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Tankless Water Heaters, are appliances that produce hot water only when called for. Unlike conventional units that keep heated water in a tank that typically holds 40 to 80 gallons, a tankless unit heats water quickly on demand. And consumes less energy because you pay to heat only what you use. Reduced energy consumption means lower utility bills. In addition, a well maintained tankless system can have a life span that’s twice as long as a conventional storage water heater.

Basically, there are two types of tankless units:

Point-of-use water heaters are small enough to fit in tight spaces, typically under the kitchen sink or other areas in the home where hot water is needed. Incorporating several point-of-use units can reduce water heating costs significantly.

Whole house units are capable of simultaneously meeting hot water requirements at several locations, such as your dishwasher and shower.

Sizing is based on the flow rate that’s required and the temperature rise that’s needed. The flow rate is the amount of water that’s needed at any one time, and the temperature rise is the difference between the temperature of the water coming into the home and the temperature of the water flowing from the faucet. If the temperature of water coming into your home is 20 degrees, and you want water that’s 60 degrees at the faucet, the rise would be 40 degrees.

Are you considering a tankless water heaters?  We can recommend a tankless system that meets the specific requirements of your home. Please contact us to get the details.

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!

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.

Traditional hot water heaters can’t keep up with today’s appliances.

Newer solutions on the market, including tankless water heaters, change the way your water is heated.

When you turn on the tap, water flows through the unit and is heated before it reaches the faucet.

There is no storing, no useless heating and definitely no wasted energy on keeping the water at a set temperature even when you don’t use it.

Below are some tips on how to choose the best tankless water heater for your home

1. Consider the size of your home.

If your house is smaller or you don’t regularly use a lot of hot water, buy just one tankless heater for your entire home.

But if you do use a lot of hot water, you can also connect multiple units for whole-house water heating.

2. Gas or Electric?

Did you know that tankless water heaters are available in both gas and electric?

Make sure to choose the one that is most efficient for your home and your wallet.

3. Finding the properly sized tankless water heater for your home.

Unlike regular water heaters, tankless heaters are sized by the number of gallons of hot water they produce per minute (GPM), not their size.

It is recommended you make a rough list of how much water you use, and whether these usages collide with one another.

For example, you can use the rule-of-thumb sizing to do the estimation on your own.

Here are some rough estimations commonly used:

· 1 bathroom or 1-2 people requires 140,000 BTUs

· 2 bathrooms or 2-3 people requires 190,000 BTUs

· 3 bathrooms or 3-5 people requires 380,000 BTUs

Nevertheless, it is still best that you consult a professional plumber  to make sure your tankless water heater is the right size for your home.

4. Call a professional plumbing company.

Even do-it-yourselfers need to call on a professional sometimes, especially to install a tankless water heater.

This way you are completely confident your system is installed efficiently, effectively and correctly.

Additionally, you can ask for advice on how to suit this system according to your individual requirements.

5. Easily maximize your water heater’s efficiency.

You can maximize the potential of your heating system by insulating all of your exposed pipes.

This will make your water output produce 2 to 4 degrees warmer when it comes out of your faucet as well as protect your home’s pipes from freezing in the winter.

Now a day, tankless electric water heaters are getting better and better, it is a very wise choice for people saving energy bills, approve their financial status. Especially those using JNOD patent cast aluminum heating element, up to 97% heating efficiency will better save much more money than others.

Not decide yet? Then, take a look to below pros of tankless electric water heaters, it will help on the decision making.

Pro #1: Instant Endless Hot Water

Tankless water heaters can provide unending stream of hot water almost instantly. It supplies hot water within 3 seconds without the inconvenience of bulky storage tanks.

Pro #2: Longer Lifespan

For using our patent heating element, structure itself could anti-limescale, the element will not have limescale inside, even in very hard water area, it could still work at least 5-8 years, some even could last longer, like 10 years!

Pro #3: Cut Off “Standby Loss”

Unlike the storage heater, tankless type will only consume electricity when user open the valve, and heating efficiency of our heating is 97%, minimized energy loss, saving energy paid every day.

Pro #4: Space Savings

Tankless electric water heaters are much smaller than bulky storage models, even smaller than gas water heater. Installers usually mount them on a wall in an inconspicuous place in the basement. In smaller homes, the space savings is a welcome benefit.

When buying a tankless water heater, most people don’t know what size tankless water heater they need.

If you are looking to install tankless electric water heater and you’re unsure of which size you should buy, here are some factors you should take into account:

- The size of your house

- Flow Rate (GPM): How much hot water you will need at any given time

- Temperature Rise (ΔT): The difference between the incoming cold water temperature and the desired temperature

Your Household Size

If water heater is too small, it will result in it not being able to produce enough hot water for your household demand. For example, you might not be able to run more than one shower at a time, especially in the freezing winter.

On the other hand, water heater is too large, it will end up being more costly than necessary, since you will be paying more upfront for the larger size (although it could be useful if you plan to upsize your home later).

Hence, to work properly, a tankless water heater needs to be just the right size to meet your home's hot water demand.

Rate of Water Flow

Tankless water heaters are often referred to as demand water heaters. On-demand refers to having continuous hot water output for as long as the hot water tap is open. However, having multiple hot water taps open together will reduce the hot water output. Having too many hot water taps open at once will produce lukewarm water if the tankless water heater’s output capacity is exceeded.

To help you estimate the flow rates of most of your faucets, we shared some typical flow rates below. The actual flow rates may be different for your house and different appliances.

Temperature Rise

After you have calculated the flow rate of every faucet in your house, you must now determine how much heat your heater needs to generate to give you the required heat in your water outlets. We’ll take into consideration the temperature of the water that flows into your home and the temperature of the water that you want to flow out of your tap to determine the required temperature rise.

You might still have some questions relating to the size of instant electric water heater you need, please let us know in the comments below.

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 !

Would you like for taking a chilly shower? Perhaps not. If you have a large family, it can certainly be hard to get soaked in the morning . Oftentimes the hot water runs away before you please take a shower. A cold shower does not start the day on the wrong foot or so.

How can I get the endless hot water? Not only save energy but also can save cost . That sounds wonderful and amazing . We so happy to find it and this miracle device can be called tankless water heaters.

You can enjoy endless hot water just by opening the water valve, no need to wait to avoid wasting your time.

Comparing with the storage electric water heater and gas water heater, electric tankless water heater is the most suitable device to achieve purpose. Why we should go ? Please check the reasons:

Hot water on demand: Rather than traditional water heater, Hot water from electric tankless water heater come out in demand.

Cost savings: No need to pre-heating the water.

Energy efficiency: up the 97% high heating efficiency.

Never-ending hot water: Hot water keeping come out,endless hot water !

Space savings: Compact size，similar with ipad size，it takes up less space in your home than a large tank.

Longevity: long lifespan,up to 10 years！Tankless heaters usually last longer than older traditional tanked heaters, and you don’t have to worry about them bursting and spilling water all over your basement.

JNOD electric tankless water heater can meets all your image of water heater . The most prominent advantage is the unparalleled constant temperature function, only difference of ± 1 ℃ . Very comfortable . Enjoying a hot water bath is so easy .

Dear valued customers,

We sincerely invite to visit CHINA ( UAE ) TRADE FAIR which will be held from 19^th December to 21^st December at Dubai World Trade Centre.

You can find us at booth “Hall 6 , 6D21-6D22 “to present our new products! We hope to see you there and get in touch with you.

Our professional team will be present at the fair to answer all your questions.

See you soon on our booth.

Warm congratulations to JNOD for being recognized by the National Laboratory, becoming one of the first enterprises with national accreditation laboratory qualifications in the electric water heater industry.

Recently, JNOD accepted the China Metrology Accreditation Expert Review Group CMA qualification review, expert review group carry out on-site assessment with “laboratory accreditation assessment criteria” as the basis. After the on-site review, as well as a month of data submitting, JNOD Testing Center successfully passed the laboratory supervision and evaluation of CNAS n 21^st Oct, obtaining the laboratory accreditation certificate of China National Accreditation Service for Conformity Assessment (CNAS).

It is our first time to win this honor which marks our division detection capabilities management is being recognized, improve our competition in the industry and also be better to provide brilliant customer service protection to our valued customers.

JNOD Central laboratory in accordance with ISO17025 international standards for quality management system planning and construction, total area of about 1000 m². It is currently divided into safety test zone, comprehensive test zone, material test zone, salt spray test zone, reliability test zone, noise test zone, spray test zone and other professional zones.

With the support of complete and advanced laboratory equipment, the laboratory can complete the performance research, new product research and development, regular product testing and other work to ensure product development, technical innovation and quality assurance.

CNAS is a national accreditation body authorized by CNCA in accordance with law to carry out conformity assessment accreditation, which is highly authoritative, independent, impartial and international. To obtain CNAS national laboratory accreditation, the laboratory should not only have advanced modern experimental instruments for protection, but also in talent, technology, management to achieve accreditation requirements.

Taking this certification as an opportunity and a new starting point, JNOD will continue to optimize and upgrade the laboratory with the guidance of the expert group in the future, continuously improve the testing ability and technical level of testing personnel, and continue to provide guarantee for electric water heating research and development work, to ensure the accuracy and reliability of data, and escort the company to achieve innovative development.

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