6 Best Smart Water Heater Reviews, Gas & Electric with Price

Looking for a smart water heater for your bathrooms and home water needs? Well, we are pleased to inform you that you have arrived at the right place. Our goal hereunder is to provide you the guidance to that end. We are going to do this by identifying and review six of the best smart water heater at the moment.

What Is the Best Smart Water Heater?

Comparing the Smart Hot Water Heaters on the Market

Photo Title Price Buy
American Standard CE-12-AS...image American Standard CE-12-AS 12 gallon Point of Use Electric Water Heater Check Latest Price
Thermoflow Electric Mini...image Thermoflow UT10 2.6-Gallons Electric Mini-Tank Water Heater for Under Sinks $139.99 Check Latest Price
Tankless Water Heater...image ECOTOUCH Electric Tankless Water Heater $119.99 Check Latest Price
Ecosmart ECO 36...image Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater, White $394.99 Check Latest Price
Sio Green SIO18...image Sio Green SIO18 v2 Infrared Electric Tankless Water Heater Check Latest Price

Best Gas/Electric Water Heater Reviews of 2020

#1: American Standard CE-12-AS 12 gallon Point of Use Electric Water Heater

smart tankless water heater



Short on mounting space? Place your bet on this particular heater. It has the ability to deliver the water output at the point of use. This negates the need to set aside plenty of space to fix a tank or reservoir. At the same time, it gives you pretty reliable performances.

  • Inner Dura glass-lined Tank

It comes about with its own tanks. The interior of this tank is lined with glass to make it capable of preventing the loss of heat. At the same time, it stands tall to the effects of corrosion to allow for long-term use. During its makeup, the glass is fired at 1,600°F.

  • Brass Drain Valve

A drain valve also exists as a core part and parcel of this heater. This one plays the role of regulating the flow of the water out of the tanks. It prevents a situation in which the tank may burst open or inflict water damages. It also reduces the deposits of the sediments in the tanks.

  • Brass Temperature/Pressure Relief Valve

Other than regulating the level of water in the tanks, this heater has a valve that regulates the levels of temperature output. This valve is installed at the factory and plays the role of maintaining you in a complete state of utmost safety. In this way, it gives you added confidence to tackle your chores.


Useful in faraway locations
Fits well in the confined spaces
Enjoys a more comprehensive warranty
Tested and vouched for safety at the factory
Suitable for commercial and residential applications alike


Has lower water carrying capacity
Not for households with many occupants
Cannot endure the test of time


#2: Thermoflow UT10 2.6-Gallons Electric Mini-Tank Water Heater

smart tankless water heater



Looking for a water heater to install under the sinks? This is the one to set your eyes on. It is small compact and at the same time snugly fits the stated areas. Then again it is able to deliver a higher power output than your ordinary heater is capable of.

  • 2.6-gallon Capacity

It does have the ability to heat up 2.6 gallons of water at any given time. This water, it draws from a tank with similar capacity that tucks underneath your sink. On the account of this makeup, the appliance is able to generate and deliver the hot water right where you need it.

  • Thermostat Function

The appliance does come equipped with a thermostat functionality. The functionality basically aids with the conservation of energy. It achieves this end principally by managing a low standby loss power consumption. All you have to do is set the desired temperature threshold beforehand. The pleasure of greater savings is yours to leverage.

  • EPS Foaming Technology

Throughout its makeup, the EPS Foaming Technology is used extensively. Thanks to this technology, the heater operates and brings about the desirable ends faster and more effectively. This way, it eliminates the excessively long waiting hours you have to endure while anticipating the needed ends.


Allows for safer installations
Cuts down the needed wait times
Can supplement the primary heat sources
Its handling capacity is pretty high
The electric thermostat stops automatically to prevent overheating


Unsuitable for use anywhere besides the under the sink
A simpler user may find it quite complicated
Delicate and highly prone to damages


#3: ECOTOUCH Electric Tankless Water Heater 

ecosmart water heater



Searching for the right water heater for commercial elements? We have this one for your own consideration and subsequent use. This one is packed with loads of controls and technical features. It also has the ability to generate a whopping 5.5kW at around 240V. Due to its efficiency, you will also cut down on costs.

  • Instant & Sufficient Hot Water

Overall, the heater generates sufficient hot water instantly. It draws its power from a heating system that is rated 5.5kW. This one attains the high-temperature threshold of around 116°F. On the basis of this arrangement, you may be sure to enjoy reduced waiting periods as you have your way.

  • Smart Self-adjustments

Unlike your typical water heater, the adjustments of this heater are automated. Indeed, the appliance adjusts its power input on the basis of the rate for the flow of water and the temperatures. All these it does instantaneously and independent of your own input and effort.

  • Convenient Use

When all factors are put into consideration, the gadget does manage to give off convenient applications. This is largely brought about by the touch control panels, digital display units, and an easy to view panel for your monitoring. All these negate the need key in too much effort and attention.


Safer and truly durable in nature
Its water and electricity lines operate independently
Approved by the Electronic Testing Laboratories
Compact enough for remote applications
Saves on energy use and expenses


Comes at too great a cost
If broken costs a lot to repair
Does not fit the standard home space


#4: Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater

smart electric water heater



Do you operate on a schedule that is too squeezed? Pick this heater that is loaded with tons of automated controls features. They are designed to operate independently of your own input and support. In doing so, they yield the necessary outcomes but at limited effort on your part.

  • Self-modulating Technology

Advanced self-modulating technology forms the core of the machine. Thanks to this technology, the heater adjusts your own energy use on the basis of how much water you need. In light of this, it cuts down the effort you would ordinarily have to put to enjoy the desired end.

  • Stylish and Advanced Design

Next, the gadget incorporates style and advancement in its design. It subsequently handles the necessary chores while at the same time adds some elegance to your rooms. Thus, you may consider using it to enhance the décor of your interiors. This way, you get to enjoy added value for money.

  • Digital Temperature Controls

A set of digital temperature controls also forms a vital part and parcel of the heater. The controls vary the temperatures of the water by a factor of 1 degree. This enables you to emit the water output at levels that are most desirable to you.


Comes about in a compact and sleek design
Boasts of the 99.8% energy efficiency
Yields maximum efficiency in the course of the use
Displays the temperature output via a dedicated display unit
Heats nearly 3.5 gallons per minute


May predispose you to the risks of forgetfulness
Likely to confuse a simpler user
Does not allow for any upgrades and attachments


#5: Sio Green SIO18 v2 Infrared Electric Tankless Water Heater

smart hot water heater



Searching for a heater to use for a prolonged duration of time? This is the one to rush to. It does have the ability to deliver hot water instantly, like any other appliance. However, it stretches beyond that to ward off the need for constant repairs and maintenance.

  • Automatic Modulating Technology

Standing tall among its elegant features is the automatic modulating technology. This is largely made possible by a piece of software that is built into the system. The software basically makes the heater to automatically detect the desirable temperature output and respond appropriately. It is more accurate and less strenuous than the manual approach.

  • Temperature Adjustment

The gadget also adjusts the temperature output accordingly. It does not have you to put in too much effort on your part to be able to achieve the desired ends. This way, it yet again spares you from the need to devote plenty of your time to operationalize it.

  • Quick and Easy Installation

On the whole, the appliance allows for quick and easy installations. Moreover, it also allows you to install it in varied ways. Chief examples of these are the hybrid, parallel and series. Regardless of the installation mode that you choose, you may be sure to enjoy higher rates of flow.


Requires almost no maintenance in its entire life
Does not suffer a spate of corrosion
Resists any form of Calcium deposits
Manages superior heating efficiency
Operates for durations that are longer than average


Costs a lot to come by
Requires plenty of space to install
Only for the professional user or workman


#6: Rheem XE80T10HD50U1 80 Gal. Hybrid Electric Smart Tank Water Heater

best smart water heater



Of all the smart water heaters we have in our consideration, it is this one that stands out. It has the ability to pair and communicate via Wi-Fi connectivity. This allows it to get to areas that are far removed from the mainstream. All these you do in the comfort of your room via smartphones.

  • Integrated Wi-Fi Connectivity

Integrated Wi-Fi connectivity stands out among the list of the various features it boasts of. With this connectivity, it is possible for you to obtain alerts of the various issues that transpire alongside its operations. Examples are water leak detections which may lead to greater losses.

  • Hybrid Heat Pump Design

Coming in next is the hybrid heat pump. This one derives its power from either gas or electricity. As such, it is highly effective and convenient to leverage. On account of this, you yet again get to be able to take it to the remote areas and locales without any undue hindrances.

  • High Energy Savings

All factors considered the heater saves a great deal of energy on your part. Many past users have noted that it has the ability to cut down the energy costs and use by a whopping $4,500 over a 10-year period. You definitely want to prioritize it for your room for the sake of bringing in better outcomes.


Smarter and quieter than your ordinary appliance
Very efficient unlike any other gadget
Made by a brand that is highly reputable
Draws its power from varied sources
Guarantees round-the-clock applicability


Costs a lot more to maintain and operate
May clutter your room
Demands too much attention and effort from you


Our best smart water heater reviews come to an abrupt end there. We now trust that you have the head start you need to make an informed decision thereafter. What else could you possibly ask of us? We also ask that you spread the news as far wide as you possibly can!

To be able to lay your hands on the most suitable water heater, there are some issues you have to take care of. We devote the entire scope of this article to those very issues. By reading through the explanations that follow, you shall get to make the most informed decision possible.

Buying Guides on the Best Smart Water Heater

  smart water heater

Price and Warranty

Your first foremost concern should be about price and warranty. Acquiring the most suitable smart heaters ought not to be a life and death affair. All you have to do is assess your own financial resource endowment and then go ahead to narrow down to an appropriate choice.

Anti-scale Devices

With continued and prolonged use, the plumbing mechanisms of the water heaters do sustain the deposits of lime. These not only hasten the corrosion of those parts but also impede the flow of water. As a matter of necessity, the heaters you choose have to possess anti-scaling devices to eliminate them.

Drain Valves

Drain valves exist to eliminate the residues that remain behind after the water has been discharged from the tanks. A good heater of necessity has to possess a strong and resilient valve. Preferably, such a valve has to bear the brass or any other firm metallic structural makeup for long-term reliability.


As a matter of necessity, the interior of the heater has to bear a lining that is to reduce corrosion. Of all the lining that exist for your leverage, the lining has to be preferably made of glass. You definitely want a heater that lasts longer.


These heaters are packed with and make use of loads of controls features to operationalize. Nonetheless, the controls vary in complexity differs from heater to heater and device to device. It is in your best interest to find that heater whose controls are easily graspable by you.

Display Units

To aid you with controls and monitoring of the progress of heating, these heaters come with numerous display units. They collectively showcase the collector temperatures, tank levels, pressure readings, and other vital parameters. Together, these readings let you engage the apparatus conveniently.

Water Handling Capacity

How much water is the heater able to handle per unit time? This consideration is necessary as it determines the amount of hot water you may receive at any given time. It is further determined by the amount of water your household may need at any given time.

Fuel Source

Lastly, the source of heat that the heater relies on also comes in handy. A good heater has to derive its heating power from a source that is convenient and affordable for you. As you hunt for a good heater, be sure to settle on that one which you may easily sustain in the long run.

What Is a Smart Water Heater And How Does It Work?

A smart water heater is an electronic device that plays the role of heating your water. Unlike the conventional heaters, this one is packed with loads of automated controls that negate the need for you to constantly monitor the flow and the pace of the operations of the heating task.

It mainly works by accepting input from the users. Upon receiving these inputs, the heater stores them in its memory and executes them when the time for the same comes. This heater is also operable remotely via the Wi-Fi connectivity. This is besides its energy-saving character that sees it cost less on the whole to handle.

Some smart water heaters also contain a host of diagnostic and monitoring features. These features detect any issues and handle them accordingly within the set timeframes. They jointly reduce the attention and the effort you need to do the job.

smart heater

Functions of Smart Water Heaters

A typically water heater performs the following roles:


They primarily heat the water that is channeled to them. This they do by channeling the heat from the source through to the water. The exact operational mechanisms largely vary from one appliance to another. Regardless of their operational mechanisms, these heaters achieve more or less similar outcomes.


Some heaters go beyond merely heating the water. They also store the water for a limited duration of time before the same is utilized later on. The exact capacity nonetheless varies significantly from one heater to another heater. If you want to store your water, be mindful of these variations as well.


Of course, after heating the water, the apparatus has to dispense the same. To do this, it makes use of some dispensing mechanisms that yet again vary from one appliance to another appliance. It is hence a good thing to consider the dispensing mechanisms as you search for the most suitable one.

Automated Timing

As we have already explained, these heaters are able to automate the various operations. This simply means they accept prompts, commands, and inputs of various kinds. Then, they execute the same at a later time or date when the same mature. It is this trait that spares you from the need to stay attentive all the while.

How Many Smart Water Heaters Do You Need?

There is no straight answer to this question. Instead, there are several parameters that inform the number of smart heaters that may be needful at any given time. We explain them here below:

Home Size

The size of your home definitely is the key determinant of the number of heaters that may be necessary. A larger home requires more heaters than a standard small home. The underlying reason here is that you need many heaters to satisfy the needs of each room.

Family Size

Closely related to the above is the size of the family. A larger family definitely requires more heaters than its smaller counterpart. Satisfying the needs of a large family requires many heaters, all factors considered, than doing the same for a smaller family. You should hence determine how many people you want to serve first and foremost.

Desired Frequency of Use

How often overall, do you plan to make use of the water heaters? If you want heaters to use repeatedly, you have to acquire more for the sake of ensuring continuity. Only one or two may, however, do if the need for use is one time or less often.

Intended Longevity

How long would you wish to make use of the water heater? If you want to use yours for too long a duration of time, you have to settle on many. This is to see to it that if one breaks down another one may be easily deployed in its stead as soon as possible.

Prevailing Weather Patterns

Heaters are used to up the temperatures of water. Environments that are cooler impose the need to use them repeatedly and for a prolonged duration of time. This means such heaters tend to wear out a bit too soon. The opposite is of course applicable. Arm yourself with many heaters if yours is chilly and unforgiving weather.

Benefits of Using a Smart Water Heater?

Easier to Regulate

The smart heaters are easier to regulate than their conventional counterparts. That is because it is largely automated, unlike the conventional ones that operate freely. Thanks to these regulations, they keep you in charge of the water and power bills.


They are also friendly to your environment chiefly because of their use of limited power. They have built-in mechanisms that detect the heat and ambient temperatures. Upon detecting these metrics, they turn on and off automatically to cut on power consumption.

Minimize your Effort and Attention

Given the fact that they contain numerous automated controls, these heaters negate the need to pay too much attention and effort to operationalize. Instead, they memorize the prompts and execute them independently of your effort and attention. Thus, it makes your use awesome and hassle-free.

Truly Safe

The combination of the smart technologies that the heaters comprise adds up to the utmost safety. They, for instance, warn you of impending danger, leakages, and wayward power consumption, among others. Thus, it is unlikely that you will put yourself in line of danger with them.

Saves Time

Yet again when compared to the conventional water heaters, these ones cut down the time taken to heat a unit amount of water considerably. Put differently: you won’t have to wait for too long to be able to enjoy the attendant benefits. Instead, you get what you want when you want it.


With the guidance we have given out, it is our hope that you now have the armory necessary to arrive at the most suitable heater for your use. Having done that, we now pass the buck to you to go ahead and leverage the insight you have received for the attainment of that very end.

Top 3 Best Smart Water Heaters


Will Montgomery

Will Montgomery: Electro-Mechanical Engineer, Serial Entrepreneur, and Real Estate Enthusiast. Met David at Penn State, where he earned a BS in Electro-Mechanical Engineering and a minor in Business. Expertly manages capital equipment manufacturing, refurbishing, and repair businesses, while exploring opportunities in real estate and advocating for practical heating solutions.

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