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10 Best Point of Use Water Heater reviews [2021]

Isn’t it great when you don’t have to wake up in the morning an hour before just to switch on your hot water unit? It all disrupts your sleep and at the same time increases your utility expenses! The best solution to combat such problems is a ‘point of use water heater.’

These small heating appliances are compact and deliver instant supply of hot water. They are designed as mini storage tanks or tankless units and heat water quickly to supply to a single fixture.

Small apartments, RVs, cottages, and numerous commercial units are all their customers as they provide high efficiency with minimum resource utilization and without augmenting utility bills.

If you too want to be delighted with all the benefits of point of use water heaters, get one now. For simplifying your buying process, check our shortlisted 10 best products along with other details including:

  • Features and Considerations
  • Comprehensive Buying Guide
  • Selection Criteria for a Good Point of Use Water Heater
  • Helpful questions and answers

10 Best Point of Use Water Heaters

1. Best Tank Water Heater – Bosch Electric Mini-Tank Tronic 3000T

Tank Volume – 2.5 gallons
Recovery Rate – 6.8 GPH
Temperature Range – 65 – 145 Degree Fahrenheit
Dimensions – 13.75 x 13.75 x 10.75 inches
Weight – 15.5 lbs
The High Points – best for small applications, quality for long life, latest thermo technology, independent installation, fast recovery rate
The Not-So – useful for small spaces only

Offering hot water instantly and equipped with a pressure / temperature relief valve, this heater by Bosch is engineered to perfection and lasts long. It is a superior quality piece integrated with advanced components and a perfect solution for small spaces. This lightweight and compact unit is easily mountable on walls, shelf, and floors. Installing this attractive and sleek design promises that you will never go wrong with it!

What Do Reviewers Say?

The reviewers find this hot water source awesome! It is very efficient, robust, silent, well-insulated and compact. Once the water gets hot it maintains for 24 hours. At a temperature of 98 Degrees, it yields around 5-7 gallons of hot water for dishes, showers, and other applications.

The other thing reviewers like about it is its small size, which lets it easily crawl under the kitchen space, sink, or cabinet to save space on the main floor. The small tank works equally efficient as the large tank and saves water by offering instant access.

Features & Considerations

Meet your hot water needs instantly with this electric mini-tank heater. You can use it as a supplement or under a single sink to meet varied applications. You can choose from 2.5 – 7 gallons tank size as per your choice. The thermal efficiency is up to 98% and you just have to plug it into a 120 Volt cord.

The premium glass lined material for the inner lining is complemented well with thick CFC-free foam insulation offering maximum energy efficiency. The fast recovery rate eliminates long wait hours for hot water and brings on demand hot water at every requirement.

2. Best Reheat Technology – Ecosmart ECO MINI 2.5 120V Electric Tank Heater

Tank Volume – 2.5 Gallons
Recovery Rate –
Voltage – 120 volts
Dimensions – 16.2 x 11 x 11 inches
Weight – 15.8 pounds
The High Points – excellently insulated tank, precision engineering, compact and easy to install
Not so – the provided instructions are not much useful

Meeting everyday hot water requirements will now be much easier with this wonderful heating unit. It is small enough to perfectly fit under the sink with all waste disposal and drain lines fit around.

It is an amazing unit with an ultra-flow shower system. The relief valve and metal coupler are tight and nice and work fine.

What do Reviewers Say?

The most impressive thing to the reviewers is the amazing insulation of the tank. After doing a lot of research they have found it one of the best heaters to meet the hot water demand of small to mid-sized houses.

Though it does not have a great capacity, it reheats fast so it works fine to fill horse buckets with hot water and then return back for more.

Features & Considerations

This heater can be installed directly at the sink or into the water line. It saves your money from costly recirculating pumps and lines. It eliminates the wait for hot water especially when you require more volume.

It is compact and lightweight and needs to be plugged into a standard 100V outlet. With 99.8% energy-efficiency, it saves you a lot of money, which is otherwise spent on utility bills. It is corded-electric and holds wattage of 1440 Watts allowing efficiency at every step.

3. Easiest Installation – Stiebel Eltron 233219 Mini-Tank Water Heater

Tank Volume – 2.65 gallons
Recovery Time – 18 minutes
Dimensions – 18.11 x 11 x 10.5
Weight – 7.2 kg
The High Points – corrosion-resistant tank, convenient temperature adjustment, releases hot water fast, flat back, and convenient installation
Not so – It has no drain valve

Made in Germany, the Stiebel Eltron SHC mini-tank is curated to put hot water exactly where you require it fast. This energy and water saving solution enhances convenience and supplies enough water needed by a small family.

The European, sleek, and attractive design complements every décor whether it is hidden under the sink or exposed to view. You can use it as a stand-alone device or plumbed with hot water to minimize delays.

What do Reviewers Say?

It is a newer design with a smaller water volume to heat up and fast recovery time. It works excellently well and is quality made. It comes with a one month warranty and a fantastic pressure relief valve.

The installation is super easy and it works exactly as mentioned. The product is nice and perfectly caters to most of the daily hot water needs. The only drawback is the lack of drain valve.

Features & Considerations

It is a flat back design that makes installation space-saving and east. It comes with a bracket or can sit on the floor. With an 11 amp current draw, there is no special wiring needed. Fill the SHC tank with water and just plug it into the standard electric outlet with the factory-installed plug and cord.

It features a simple thermostat dial, which offers convenience situated on the top for simple temperature adjustment from 86-140 Degree Fahrenheit. A unique frost protection setting can be chosen to avoid internal tank temperature higher than freezing.

4. Best for Single Faucet – Ecosmart POU 6 Electric Tankless Water Heater

Max Amperage – 29
Voltage – 220 Volts
Dimensions – 6 x 11 x 3 inches
Weight – 1 pound
The High Points – flow controlled mechanism, compact size, perfect for single applications with high flow rate, high-quality internal components
Not so – quite expensive than its counterparts

This is a powerful tankless heater that operates using electricity. It is designed particularly for single, under the sink applications and delivers a maximum flow rate of 0.5 gallon in one minute.

Installing it is very simple as the size is compact and lightweight that makes the task very easy. Being available in different sizes, you can pick a model that meets your home requirements perfectly. From strip malls, wet bars, to recreational vehicles, kitchen and bathroom sinks, you can use it everywhere you want.

What do Reviewers Say?

This does not work as great as a regular tank-type heater, but is perfect for a single faucet. It offers about 120 Degree water and the low-volume clearly justifies the utility bills. This is what impressed the reviewers the most.

It starts working instantly and takes just a second to flow out hot water. Hence, you don’t have to wait longer for receiving hot water again and again. The reviewers find the connections and wires of very high-quality. User-friendly instructions and good mounting template!

Features & Considerations

It is a 6-Kilowatt electric water heater perfect for all kinds of household applications like bars, bathrooms, doctor’s offices, recreational vehicles, malls, offices, and others. It delivers a maximum flow rate of 1.0 gallons every minute and is equipped with 0.5 gpm sink aerator.

It is useful for single fixtures and not meant for multiple fixtures. For cold climatic conditions the POU 6 is used. It needs 10 AWG wire and can offer 0.5 GPM in warmer climates.

5. Best Vent-Free Heater – Sitebel Eltron 224201 Electric Water Heater

Voltage – 240 Volts
Dimensions – 14.25 x 8 x 4.12 inches
Weight – 6.89 pounds
The High Points – requires no venting, reduces run time of hot water pipes, outperforms big hot water tanks, needs less voltage
Not so – it serves hot water to only one shower at a time

Quench your instant hot water requirements efficiently with this tankless water heater. A flexible and powerful heating solution heats hot water immediately with up to 50% less power consumption.

It is a seismic proof construction offering reliable and efficient performance from the proprietary technology. It leads no scalding and controls temperature by setting the external dial. With advanced microprocessor technology, you are always ensured that the water temperature does not fluctuate from the set point of flow.

What do Reviewers Say?

Reviewers loved the simple plumbing design of this system. It comes with two temperature sensors and has micro adjustments that save power to a great extent. Its sleek design fits anywhere.

They liked the fact that the shower temperature stays solid. Also, it needs no maintenance and lasts roughly twice as long as the tank water heater. Just make sure you follow the load and wiring requirements carefully so that you don’t experience any hassle while using it.

Features & Considerations

Excellent at offering hot water, this unit comes with a heating element controlled using a flow switch. Hence, it never dry-fires or leads to premature failure. Being hydraulically controlled, it delivers quiet operation.

The resettable safety switch is another unique feature of this device. The completely rugged copper design offers years of reliability. For this reason, you can use it in bathroom sinks, kitchen sinks, utility areas, laundry areas, RVs, and boats. Most importantly, it has a smart microprocessor technology that regularly monitors details from the flow sensor.

6. Most Energy-Efficient POU Water Heater – EcoSmart ECO 11 Electric Tankless Heater, 13KW at 240 Volts

Voltage – 220V
Wattage – 13000 watts
Dimensions – 3.7 x 8 x 11.5 inches
Weight – 6.5 pounds
The High Points – compact design, digital temperature control, self-modulating technology, saves up to 50% heating cost, replaceable elements
Not so – running two showers at a time disturbs the water flow

Enjoying everyday living is now possible easily with the life-enhancing electric tankless water heater by EcoSmart. Delivering endless hot water, it is a time saving and money saving design that reduces overall water and energy use.

This safe and reliable water-heating unit is technologically advanced and perfect to use in a multitude of applications. It is a dependable and easy to install unit backed with rich customer support.

What do Reviewers Say?

It is one of the great water heaters the reviewers have found so far. It delivers consistently hot water, excellent performance, and amazing energy savings. For the best performance, just open all water faucets so that there is no air inside the pipes.

Its working capacity is more than sufficient for any normal house. For installation, it needs a minimum 125amp electrical panel with 60amp pole breaker connecting unit. If you use it in colder areas where more hot water is needed then the gallons of water delivered will be limited.

Features & Considerations

Featuring the advanced self-modulating technology, it utilizes a small amount of energy to heat water. It turns on only when hot water is required. This 13-kilowatt unit runs on electricity and can deliver between 1.3 and 3.1 gallons water per minute.

It is suitable for regions where temperature is 67 Degree Fahrenheit and above. The digital temperature regulator lets you pre-set the temperature requirement and heat water accordingly.

7. Overheat Protected – ECOTOUCH Tankless Water Heater

Volts – 240Volts
Wattage – 5.5 KW
Dimensions – 14.3 x 10 x 4.4 inches
Weight – 6.29 pounds
The High Points – intelligent self-adjustment, immediate hot water supply, easy use, durable, safe, sleek design, easy temperature setting
Not so – it does not supply consistent water if flow rate is more than 2.5 GPM

It is a compact and sleek design holding lightweight. The attractive design blends it perfectly with décor. It is highly capable of delivering hot water in steady streams. The sufficient flow rate is 1-1.5 gallon per minute leading to no standby or preheat energy loss.

It adjusts power input on the basis of temperature sitting and flow rate in real time. Equipped with numerous protection devices, every component goes through a stringent test to offer you 100% safety.

What do Reviewers Say?

It impressed reviewers with its remote control functionality, which allows setting temperature controls right from the comfort of your bed. The touch control panel and digital display are smart features perfect for the modern users.

The ease to install in various positions is another great feature that impressed the reviewers. It appears of great quality and is backed with sound customer service.

Features & Considerations

With smart modulation heating technology, this tankless water heater offers endless and instant hot water. It provides an optimal thermal efficacy of 98% and reduces energy cost to a great extent. It heats up to 1.2 GPM water from 67 – 109 Degree Fahrenheit.

This compact size gives you freedom from bulky storage and avoids bacterial growth and rusting problems that can lead to health issues. Based on smart modulating control for stable temperature control, it heats the water to exact requirement. Hence, rather than scalding hot water, you always get hot water at your preferred temperature.

8. Best for Residential Use – Camplux ME25 Electric Water Heater

Voltage – 120 Volts
Wattage – 1440 Watts
Dimensions – 17.25 x 11.75 x 10.38 inches
Weight – 3.2 ounces
The High Points – high energy efficiency, reduces heating loss, 2.5 gallons capacity, plug-in style, freeze and thermostat protection, great built
Not so – It comes with a short length electrical cord

The compact size Camplux water heater is a viable way to avail of hot water instantly and whenever you want. It is integrated with an adjustable thermostat that sets once and afterwards automatically regulates water temperature.

If you don’t use the water for an extended time period, then it guards it against freezing and from being wasted. It is easy to maintain and holds a long-life while being energy-efficiency at the same time thereby saving you bills on energy and wastage.

What do Reviewers Say?

Amazed by its performance, the reviewers state it as very easy to install and super convenient to use. It works perfectly for most of them and can handle the camping requirements of a small family.

In addition to a clean and elegant look, it is fully-functional and can raise and maintain the water temperature level to about 10 degrees.

Features & Considerations

Having a capacity to store up to 2.5 gallons of water, it is a perfect companion to patio kitchen, attic, garage, basement, or even in a boat. The easy installation lets you gain immediate hot water supply without spending on expensive pumps and circulating lines.

This robust glass-lining offers amazing insulation and enhanced durability, while its fast recovery rate eradicates long waiting hours for hot water. There is an external dial for easily controlling the temperature range and CSA listed pressure and temperature relief valve adds to your safety. A cherry on the top has an attractive and stylized exterior.

9. Best Propane Point of Use Heater – Rinnai Outdoor Hot Water Heater

Voltage – 120 volts
Dimensions – 9 x 14 x 23 inches
Weight – 47.4 pounds
The High Points – high efficiency, unique vacation mode, schedule, and timers, save valuable space, sustainable reliability, cut carbon dioxide emissions
Not so – it is a heavy-weight unit

No need to choose between applications as this tankless heater will ever be short of hot water. Its compact design permits easy installation in non-conventional areas like the attic, closet, or even crawl space. It is equivalent to the size of a small luggage bag.

With its incomparable innovation and unsurpassed quality, you only bring peace of mind to your home.

What do Reviewers Say?

It is a super energy-efficient unit with amazing temperature control features that pleased most of the reviewers. They are stunned by its volume and efficiency.

It is a great heater that runs efficiently and supplies hot water in just a minute. This is an outdoor unit, which means no containment, no vents, nothing! Installation is quite challenging as it is slightly heavy.

Features & Considerations

It is a wise investment as every part of this unit is replicable. One of its splendid features is the Wi-Fi monitoring that lets you monitor the efficiency of your unit and address issues immediately.

It is based on ThermaCirc360 technology that recirculates hot water through the pipes. Having a flow rate of 6.5 GPM, it is an outdoor installation unit. The 2.0 mobile app timers let you schedule the hot water requirement throughout the day and remotely switch off the system into vacation mode.

10. Best Build Quality – Stiebel Eltron 239223 Water Heater

Amperage Capacity – 120 Amps
Voltage – 240 Volts
Dimensions – 4.63 x 16.63 x 14.5 inches
Weight – 1 pound
The High Points – German engineering technology, digital display, pre-set temperature buttons, advanced flow control, silent operation, compact and small
Not so – The installation is simple but requires professional assistance.

It is a great product featuring unique Advanced Flow control German patented technology introduced by Stiebel Eltron. It maintains constant water temperature automatically for enhanced comfort. It uses 20% less energy than conventional water heaters. This saves a lot of energy.

It is a top-rated design performing to the top-notch standards for reliability and comfort. No venting is required for this quiet operation unit. With this heater, you always enjoy consistent hot water supply.

What do Reviewers Say?

The reviewers rave for this lightweight unit, which is very easy to mount on a wall. It is worth every penny. The quality is very high. Almost every reviewer who tried this unit was blown away by its efficient performance.

This model is capable of delivering exceptional results. It can be conveniently fixed and supplies hot water on a regular basis. They are super happy with it. The easy to use interface and extremely quiet operation makes it an optimal choice for all applications needing hot water.

Features & Considerations

Designed with digital displays, it maintains accurate temperature performance and enhances energy efficiency. The pre-set temperature settings make sure you only have to switch the unit on and avail of hot water supply.

Another great feature of this equipment is advanced flow control. It automatically maintains the temperature for hot water for constant comfort. Hence, your showers always remain hot. The latest self-modulating functionality, 99% energy efficiency, and zero standby losses make it a perfect fit to every household and commercial application.

What Makes a Good Point of Use Water Heater for You?

  • Choose the Type of Heater

A good point of use water heater is one that appropriately meets your requirements. For this, you need to be sure about the type you pick. These units are either Tankless or Tank-based.

Tankless POU heaters do not have a storage tank and work in the same way as whole home water heaters. They do not store any water but heats it when there is requirement for the same. This saves energy spend on heating the stored water. Instead of keeping hot water stored, it supplies instantly when there is need. Most of these units are rated for 2.0 to 2.5 gallons per minute. The good feature about them is that you will never run out of hot water.

The other type available is POU heaters with a storage tank. They have a small size storage tank, which keeps the water stored at a constant temperature. The size of the tank varies from 2.5 gallons to 20 gallons. You can pick a model depending on the number of fixtures you wish to connect.

  • Features to Look For

The best POU water heater is equipped with some amazing components that support in extending the heater’s lifespan, increase its efficiency and performance, and automatically regulate the system.

Most of these units are incorporated with metal tanks. But there are a few models available with plastic tanks. Make sure you always pick a model that holds great resistance to corrosion.

These heating units mainly equip a single screw-in style of heating element that possess a power range from 1.5 to 2 Kw. They transfer heat efficiently and directly to the surrounding water.

Units with storage tanks are safeguarded from the corrosive impacts of hot water. It is because they are coated with glass or ceramic coating and combined with the anode rod.

Units with 120V are provided with cord that can be plugged into a standard outlet. While units with 240V come with a junction box and allow easy installation.

  • Energy Efficiency

Energy-efficiency of your heater mainly depends on whether it is gas based or electricity based and whether it has a storage tank or it is tankless.

These water heaters eliminate water wastage that runs down the drain while hot water travels from a distant unit. It is not common to wait for a few minutes, provided that a standard shower utilizes 2.5 gallons of water in a minute. Hence, the amount of water wasted reduces to a great extent.

The cold water coming out of the faucet first was initially hot water. It was heated by the heating unit and then delivered to the pipes before the faucet turned off. The energy utilized for heating the water ends up being wasted when the water is not used and it again cools down in the pipes. Hence, this results in wastage of both energy and water.

POU heaters are prone to reduce the amount of energy and water wasted, which in turn reduces utility bills and adds to energy-efficiency.

  • Installation

The space – saving design of these units allows perfect installation in every area with limited space or where you cannot mount a standard heater. These small and compact heaters can be installed almost anywhere, in the bathrooms and kitchen under the sink, condos, cabinets of apartments, hanging on the wall, in camps, offices, stores, and other places.

The size of the heater you select depends on the availability of space where it will be installed. Make sure the space has power supply. Units of small size are mainly used for tasks such as hand-washing, while the bigger models with higher flow are useful for showering, shaving, dish-washing, and supplying more than one faucet.

The best heater is one that allows easy installation and supplies even distribution of water to all faucets.

Selection Criteria | How We Ranked the Best Point of Use Water Heaters

When you wish to buy a POU water heater, you have to be sure about it. To confirm your decision, here are some really imperative traits you must take into account.

1. Size

Just like other appliances, even these heaters come in various sizes. Decide an area where you want to install it, like under the bathroom sink, near the kitchen cabinet, and others. Then choose a size that is an apt fit to it. Avoid picking a bulky or too small option.

2. Thermostat

You definitely don’t need the same level of temperature throughout the year. It is, therefore, essential to pick a unit with temperature modulating technology. POU units with adjustable thermostat let you easily select the preferred temperature level.

3. Heating Element

Most of the heaters fail to perform well because of their low-quality heating element. It is an extremely essential part of a heater, and hence, it must be strong enough to deliver flawless performance. Whether you select a tank based or a tankless heater, it must be built-in with a high-quality heating element that works well and renders great efficiency to the entire unit.

4. Size of the Tank

If you want a heater for yourself then a small tank would do the work. But if you want to cater to the needs of your entire family, you must pick a unit with at least a medium size tank. Also, an appropriate tank size ensures there is adequate storage available.

5. Hot and Cold Water Inlets

Another essential aspect worth considering is the cold water passages and inlets for hot water. Check the installation lines before fixing them permanently. Improperly done lines can impact the performance of your heater.

Frequently Asked Questions

Q1. How does a Point of Use Water Heater Work?

A. Point of use heaters are either tankless or come with a tank. A tank-based unit is primarily connected to the water supply line and stores hot water. This stored hot water is supplied to the necessary faucet.
A tankless water heater does not store water as it has no such tank. It heats the water immediately whenever there is a need. The water temperature is usually controlled by the water’s flow rate. A higher flow rate yields low water temperature and a slower rate yields high water temperature.

Q2. Does point-of-use water heaters work well?

A. Definitely yes! These heaters are equally powerful as other water heaters. The only difference they hold is in terms of functionality. They do not heat the entire pipeline connected to them, rather works near to the faucet. Hence, you get instant hot water in the faucet close to them. They are great to meet the short-time requirements of a user.

Q3. Why do a few POU heaters go cold?

A. Going cold implies a water heater runs into a cold water layer. It indirectly implies that the product you have selected can experience sudden fluctuations in temperature. So, when you receive warm and hot water, you may witness this issue. In such a situation, you may have to ask for professional help.

Q4. Are point-of-use heaters useful for showers?

A. Yes, these units can be installed at the bottom of the shower. It is an easy task. You just have to install the unit properly. It will function for a limited quantity of water. Also, the rate of flow may also be slightly compromised. But it is still a good option to select as it saves lots of water and reduces energy consumption.

Q. What is the difference between an electric whole home tankless water heater and an electric POU water heater?

A. A whole-home heater is large enough to heat all kinds of hot water applications from just one location. An electric point of use tankless heater usually serves a single plumbing fixture.

On a Concluding Note

Buying a good point-of-use water heater is quite a task. Hope our reviews and detailed guide helps. Happy buying! 

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