Find Discounts on Your Favorite water Products and Save Up To 20%!

Let's Go!

How Long Does It Take To Replace Water Heater? (Different Types and Sizes)

We may earn a commission if you click on a link, but at no extra cost to you. Read our disclosure policy for information.

Tim Rhodes

‘Water heaters are an essential part of any home, providing hot water for showering, cooking, and cleaning. But when they break down, it can be a major inconvenience. Replacing a water heater can be a daunting task, but with careful planning and the right tools, it doesn’t have to be.


How Long Does It Take To Replace Water Heater?

It takes around two hours to replace a water heater. Of course, this time may vary depending on the circumstances. For example, if you need to move the location of your water heater, it will take longer than if you’re simply replacing an old unit with a new one.

Additionally, if you’re working with a professional plumber, they may be able to complete the job more quickly than if you’re doing it yourself. But in most cases, you can expect the replacement process to take around two hours from start to finish.

Is replacing a water heater difficult?

Replacing your water heater can seem like a daunting task, but it doesn’t have to be. With a little planning and the right tools, you can have your new water heater up and running in no time.

The first step is to determine the type of water heater you need. Depending on your home’s size and needs, you may want a traditional storage-tank water heater or a more efficient tankless model.

When you’ve decided on the right model, it’s time to select a location for installation. If you’re replacing an existing water heater, you’ll want to install the new one in the same spot. This will make installation simpler and help to minimize any plumbing changes that may be necessary.

Finally, it’s time to connect your new water heater to your home’s water supply and gas lines. Once everything is properly connected, you’ll be able to test your new water heater and enjoy its benefits for years to come.

How to replace a water heater?

This guide will walk you through the process of replacing a water heater step-by-step, so you can rest assured that it will be installed correctly and safely:

  1. First, shut off the power to your water heater.
  2. Next, drain the tank by attaching a hose to the drain valve and running the other end of the hose to a nearby drain or outdoors.
  3. When the tank is empty, disconnect the cold water inlet and hot water outlet pipes from the old water heater.
  4. Disconnect the gas line or electrical wires, depending on what type of water heater you have.
  5. Now you’re ready to install the new water heater. Start by connecting the cold water inlet and hot water outlet pipes to the corresponding fittings on the new tank.
  6. Then, reconnect the gas line or electrical wires.
  7. Finally, fill up the tank with fresh water and turn on the power supply.

Congratulations! You successfully replaced your water heater, and should now have plenty of hot water for all your needs.

Installation tips for different types of water heaters

There are three main types of water heaters: electric, gas, and tankless. Each type has its own set of installation requirements. Here are some tips to help you get started.

Most electric water heaters can be plugged into a standard 120-volt outlet. However, larger units may require a dedicated 240-volt circuit. Be sure to consult the manufacturer’s instructions before beginning the installation.

Gas water heaters require a gas line for connection to your home’s natural gas supply. Be sure to have a qualified technician handle this portion of the installation. Once the gas line is connected, the rest of the installation is similar to that of an electric water heater.

Tankless water heaters are the most complex to install, as they require both gas and electrical connections. Again, it is best to have a professional handle the gas line connection. After that is complete, you will need to run an electrical circuit to the unit. Check the manufacturer’s instructions for specific requirements. With both gas and electricity running to the unit, tankless water heaters can provide an endless supply of hot water.

How to properly size a new water heater

The first thing you’ll need to do is figure out the peak demand for your home. This is the amount of hot water you’ll need at any given time. To do this, add up the flow rate (in gallons per minute) of all the appliances that use hot water.

You’ll also need to consider the climate. In colder climates, you’ll need a larger tank to heat the water. In warmer climates, a smaller tank will do the job.

Another important factor is recovery time. This is how long it takes for the water heater to heat up again after it’s been used. If you have a large family or use a lot of hot water, you’ll want a water heater with a fast recovery time.

Finally, you’ll need to decide on the type of fuel you want to use. Gas models are more expensive upfront but tend to be more efficient in the long run. Electric models are less expensive but can be more expensive to operate.

How long do water heaters last?

The answer depends on a number of factors, including the type of heater, the quality of the unit, and how well it is maintained. Tank-style water heaters tend to have the longest lifespan, with some units lasting upward of 20 years. Conversely, tankless water heaters have a shorter lifespan, with most units needing to be replaced after 10-15 years. Of course, these are just general guidelines – with proper care and maintenance, your water heater may last even longer.

Why do water heaters break down?

Over time, the water heater in your home will start to break down. This is because the water heater is constantly being used, and all of the components are exposed to extreme temperatures.

The most common reason for a water heater to break down is because of a build-up of sediment. Sediment can accumulate in the bottom of the tank, and over time, this can lead to corrosion and leaks. Sediment can also cause the burner to overheat, leading to a loss of efficiency and premature failure.

In addition, hard water can also cause problems for water heaters. Hard water contains minerals that can deposit on the heating element, insulating it and causing it to overheat. Eventually, this can lead to a complete breakdown of the heating element.

To prevent these problems, it is important to have your water heater regularly serviced by a qualified technician.

Signs Your Water Heater is on its last legs

Here are four signs that your water heater may be nearing the end of its lifespan:

  1. You notice rust on the tank. This is a sign that the tank has begun to corrode and will eventually leak.
  2. The water from your shower is lukewarm. This could be due to a build-up of sediment in the tank, which reduces the efficiency of the heater.
  3. There’s a puddle of water around the base of the heater. This could be due to a leak in the tank or in one of the connections.
  4. The heater makes strange noises. These could be due to sediment buildup or corrosion, and they indicate that the heater is working less efficiently.

If you notice any of these signs, it’s time to start shopping for a new water heater. By replacing your old one before it breaks down completely, you can avoid an inconvenient and costly interruption in your service.

Estimating the time needed to replace a water heater

There are a few things you’ll need to know in order to estimate how long it will take to replace your water heater.

First, you’ll need to know the size of your current water heater. This information can be found on the manufacturer’s label, or you can measure the height and width of the unit.

Next, you’ll need to know the type of water heater you have. This information is also usually found on the manufacturer’s label.

Finally, you’ll need to know the capacity of your current water heater. This information can be found on the manufacturer’s label or in your owner’s manual.

Once you have this information, you can use it to estimate the time it will take to replace your water heater.

For example, let’s say you have a 50-gallon water heater that is 6 feet tall and 3 feet wide. Let’s also say that you have a gas-fired water heater. Based on this information, we can estimate that it will take approximately 4 hours to replace your water heater.

Final thoughts

Replacing a water heater is a big job, but it’s one that you can do yourself if you’re handy and have the time. Just be sure to do your research ahead of time so you know what to expect, and be sure to follow all the instructions carefully. With a little bit of effort, you can have a new water heater in no time.

In a Hurry?

Take a look at the most popular and trending water products.