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Key Differences Between an Electric Tankless Heater and a Gas Tankless Water Heater

When it comes to choosing a water heater for your home, you’re faced with a crucial decision. Do you choose to go with an electric or gas tankless water heater? Understanding the distinctions between these two options can help you make an informed choice that suits your needs, budget, and efficiency expectations.

Design and Function

Electric tankless water heaters and gas tankless water heaters vary not only in their energy source but also in their design and function. Electric units rely on electrical heating elements to heat water as it flows through the unit, while gas units utilize a burner to heat the water directly. Regardless of the style, one similarity that these two tanks have is that they are both designed with one job in mind…to heat up your water.


Efficiency is a significant factor to consider when evaluating water heaters. Electric tankless water heaters are known for their impressive efficiency, typically operating at around 98 percent or more efficiency. In contrast, gas tankless water heaters are slightly less efficient, ranging from 80 to 85 percent.

What does a better efficiency rate look like on your utility bills? Well, since electric heaters waste less energy, you can expect it to translate into savings on your utility bills.

Flow Rate

Gas tankless water heaters have a clear advantage in terms of flow rate. They can provide a higher Gallons Per Minute (GPM) output compared to their electric counterparts. Most gas heaters can deliver at least 8 GPM, with propane units reaching up to 11 GPM and natural gas units offering up to 10.6 GPM. This makes gas tankless heaters an ideal choice if you have a large household or require a substantial supply of hot water.

Installation and Maintenance

The ease of installation varies significantly between electric and gas tankless water heaters. Electric heaters are generally more affordable and straightforward to install, making them a convenient choice for many homeowners. At the same time, gas heaters can be more challenging and costly to install due to the need for gas lines and venting systems.

Maintenance is another factor to consider. Gas tankless water heaters require more maintenance than their electric counterparts, primarily because of the combustion process. Regular inspections and cleaning are necessary to ensure their continued efficiency and safety.

Overall Running Cost

The running cost of a water heater includes both installation and ongoing operational expenses. Electric tankless water heaters are typically more cost-effective to install because they do not require a gas vent, simplifying the installation process. However, gas tankless water heaters can offer substantial long-term savings. Despite their higher initial purchase and installation costs, they make up for it with lower monthly operating costs.

The Bottom Line

Still not sure which water heater will be the best fit for your home? No worries, visit the Confluent Solutions site today, and one of our team members will help assist you in the decision-making process. Plus, not only can Confluent Solutions help you pick out an adequate tankless water heater, but we can also offer affordable and professional installation services.

Contact us today for a quote!

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