Making a non pressurized water heater

In summary, the conversation discusses the process of creating a water heater from a insulated 50 gallon bucket. The initial plan was to use an immersion heater, but it was not suitable for the project. The suggested alternative is to use a normal water heater element setup, but the user is not familiar with them. Safety precautions are emphasized, as electricity and water can be dangerous when mixed. The user is advised to consult with an electrician and follow local building codes for a safe and legal installation. The conversation also touches on the potential need for a separate circuit and breaker panel capacity. The user is also encouraged to seek professional help and obtain necessary permits and inspections. The conversation concludes with a question about using an extension cord or an existing outlet for powering
  • #1
GiTS
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I want to make a water heater from an insulated 50 gallon bucket, but I could easily use a different size container. I tried doing things the easy way by just looking for an immersion heater than can be plugged straight into an outlet, but all I can find are travel heaters for making coffee.

So I've decided to use a normal water heater element setup. But I don't really know anything about them. What do I need to put the element in the bucket to heat water?
 
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  • #2
Well from the looks of it, a typical 50 gallon uses 4500 Watts. That corresponds to almost 40 amps if you use a typical outlet. I'm not up on the electrical code for houses, but I'm quite sure most circuits in a home will not be able to handle 40 amps of current. This might not be such a good idea. You most likely will have to use 210 VAC to get the amps down.
 
  • #3
A typical electric water heater has a bottom and top element and they are never on at the same time. When hot water is drawn out the top of the tank, cold water flows in the bottom. When the thermostat on the bottom element cools enough the bottom element is turned on. If the water is only run momentarily, such as a hand washing, the top thermostat is not likely to cool enough to turn on the top element. BUT if enough water is run out then the top thermostat will cool enough to turn on the top element and turn OFF the bottom one. Each element is about 4500 watts. On a 240 volt circuit this is almost 19 amps. So, you could try a 4500 watt element made for 240 volts and simply run it on 120 volts. It will be slower, but it beats not having hot water. Or, you could simply search for an element that can run at 120 volts that won't overload the typical 120 volt circuit. 15 amp is common, 20 amp in some places.
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I don't believe I should have to stress safety here, but I will. You are mixing electricity with water. Be careful. The 'bucket' you are putting the element in; do you plan on putting it in from the side like a normal water heater would? Does this bucket have an open top? You should consider that an element would normally have ALL of the rod imersed in water so don't take the shortcut and float it in from the top or something. Make sure that no water can splash onto your connections, etc. I would make sure this is GFCI protected.
 
  • #4
sounds good, how do I hook the element into the wall? What do I need for that?
 
  • #5
GiTS said:
sounds good, how do I hook the element into the wall? What do I need for that?

An electrician.

You will need to follow National Electric Code (NEC) rules, as well as your local building codes. You will probably need a building permit as well, depending on how this new appliance connects into your existing breaker panel circuits, and a final inspection and sign-off by the city inspectors.

The reasons for these rules have to do with safety and liability. Not just your safety, but the safety of others who live in your home, as well as the safety of adjacent homes. If you catch your house on fire, depending on your FD's response time, you can burn down your neighbors' homes as well.
 
  • #6
So they don't sell anything that will plug into the wall and the element? Or some sort of device that plugs into the element?

Are there any electricians on this site? Are you an electrician?
 
  • #7
GiTS said:
So they don't sell anything that will plug into the wall and the element? Or some sort of device that plugs into the element?

Are there any electricians on this site? Are you an electrician?

I'm not an electrician. But I've done home improvement projects (electrical and otherwise) that conform to code and were done with the proper permits and inspections.

As to a plug-in device, there may be such a setup, but it would depend on local codes whether you could use it. And, you would have to just happen to have an outlet available right where you want the water heater, and with enough current available on that branch.

Your local code would likely require a separate branch for a high-current appliance installation like yours, which would involve pulling a new circuit from the breaker panel, and possibly having to increase your home's breaker panel capacity.

Once you have figured out the details of what you want to do, I'd suggest checking your breaker panel capacity (do you have any spare circuits that you can convert to GFCI, for example, and dedicate to this appliance?), and take all of the info down to your city's building inspector department. They are generally quite helpful when it comes to explaining local code requirements to home-improvement type folks, and they will be able to outline the kinds of things that need to be done to keep the project safe and legal. Then you could take all of that to a local electrician and ask for a quote for the project.

What is the reason you are wanting to do this as a do-it-yourself project? Is it mainly cost, or do you have some other reason? Do you already have one water heater, and you are wanting to add another? Is the first water heater powered by gas or electricity?
 
  • #8
How does a water heater element plug into the wall? Do I just get an extension cord and cut of the female and hook up the wires directly?

I don't anything about my place's electricals. What If I just unplug the oven and use that outlet? Or the washer or dryer?

Pasteurizing bottles of homemade juice/wine/beer/etc. 160f for an hour. Right now i just use the stove but that takes too long.
 
  • #9
Hmmmm. So you want to heat up 50 gallons of water to do this and you are complaining about the stove taking too long? Just curious, how many bottles at a time? How long does it take now?
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No offense, but I don't think this is something you should be tackling. You don't seem to have the grasp of electricity needed to do this. I have a ton of experience working with line voltage so I tend to be a bit complacent about safety when advising others. It's easy for me to assume others know about the same dangers that I do when in reality they do not.
 
  • #10
GiTS said:
How does a water heater element plug into the wall? Do I just get an extension cord and cut of the female and hook up the wires directly?

I don't anything about my place's electricals. What If I just unplug the oven and use that outlet? Or the washer or dryer?

Pasteurizing bottles of homemade juice/wine/beer/etc. 160f for an hour. Right now i just use the stove but that takes too long.

No, you don't just use an extension cord and cut off the female end. Sorry, GiTS, my post #7 above is the best advice for you. I hope for your sake and the sake of your neighbors that you seek some local professional help in doing this.

This thread is now locked, per the PF Rules and policy about discussing dangerous activities.
 

FAQ: Making a non pressurized water heater

What is a non pressurized water heater?

A non pressurized water heater is a type of water heater that does not rely on a pressurized system to heat and distribute hot water. Instead, it uses natural convection to circulate water through the system.

How does a non pressurized water heater work?

A non pressurized water heater works by using a heat source, such as a gas burner or electric element, to heat water in a storage tank. As the water heats up, it rises to the top of the tank and is then circulated through the system by natural convection. This process continues until the desired temperature is reached.

What are the benefits of a non pressurized water heater?

One of the main benefits of a non pressurized water heater is its energy efficiency. Because it does not rely on a pump or other mechanical components, it uses less energy to operate. It also has a longer lifespan compared to pressurized water heaters.

Are there any drawbacks to using a non pressurized water heater?

One potential drawback of a non pressurized water heater is that it may not provide as much water pressure as a pressurized system. This can be a concern for households with multiple bathrooms or high water usage. Additionally, non pressurized water heaters may take longer to heat up water compared to pressurized systems.

Is it difficult to install a non pressurized water heater?

The difficulty of installing a non pressurized water heater depends on the specific model and your level of plumbing experience. However, in general, it is recommended to hire a professional plumber to ensure proper installation and to avoid any potential safety hazards.

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