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EcoSmart Eco 27 Electric Tankless Water Heater Review

EcoSmart ECO 27

Our Rating
  • Energy Efficient
  • Compact
  • Perfect for Cold Climates
  • Endless hot water
  • Save money

6 Main Features of the EcoSmart ECO 27

1. No Heat Loss

When we think about water heaters, we usually think about large, bulk heaters. These work by storing large amounts of water and heating it up gradually.

To do this, water heaters employ big heating units, using electric power. They are well-insulated, so that once the water is hot, it stays that way.

However, no matter how well-insulated these tanks are, there is always heat loss. That is because a lot of time can pass between heating the water and actually using the hot water.

This means that you don’t really get what you paid for in terms of the electricity spent on the heating process. With the EcoSmart ECO 27, this problem is eliminated.

2. Savings on Electricty

That means that people who have tankless water heaters can expect to make big savings on electricity bills.

Depending on the type of heater you decide on, the savings can range from minimal to substantial.

However, the EcoSmart ECO 27 tankless water heater ends up producing fewer greenhouse gases than bulk heaters, which makes it good for the environment.

There is another factor that contributes to the efficiency the ECO 27. It only needs enough energy to heat up the water you need at the moment. That is why these are also called ‘on-demand’ water heaters, since they only work when you tell them to.

This leads to massive savings when coupled with the point from the previous paragraphs. We have other great choices here too.

3. Lasts Longer

ecosmart electric tankless water heater reviews

Another key benefit is that the ECO 27 will last you last much longer than any bulk heater. In fact, experts estimate that the ECO 27 can last up to 10 years longer than bulk heaters.

That is because it is much easier for a bulk heater to corrode over time.

Tankless heaters are easier to maintain, so there is less reason to worry about corrosion, or plaque build up.

4. Saves Space

Though it may be obvious that tankless heaters, such as the ECO 27, are less bulky than bulk heaters, it is still an important point. In fact, you can install them under cabinets, or in closets, so they are out of your way.

You can also check out our reviews on the best natural gas tankless water heater if you are not a fan of the electric type.

5. Safety Concerns

There is also the fact that tankless water heaters are safer than bulk heaters. That is because they cannot rupture, leading to flooding, unlike bulk heaters.

There is less corrosion, and so, less chance of leaking. Furthermore, if a pipe connected to ECO 27 breaks, you can just shut it off using the first valve.

A serious malfunction of a bulk heater would send all the accumulated water out at once, resulting in a flood.

6. Limitless of Hot Water

Finally, the most important consideration is that with tankless water heaters, you can never run out of hot water.

Since it is heated as it passes through the unit, as long as you have water, you will have hot water.

That means no more nasty surprises when you get in the shower and get splashed with cold water.

What Sets The EcoSmart ECO 27 Apart From Its Competitors?

There are definite benefits the EcoSmart ECO 27 has over its competitors. In this section, we will take a look at some of its key specs, and end with a short list of pros and cons.

The manufacturer claims that this unit can reduce your water heating costs by as much as 50%. Those are substantial savings, but when coupled with the ecologically-designed properties of this unit, it paints an even better picture.

Another benefit for the user is that they can save up to 12 cubic meters of space by using this heater, according to the manufacturer. 

Depending on where your water heater is located, that can result in a lot more usable room in your home for other things.

It has a temperature range of 80 to 140°F. Depending on the overall climate you live in, and the quality of the water pipes, this unit can provide hot water for several different taps.

If the cold water in your pipes is at or around 37°F, the heater can power two sinks and two showers at once. If it is warmer, the unit will likely be able to handle more.

This electric tankless water heater requires 27 kW of electricity, and 240 volts. These are serious numbers, so don’t attempt to install this yourself without consulting an electrician.  It also calls for a certain amount of breakers, for safety reasons.

How Does This Tankless Water Heater Work?

If they don’t store water in order to heat it up, how does the ECO 27 actually work? The answer is pretty simple. These heaters are installed on the water pipes themselves. That means that they can heat the water up as it is passing through the heater.

They do this by using a heat exchange unit. These units heat up to very high temperatures using electric induction. Simply put, it pumps electricity through materials with high resistance, which leads to heat accumulation.

That allows these heaters to transfer as much heat as possible to the water as it flows through. The heating process starts when the user turns the water on. There is no heat accumulation beforehand at all.

That is why the savings on electricity can be so great. As previously mentioned, this means that you will always have hot water in your house.

The Pros And Cons 


  • Compact: This unit is way more compact than a bulk heater. However, it is also efficiently designed when compared to other similar heaters. It can save you as much as 12 cubic meters of space, according to the manufacturer.
  • Powerful: This water heater can handle a lot of water coming through it at once. It can operate four different water sources at a time, if the water is very cold. The manufacturer offers a water temperature map for the USA, so you know what to expect in advance.
  • Digital thermometer: A digital thermometer is responsible for controlling this unit. Furthermore, this unit comes with a dial that can set the temperature to within 1°F precision. These two parameters combined ensure that you get the maximum control over your water temperature.


  • Energy-intensive: While this unit produces excellent results, we cannot ignore the fact that it is energy-intensive. However, since it only seldom uses this energy, it still produces big savings in the long run.

Final Verdict

EcoSmart ECO-27 Review 

Our Rating

Our final verdict on the EcoSmart ECO 27, it is definitely worth your while to get this tankless water heater. The savings are huge, both in terms of energy, and in terms of space. 

We would only give it 4.5/5 stars, since it requires a lot of fiddly electronics work, but is otherwise an amazing product. 

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    Verner Ellen

    Hi, my name is Verner Ellen. I am a homebody whose interest is in getting the best home tools and equipments to help with the the everyday house chores. I also love fitness, cooking and grilling. Maintaining a clean and comfortable home is my lifelong passion.