Tankless water heaters pros and cons

tankless water heater
Image Credits: Flickr

Tankless water heaters are those kinds of water heaters which instantaneously heat water as it flows through the device.  Some other names by which such devices are referred to include in line water heaters, continuous flow water heaters and others.  They have taken the market by storm ever since they were launched. But like any other thing, there are both pros and cons of using these water heaters. If you are considering purchasing a water heater then you must be familiar with both the negatives and positives.

This article will help you decide whether to buy them or not by assessing tankless water heaters pros and cons:

Pros of tankless water heaters:

  1. Low electricity consumption: One of the greatest benefits of having them is that they help to cut electricity consumption by a whopping 40% inspite of their high initial cost. Moreover they are activated only when you turn on the hot water tap in your house. This means that you are further able to save more costs as compared to traditional water heaters.2.
  2. Extended life: They last longer than tank water heaters and are more effective than them as well. The warranty with which they come is about 6 to 15 years. This is another positive related to them and thus another reason to consider buying them.
  3. No risk of flooding: There is no risk of flooding due to broken tank in case of tankless water heaters and this is something that too acts as a positive feature and is something that you don’t get in the traditional water heaters or geysers.
  4.  Ample water supply: If you have chosen a tankless water heater with a big GPM flow capacity, then you will practically never run out of water supply around your household. This is again something which you don’t find in the traditional water heaters.
  5. Electric models do not produce greenhouse gases: Another advantage of tankless water heaters is that the electric models do not produce any greenhouse gases which helps conserve the environment.
  6. Are remote controlled: Another fantastic feature of the tankless varieties of water heaters is that they can be remote controlled. Moreover they have 4 different settings available for use.
  7. Take lesser space: Another benefit of using tankless water heaters is that they take lesser space as compared to tank water heaters. Tank water heaters occupy a great deal of space in the bathroom or kitchen.
tankless water heaters

Image Credits: Innovativeplumbingpros.com

Cons of tankless water heaters:

  1. High Initial costs: When it comes to the initial costs, tankless water heaters are likely to hit you hard. This is so as they can be thrice as expensive as compared to traditional water heaters! Moreover you will need a specialist to install them which means added expenditure. The primary or smaller units may cost less. But they won’t be enough to meet the requirement of even a small sized family whereas larger units are expensive.
  2. Professional electrician required: Deciding to install a tankless water heater is not enough. You will need to hire an electrician to help you with the process. This is so because installing one requires you to change the electric circuit to some extent.
  3. Several add ons required: While weighing the tankless water heater pros and cons, you must also know that not all kinds of these units are suitable for all kinds of users. Buying one will depend upon the size of your home because a bigger house will need a bigger heater. Moreover for its installation you will need a dedicated stainless steel flue, a higher voltage supply line and a larger diameter gas supply line.
  4. Gas power units emit greenhouse gases: If you are going for a gas powered tankless water heater, then you must know that these emit greenhouse gases. This is a negative associated with them.
  5. Water wastage: Another negative point about tankless water heaters is that lag time requires you to run the water to get to hot water. This in turn increases water wastage.
tankless water heaters

Image Credits: arkansasgasassociation.com


It is a fact that tankless water heaters will replace all traditional heaters in the times to come. But as of now, they are way into the future in terms of practicality for most people in the world.  But again, they are more promising when it comes to saving electricity and money. They are fabulous devices but not practical for all of us. So the final decision remains yours now that you know the tankless water heaters pros and cons. If you have taken the decision to get them installed and need a plumber and electrician for the same, you can get in touch with Mr. Right services.

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    The responses on this forum caught me off guard. I’m happy to have connected with people who share my enthusiasm. Try playing retro bowl unblocked together so we can discover a new passion. We’ll see you at the game.

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