A massive number of people are shifting towards cost-effective and eco-friendly water heaters that save your wallet and the environment from the menace of natural gas tank water heaters. One such unit is the EcoSmart Eco 18 tankless water heater.  Although the device might seem lackluster at first, given that it lacks the bells and whistles of other water heaters, Eco 18 does well for most families in small to middle-sized homes and apartments. You can enjoy an instant run of hot water, coming at 105 degrees Fahrenheit, safely and instantly. The EcoSmart Eco 18 can give you an output of over 4.3 gallons per minute (GPM) of hot water.  This number may seem underwhelming, nonetheless, it is enough for running hot water on two showers simultaneously. So, does the EcoSmart Eco 18 suffice your hot water needs, all while reducing the electricity bills, or is it just a marketing bluff?  If you want to know the answer, then check out this detailed review.

EcoSmart Eco 18 Review – Pros and Cons

Let’s take a look at the positive and negative points of the EcoSmart Eco 18 tankless water heater.


  • Reasonable price
  • Self-modulating technology to reduce energy costs.
  • Digital Temperature Control Panel makes setting the right temperature a breeze. 
  • Comes with a lifetime warranty
  • Compact design saves an ample amount of space.


  • Not suitable for large spaces
  • Not powerful enough to be a central water heater

EcoSmart Eco 18 Review – Features

Here are the praiseworthy features of the EcoSmart Eco 18 tankless water heater.

Decent and Instant Hot Water Flow

In the previous section, we told you that the EcoSmart Eco 18 can deliver up to 4.3 gallons per minute (GPM) of hot water. Thus, it means that you can run two hot showers or an equivalent amount of hot water with this one. Considering the size of the home and the climate, this water heater should do the trick as a “point of use” water heater. It is ideal for a climate of 62 degrees Fahrenheit or above.  For its price, the amount and temperature of hot water that EcoSmart Eco 18 provides are reasonable. However, you have to make sure that it is well-suited for your climate using the “eco-chart” on their website.  Although larger units are providing better gallons per minute of hot water, for a small and medium-sized apartment, you don’t need that much volume. Moreover, a tankless water heater providing greater GPM is going to cost you more. 

Patented Self-modulating Technology

EcoSmart is known for its patented self-modulating technology. As in the other models, the EcoSmart Eco 18 comes with a new and improved technical model. Therefore, you can save up to hundreds of bucks in electricity bills. If this buzzword is baffling you, then all you need to know is that the EcoSmart Eco 18 is smart enough to know when to turn itself on and off. The tankless water heater turns on when the water flow is 0.25 gallons per minute. Then, a flow sensor regulates the amount of energy it spends to heat the water. Once the water supply is cut, the system turns itself off without wasting any energy on unused water. So, you end up with low electricity bills.   

Digital Temperature Control Panel

EcoSmart-18 Often, temperature settings on water heaters don’t give you much freedom, as usually, it is in multiples of 5 and 10. Moreover, it is on a dial for most units, which take time to set them right. The EcoSmart Eco 18 comes with a digital control panel to control the temperature.  Here’s the fun part; you can change the temperature by 1 degree. So, you can have the right temperature without having to settle for more or less. 

Whole-House Unit

Unlike other EcoSmart water heaters, which are “point of use” devices for only the bathroom, EcoSmart Eco 18 is capable of becoming a whole-house unit. Therefore, instead of putting one for each shower or sink, you can use one system for the entire house. It is the best whole-house unit that you can get in this price range. 

High Efficiency EcoSmart water heaters are celebrated for their relatively higher efficiency than most of the models out there in the market. The EcoSmart Eco 18 lives up to the hype, as well. So, with this one, you don’t have to worry about paying heft electricity bills.  The manufacturer claims that it boasts a 99.8 percent efficiency. Thus, you can expect up to a 60 percent reduction in energy-associated costs. Although the climate may come into play, for temperatures of 62 degrees and above, you can save between 50 to 60 percent in electricity bills.    

Lifetime Warranty EcoSmart is a reliable brand of tankless water heaters. So, living up to their name, the company offers a lifetime warranty for any malfunctions other than incidental damages. However, there is a tricky part associated with assurance. You can make a warranty claim if you get a licensed professional to install the water heater. We would not recommend installing it by yourself despite it being easy enough. 

Read customer reviews HERE>>

 Final Verdict 

Putting everything to perspective, the EcoSmart Eco 18 is not exactly a powerhouse, but it does the job for medium-sized homes. With this one, you’ll get 2.5 gallons per minute of hot water at 105 degrees in a jiffy. Also, digital control makes setting the right temperature a breeze.  Moreover, not only will you save a lot of bucks on the purchase, but you will also save a lot by running it, thanks to the self-modulating technology. However, you have to make sure that you make your buy according to the climate of the region. If it lies around 62 degrees, then congratulations, you’ve got yourself a bargain!

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EcoSmart Eco 18
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