Nobody likes to wash dishes with cold water on a cold day. However, heating the water by conventional means can take up to 2-3 hours. In this regard, you would surely want to save up some time. Well, there are many different ways to heat the water quickly. However, among these, a point of use water heater on the hot water line could be your smartest choice. 

Though, the market is full of vast array options with varying features. While scrolling through the endless rows of brands, it is very easy for you to get overwhelmed. So, it’s not an easy choice to make.  

With that, you cannot just randomly go and pick a water heater without doing enough research. If you do that, you will probably end up with the wrong choice. 

Nevertheless, if you are reading this buying guide, you have landed at the right place. This guide is like a one-stop-shop where you will find a list of the best options in the market. After going through this review guide, you will be able to make an informed decision of your purchase.  

Point of Use water heaters reviews 

Below, we have put together a list of 10 point-of-use water heaters that may come handy for you. These include:

Bosch Ariston GL4S 

Ariston GL4S Electric Mini-Tank Water Heater

Bosch is a legendary company that has produced millions of water heaters over the last decade. The prime quality of Bosch is that this company provides exceptional quality at affordable prices. With that, their line of water heaters bears no exception. The Bosch Ariston GL4S is among the best compact water heaters available in the market. 

A big number of people are concerned about the point of use water heater installation. However, the Ariston GL4S makes that easy for you. This is because it has a very compact design, which can fit anywhere. But on the other hand, it has a water holding capacity of only 4 gallons.

There are two ways to install this water heater. Users can either install this point of use water heater on a hot water line, or they can install it independently. Either way, it will significantly reduce the waiting time at the sink. Essentially, it will reduce the waiting time to less than a minute (or sometimes, just a few seconds).

User Critic

However, this bosch point-of-use water heater has a few downsides too. One thing that consumers complain about, is its small capacity. So, in case you have dozens of dirty dishes to wash, the hot water will run out quickly. After all, it holds only 4 gallons of water. With that, some users also complain about their unit shutting down after only a few months of usage.


  • Compact design 
  • Sturdy construction
  • A well-reputed brand with exceptional quality
  • Easy to install 
  • Comes with a warranty


  • Small water capacity 
  • Not guaranteed to last long

 Final Verdict 

In case you are looking for a compact option that will not take a lot of space, the Bosch Ariston GL4S is a perfect choice. However, it is not suitable for people who want a much longer run-time with higher capacity.  But worry not, we’ve got several options with higher capacities reviewed below.

Ecosmart POU 6 water heater

Ecosmart POU 6 Point of Use

Without a doubt, Ecosmart POU 6 is one of the smartest choices that you can make. And there are several reasons for this. Firstly, this point of use water heater is engineered with great precaution and care. So, if you are looking for a compact tankless water heater, it is a solid choice. 

Perhaps, the best thing about this water heater is that it doesn’t break your bank. Hence, it is a very affordable solution that provides you high value.  

According to the consumers, the Ecosmart POU 6 is most suitable for lower flow uses. This is because it has a flow of one gallon per minute. So, do not expect it to supply you with hot water for a very long time. For as long as you want to wash hands or just a handful of dishes, it’s perfect. 

Since it has a compact design with a sturdy build, you can fit it under your sink or inside small cabinets. This makes it an ideal water heater for wet bars, medical offices, strip malls, bathrooms, and RVs.

User Critic

One downside that customers complain about is that its design makes it slightly difficult to install. Usually, the quality of point of use water heater installation directly affects the performance. So, to get the best of it, make sure that you’ve had it installed correctly.


  • Sturdy build 
  • Compact design 
  • Affordable


  • Low water flow (1 gallon per minute)
  • Slightly difficult to install

 Final Verdict 

The Ecosmart POU 6 is a low-cost solution for those who want hot water flowing on the go. It is suitable for applications that do not require a high flow. If you’re looking for a higher flow time, then perhaps look into the other options.

Atmor AT900 – 13 

Atmor 2.25 GPM Tankless Water Heater

Atmor is one of the most popular manufacturers of point of use water heater for home and offices. Having decades of manufacturing experience under the belt, Atmor is a company that you can always trust. Their line of water heaters is specifically a trusted one!

Atmor AT900 is a cost-effective option, which may be much better than many other more expensive water heaters. Whether you need an uninterrupted flow of water at restaurants, clinics, bars, malls, offices, or at home, the AT900 is highly suitable.

It features highly effective sensors that detect the flow of water and its temperature. If required, the heating element will automatically be switched on. This will heat the cold water that is entering on one end and give out hot water from the other end. With that, the unit requires a pressure of at least 115 – 230 psi to function properly. 

User Critic 

One thing that users complain about is that this water heater does not have an automatic temp control functionality. In case the water flow is low, then the water inside the unit may eventually heat up to 150F. This can turn it into a hazard. 


  • Compact
  • High-quality build
  • Affordable 


  • No automatic temperature control 
  • Requires at least 115 psi pressure to work 

 Final Verdict 

Since this water heater does not feature automatic temperature control, it is suitable for areas that have a high water usage. Otherwise, if the water stays stagnant inside the unit, it will heat up to 150F, which isn’t safe (especially for children).

WaiWela WM-2.5 

WaiWela WM-2.5 Mini Tank Water Heater

When it comes to point of use water heater for a tub, the WaiWela WM-2.5 is among the cheapest options available. Though it is important to note that this is an entry-level water heater that is designed for low usage applications.  

In case you compare this point of use water heater, you may feel like it is rather subpar. However, people do not buy it because of its quality but due to its unmatched affordability. It is quite a decent option for anybody who is looking for a quick hot water solution.

Though, in case you want to use it for a tub, it may just get the job done but not as efficiently. This is because it has a very low water capacity, and is primarily suited for the sink. 

However, it features an adjustable thermostat with overheating protection. This is a feature that is usually seen in high-end water eaters only. Furthermore, it has a glass-lined tank, which allows you to see the water levels at all times.

When it comes to installation, it best works as a point of use water heater on hot water line rather than as an independent supply unit.

User Critic 

According to users, the WaiWrela WM-2.5 has a very low flow rate which means that it is suitable for washing hands only. Technically, users can wash dishes under it also. But, the water will run out quicker than you can imagine. At most, consumers say that you can wash only a few dishes at a time before going back into the waiting time.


  • It is cheap
  • Adjustable thermostat with overheating safety 
  • Glass-lined tank


  • Low water flow 
  • Not a highly reputed brand

 Final Verdict 

In case you are looking for an entry-level water heater, then WaiWela WM-2.5 is quite suitable. This water heater will just get the job done. However, if you have the budget, we suggest you dip this one and check out the other options on our list. 

Bosch ES4 Mini-Tank 

Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon

Bosch point-of-use water heater line is specifically known for its high quality. The brand is well-reputed because it has been manufacturing water heaters for over a decade. Now that the company owns Ariston, the mini-tank heaters by Ariston’s Pro Ti line have been rebranded to the 3000Ts by Bosch. 

There are three different sizes that the 3000T by Bosch come in. These include the ES8 by Bosch which is a large unit featuring 7 gallons of capacity. Then comes the ES4 which features 4 gallons of water capacity. Lastly, we have the ES2.5 that has only 2.7 gallons of water capacity.

Referring to the Bosch ES4 Mini-Tank water heater, it is a sturdy and compact option that will provide you hot water on the go. It features a 4 gallons water capacity, which is quite decent. With that, it also features temperature control options and an adjustable thermostat. 

Since it has a very compact design, you can either hang it on the wall or mount it under the sink. After all, the dimensions are only 13.75 X 13.75 X 13.5 inches. 

Yet another useful feature of this point of use water heater is that it has a very fast recovery rate. This means that you do not have to wait too long after running out of hot water. Technically, a new batch will be ready within a minute. This will allow you to wash dozens of dishes without waiting for several minutes between every round. 

User Critic

According to users, the ease of installation and fast recovery time is the best feature of this water heater. However, some users also complain that their units shutdown totally due to faulty heating elements after a few months of usage.


  • Fast recovery time 
  • Easy to install and mount 
  • Compact 
  • Well-reputed brand


  • Only 4 gallons of water capacity 

 Final Verdict 

Bosch water heaters have always been a reliable option. So, it is hard to go wrong with this one. Though, this particular model comes with a low water capacity. In case you are looking for the same quality with a higher water capacity, then check out their ES8 models. Overall, Bosch ES4 is a solid option.

Ecotouch Tankless water heater

ECOTOUCH Electric Tankless Water Heater

The Ecoutouch tankless heater is one of the best point of use water heater options out there. It is a highly efficient choice which is rated at 5.5 kW and runs at a voltage of 240V. 

The best thing about this water heater is that it features a smart self-adjustment option. This way, the power input gets automatically adjusted based on the temperature settings and water’s flowrate. For instance, in case there is a lower flow rate of water, the system will apply lesser power.  

With that, the Ecotouch tankless water heater is also quite durable. The company runs all the pieces through very strict tests to make sure that they are 100% safe.  

Lastly, this water heater has a very compact design (probably just as small as a box of oatmeal). This means that users can install it anywhere near the sink in the kitchen or bathroom. Furthermore, there is no limitation for the mounting direction. So, users may mount it in any direction as it fits. 

With dimensions of only 11 x 7.5 x 2.35 inches, this water heater is perhaps one of the most compact choices in the market. 

User Critic

According to most users, the Ecotouch tankless water heater works just perfectly. Some users have also tried it as a point of use water heater for tub. However, most users suggest that it is not as efficient for tubs. So, it is far more suitable for low flow applications.


  • Compact and very sleek 
  • Self-adjustment and modulation controls 
  • Runs at 5500 watts only 


  • May not have a high temperature
  • Suitable for low flow applications only

 Final Verdict 

In case you want a very sleek and compact water heater that will take less space, then the EcoTouch water heater is a suitable choice. However, note that it is only good for low flow applications. So, if you expect it to supply hot water endlessly, you need to reconsider. 

Rheem 240V water heater 

Rheem 240V Heating Chamber RTEX-13

The Rheem 240V water heater is a simple yet technologically advanced water heater that will get the job done right. It is primarily designed for those people who are looking for very straightforward controls without any complexities. 

The most notable feature of the Rheem 240V water heater is that it has a digital thermostat control. There is also a very sleek LED that shows the temperature with an accuracy of +- 1 degrees Fahrenheit. 

Furthermore, it also features a very simple installation method. So, users do not necessarily need a serviceman to install it. When it comes to energy efficiency, the Rheem 240V heater is rated at 99.8% efficiency. 

Lastly, it features threaded connections that allow simple installation and a very easy replacement. All in all, the Rheem 240V is a simple yet solid choice. 

User Critic 

While it gets the job done for most people, this point of use water heater may not be suitable for high temperatures. Some users complain that it is very hard for them to get the temperature just right. Furthermore, for shower applications, at least two of these units will be required. 


  • Supplies 3.17 gallons of water per minute 
  • Easy to install with threaded attachments 
  • Adjustable thermostat 
  • Led display with a reasonably high accuracy 


  • Hard to get temperature right 
  • Not suitable for high flow applications 

 Final Verdict 

For as long as you want to take a very quick shower, the Rheem 240V water heater may be suitable. However, for longer applications, you will need multiple units installed. Still, since it can supply 3.17 gallons of hot water per minute, it is quite a reasonable point of use water heater

Stiebel Eltrol 120V water heater 

Stiebel Eltron 074050 120V, 3.0 kW DHC 3-1

In case you are on an intermediate budget and want the best quality, then the Stiebel Eltrol 120V heater is the best option. Rated at around 3000 watts, this water heater uses lesser energy as compared to other heaters in the same line. Still, it delivers a decent output. 

In this regard, it is one of the most energy-efficient options. The most notable feature of this water heater is that it is controlled hydraulically. Another interesting feature that this water heater possesses is its resettable safety switch. 

With that, this unit also has a very low installation cost in comparison to all other tank-type water heaters. Though, this water heater has been designed primarily for single sinks. In case users want a higher flow time, then they will have to install multiple units. 

User Critic 

According to users, the best thing about this water heater is that it works at 120V only. So, users do not have to face the difficulty of acquiring 240V circuits. However, some users also claim that their unit got shutdown after some months of usage. Since multiple users have complained about this issue, expect this unit to survive a year at max.


  • Supplies hot water quick
  • Features a flow reduction valve
  • The heating system is made up of copper


  • Water may not be hot enough 
  • Requires a flow reducer 
  • Performance reduce in winters
  • Not long-lasting

 Final Verdict 

This point of use water heater is suitable in case you just want to get hot water on the go. It will do your job just fine for the period that it works for. However, as many users have complained, there is a risk of this unit shutting down after a few months. In that regard, the risk is totally up to the buyers.  

Camplux TE04 water heater 

Camplux Electric Tankless Water Heater

Camplux TE04 features an on-demand water heating system that supplies hot water on the go. It will heat the water within a few minutes whenever you want it, without any preheating requirements.  

This point of use water heater will heat the water up to 85 to 131 degrees Fahrenheit within a minute. With that, this water heater also has a very smart design, which makes it a highly valuable choice. 

It also features a smart touch capability, which further enhances its smart looks. With that, this water heater also features a digital display with a very sleek output. Since it is compact, it can be installed within the sink or mounted right on top of it.

Rated at 3.5 kW, the Camplux TE04 water heater is a great option for those who want low power consumption with high output. It is also designed to prevent all sorts of leakages and overheating to ensure that its usage is safe for everybody.  

This makes it an ideal choice to be installed in homes, offices, schools, and other buildings. Though, it is not designed to supply endless water for long periods. So, it may not be ideal for use in tubs and showers. 

User Critic 

Most users are satisfied with this product. However, some users complain that the water gets way too high sometimes which can be a hazard. This is because the temperature control is not as accurate. Still, it is highly reliable in terms of its long-lasting build and heating capabilities. 


  • Adjustable temperature control
  • LED display with great accuracy
  • Low power consumption


  • Water temperature too high sometimes
  • Not suitable for long run-times 

 Final Verdict 

For as long as you only want to use the water for 2-3 minutes such as to wash dishes or an instant shower, this unit will work great. But, remember that it is not designed for endless usage. After all, it is a compact device.


9 Best Point-Of-Use Water Heaters
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9 Best Point-Of-Use Water Heaters
Instead of a central heater that usually takes a long time to heat the water, You can use a point-of-use water heater. We selected the best POU heaters that you can install at the source so the hot water will be delivered to you in a couple of seconds.
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