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Electric tankless water heaters require a large amount of electrical power (when running). Surprisingly so, they are very energy efficient and economic. We will look into exactly how much electricity does a tankless water heater use (by using the power equation P = I * V and cost equation Cost = kWh * t (h)).

   Heating water is one of the most power-hungry processes. Tankless heaters heat up the water in seconds (5 seconds from cold to hot water). To achieve that, we need an incredible amount of electricity.

Does that mean that tankless heaters require a lot of electricity?

   Yes and no. When they are ‘on’, electrical tankless heaters require up to 27,000W of electricity. For comparison, an average washing machine will require a bit more than 1,000W to run (and it will run for 1-2h). However, electric tankless water heaters are not running all the time. All this energy is used to heat up water only when we use hot water.

   In fact, even according to the US Department Of Energy, tankless water heaters can significantly reduce monthly electricity bills:

“For homes that use 41 gallons or less of hot water daily, demand water heaters can be 24%–34% more energy efficient than conventional storage tank water heaters.” (DOE on energy efficiency of tankless water heaters)

   Most households use less than 41 gallons of water per day. 24% – 34% is quite a lot of energy savings. Electricity-wise, tankless water heaters are a smart financial investment (they also last for 10-15 years).

   But how can such a power-hungry appliance reduce the electricity bill?

   It all comes down to how many amps does a tankless water heater draw (since the voltage is always the same: 220/240V). Let’s calculate a bit to see how much electricity does an on-demand tankless hot water heater use:

   Calculating the maximum running costs of tankless water heaters is quite easy. The key information here is how many watts does a tankless water heater use. We’ll do one quick example here, with more to follow.

Example: You have a 20kW electric tankless heater. How much does it cost to run it?
Solution: 20 kW heater will spend 20 kWh worth of electricity if you run it for 1 hour. The average kWh price in the US is $0,1319. That means a 20kW tankless heater will spend, on average, 20 kWh x $0,1319 per kWh = $2,64 per running hour.

   That doesn’t sound a lot, right? Obviously, there are many factors that come into play like intake water temperature, hot water demands, and so on. For a 20kW tankless water heater, the $2,64 per hour is the maximum electricity usage (running at 100% heating output). You will likely run your heater 100% output for the first 15 seconds, and then the heating output percentage (and hence water heater costs) drops.

Now, the real question is this:

   How many hours per day do you run the tankless water heater? Here is how much it costs to run a 20kW electrical tankless heater from our example for different time periods:

   * 20 kW running at 100% output for 10 minutes (shower): $0,66.
   * 20 kW running at 100% output for 30 minutes: $1,32.
   * 20 kW running at 100% output for 1 hour: $2,64.
   * 20 kW running at 100% output for 2 hours: $5,28.
   * 20 kW running at 100% output for 5 hours: $13,20.

Be aware that we always predispose:
1) Price of electricity to be $0,1319 per kilowatt-hour.
2) Power of heater is 20kW.
In this case you should replace the electricity price of your market and the power your purchased.

In the era of continuous product upgrading and iteration, almost every brand will have a new product launch every year. The new water heater has more room to upgrade than the old one in terms of technology, performance and appearance.

 

Our JNOD is so excited to share our high-tech product, which has dual heating systems: instant heating + water preheating. It adopts the relay heating mode. The system can automatically switch during working. This increasing mode makes JNOD rapid water heater different from the storage water heater on the market which work with dual-mode.

#01 Dual Heating Modes

- 30L large capacity water tank is made from high quality enamel, that is sintered at high temperature and not easy to corrosion;

- The power for instant heating is 5.5kW or 7kW. Easy installation and wide applicability.

#2 Raising Efficiency

- The highest water temperature of the inner tank can reach 85℃.

- Multi-fold capacity to supply more taps with increased hot water requirements.

- Good enough to use for bathtub washing, residential and commercial water heating.

# 3 Intelligence Appliance

- Fully automatic control: auto thermostatic, auto heating, auto refill cold water.

- Easy handling: Touch key, WiFi function with clearly LED display.

Choosing a new water heater is important. Water heaters consume a lot of household energy. The right water heater can make a big impact on energy efficiency in your home. When deciding which of the different types of hot water heaters will work best for your home, there are many things to consider.

Household Size

Tankless electric water heaters are also called instantaneous or on-demand water heaters. Rather than use a storage tank, the water circulates through a heating element that heats the water as needed. Tankless water heaters are rated by the gallons per minute they provide, and the average life span is 20 to 25 years.

Use

How you plan on using a water heater determines how much hot water it needs to supply, as well as whether you need a single unit, individual units at several points in the house or a combination of solutions.

Capacity

In a tankless water heater electric, the capacity is measured by flow rate, calculated in gallons per minute. Getting the correct size of tankless heater requires figuring out how much hot water you may need at any given time, coming up with a flow rate number and then matching that figure to the measure on a given system.

Tankless water heater tips to consider

- Overheat protection: Keeps the water from overheating in the system by cutting off the power supply once the set temperature is reached.

- Digital display: Makes it easier to monitor the temperature and make precise adjustments.

- Automatic constant temperature: A stable water temperature is a great help to protect your skin, and also get the better experience for using hot water.

- Leakage protection: Provide an important safeguard for your family life.

JNOD carry a wide selection of different types of hot water heaters, so you will be able to find the right style for your home, no matter if it is tankless water heater kitchen sink, tankless water heater electric whole house or tankless water heater booster. Call us now to learn more and get one.

Yes, but a tankless water heater does more than save you money.

Savings: Space

Since tankless water heaters do not have tanks, they take up less space. You don’t need to have a utility room or area in the garage for your water heater. Your tankless water heater can be stored in a closet or under the sink. Extra space is valuable these days, especially if you’re living in a smaller home or condo.

Savings: Energy

Traditional water heaters hold around 30-50 gallons of water and keep it heated until you’re ready to use it. Depending on the size of your family and the amount of water your family uses, this could be costly. (Did you know that water heater energy usage is the second-highest source of energy use in the average home?) Tankless water heaters don’t hold water, so they heat the water as it comes in—no constant energy to keep 15 milk jugs’ worth of water hot.

Savings: Time

Tankless water heaters save you time in the morning because the water is heated as it comes through until you are finished. While a traditional tank does have hot water on demand, that’s only until the tank runs out. Then you have to wait for the tank to refill and warm up the water. Tankless heaters don’t have that lag time because there’s unending water flow from the tank to the tap.

Savings: Money

Most new homes have a traditional water heater already installed when you move in. If you’re looking to replace the traditional tank, however, there is some work required. While installing a tankless heater might present a higher price tag than expected, the overall financial gains will overcome that deficit. It will raise the initial investment, but it’s an investment worth looking into for your home and your family. When comparing the overall savings of space, energy, time, and money – the savings really can add up.

  The operation of an electric water heater is essentially the similar as that of a gas heater. It heats the cold water inside the pipe using the electric heating elements after bringing it in through the dip tube. Through the heat-out pipe, hot water rises in the tank and is transported throughout the house or shower .

  It with two pipes— one for cold water inlet and the other for hot water outlet— makes up the geyser. It is equipped with thermostat-controlled heating components. Water is not heated above a predetermined temperature value by the thermostats. Typically, a metal casing is used to enclose the tank, which is then covered with an insulating material.

  

Jnod electric geyser is the tankless ,which is no need to pre-heat the water. The hot water can be come out instantly. It has temperature constant function,the temperature difference is only ±1 degree Celsius.  Very comfortable and convenient .

Electric or gas? Which is better? In reality, there is no single answer to this question. The following factors all play a role in choosing what type of tankless water heater is best for your needs:

1.Efficiency / Operating Cost: While gas tankless water heaters are certainly more efficient than their tank cousins, their efficiency usually peaks at 80-85%. Conversely, most electric tankless water heaters are 98+% efficient. electricity costs are more stable and projected to rise much slower than gas rates in future.

2.Installation: Gas tankless water heaters have complex venting and combustion air supply requirements, especially when installed in a confined space, is that these requirements can make installation very expensive. Electric tankless water heaters are very small, and they can be installed in a closet, under a sink, in a crawl space, or a wide range of other areas where a traditional tank or gas tankless cannot. the installation of an electric tankless water heater is generally much cheaper than the installation of a gas tankless water heater.

3.Maintenance, Service Life and Warranty: Electric tankless water heaters require very little maintenance. In fact, other than cleaning the inlet screen filter occasionally. On the other hand, gas tankless heaters should be inspected annually by a trained technician to ensure safe fuel combustion and performance.

4.Environmental Impact: Electric water heater is no greenhouse gas emissions, small size reduces environmental footprint in manufacturing and ultimate disposal - future electricity generation to come from green sources such as solar, wind, and wave energy, gas water heater produces greenhouse gases and increases reliance on fossil fuels

In JNOD, we have a professional team to help you choose models with a most suitable electric water heater and we will help to fulfill various demands for hot water requirements!

When it comes to tankless electric water heater, one of the biggest mistakes is buying a unit that is too weak to satisfy whole house hot water needs.

You don’t want one that is too small to supply whole house hot water needs, nor too big that power cord could not support the amperage when the instant electric water heater works.

The power of tankless water heater should be as appropriate to your household hot water needs as possible.

How many kW for JNOD tankless electric water heater?

To properly answer which power do you need, you have to figure out below points beforehand:

1. How’s the temperature of inlet water at coldest time?

2. How many degrees could the certain heater heat up at how much water per minute?

Example:

If inlet water flow has 2L/min, max temperature rise of a 5kW model could be up to max. 35℃, But in the relatively cold area, winter time the coldest water temperature is 0℃, plus 35℃, it could only reach 35℃, even it works with full power, there still not hot enough for shower use.

But for the warmer area, in winter, inlet water still have 12℃, then total it could heat up to 47℃, it was quite good enough for your shower use.

In JNOD, we have a professional team to help you choose models with a most suitable power, no matter for single shower use or multiple points use, we will help to fulfill your different hot water requirement!

Of course not, it’s so easy. Please follow me to see how to install.  

Firstly, the installation must be in compliance with the National Electrical Code, your local electrical and plumbing codes.

1. Make sure the appliance is intact, and the fittings are complete.

2. Please make sure the main power supply, water pressure, grounding condition, ammeter and wire reach the standard of installation requirement.  

3. The appliance must be connected to properly grounded dedicated branch circuits of proper voltage rating. Ground must be brought to the “ground” at the circuit breaker panel.

4. This appliance MUST be permanently connected to the fixed circuit breaker. If you don’t use the heater, please switch off the circuit breaker.

5. DO NOT install this appliance near to tinder or strong magnetic field place. The appliance can be installed above or under the sink, and unit must only be mounted in a VERTICAL position near by the water fittings. Please electrify try the machine after getting through waterway.

Second, how to install?

●General

The Mini tankless electric water heater can be used for hand washing, kitchen and it can be installed above or under the sink.

●Mounting the unit

1. Locate an appropriate place on a section of wall as above mentioned.

2. Drill two holes of 6.00mm diameter: if you install the heater upright above the sink, the distance between every two holes is 172mm; if you install the heater upside down under the sink, the distance between every two holes is 150mm. Put plastic anchor in the holes

3. For Upright Installation, nail in the floor in upper hole. For Downward Installation, nail in the floor in under hole, fix the appliance on the wall with the below nail.

4. Fix the appliance on the wall with the fixed nail;

5. Then fix the appliance with nail in another hole, to make sure the whole appliance is installed on firm.

It is very easy, right? If you have any installation problems after purchase, please feel free to contact us

Water heaters can be a costly investment for home owners that you’ll be living with for over a decade. That’s why it’s important to consider cost, efficiency, and longevity of your new water heater. We’ve put together this comparison of Instant Electric Water Heater Against Storage Electric Water Heater to help homeowners and contractors decide on the type of water heater that’s best for you.

What Is Instant Electric Water Heater?

Instant electric water heater, also known as on-demand electric water heater or tankless electric water heater, use high efficiency heating element to heat water as it runs through inside the element and deliver it directly to faucets or shower without a huge water tank. Instant electric water heater is found that usually have 30% more efficiency than storage type.

Advantages

instant electric water heaters (also called “on demand” units or an instant electric water heater) use 30 to 50% less electricity than tank type, saving about $100 or more per year, depending on water usage.

· Water was heated only when you turn on the faucet.

· The main advantage is that they eliminate the extra cost of keeping big volume of hot water in a storage tank, so you waste less energy.

· Continuously hot water supply, which is ideal for filling a big hot tub.

· Much more compact than a standard water heater and mount on a wall.

In JNOD, we have a professional team to help you choose models with a most suitable power, no matter for single shower use or multiple points uses, we will help to fulfill your different hot water requirements !

A hot shower or bath is one of life’s little but most precious pleasures. And so, if you’re building a tiny house, you need a reliable water heater. But how to choose the best water heater for your tiny bathroom?

We’ve compiled a list of the best tiny house tankless electric water heaters from JNOD product catalogue today, according to user reviews, personal experiences, and top selling units.

1. Wide Applicability FE-T Model

FE-T 240V Instant Electric Water Heater is the perfect no-nonsense water heater for tiny house homeowners just looking for that simple, affordable solution. Several powers to your choices: 3.5/4.5/5.5/7/9/11/13.5kW, so you can find one to works for your home.

With an installation time of just one hour and a maximum flow of 7L/min, FE-T is also quite smart to adjust and operate with its touch key or WIFI function.

2. Super MINI KF Model

At just 2.9kg and tucked into such a compact frame, KF Electric Tankless Water Heater can be installed almost anywhere you might want, which is perfect for the size limitations of tiny homes. The small size also means that installation is simple and straightforward, so anyone who can read the instructions can safely install this in their home in no time at all. No need to call in a professional to install to help you heat water.

KF tankless hot water heater is often described as the best tankless water heater for tiny homes. Its compact shape means you can easily install it near its point of use, and in just 15 seconds you can enjoy hot water flowing. But the powers to select are 3.5/5.5/7kW, So it is also ideal for sinks and low-flow showers.

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Mr. Waterheater stocks many sizes of residential and commercial gas, electric, and power vent water heaters. The 40 gallon and 50 gallon gas and electric water heaters are the most common hot water tanks that we install for residential use. Although the 40 and 50 gallon size are most common, we install 2.5 gallon point-of-use water heaters, up

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Portable electric water heater for shower

3. Remove the 4 screws attaching the female vent. top to the water heater. 4. Lift up the female vent top and reposition as. desired (or replace with a male vent top). 5. Install the 4 screws at the vent top and tighten the. 4 screws at the bracket. Secure the first vent component to the water heater. with one self-tapping screw at the hole

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Instant Water Electric Geyser with Temp Control and DIsplay Details This electric geyser is an instant electric geyser as it heats up the water quickly. It is tanker less as it gets directly water from your water tank or your water pipe. You can install it anywhere you want like washrooms, basins, kitchen.

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