The Ultimate Review of the EcoSmart ECO 11

EcoSmart ECO 11 Review

We’re all looking to find ways to save energy while also keeping the monthly bills as affordable as possible. Buying a tankless water heater can significantly help. It will supply your home with an infinite source of hot water. That might seem like a considerable proposition, but the EcoSmart ECO 11 is one of those products that can do just that. 

This article will provide the Ultimate Review of the EcoSmart ECO 11 and everything you need to know about this product. 

  • Save up to 60% on your Water Heating Cst

  • Never Run Out of Hot Water

  • 99.8% Energy Efficent

  • Lifetime Warranty 

Is This Water Heater Right for You?

Before we dive into the review, it’s essential to understand if this water heater is right for you:

Here are a few things to consider:

  • Ideal for people that live either in a small home or a designated bathroom 
  • Not a water heater for cold climates, large homes, or businesses
  • Find out if this is the right water heater for you by clicking here


What’s so Special about the EcoSmart ECO 11? 

When we think about water heaters, we usually expect them to require gas, not electricity. 

In the past few years, tankless electric water heaters have emerged as the go-to solution for customers. They are efficient, robust, and dependable.

On top of that, the significant advantage is that you don’t have any restrictions on the water volume you can process. Your only job is to make sure that you keep the incoming water flow rate consistent, and the EcoSmart ECO 11 will take care of the rest.

This helps anyone living in a city where the water flow is relatively consistent, but it can work just as well in more remote locations if you can maintain the flow. 

Another advantage of electric heaters, and more specifically the tankless ones, is that they are energy-efficient and compact. You won’t need to worry about ample space for your water heaters. You can replace that spot with your dusty golf clubs. 

Very Powerful and Easy to Use

The EcoSmart ECO 11 is a 220V, single-phase unit. It’s an 11.8 kW water heater, better than what you will usually find on the market. It has an amperage draw of 54 A, and it needs a 69A breaker and a 6 AWG wire. The pipe fittings need to be ½” CF.

A primary reason people have come to love this product is the size. It comes in at a very manageable measurement of 11.5 “H x 8 “W x 3.75” D.

Compare this to other electric water heaters or a traditional one, and you’ll find this is probably one of the most compact yet efficient heaters on the market. Based on our experience, the product can deliver anywhere from 1.3 to 3.1 gallons per minute. This varies according to the inlet water temperature. Yet it’s still more than enough for a regular household, which is certainly something to keep in mind. 

Additionally, we like that it’s not very heavy. At 6.65 lb, and is easy to install

To start the unit properly, the ECO 11 needs an activation flow of 0.3 GPM. That’s not a lot, which is why the healing process is speedy and convenient. It gets the job done very well, and there’s little to no guidance needed from your side, which is always handy.

Self-Modulating Technology

The Self-modulating technology is a feature that comes with all EcoSmart products, including the ECO 11. Self-modulating technology is crucial because it allows the unit to control the energy output. 

The idea being that it can produce hot water without requiring additional energy. The advantage you get from this feature is that the product only uses water when it needs to do so. 

Instead of storing an entire tank of water, the self-modulating technology knows the power needed to heat all the water you need. It’s undoubtedly an eco-friendly approach, and your pocketbook will thank you as well! 

Simple to Use Controls

The EcoSmart ECO 11 comes equipped with a very easy-to-use control panel and details your unit’s current status, such s water temperature. 

They also include a dial on the front that allows you to fully manage the system and ensure that it works exactly the way you expect.


What Energy Efficiency Can You Expect?

The EcoSmart ECO 11 tankless water heater can deliver 99.8% energy.

This is an excellent energy efficiency rating, one of the best on the market. Since one of the primary reasons you want to use a tankless water heater is to save energy, this product delivers all of that and so much more.

It’s dependability will continually help you save energy for years to come and will maximizes your return on investment while ensuring you always have hot water ready to go, regardless of how much you need.

With the capability of saving 60% on your energy bill, it’s an excellent idea to try the ECO 11 and find out for yourself if this meets your expectations. With that in mind, you can also change the water temperature and other factors that might help you save even more. 

The ECO 11 provides versatility and ease of use  by allows you to change temperature in 1-degree increments,  thus allowing you to maximize your energy usage while maintaining your desired temperature. 


Can You Use the EcoSmart ECO 11 If You Live In A Colder Climate?

Ideally, the EcoSmart ECO 11 is suitable for moderate to warmer climates. But what if you live in an area that has seasonally lower temperatures? Can you still use it? 

The answer is yes, but with limitations. For instance, you could use this ECO 11 for low-flow applications such as the sinks in your house. However, for large-flow applications such as showers and baths, EcoSmart recommends going with one of their other products. 

One of EcoSmart ECO11’s limitations is that it is dependent on the external temperature being no less than 67 degrees. Below that, the unit begins to reduce flow-rate and lower maximum water temperature. 

The image below provides helpful guidance on which EcoSmart product to purchase based on your location. Seek advice from a professional if you are unsure or have questions.  

EcoSmart ECO 11 Chart

Getting A Consistent Hot Water Flow

One of the core advantages of the EcoSmart ECO 11 is that it gives you a consistent hot water flow once you set it up. The flow rate is around 2.3 gallons per minute and not ideal for bigger homes, but it may suffice for a smaller home or a dedicated place in the house, such as a bathroom.  


Temperature Range 

The EcoSmart ECO 11 temperature range is quite impressive. I between 80 to 140 degrees Fahrenheit. You need to take your time and experiment with the temperatures to see what works for you. But overall, you have free reign over a variety of options.


  • The EcoSmart ECO 11 saves money by only using hot water when needed.
  • Temperature can be controlled in 1-degree increments
  • Veery light, compact product
  • It does not require a large amount of space
  • 99.8% energy efficiency
  • Heats over 2 gallons per minute
  • EcoSmart ECO 11 comes with an extraordinary self-modulating technology
  • It can only use for small to mid-sized homes
  • You must install the unit with a restrictor
  • The lifetime warranty is limited.

What Is A Tankless Electric Water Heater?

When you want to buy a water heater, it’s imperative to assess your needs and identify what works best for you and your family. 

A regular water heater will add water to its tank, heat it, and then keep it heated until needed. However, a tankless water heater brings in water in demand by heating water on demand as it continuously flows through the device while being used. 

Unlike a regular heater, the tankless unit doesn’t have a tank to store all that hot water, saving you headaches when an unexpected water heater disaster occurs.  

Installing a tankless electric water heater is generally much easier and requires little to no floor space as many of these heaters can be hung on the wall.  

While tankless electric water heaters are more expensive compared to regular water heaters, they do offer significant benefits

  • Durable. Made with higher quality material, 
  • No water is stored, thus removing corrosion and massive water leaks 
  • Depending on the size, you can use them to generate as much hot water as you need without interruption
  • Tankless water heaters can help you save up to 60% more energy than a regular heater
  • It uses less space than a traditional water heater
  • A tankless electric water heater is easier to repair 


EcoSmart ECO 11 Installation

The EcoSmart ECO 11 installation requires a 60 Amp power supply and a #6 copper gauge wire. Within the package, you have a resettable, automatic thermostat that makes it a lot easier to use this product. On top of that, the unit sets the initial temperature automatically. That means you need little to no input right from the start. 

There are several installation videos on YouTube. Below is an installation video of the ECO 11 that you can review. Keep in mind; it’s important to consult the EcoSmart documentation and not rely solely on videos as everyone’s installation spaces are different. 

If you decide to install EcoSmart ECO 11 installation yourself, you jeopardize your product warranty. Working with a professional installer is the safest approach and can prevent any problems that might arise.


Why We Love the EcoSmart Eco 11?

The EcoSmart ECO 11 is one of the more popular tankless water heaters on the market. Not only is it very convenient and easy to use, but it has a lot of other benefits. The small size is perfect for people with limited space but doesn’t sacrifice the ideal water flow. Additionally, you can easily save up to 50% or even 60% of the water heating costs with this investment.



If you live in the USA and Canada, you get a limited lifetime EcoSmart ECO 11 warranty. For anyone outside of the US, you get a 5-year warranty.  

The warranty doesn’t cover product failure caused by freezing, chlorine or chemical corrosion, limping, or sediment buildup. EcoSmart ECO 11 warranty also doesn’t cover failures caused by the user when the air is not removed correctly during/before the unit’s operation, accidental damage, improper installation, or tampering. 

As mentioned earlier, if you install the ECO 11 yourself, you do jeopardize the warranty. We highly recommend hiring a trained, certified professional to install to ensure your warranty is kept intact for these reasons. 


EcoSmart ECO 11 FAQ

There are a lot of questions about the ECO 11, likely due to its ease and functionality. Below we share some FAQ to help address those concerns:

Does it come with an installation manual?

Yes, you can download the manuals for this product here:


What should I do if the ECO 11 is not working properly?

This unit works best when it is level. You can use shims to make sure that it’s straight and aligned nicely. The ECO 11 also needs to be within 18 inches of a 20-amp circuit breaker. It also needs to have clear, unobstructed access to the floor and wall. If you have any issues with the ECO 11, contact an EcoSmart technician.


What kind of warranty does it come with?

For customers in the US and Canada, you get a limited lifetime warranty for this product. For anyone outside of these regions, you can expect 5 years warranty coverage.


Does it have a built-in shut off?

There is no standard shut off mechanism with the ECO 11. It has a flow switch that keeps track of your water usage and will automatically turn itself on and off as needed. This helps save energy and extend the life of this tankless water heater.


Does it need to be drained?

Each manufacturer has different procedures, so you’ll want to consult your ECO 11 manual for more information. Generally, most devices do not require any type of draining. If any water is left in the system during extreme temperatures or freezing, you will likely damage the device. It’s best to just refer to your manual for the best practices.


Does it work with solar power?

Yes, if your home produces enough solar energy, you will be able to benefit from this product. One of the main benefits of having a tankless water heater is that it only heats the water when you use it instead of keeping a reserve tank full at all times. This helps save you money by not having to keep energy stored in a tank when it’s not being used.


Can I mount the ECO 11 outside?

You can mount this device indoors or outdoors, but you will need an electrician to do so. Since there are no shut off valves on this product, you’ll want someone who is knowledgeable with wiring to ensure you don’t damage the unit.


How do I install the ECO 11?

This EcoSmart product is relatively simple to install. The most important part is having an electrician to ensure wires are done properly and safely. There are also some more detailed instructions on how to uninstall or change out this device if needed.


Can I use this device in my RV, boat, or trailer?

Yes, the ECO 11 is designed to work with 12-volt DC power systems. You can easily connect it to any vehicle that has a battery for operating this unit independently. This makes the ECO 11 an excellent choice for anyone looking to do some camping while bringing along their own hot water.


Does it make noise?

Since the ECO 11 is only heating water, you shouldn’t hear any noises coming from this device. You do have a flow switch that will click when the unit turns on and off, but other than that, the heating process is pretty quiet.


Do I need to remove my existing tank?

No, the ECO 11 is designed to work on its own. You will need to make sure you have an adequate power source and clear access for this device. The included installation manual has specific instructions as well as what kind of wiring you’ll need for each application.


Does it require electricity?

Yes, this EcoSmart product requires an electrical connection to work properly. Without the right wiring, you will not be able to use it effectively in your home. We recommend consulting an electrician before making any changes to your existing plumbing for this unit.


What is included with the ECO 11?

You’ll get one ECO 11 heating element when you purchase the product. It also comes with a wiring diagram and installation manual.


Does it require maintenance?

The ECO 11 is designed to be simple and easy to maintain. If you have issues, we recommend contacting EcoSmart directly for troubleshooting tips.


How do I know when it needs replacing?

If you notice any leaks or inconsistencies with your device, it may be time for a replacement. You can find tips and tricks on EcoSmart’s website for proper maintenance of this product.


Wrapping It Up

The EcoSmart ECO 11 is one of the top tankless water heaters you can find on the market. It’s a convenient and dependable tankless water heater that will provide excellent value for your money and outstanding results. 

While it can be slightly more expensive when compared to a traditional water heater, it does include will significantly reducing your energy bill paying for itself in the long run. If you want a great, efficient, and dependable tankless water heater, you can’t go wrong with the EcoSmart ECO 11!

Learn more about EcoSmart’s ECO 11 by clicking here

  • Save up to 60% on your Water Heating Cst

  • Never Run Out of Hot Water

  • 99.8% Energy Efficent

  • Lifetime Warranty 

Please note: As an Amazon Associate we earn from qualifying purchases. This will not cost you anything. 

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