Just imagine, one chilly morning, you go to your bathroom to take a shower, and suddenly the water begins to run cold. Furthermore, cold water does not wash your dishes either, and wasting water for the hot water to make it through the pipes won’t be good for the water bill.

But fret not friend, with a tankless water heater, waiting for the hot water will become a thing of the past.

A tankless water heater is just a small Gray box hanging on the wall. It looks simple from the outside but is filled with goodness and some pretty remarkable engineering inside. So whenever you turn on the hot-water faucet, it will deliver warm water.

And did you know that you can install a tankless water heater by yourself?

Besides, it is way cheaper, energy-efficient, and cuts back on water use and utility costs every year!

So are you tired of waiting for the water in the running faucet to warm up? Want to upgrade your home and install a tankless water heater?

Then, go tankless, and save your time, money, and water by following our DIY guide. 

Here you will find:

  • how to tee off an existing gas line
  • how to replace the old water heater tank, and,
  • install the tankless water heater within a day!

So, to begin with, here uncover the facts!


Many people also look for ways to convert gas water heater to electric heater. Though it is not common, it is not impossible either to switch to an electrical one!

Some believe that electric water heaters last longer and take less space inside your house. Besides, switching from gas to electrical will need a new appliance, and that means you need to turn off the gas line for the old gas water heater. 

So let’s find out!

Source: curuso plumbing


Best way to how to tee off an existing gas line!

These days, many people tee off their existing water heaters by themselves. So in this guide, we will discuss exactly how to do that.

But first, you will need to arrange the materials to tee off the gas line! If you do not have the tools, you can borrow them from your friend or rent them from a shop.

If you are planning to do more projects like this in the future, then we suggest buying the set of tools listed below.

Here are some tools needed for teeing off an existing gas line:

  • Pipe cutter or reciprocating saw
  • A set of plumbing wrenches
  • Gas-rated Teflon tape (yellow)

Here are some things to keep handy:

  • If you have done plumbing work in the past, you might have a pipe cutter and plumbing wrenches lying around in your house.
  • Sometimes, you may even work in tighter spaces, so keeping a reciprocating saw will help you a lot.
  • Be sure to get the yellow-colored Teflon tape to use for gas fittings.


Now that you have collected all the essential materials you need to tee off an existing gas line, then let’s begin the actual work.

Below are a couple of steps we would like you to follow:

Step 1: Turn off the gas.

You can either shut off the valve you are working on or turn off the gas meter. If you are confused, which one to pick, then we suggest you have your gas company shut it off using the meter, or you can shut it yourself.

Step 2: Let it sit.

You should wait for at least 20 minutes for the gas to scatter. You might see some vapors in the line, but don’t worry, it won’t cause any kind of explosion.

Step 3: Locate the line.

In the next step, find the line to tee off from. You may find it at a gas stove or near the water heater.

You can pick the line depending on where you want to put your new line. Usually, owners tee off one of these gas lines to a new utility or a new appliance.

Step 4: Cut the pile.

Use the reciprocating saw with a metal cutting blade or pipe cutting wrench to cut the pipe. You will need to cut 360-degree motion around the pipe.

If in case, you do not have a room, a reciprocating saw will get the job done. You can just trim downwards onto the pipe.

Make two cuts and remove the piece of pipe, which will be around a half-inch. To fulfill the task faster, we recommend you use a reciprocating saw.

Step 5: Install the socket tee.

Now, it is time to get your new gas line installed with a 90-degree three socket tee. Be sure that your tee’s size, pipe’s thickness, and the existing pipe’s thickness are the same.

Then, attach the tee with the Teflon tape.

And that’s it!

You can replace the existing line and install the new appliance. Make sure, you thread the pipe on what kind of fitting you use and also check if the tee is on correctly. 

The above steps will be completed within two hours, so there is no need to take a day off from your work.


Source: way too crazy

Here is a Step by step guide to install tankless water heater:

Installing a tankless water heater is not a job to take on as your first DIY project. There are many risks if you are doing it for the first time, so let the professionals handle it.

However, if you are an experienced DIYer, you can install it safely like a professional.

We are sure that you will pat yourself on the back later after choosing and installing a tankless water heater yourself!

Before beginning the actual process of disconnecting and removing the existing water heater, let’s read certain indications if your current water heater has become too old and dying.


Heed the below warning signs and replace your old water heater with a new tankless water heater:

  • The water heater is more than a decade-year-old
  • There’s no hot water
  • You want to cut down your bills by getting a more energy-efficient water heater.
  • The tank is leaking
  • Water is not being heated effectively
  • You see excessive corrosion
  • Moisture pools around the base
  • The tank has rusted through
  • You notice rust-colored tap water
  • It is emitting weird smells
  • Hearing regular popping and clunking in the water heater
  • You want to upgrade to a tankless water heater
  • The significant mineral buildup has clogged water lines.

If you found some common warning signs, you will have to follow some necessary procedures to get started with the DIY.

If you feel confused, you can also check out the tankless water heater installation diagram for further guidance.

Also, we recommend you to prepare everything as we say to avoid any errors. And getting stuck without hot water for a week or two while you are working is the last thing you want, right?

Step 1:

Generally, tankless water heaters need larger diameter gas supply lines, a larger-diameter exhaust system, or a higher voltage power supply. So before starting your DIY project, you will have to consider these things.

Step 2:

In the next step, we suggest you use special union connector sets for the water supply. If you do so, it will employ its bypass capability. Furthermore, it will be easier for you to maintain it in the future.

Step 3:

Next, make sure to switch off the incoming water line to your home.

Step 4:

Now, disconnect the supply line from your old water heater. Even though you have turned off your incoming water line from your main, there will still be some water left in the pipe.

So you will have to get a small bucket to put underneath the water bib to catch any spills.

Step 5:

In the fifth step, make sure to disconnect the heat source from your old water heater by following the procedure below:

  • If you have a gas water heater, make sure to check the supply valve is closed.
  • If you are using an electric water heater, all you have to do is unplug the appliance from the wall outlet.

Move on to the next step after disconnecting the old water heater.

Step 6:

Once you have completed the previous step, you have to remove the old water heater from its current parking space.

Then, ensure to dispose of it as per the disposal law in the locality you reside in.

Step 7:

Now, it is time to bring your new tankless water heater. So make sure to remove it from the carton carefully.

Next, do not forget to keep the instructional material and hardware close at hand. Trust us, by doing so, it will save a lot of your time.

Step 8:

Now, you will have to decide the location for the new tankless water heater by yourself. Make sure to pick the spot which is best suited for this appliance. 

Moreover, be sure that you have allowed for the proper clearances around the water heater to comply with all local and state building codes.

Step 9:

This one is a crucial step so read it very carefully!

You have to mount the new tankless water heater on the wall as per the instructions given by the manufacturers. Also, check that you have appropriately supported its weight.

Step 10:

Now, you are all set to join all the remaining connections of the new tankless water heater.

Step 11:

Those who are using gas water heaters will have to install ventilation ducting. Generally, a tankless water heater needs a special stainless steel flue or a larger flue.

Step 12:

In this step, you shall begin with the waterline (supply line).

Step 13:

In the next step, you will have to work on the heat source. If you are using an electric water heater, plug it straight into the wall.

If you are using a gas water heater, then you will have to join a gas supply line from the stub to the new tankless water heater at the wall.

Next, open the valve and make sure the handle is in the same direction as the line.

Step 14:

Now, light the pilot on the gas water heater by following the directions mentioned in the manufacturer’s model.

Step 15:

Your new tankless water heater setup is done. Now, go ahead and enjoy an endless stream of hot water during the chilly days.

So that is how you build your own tankless water heater. We know that the setup process is very long, but all your hard work will be worth it!



Are you wondering, “How much does it cost to have a tankless water heater installed?

Then check out the chart below to find out the cost of the tankless water heater installation below:

National average cost$2,811
Average range$2,500 – $4,500
Minimum cost$1,058
Maximum cost$6,698

As you saw above, the average price range of tankless water installation begins from $2,500-$4,500. Moreover, the gas-powered unit starts from $1,600 without installation.

Many people love to install the tankless water heater by themselves, which saves a lot of bucks charged by the professionals for labor.

But sometimes, removing the old water heaters can get very complicated because they can weigh around 150 pounds. And if you don’t handle it properly, they can release scalding-hot water as well!

If you are not that good at doing DIYs like these, then water heater removal and installation can be really life-threatening for you because it needs you to work with electricity, propane, or natural gas.

So do you need an electrician to install a tankless water heater?

Then, don’t worry!

You can find any trained and experienced professional nearby to install a tankless water heater. They will take care of all your needs and demands and do their work effortlessly without any error.

You can also check out the reviews, get quotes from the experts and see, who is offering good work at a great price range. Doing so will save your few bucks.


Alright, pals, the time has come to take our leave! But before we say goodbye, we would like to clear out a few things. When you begin DIY work, you need to keep in mind all the materials and tools you need. Also, refrain yourselves from doing anything that can be dangerous to you! If you find any issues, calling a professional might be the right choice. But if you still want to install tankless water heater, then make sure to read our guide at least twice or thrice.

So let’s go tankless, fellas!

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