Tankless Water Heater FAQs

Tankless water heaters, also known as “instantaneous” or “on-demand” water heaters, are the right choice if you want to save some electricity and use the heater system infrequently. These kind of heaters don’t store the water, so the hot water is provided on demand only when it’s needed.

Below are some frequently asked questions regarding tankless water heaters that you would like to read.

Tankless Water Heater Frequently Asked Questions

1. How Does A Gas Tankless Water Heater Compared With An Electric Tankless Water Heater?

The best takagi electric tankless water heaters usually can’t quickly deliver hot water in case the groundwater is really cold. Even in the areas with slightly warm groundwater, the majority of homeowners would require to upgrade their current electrical service in order to supply the required power to the electric tankless water heater that serves the whole house.

takagi tankless water heater parts

2. What Is The Appropriate Size?

The right size of a tankless water heater generally depends on the kind of plumbing fixtures and the appliances that are present in the home. Another factor is the temperature groundwater in the area. And finally, the number of people in the household and that requirement of hot water also matters a lot.

3. How To Control The Water Temperature?

Every standard tankless water heater has got a temperature controller that can be used to adjust the temperature (98° F – 140° F, i.e. within the safe range). The controller even displays the diagnostic codes as well as maintenance codes that help in monitoring the system’s performance.

cost of tankless water heater

4. Can The Existing Venting Be Used?

Certainly not. You will have to use the approved venting as specified by tankless water heater’s manufacturer. Several manufacturers provide concentrate venting, that needs only one wall penetration for intake as well as exhaust, and even has no issues with combustibles.

5. What Is The Amount Of Maintenance Required?

There are two kinds of easy, regular maintenance efforts required that might be performed by your service technician or you, in order to keep the tankless water heater operating perfectly: flushing it to save it from lime and scale, and checking out the in-line screen-filter for any kind of debris.

6. Is It Possible To Get The Installation Done By Myself?

The installation must be performed by some licensed contractor, who has been trained to handle electrical, plumbing, gas and venting aspects associated with the installation of a tankless water heater. Such a professional is aware of all the local codes and national codes, and has experience carrying out such a task.

Having any non-licensed professional carry out this task would not only affect the product’s warranty, but might also cause performance issues in the long-term as a result of the proper installation.

7. What’s The Cost Of A Tankless Water Heater?

Typically the tankless water heaters cost around 2 to 2.5 times as compared to any common tank-style water heater. Needless to say, the energy savings as well as the ease of usage make it a far better option for the long-term.


Considering that the water heaters usually represent as much as 14% of the energy consumption of an average household, selecting the appropriate and highly efficient model is a really important decision. Not just that, your water heater purchase might even qualify for a local utility/municipality rebate. Understanding your requirements and deciding upon the right choice of water heater might save you from a lot of worries and help you save a good amount of money in the long run.

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