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Are Point Of Use Water Heaters Efficient? Find Out The Facts

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Tim Rhodes

Are point of use water heaters efficient? 

You will understand that water heaters are essential items, every home must-have if you are on the ball. 

This unit produces hot water for your coffee and tea.

It also provides a lot of heated water for baths, especially during winters or springs. 

Besides, the water heater is also portable and space-saving. 

Therefore, the user gains a high heating power while using little space for it. 

Water heaters are also eco-friendly and easy to use as well as maintain, but are point of use water heaters efficient? – Let’s find out.


Why Use Water Heater?

Even your little kid in the elementary school can make himself a hot coffee while you are away. 

If you’re in a house with a distant sink and it takes a long time to receive hot water from the central unit, then it is high time you get the point of the use of water heater. 

Point-of-use water heaters deliver your heated water right before you know it. 

Likewise, it is also an energy-efficient unit that reduces the wait time. 

However, questions such as “Are Point-of-Use Water Heaters Efficient” have frequently asked questions on google. 

The last time I checked the FAQ on the water heater, I discovered that it has more than 20 questions on point of use water heater. 

So, to give a perfect answer to your question, this review is for you. 

It contains everything you need to know on point of use water heater, its basic features, the advantages & disadvantages, installation procedures, and how to choose the best spot for your home.

What Is The Point Of Use Water Heater? 

Point of use water heaters is one of the most efficient and effective water heaters on the market today. 

Also known as the Purpose of-utilization water warmers (POU).

Point of use water heaters is a little warming gadgets planned as the scaled-down stockpiling tanks or tankless units.

It worked as electric or gas-controlled, warming water in a split second, and providing fundamentally one apparatus with high temp water. 

They can be utilized in new or added to existing frameworks (retrofits), frequently introduced under the kitchen or restroom sink. 

This is the reason they are additionally called under-sink water radiators. 

POU units are famous in private and government business applications with constrained space and where the straightforward arrangement is expected to give high temp water quickly. 

Point of use water heaters are not intended for vast volumes of boiling water; however, to serve low volume installations.

For example, latrine sinks, in little lofts, bungalows, carports, including manufactured homes (RVs). 

POUs are, for the most part, utilized for a single application, as the individual units introduced at every installation, or in blend with the large radiators to help the warming and increment of the solace.

The point of using water heaters is little warming apparatuses structured as tankless as or smaller than standard stockpiling tank modules. 

These modules heat water in a split second and gracefully high temp water to a solitary apparatus utilizing power or gas. 

Point of use water heaters are commonly situated close to the spigots; in this manner, they get their name from it. 

These water heaters are well known in the business, and private parts having restricted space and require high temp water. 

These modules are intended to convey constrained boiling water gracefully to restroom sinks, little lofts, houses, and RVs. 

It Provides Heated Water, High Productivity While Using Least Assets

With a point of use water heater, you can quickly reduce the loss of water that occurs between the central water heater and the faucet. 

By improving your hot water distribution system, you can effortlessly reduce this waste. 

Apart from the fact that the point of use water heater reduces the loss of water, it also heats loss in the water distribution system. 

Energy savings measures such as adding insulation to pipes, fixing leaks, and installing low-flow showers heads are standard measures taken if you have to set the point of using a water heater for existing homes. 

However, installing a point of use water heater for a new house can be challenging, especially when you have to route the pipes and find a perfect location for the faucets. 

Instead of a central heater, POU water heaters are heated very close to the bath, shower, or sink where the water is used. 

When located far away from the central heater, point of use water heaters helps to boost the temperature of water at a fixture. 

Look no further than the point of using water heaters for users who search for a system-wide energy efficiency unit. 

Since these models have little or no capacity to support the full hot water demand, POUs aren’t perfect back-ups for solar water heaters. 

So, when do you need to install a point of the use of a water heater in your home? 

You might need to consider using a POU water heater if it is new and can’t be designed to minimize losses via a heat pump. 

You can also consider using a point of the use of a water heater when your household needs additional water load. 

Hot tubs are ideal units to use alongside POUs water heaters, especially if you are using electricity for hot water. 

Features Of Point Of Use Water Heater 

Like other water heaters under the sun, point of use water heaters is designed with fantastic and unique features. 

Let’s consider some of the essential characteristics of POUs water heaters. 

1. Energy Efficient 

One of the essential features of a point of use water heater is that it is energy-efficient and eco-friendly

These products offer high levels of energy efficiency at a budget-friendly rate. 

Unlike the standard units, these models use fewer resources. 

So you can be sure that you will only have to pay some bucks for power consumption and utility bills. 

2. Digital Display

Apart from energy efficiency, the digital display is another exceptional feature of the point of the use of a water heater.

The digital display allows you to monitor as well as control water temperatures to suit your taste. 

Likewise, the digital display also enables you to operate the unit without any challenges. 

Most of the POUs water heaters are built with digital displays as well as highly convenient touch controls. 

3. Build Quality 

If you’re in search of a high-quality water heater, you can do a lot by checking out the point of use water heaters. 

These units are designed with superior-quality materials to ensure their long-lasting operation. 

The point of use water heaters has their body built of stainless steel, which prevents them from rusting, fading, or discoloration, and ensures the durability of the device. 

Aside from the stainless steel material, the point of use water heaters also has high-quality heating elements. 

With the heating element, the water heater delivers optimum performance.

Meanwhile, some POUs feature different linings that safeguard them finish as well as the design of the heater from corrosion and rust. 


Warranty is another essential characteristic of point of use water heaters. 

Users must be sure that the device they are about to purchase comes with a manufacturer warranty. 

While some POUs comes with a 5-year limited warranty, others offer no warranty at all. 

With the warranty, you can be sure that your buying device will last for a lifetime. 

How Does a Point Of Use Water Heater Work? 

A state of point of use water heater is accompanied by or without a tank. 

A water heater with a tank is typically associated with the water gracefully. 

It can store water when water is required at a specific fixture, the warmer stores the water before conveying it to the spigot. 

A tankless point of use water heater works unexpectedly. 

Since it doesn’t have a tank, it warms the water at whatever point there is a water call. 

The streaming pace of the water commonly constrains the temperature of the water. 

A higher stream rate may yield a lower water temperature, while a slower stream rate would give high water temperatures.


Unlike the standard water heaters, point of use water heaters is easy to install or mount. 

This is because they have a space-saving design that can be put in place in any area or location with limited space. 

POUs water heaters function correctly in areas where the standard unit cannot. 

Since they are mini electric heaters, you would have no difficulties mounting them in the bathroom under the sink or the kitchen. 

Likewise, the product can also be installed inside the cabinets of apartments and condos, standing on the floor, in camps, as well as hanging on the wall. 

However, it is essential to consider the area where you want to install the POUs water heater before going for any unit. 

For instance, if you are searching for a point of use water heaters for hand-washing purposes, then smaller size units are ideal for you. 

Other chores such as showering, shaving, dish-washing, and many more require a higher flow rate unit, mostly the significant point of use water heaters. 

Meanwhile, POUs come with manufacturer recommendations as well as manual. 

This manual contains step-by-step instructions and guidelines on how to put the unit in place, so you don’t spend all day installing it. 

While some users choose to install the point of the use of water heater as the independent unit, others choose to put it in place as part of the in-line installation alongside with other heaters. 

The latter installation method is common to POUs, which are tankless. 

For a tankless point of use water heaters, you can mount them near the hot tap, on the cold supply line, or directly at the sink. 

If installed near the hot tap, you don’t have to purchase recirculating lines, nor do you need the pumps. 


There are a plethora of benefits that come with having a point of the use of a water heater in your home. 

These advantages range from having fast and easy access to heated water to energy efficiency and lots more. 

Let us consider some vital advantages of using a point of the use of a water heater. 

On the off chance that you live in a house that has a far off sink and it requires some investment to get boiling water from the focal unit.

The establishment of the purpose of-utilization high temp water warmers will diminish the holdup time, water, and vitality use. 

They are close to 100% vitality effective. 

This kind of radiator can likewise be utilized if there is a remote sink that isn’t served by a tank-type or tankless water warmer and where retrofitting is either excessively costly or unfeasible do. 

For a situation of the enormous structures, contractual workers may pick, rather than the high-limit tank model.

A few POU units, in this manner limiting the sit tight, an ideal opportunity for heated water conveyance substantially. 

As the units are committed to a single area, they will give a consistent boiling water stream. 

Likewise, when these small tanks are introduced following the tankless models, they work as support limiting the temperature variance, known as “chilly water sandwiching,” and expanding the solace. 

The POU water warmers, whenever introduced as suggested, can set aside cash. 

This incorporates establishment near the shower, clothes washer, and in the kitchen, by the sink. 

As referenced previously, the thought is to make the separation between the warmth source and the fixture as short as could be expected under the circumstances. 

Another extraordinary bit of leeway is the capacity to alter the water temperature on the spot as long as the units are introduced with simple access.


While there are some benefits of buying a point of use water heater, there are some disadvantages to purchasing it. 

One of the disadvantages of using a point of use water heater is that the models aren’t perfect for applications with high hot water demand. 

Likewise, you might find them inefficient if they have to provide a lot of heated water for large household consumption. 

So, if you are searching for a water heater to provide adequate hot water for a large household or commercial use, you can check out the standard models. 

Another widespread disadvantage if using a point of water heater is that the product can’t be used as the backup for the geothermal heat pumps or solar heating systems. 

This is because they cannot meet the demand when these items don’t operate. 

Varieties O Point Of Use Water Heaters

Like other water heaters on the shelves, point of use heaters is available in different sizes, shapes, designs, and features. 

The two major types are the mini-storage tank-type and the tankless heater. 

Unlike the mini-storage tank-type water heater, the tankless water heater had low water flow. 

However, it produces heated water continuously than the tank-type model. Mini-storage tank-type water heaters can deliver up to about 2 gallons up to 30 gallons of water at a time.

For users interested in the tank’s capacity rather than the number of gallons per minute unit provided, look no further than tank-type models. 

Unlike the tank-type units, tankless point of use heaters is famous as a result of their number of gallons per minute unit provided. 

Point of use tank-type water heaters have the same design as well as a feature with the large and talk standard heaters. 

However, the POUs only come with one heating element alongside the thermostat. 

Ecosmart and Tempra from Stiebel Eltron are the most popular electric tankless point of use water heaters. 

Also, Rheem 30-gal, SCH from Stiebel Eltron, and Ariston from Bosch are the popular types of an electric mini-tank type water heater. 

Eemax Tankless 

Eemax is one of the most popular brands known for producing hundreds of thousands of water heaters on the market. 

This unit from Eemax is ideal for users who are in search of a point of use water heaters for residential home use. 

Unlike other points of use, water heaters, Eemax tankless water heaters are electric models that function like tank-less appliances. 

These units heat water on demand and, at the same time, provide an endless amount of hot water to the point of use. 

Eemax tankless water heaters are available in single as well as multiple applications. One unique feature of the models is that they are beautifully designed. 

Eemax water heaters are perfect for users who are in search of a point of use water heater to complete the look of their bathroom or kitchen. 

Aside from the stylish design, the unit is built with high-quality materials, which make them durable and sturdy. 

These products are also compact and smart. 

You don’t need a lot of space to put them in place. 

The space-saving design also enhances speedy installation as well as simple handling. 

The models are also one of the most efficient points of use water heaters on the market today. 

This is because they are made of cooler, which is 99% energy efficient. 

Stiebel Eltron Tempra Point Of Use Water Heaters

Stiebel Eltron Tempra Point of Use Water Heaters are among the most durable and efficient water heaters under the sun. 

It is built as a replacement for the conventional tank-type heater. 

Unlike the traditional water heater, Stiebel Eltron Tempra is an electric tankless water heater that produces hot water to a point-of-use application or multiple fixtures and a single source in the whole-house residential. 

With Stiebel Eltron Tempra’s point of use water heater, you don’t have to spend a lot of bucks on your utility or electricity. 

It is known for its reliable and advanced technology, which delivers outstanding performance and design to reduce energy usage by up to 20%. 

When compared to the standard tank type, this unit is much more energy-efficient. 

Many users believe that energy efficiency is close to 100%. 

Stiebel Eltron Tempra has a space-saving design. You don’t have to remove an essential item in your bathroom or kitchen before you install it. 

It is also easy to carry from one place to another. 

You would also have no difficulties operating or installing it. 

Its lightweight design makes it easy to mount the water heater inside the cabinet, under the sink or on the wall.

It is also built with a sturdy coated steel encase, which makes it durable and sturdy. 

If you are in search of a point of use water heater that lasts for a lifetime, look no further than Stiebel Eltron Tempra. 

Its precise temperature control allows your little kid to operate it with no difficulties.


The off chance that you are hoping to purchase a water warmer that will give high temp water quick. 

On request and in unending flexibly, yet it is little and reduced, saves money on vitality and water, and is electric-controlled.

The EcoSmart tankless water radiators are one of the most selling electric brands on the web.

EcoSmart electric units worked in a few sizes from the littlest 3.5 kW POU model that is suggested for utilization administration and where the low water stream is required.

One of the significant distinctions between the over two kinds, aside from the limit, produced force, and hardware, is that purpose of utilization (POU) models don’t use the Flow Sensor Technology as the entire house units, making them easy to use with just ON/OFF choice. 

EcoSmart electric units are likewise structured as the water warming sponsors to expand the limit of the tank-type group. The sunlight-based reinforcement gives constant solace during the colder days when the sun powered boards are not working productively. 

You can likewise utilize them for space warming in hydronic floor frameworks.

Because of its tankless structure, EcoSmart ECO water radiators are planned little, minimal, and lightweight that doesn’t consume as much space as the tank-type. 

This is the thing that permits simple dealing with an establishment, under the sink, over the sink, on the divider, in the kitchen, washroom, office, carport, cellar, RV, private or independent venture.

Final Thoughts

The question remains, are point of use water heaters efficient?

Yes, depending on who and where it’s used. 

The point of using water heaters is that water heaters are ideal for residential home use and commercial use. 

Apart from the fact that these units reduce the loss of energy, it also eliminates water loss, thereby saving some bucks.

Here is a comprehensive review of everything you need to know about a point of use water heater for your home use. 

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