Ecosmart Self modulating Eco 27 Tankless Water Heater Review

Buyers Guide, Tankless Water Heater

EcoSmart ECO 27 electric tankless water heater
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Ecosmart ECO 27: Well, in this post, I would be walking you through various aspects of Ecosmart ECO 27 so that you can make an informed buying decision.

Trust me, at the end of this post, you’ll have clarity about where or not you should opt for Ecosmart ECO 27 tankless water heater.

So, without further ado, let’s begin…

EcoSmart is a US-based company that was founded in 2008.

The company’s mission is to produce and distribute quality green energy products that aren’t only efficient but also economical for consumers.

Unlike the other established players in the tankless water heater domain, the EcoSmart ECO 27 is a young and dynamic company that is gaining popularity because of the “affordable prices”, customer service, and overall quality.

Moreover, the company specializes in water heater products including pool and spa heaters.

In fact, the brand has a wide range of product lines in order to meet every household demand.

Some of our clients have reached out to EcoSmart time and again regarding some queries, and you know what, they got responses in an epigrammatic span of time.

So, I can say that the company has great customer service support.

EcoSmart ECO 27 Electric Tankless Water Heater Review

Well, to begin with, the Ecosmart eco 27 tankless heater is capable enough to meet your family’s day-to-day hot water requirement effortlessly.

Moreover, the unit is not only small, compact, and sleeked designed but also, highly energy efficient.

And, the best part is, the Ecosmart ECO 27 comes with a lifetime warranty which is definitely something to boast about, isn’t it?

The electric tankless water heater could be a perfect fit for small to mid-sized apartments and homes.

The 27 kW tankless water heater is designed to supply endless hot water to one or two-bedroom homes with ease.

Moreover, the portable electric tankless unit will not occupy much of the space, and could even be installed in non-traditional places as well.

On top of it, the tankless unit is equipped with innovative and advanced technology including self-modulation to help end-users with a superlative experience, indeed.

ECO 24 vs. ECO 27 vs. ECO 36: Comparison Table

 Features ECO 24 ECO 27 ECO 36
 kW 24 27 36
 Max Amperage 100 112.5 150
 Required Breaker 3 x 40 AMP 3 x 40 AMP 4 x 40 AMP
 Wire Gauge 3 x 8 AWG 3 x 8 AWG 4 x 8 AWG
 Size17″ x 17″ x 3.75″17″ x 17″ x3.75″17″ x 21″ x 3.75″ 
 Weight 13.75 lbs 13.75 lbs 17.4 lbs
 Water Connections 3/4″ NPT 3/4″ NPT 3/4″ NPT
 Temp. Range 80°F – 140°F Yes Yes Yes
 Check on Amazon $$$$ $$$$ $$$$
Why Should I Buy EcoSmart ECO 27?
  • EcoSmart ECO 27 is a powerful electric tankless water heater
  • It provides endless hot water
  • Moreover, it is comparatively safer to use
  • In the warmer climate, it is capable of providing endless hot water to four showers and a sink
  • In order to ensure a longer lifespan, almost all the components are produced from either stainless steel or copper
  • And, the best part is, the EcoSmart ECO 27 provides a lifetime warranty on its parts
  • It has a 99.8% energy efficiency rating
  • Not only that, the digital temperature control helps you in getting better control over the device including temperature increment at 1-degree
  • The ECO 27 can heat 3 gallons per minute
  • As compared to a conventional water heater, it can save you up to 50% on electricity bills
  • Lastly, it comprises of most innovative and advanced self-modulating technology in order to help you achieve the optimum result with ease

EcoSmart ECO 27: What You Don’t Know?

The ECO 27 tankless water heater is a highly portable unit as it weighs 13.75 lbs and measures 18 x 17 x 3.75 inches.

The ECO 27 comprises copper and stainless steel which makes it durable, robust, and long-lasting.

In fact, it will last almost twice as compared to a conventional water heater.

Unlike the conventional heaters when in most of the leakage cases, you don’t have an option but to replace the entire unit, the ECO 27 comes with replacement parts.

In simple words, you need to change the parts that are malfunctioning or whatever rather than replacing the entire unit.

To deal with unprecedented situations including overheating and overloading, the unit is equipped with thermal auto-protection.

Not only does it requires a 240-volt electrical system but also comprises three 9-kilowatt elements and an amperage draw of 112.5.

Whether you’re a newbie or an experienced professional, you need to pay proper attention to the installation process.

In fact, I would request you to take the help of a certified electrician in case of doubts or hesitations.

As a part of the installation process, you would be needing 0.75-inch NPT pipe fittings.

To avail lifetime warranty on the water heater’s electronics, exchanger, and elements, the unit should be installed by a professional.

Just for your information, the cost of labor isn’t covered, only you can claim for the heater.

EcoSmart ECO 27: Energy efficiency

It goes without saying that the ECO 27 is highly energy-efficient, and can save you up to 50 percent on energy-saving costs according to the Department of Energy.

The unit comes with a precision output and the credit goes to the built-in digital control panel that allows you to adjust the output water temperature with a 1-degree increment.

And, the best part is, you can run up to a couple of showers, and a sink simultaneously.

In fact, you can expect the unit to provide you with a flow rate of up to 6.5 GPM.

But, at the same time, you also need to understand that the flow rate and energy to a large extent depend upon external factors such as climatic conditions.

The temperature at which the groundwater will enter the heater will dictate the flow rate as well as energy efficiency.

In layman’s language, the warmer the water at the inlet the more efficient the model and the higher the flow rate would be.

So, if you’re using the ECO 27 in extremely cold conditions, then it wouldn’t be as energy efficient as it would’ve been when used in a warmer climate.

The EcoSmart 27 boasts about being 99.8 energy efficient.

However, the unit isn’t energy star certified which is definitely something the brand can improve moving forward for sure.

As per my knowledge and experience, the self-modulating feature of the ECO 27 would definitely grab your eyeballs and is worth the praise.

What it does is, adjusts the amount of energy that it draws depending upon the set output temperature as well as the quantity of water that you’re using.

So, with the help of this advanced technology wastage of energy can be stopped by ensuring the temperature of the hot water meets your requirement.

EcoSmart ECO 27: Specification

  • 27 kW output
  • 112.5 maximum amperage
  • 3 x 40 AMP required breaker
  • 3 x 8 AWG wire gauge
  • 13.75 lbs weight
  • 3/4″ NPT water connections
  • 80°F – 140°F operating temperature range

EcoSmart ECO 27: Features

The Ecosmart ECO 27 provides you with an endless supply of hot water, but at the same time, you also need to keep in mind that the unit you’ve bought is sized correctly.

Since it doesn’t comprise any tank so standby loss to the environment is almost negligible.

Unlike the tank-based heaters, where the hot water is stored for use, the EcoSmart ECO 27 uses a heating element to heat the water as it passes through the unit.

The company claims to save up to 90 percent of space as compared to the tank-styled traditional water heaters.

Frankly speaking, since the ECO 27 can be wall-mounted so you can easily free the floor space.

It is equipped with advanced technology such as self-modulating that uses only the amount of energy that is needed for heating the water when you need it.

You don’t have to wait long for getting the hot water, and this was made possible because of the point-of-use installation and on-demand heating cuts down.

ECO 27: Benefits

Let’s have a quick look at some of the benefits that might help you in making an informed buying decision.

Easy to Install

Since the ECO 27 is an electric tankless water heater, so it is much easier to install it as compared to a natural gas tank-styled water heater.

I know many of you would be inquisitive to know, why is it so, right?

In simple words, a lack of venting makes things effortless.

A gas-powered heater needs a venting system for installation along with a fitting gas line size, and a fresh air supply.

On the other hand, all that ECO 27 demands from you are ample storage space and a stable electricity supply.

However, if you’ll give through the user manual, you’ll find that the warranty becomes void if the damage is caused during the installation process because of users’ negligence.

So, my suggestion would be to hire a professional if you’re not confident about expediting the installation process on your own.

It’s always good to be safe than sorry, isn’t it?

Requires Low Maintenance

Once you’ll go through the manual instructions, you’ll realize that the effort required from your end for maintaining EcoSmart ECO 27 is minimal.

You might be wondering, why is it so, right?

Unlike the cheap tankless models, the EcoSmart ECO 27 uses steel and copper components that are meant to last longer.

Not only do they enhance the conductivity but also provide better resistance to rust.

By doing so, the pipes inside the water heater are made more secure, and the adverse impact of dust, debris, or any unwanted material which comes along with the freshwater is minimal.

Not only do the parts enjoy a lifetime warranty but also are easily replaceable.

As said earlier also, if any component goes rogue, all you need to do is to replace it and not the entire unit.

Decent Flow Rate

The brand EcoSmart has produced around 6 models to date that can cater to both residential and commercial needs.

They include ECO 8, ECO 11, ECO 18, ECO 24, ECO 27, and ECO 36, and the number after the word “ECO” depicts the kW that they draw.

The ECO 27 has the highest flow rate after ECO 36 which is definitely a superior/upgraded version.

In fact, the ECO 27 is capable of providing up to 6 GPM in the warmer climate which simply means that the unit can supply endless hot water to up to 4 showers and one sink simultaneously.

So, if you’re an owner of a small or mid-sized apartment, then ECO 27 would be sufficient for your hot water requirement.

However, things could drastically change if you’re using the unit in cold climatic conditions as low as 37 degrees Fahrenheit, that is, the water flow rate drastically reduces to 3 GPM which simply means that the unit can’t provide hot water to more than 2 showers at one time.

In layman’s language, whether you’re living in a warmer climate or the colder one, the EcoSmart ECO 27 definitely has something to offer you.

Self-Modulating Technology

It’s not only about EcoSmart ECO 27 but any tankless water heater is meant to draw less energy as compared to its traditional counterparts.

I’m not at all saying to believe my words or the views that I’ve penned down, rather do your research and you’ll find that EcoSmart Eco 27 is one of the best selling tankless water heaters and worth the investment for sure.

But, at the same time, do consider sizing appropriately in order to achieve an optimum result.

Cutting long-story-short, the unit is equipped with self-modulating technology that puts the ECO 27 in different leagues altogether.

Modulating technology plays a crucial role in making a balance between your hot water requirement and outside temperature.

Let’s understand the working and benefits of EcoSmart ECO 27 modulating technology with the help of an example.

Suppose there has been a sudden surge in the temperature and your hot water requirement decreases drastically, so in such a scenario, the self-modulating technology would put the heater on a hibernating mode.

As a result, the heater would be drawing relatively less energy and thus your energy bills would be reduced drastically.

On the other hand, in the cold climatic conditions wherein your hot water requirement is quite high and the temperature outside is nothing less than freezing, then the self-modulating technology would make sure that the heater doesn’t use excessive energy for its heating requirements.

On top of it, even when the ECO 27 would be working at its peak performance, it won’t be using as much energy as a conventional water heater.

Safe to Use

The EcoSmart ECO 27 isn’t meant for outdoor use as it does NOT splash and is water-resistant.

However, you can install the unit indoor without any hassle.

In case, you’re a first-time buyer and NOT sure of expediting the installation process on your own, then do contact a professional.

It comprises of safety features and is definitely safe to use for both youngsters as well as elders.

Digital Temperature Control

As discussed earlier also, the EcoSmart ECO 27 Electric Tankless water heater comes with a digital temperature control panel that will help you with temperature controls resulting in better accuracy.

In fact, you’ll have better control over the device as it allows the temperature to change with a one-degree increment.

EcoSmart ECO 27 Electric Tankless Water Heater: Pros and Cons

Let’s have a quick look at the pros and cons of EcoSmart ECO 27.


  • 99% efficiency
  • Comparatively easy installation process
  • The compact and sleek design will save you space
  • Non-stop endless hot water supply
  • Lifetime warranty on heater parts
  • Point-of-use installation and on-demand heating cuts down on waiting for hot water


  • No labor warranty
  • Hot water dribbles sometimes


In this section, I would be responding to the queries related to the ECO 27 tankless water heater.

In case, you also have got any queries or doubts then feel free to mail us, we would be more than happy to assist you.

Does it make sense?

Is the installation process easy?

Definitely, the ECO 27 is easier to install as compared to a traditional water heater.

Whether you’re a newbie or a seasoned professional, you can easily expedite the installation process on your own or under the guidance of an expert with the help of a plumbing manual provided by EcoSmart for installation.

What does the warranty cover?

Well, the ECO 27 comes with a lifetime warranty on electronics, exchangers, and elements.

Note: Warranty only covers the cost of the heater. It doesn’t cover labor or any accidental damages

Does Ecosmart 27 work for a washing machine and shower at a time?

Frankly speaking, it depends, indeed!

In a warmer climate, the EcoSmart 27 can provide hot water to both a washing machine and a shower simultaneously.

However, as the temperature will drop, the flow rate will decrease, and in extremely cold climatic conditions, the flow rate can reduce to as low as 3 GPM, and in such a scenario, it mightn’t be possible for the unit to work for a washing machine and shower at the same time.

EcoSmart ECO 27 Installation Process

Please find below attached self-explanatory video for your perusal.

EcoSmart ECO 27 Installation Manual

Well, in case, you’re looking for the EcoSmart ECO 27 installation manual, then you can download it HERE.

Whether you’re a first-time buyer or a seasoned professional, the EcoSmart ECO 27 would be of great help to you.

Wrapping Up the EcoSmart ECO 27 Tankless Water Heater Review

First and foremost, I would like to thank you for being with us till the end.

Secondly, I would like to bring to your notice that I along with my core team members have put loads and loads of effort into coming up with this idiosyncratic superlative comprehensive guide on ECO 27.

So, in case, you liked our effort, and want to appreciate us, then please do share this piece of information with the ones who are in need of it.

After all, sharing is caring, isn’t it?

Cutting long-story-short, the EcoSmart ECO 27 is one of the best electric tankless water heaters available on the market.

In fact, it comprises almost all the essential parameters that you might be looking for in your tankless heater.

Not only does the unit comes with a lifetime warranty on heater parts but also, is a cost-effective solution to your hot water demands.

It’s a solid performer and has got a good reputation among the end-users.

Last but not least, the ECO 27 is a great solution to your daily hot water requirements and can support up to 4 showers at one time in a warmer climate.

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