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One Shot Water Heaters


Introduction to Water Heaters

Water heater installation is a complicated and challenging task. It’s a complicated task no matter what form of heater you use. There are a number of things to consider before beginning water heater installation. You should know that if your water heater is gas or electric powered they will have different instructions for installation and operation.

Please note: The information on this page is shared for the educational value to inform and educate our visitors on the basics of water heater installations. We strongly encourage the reader to use a professional service to install or replace their hot water heaters. One Shot Water Heaters is not liable or responsible for any decision made by the reader after reading this guide. Please use a professional!


  1. Reasons for needing a water heater
  2. Electric water heaters
  3. Gas water heaters
  4. Can you install a water heater by yourself?
  5. Water heater installation costs
  6. Types of water heaters
  7. Why it’s important to hire a pro

Reasons for Needing a Water Heater Installation or Replacement

Of all appliances in homes, water heaters are often the most neglected. Many people overlook faults in their water heaters since they don’t know what to look out for. Here are some pointers that you may need to replace your water heater. The situation will be a bit different if you need a water heater installation because your current water heater is having issues versus if you have no water heater at all, and need one freshly installed. If you have a hot water heater that’s having issues, double-check that you need to replace it. The mantra “When in doubt, change it out” stands true here, but there’s no harm in making sure.

Signs that you might need a new hot water heater:

  1. You hear strange noises coming from your water heater (i.e. whistling or popping noises)
  2. There’s rusty water coming from the water heater
  3. Low hot water pressure
  4. Water is lukewarm or cold
  5. The water heater is leaking
  6. The pilot light won’t stay lit (for gas heaters only)

Electric Water Heaters Installation

If you use an electric heater, the installation process starts with choosing a location. An electric heater will need access to power so it has to be near an outlet or another place where electricity is available. The location where water heater installation takes place is usually the closet. The only limit on the distance it can be from any source of power is the length of electrical wires allowed. It’s best if you talk to an electrician before beginning the process to get advice on how far away from a power source you are allowed to install your water heater. The electrical setup component to installing an electric water heater is one of the reasons why non-professional should avoid attempting this on their own.

After deciding on a location, your next task will be hooking up the necessary wiring. There are two choices for wiring – direct wire or plug-in. If you choose to go the plug-in route, the installation process consists of running a cord from an outlet to your water heater. For direct wiring, this means cutting into drywall or other types of wall material and drilling holes for wires. Again, if you do not have experience with this type of work, it’s best left to a professional.

Once you have the wire in place, hooking up your heater is the next step to water heater installation. Start with connecting your power wires to an appropriate breaker or fuse for safety purposes. You can either cut into an existing circuit and splice them together or install a separate circuit altogether if one isn’t already present. Once you have your power connected, it’s time to hook up the water lines. Many electric heaters can be hooked up directly to a hot and cold line at a local source of water, but some will need a more involved installation process.

Remember, if you’re not 100% sure you can do this safely, please defer to using a professional. A professional has years of experience to know how to do it without getting (or killed), the tools, and will do it all for you in a very short amount of time. One Shot Water Heater’s prices are so competitive that we believe the small price to pay for the installation is nothing considering the convenience, the security, and the safety of a professional installation.

Gas Water Heater Installation

If you use a gas-powered heater, the first step is location selection. A gas water heater installation will take the same general approach as an electric one, except it can be installed outdoors if desired. Make sure that you have access to water and either natural or propane gas before getting started. The location for your heater needs to be near a source of fuel and where the flue is able to exit the building in case the pilot light goes out. Again, you should check with your installer to determine what is allowable in your area.

When it comes time to hook up the heater itself, remember that opening a gas line is an extreme safety hazard and you must take all precautions before doing so. Do not attempt this unless you know what you’re doing or have experience in this area. We cannot emphasize enough how dangerous this is!

The other part of gas water heater installation involves hooking up the flue. The process consists of cutting a hole in your roof or wall to run the pipe through so that it exits above the structure. This system is designed to remove carbon monoxide from your home, so this should be done correctly for your own safety. Carbon monoxide is a silent killer. Without assuming that this has been set up correctly, you could very easily flood your house with carbon monoxide. We strongly urge you to use a professional for this type of installation.

Wait time is another factor in water heater installation. For electric heaters, you will need to set the thermostat and wait an hour before using the heater for the first time. Electric heaters need to preheat and cannot immediately provide hot water when you turn them on. This is because heating the entire system at once could cause dangerous electric shorts or other malfunctions. To prevent this, preheating is necessary for the proper operation of the heater.

Gas heaters will not require an initial wait time like an electric one. Once the gas supply is hooked up, you can turn it on and go.

Can You Install a Water Heater Yourself?

No, we do not recommend this. So many things can go wrong, especially with gas heater installation. Once you start working on the flue and cutting into the roof or wall to run the pipe, there could be issues that arise that will not allow you to complete your work without calling a professional as soon as possible. There is also a risk of carbon monoxide poisoning which is fatal. Even with electric water heater installation, it is recommended that you call a professional. You could electrocute or burn yourself. You could also damage the heater or start a fire.

We can’t tell you how many times we’ve seen the aftermath of self-water heater installations where things were done wrong. We see these come through our shop all too often and without fail, they are always disasters. If you have an older heater that is on its last legs, then it may be a good idea to replace it yourself or at least begin the installation process. However, if your water heater needs to be replaced because it doesn’t work properly, then we strongly suggest calling in a professional who has experience with this particular type of equipment. It can save you a huge headache and will prevent potential damage to your home from occurring.

Case in point, the temperature and pressure relief (TPR) Valve. It must be draining properly for this heater to work properly and not burst. If your hot water heater is installed incorrectly, up to 75,000+ pounds of pressure can build up and cause your water heater to literally explode. The TPR valve’s job is to vent pressure to keep the tank within a safe range, typically if the pressure goes over 150 PSI or the temperature of the water exceeds 210 degrees Fahrenheit. Not only can improper installation of the TPR valve cause an explosion that could severely wound someone, but it could also cause devastating and catastrophic damage to your home, damage that is unlikely to be covered by your insurance company if the water heater wasn’t installed by a professional and up to full local codes. When you consider all these factors, it’s hard to think of a good reason why the installation cost isn’t worth the guarantee that everything will go smoothly and be done correctly. After all, it is a fairly inexpensive service call vs the potential of serious injury to you or your family or serious damage to your house from an explosion.

How much does a Water Heater Installation Cost?

Replacing a water heater typically costs between $750 and $1,000. This price fluctuates depending on the type of heater you have. Electric heaters are usually more expensive than gas ones, but there are other factors involved when estimating how much your new installation will cost. Several factors include the type of water heater, whether it’s gas or electric for example, and the size of the water heater.

Your new heater will need to be hooked up to your hot water lines, which is included in the installation cost quoted. A plumber will shut off the old heater and turn on the new one to make sure it’s working properly.

All One Shot Water Heaters installations come with:

  1. Brand new water heater of your selection
  2. New Shut-off Valve
  3. New Expansion Tank
  4. 18” of copper piping above inlet/outlet

In Conclusion

In conclusion, it is always a good idea to call a professional when installing a water heater. Not only does this prevent injury and damage to your home, but it can save you hundreds of dollars as well as being done correctly, up to code. A new gas or electric heater costs at least $750 – $1,000 depending on the type and size you need. Your plumber will hook up your new water heater and turn on the old one to make sure it’s working properly before they leave.

Types of Water Heaters

When it comes to installing a new water heater, choosing the one that suits your needs best may be challenging. With so many models to choose from, making the right decision may require you to consult with a professional plumber. The team at One Shot Water Heaters is highly knowledgeable on the many water heater options available and can offer you valuable advice.

Let’s look at a few common types of water heaters.

Gas Water Heaters

Gas water heaters have high upfront costs than electric heaters. However, if you are looking to incur less on monthly utility bills, a gas water heater will work for you. Natural gas is relatively cheap; thus, running a gas water heater is less expensive than an electric one.

When it comes to maintenance, a gas water heater requires more attention. Besides the usual flushing of the system, gas lines and gas tanks need a regular maintenance routine. Constantly caring for your gas water heater prevents gas leaks and sediment build-up.

Electric Water Heaters

Are you looking for functionality? An electric water heater will offer you that. They are easy to operate compared to gas water heaters. You don’t need to keep turning on the gas to start the heater.

Their upfront cost is lower compared to that of gas water heaters. However, running an electric water heater is expensive due to the higher costs of electricity.

Tankless Hot Water Systems

As their name suggests, these heaters don’t come with a tank for storing hot water. They instantly heat water when it is needed. Coldwater runs through overly heated coils that heat the water pretty fast.

Tankless hot water systems save you space; you don’t need to worry about storing large tanks in your home. These water heaters have a very high upfront cost compared to gas and electric water heaters.

One-Shot Water Heaters is currently not offering tankless water heater installation or replacements.

The Importance of Hiring a Professional to Install Your Water Heater

Your water heater may not be one of the items you quickly repair without professional support. A water heater is a complicated and potentially risky system. Its replacement is better off handled by a professional.

Here are some of the benefits of letting a professional handle your water heater replacement job.

1. Save Your Time

Water heater companies have licensed plumbers who are highly knowledgeable about their job. Their cumulative years of experience make it possible for them to spend the least time on a project and still get the job done right.

2. Don’t Take a Big Risk

Did you know that your water heater operates off a 240- volt power which can produce a fatal shock? Now you know.

Instead of risking personal injuries trying to replace a water heater on your own, hand the job over to a water heater company.

3. Know it was Done Correctly

Hiring a professional to handle your hot water installation job not only saves you additional costs but also gives you peace of mind. Trying to fix a water heater on your own, or worse yet, hiring unqualified personnel may end up adding on to the existing damage rather than solving it.

Hiring a professional who’s conversant with your local safety codes and one who can follow the manufacturer’s guidelines is an excellent way of protecting your water heater’s warranty.

4. Do More Important Things Instead

Hiring a professional plumber is now easier than ever. With most companies owning websites, booking a schedule or making payments is something you can do at the comfort of your home.

How Much Does a Water Heater Installation and Replacement Cost?

The amount you incur on hot water installation or replacement depends on factors such as:

Type of Water Heater

The type of water heater you choose determines how much money you spend on the project. For instance, if you choose an electric water heater over a gas water heater, you will incur a less upfront cost.

The water tank size matters too; a larger tank will cost you more than a smaller one.

Location of Your Water Heater

The accessibility of your water heater determines how much labor cost you incur. The more accessible your water heater is, the lesser the costs. Tight and inaccessible spaces will significantly increase the labor charges.

Additional Costs

In some cases, your water heater might need an insulator. The cost of the insulator depends on its size and model. Purchasing one will add to your installation cost.

Conclusively the amount you spend on hot water installation or replacement depends on the amount and nature of the job. If you need an accurate idea of how much money you will need for your installation project, consider getting a custom price estimate from our website.

If you are looking for a reliable water heater company to take care of your installation job, contact One Shot Water Heaters. We have a highly knowledgeable team that is licensed to work on all types of water heaters. Our pricing guides are straightforward, with no hidden costs. Don’t like waiting around? You can count on our punctual plumbers to get your job done within your desired timeframe.  

You can see our pricing below.


All Water Heater Packages Come With:

Electric Water Heaters


40 Gallon


50 Gallon

Gas Water


40 Gallon


50 Gallon

Additional Fees: