Install a tankless water heater is definitely not an easy task. Still, if you follow our guide on how to install a tankless water heater, you will be able to do it yourself. Now, plumbing companies will try to scare you away in an attempt to overcharge you for a job that is reasonably simple to do.
How To Install A Tankless Water Heater Yourself
There are many advantages and disadvantages of installing a tankless water heater yourself:
- Did you know that water heating accounts for about 30 to 40 percent of an average family’s energy bill? Installing a tankless water heater reduces that cost by up to 50 percent. Therefore, tankless water heaters will pay for themselves in less than a year!
- Tankless water heaters are new, up to date technology. Conventional water heaters have a life span of 6 to 10 years and they’re very likely to fail, flooding your home in the process. On the other hand, tankless water heaters have a lifespan of about 20 years, and even more! Once you install a tankless water heater, you don’t ever have to worry about flooding your house.
- Tankless water heaters are wall-mounted, unlike conventional water storage heaters and they take up much less space.
- The only disadvantage to a tankless water heater would be the install cost. Since we are going to teach you how to install a tankless water heater yourself, there are little to no disadvantages!
Preparing to install a tankless water heater
Before installing a tankless water heater, you must check if your gas meter needs an upgrade. A lot of energy is distributed around your house and your current meter might not have enough capacity to supply your home alongside a tankless water heater.
You will need a pipe that connects the meter to the tankless water heater.
A tankless water heater produces condensation, therefore you will need to take care of the venting. A stainless-steel exhaust pipe will probably be required. Depending on which tankless water heater you’re going to install, a plastic exhaust pipe might do the job.
Last but not least, make sure to prepare the space where you plan to mount a tankless water heater. A gas unit requires 120 volts of electrical power, therefore, plan to install it next to an outlet.
How to remove the old water heater
The first thing you will need to do is shut off the two valves that lead into your old water heater. To loosen the lines that go from the water heater, you can use a simple pipe wrench. Once you loosen the valves on your old water heater, drain the tank by opening the drain valve on the bottom.
- If your old water heater is a gas unit, shut off the gas valve and disconnect the line from the tank.
- If you have an electric water heater, you must shut off the power before disconnecting the wires from the tank before removing the water heater and installing a new tankless water heater.
How to install a tankless water heater
Following the manufacturer’s instructions, you can either mount the tankless water heater against drywall or set it into the wall.
Once you have mounted or installed the tankless water heater, connect the supply pipes. The water utility pipe should lead to the inlet while the pipe leading to the house should be connected to the outlet. Make sure to install shutoff valves on both lines.
Now that we have installed the tankless water heater, it’s time to clean it and test it out. Run water through the water heater for a few minutes by opening the water vales only; do not open the electricity or gas valves just yet.
After a few minutes, shut off the water and remove the inline filter. Once the inline filter on the tankless water heater has been removed, clean out the dirt and debris and you’re almost ready to test the tankless water heater out!
The only thing that’s left to do is replace the filter, turn on gas and electricity, and open the water valves.
The unit should be running correctly and you have just installed a tankless water heater all by yourself!