keeps water flowing smoothly.

Regular maintenance of your water heater is an important part of ensuring that it works efficiently and lasts longer. If a water filter is not regularly maintained, minerals such as calcium and magnesium can build up over time, creating a scaly buildup inside the tank which affects its function.

To prevent this from happening, homeowners should check on the consistency of the incoming water and change or clean their water filters when necessary. This will ensure that their hot water tap continues to produce hot water on demand without any interruptions due to mineral buildup.

Regular maintenance also helps to reduce energy costs by keeping your electric or gas tankless water heater running at optimal efficiency. Investing in regular maintenance for your electric or gas tankless water heater can help reduce energy costs and keep your hot water running smoothly.

Contact a professional for tankless water heater issues.

Tankless water heaters are becoming increasingly popular for their energy efficiency, but unfortunately, they can sometimes experience problems that require the assistance of a professional plumber.

Low flow rates, inadequate hot water supply, or strange noises coming from the unit are all signs that something’s wrong and requires an experienced eye to properly evaluate and diagnose the issue.

Professional plumbers can easily assess any problem you’re experiencing with your tankless water heater and provide you with the best solution. They’ll be able to identify if it’s something simple that you can fix yourself or if more complex repairs are necessary.

Don’t risk further damage by attempting to repair it yourself: contact a professional today to ensure your tankless water heater is working optimally again!

What Kind of Tankless Water Heater Do I Need?

Gas or electric? It’s important to understand the differences between the two and determine which one is best for your home.

A gas tankless water heater uses natural gas or propane to heat the water, while an electric one uses electricity. The flow rate of each type of heater should be evaluated in order to satisfy your household needs and provide enough hot water on demand.

If you only need a single faucet, then an electric model placed underneath the sink will do just fine. However, if you need a whole-home application, then you’ll want to consider the energy costs associated with running either type of tankless water heater.

When choosing between gas vs electric tankless hot water heater for your home, consider factors such as flow rate, installation costs, and energy costs before making any decisions. This way, you can be sure that you have chosen the right kind of tankless heater for your needs.


In conclusion, when deciding between a gas or electric tankless water heater for your home, it is important to consider the flow rate, installation costs, and energy costs before making any decisions. Electric tankless water heaters are more energy efficient than traditional storage hot water tanks, while gas models require more installation work and cost more upfront.

However, both types of tankless heaters can provide an endless supply of hot water on demand and offer a much better alternative to conventional storage tank water heaters. With the right knowledge and understanding of your needs, you can make an informed decision about which type of tankless heater is best for your family.