Pros and Cons of Tankless Water Heaters

Tankless water heaters are one of the best innovations of the 20th century and are quickly becoming the standard for new home construction because of their many advantages. Both tankless and traditional water heaters have benefits and drawbacks that affect your hot water usage.

The Difference Between Traditional And Tankless Water Heaters

Tankless units heat water directly without storing it. So, when someone turns on the shower, cold water enters the tankless unit, passes through the gas- or propane-powered heat exchanger, and is instantly heated. This eliminates the need to store water and delivers a constant hot water supply.

In contrast, traditional water heaters are large storage tanks–usually ranging in size between 40-80 gallons. The water inside the tank is continuously heated, even when you’re not using any water. And if you’ve ever ‘run out of hot water,’ it’s because you’ve drained your entire storage tank’s worth of hot water, and you must wait for the tank to heat up again.

Pros And Cons Of Tankless Water Heaters

Now that you know the difference, here are the pros and cons of going tankless.


  • They Are More Energy Efficient. According to the Department of Energy, they are 24-34% more energy efficient than conventional storage tank water heaters. This helps improve the environment and saves money by lowering your monthly utility bills.
  • They Have A Longer Life Expectancy. Most tankless units have a life expectancy of more than 20 years, significantly longer than traditional water heaters, whose lifespans range from 8-12 years on average.
  • They Supply Endless Hot Water. Because they heat water instantly, you never have to worry about jumping into an ice-cold shower again. As soon as you turn on your faucet, you’ll have hot water at your fingertips.
  • They Require Less Frequent Maintenance. The rule of thumb is that all tankless units need a flush at least once a year, compared to traditional units, which need to be flushed every six months.


  • Higher Upfront Cost. Tankless water heaters cost more upfront. Remember that the advantages in efficiency and lifespan, plus rebates from your local propane company, will make up for this difference in just a few years.
  • The Size Is Critical. Tankless units come in different sizes to handle different flow rates. If you order one too small, you may run out of hot water. Luckily, Euliss can help you calculate the correct size. We carry several models that can handle multiple appliances running simultaneously.
technician adjusting tankless water heaters

Euliss Is Your Trusted Supplier Of Tankless Water Heaters In Asheboro, North Carolina

If you’re still on the fence, continue your research by reading our Ultimate Guide to Tankless Water Heaters. We can help you find the best model for your needs in Asheboro, North Carolina and can even help you get all applicable rebates! Get in touch when you’re ready to chat!

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