How to Install a Gas Tankless Water Heater?

Before getting a tankless water heater for home, a buyer should also know about how to install a gas tankless water heater to avoid facing any problem and safely install a gas tankless water heater. A perfect guide can make you able to install a gas tankless water heater on your own. Many videos and guide lectures are available on the internet to take help but we will explain each step that will be easy to understand for everyone.

In this article, the reader will have a step by step easy guide to install tankless water heaters. By following this guide anyone can install a water heater easily and also get your answer about how to install a gas water heater?

How to Install a Gas Tankless Water Heater

A tankless water heater saves money because it does not have any heavy system, but this heater provides water according to the requirement. There is no need to wait so long for water to be hot. Tankless water heaters are also best for another reason and that is the energy saving method of these heaters, these heaters save up to 40% on energy expenses when compared with storage-tank options.

Equipment’s Needed During Installation

Some equipment is really important for the installation of a gas tankless water heater. Here is a list of required installation equipment that will be helpful for the person who is wondering about how to install a gas tankless water heater.

Equipment’s Needed During Installation

With the help of all these things, the installation of a gas water heater would really be easy and a buyer can install a heater on his own.


The best and easy way to understand the answer to this question of how to install a gas tankless water heater? Is given below. Have a look at it and get some information.

Unit Selection

The best thing about a tankless water heater is that it saves space. You can install it on a wall.  The initial step is to set the heater into the divider, between studs. presently, check the temperature rise and the ideal heated water temperature short of the approaching groundwater temperature.

presently, cut an opening between the studs and connect the unit to the wall as per the guidance control.

Unit Selection

For additional means, attempt to comprehend the peak flow of hot water. As we as a whole know the distinction between tank water warmers and tankless water heaters. Water heaters with tanks are weighty and tedious for your necessary requirement for water. In any case, with tankless water heaters, you don’t have to hang tight for it.

Now, check the flow rate according to your need for hot water. Count the number of uses of water at your home like washing clothes, dishwashers, and other needs of water. Also, try to figure out all possible uses of hot water at home. The tankless water heater must have the option to convey this greatest flow at the ideal temperature rise.

Gas Supply

The second thing to do for the installation of a gas tankless water heater is to connect the heater with the gas supply. Thus, great gas pressure is truly significant in light of the fact that it is the need of tankless water heaters that the capacity of gas should be accurate.

In the event that gas pressure is as indicated by the prerequisites, and the run length is sufficiently short, it is conceivable to utilize a ½-inch line, which is utilized by most existing stockpiling tank-type water heaters.

Gas Supply

Ensure all water valves are off, Remove the inline filter, and turn on the gas. At last, test the unit to ensure it is working appropriately.

Install Copper Pipes

The next step must be about the installation of copper pipes. The copper water lines must have an accurate gap from the wall. Using “Bell Hanger Brackets† these brackets and pipes will reduce the corrosion between the water heater and gas lines.

Install Copper Pipes

Unscrew the gas nipples on the gas lines, insert the gas nipple into the gas control valve and make it thigh with a wrench.

Sniffing Gas

During establishment, gas may seep from the lines. You should ensure there are no gas spills. Utilize a gas sniffer to guarantee if there are no gas spills. The gas sniffer must be utilized to check all the joints.

Light and Pilot

Turn the gas supply on.

Light and Pilot

Here, you can turn the dial to “pilot lighting†press and hold down the control knob. After that press the ignitor button.


If you can see the flame below the heater, press it, again and again, to control the knob for almost 60 seconds. If it’s still in pilot mode and lit, just turn the control knob to the ON position.

Testing of Gas Lines

Here you need to be careful about the gas leakage. You should check if there is no problem with gas. If you feel some smell or bulbing by spraying all connections, there can be something dangerous. Tight the loose connection again to fix the gas problem. Now, you can turn the gas connection on and enjoy hot water as you per your requirements.

Testing of Gas Lines

And here you also got your point of how to install a gas tankless water heater.

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