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ECO 11

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ECO 11 Tankless Electric Water Heater 13 kW 240 V

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  • Share the warmth with endless hot water at point-of-use
  • Water heater requires 1 x 60 AMP double pole breaker
  • Same-day installation available. Call 1-855-400-2552
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Product Details

EcoSmart ECO 11 is a 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications. It can provide between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature. To select the best solution for your hot water needs, please refer to the sizing guide. With EcoSmart you will be happier knowing the warm water you expect is available endlessly, consistently, and on-demand, allowing you to reduce your water and energy waste. Now that feels warm all over! EcoSmart - Sharing the Warmth.
  • Endless hot water with consistent temperature
  • Save Space - Compact size saves valuable storage space
  • Save Energy - Patented self-modulating technology adjusts energy based on hot water needs
  • Save Time - No venting, unit can be installed directly at the point-of-use
  • Save Money - Save up to 50% on water heating bills according to the Department of Energy
  • Digital thermostatic temperature control in 1-degree increments
  • Temperature range of 80-140°F (add in C)
  • Durable stainless steel heating elements, Limited lifetime warranty
  • Before purchase and installation, please verify that you have the proper electrical requirements for your chosen heater
  • ETL Listed to UL-499 and CAN/CSA-C22.2 No. 64
  • Other models available
  • Check out our buying guide on water heaters
  • What tankless water heater is right for you?
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  • California residents



Questions & Answers

Q:Can I install this unit on the roof, exposed to the elements in a tropical environment?
by|Mar 10, 2023
1 Answer
Answer This Question

A:  Will, thank you for your recent inquiry with The Home Depot. This is an indoor water heater. Please check out the below link for electric tankless water heaters designed for use outside. We appreciate your business and look forward to serving you in the future. https://www.homedepot.com/b/Plumbing-Water-Heaters-Tankless-Water-Heaters-Tankless-Electric-Water-Heaters/Outdoor/N-5yc1vZc1tyZ1z17lkr/Ntk-elasticplus/Ntt-outdoor%2Bwater%2Bheater?NCNI-5&sortby=bestmatch&sortorder=none

by|Mar 13, 2023
    Q:would this unit be enough to use on a kitchen, and a washing machine?
    by|Mar 7, 2023
    1 Answer
    Answer This Question

    A:  I would say that it work great for a one person cabin with kitchen and bath but no washer. I would say if you don't use them at the same time.

    by|Mar 8, 2023
      Q:specs show 57 amps, wrong. actually just over 33 amps
      by|Mar 4, 2023
      0 Answer
      Answer This Question
      Q:I am looking for a point of use inline booster to help with wait times for HW from my basement to my second floor. What is the highest incoming water temp allowed? Will this shut off and pass through if the inlet is as high as the target temperature?
      by|Mar 3, 2023
      0 Answer
      Answer This Question
      Showing 1-4 of 773

      Customer Reviews

      4.2 out of 5
      • 4.2
        out of 1,700 reviews
      • 76%recommend this product
      Filter by:
      Showing 1-10 of 1,700 reviews
      It blew up in three years
      The Eco Smart company was no help. The unit was not in use at the time of the explosion. If I had not been home at the time the entire house would have flooded. They suggested I buy a new one after telling me it was not repairable. I followed the recommended maintenance schedule in the manual. I let them know that I would never be buying another Eco Smart product ever. $500. plus dollars for a water heater that lasted three years. No thanks! I will buy from a different company.
        1 found this review helpful
        May I suggest another brand?
        FOR ANYONE CONSIDERING THIS BRAND...I purchased my house 2 years ago, this is what we had installed. Two days ago, I found the unit leaking by the inlet temperature sensor was located so I contacted the manufacturer. I was told that I should have been doing yearly maintenance on the heating elements which includes removing them and soaking them in vinegar. This is not in the manual, which simply states to inspect the inlet and outlet values yearly.
          5 found this review helpful
          I have been using it for about 3 weeks now...
          I have been using it for about 3 weeks now as a heat source for my garage radiant floor heat. Its a 700sqft garage with about 700ft of 1/2 pex in the slab. I keep the garage at 55 when im not in there and kick it up a couple degrees when needed. I have doubts on how long it will last but we will wait and see. It does use a lot more power than expected. I can hear a couple light fixtures buzzing when the heater is on but it is drawing a ton of amps so that is to be expected.
          • Verified Purchase
          1 found this review helpful
          Happy Customer
          EcoSmart 27 was easy to install and works well. I had an 80 gallon tank that failed. The water temp is great and reaches the far end of the house at temperature in less than 45 seconds which is about the same as the old tank system.
          • Verified Purchase
          • Recommended
          3 found this review helpful
          Good Product
          the o ly problem is my tub has 1/2 pipe and heater errors out. I fixed this by throttling input to heater. used pec pipe. easy install. lots of continuous hot water w/o constant temperature adjustment. Electric was 3 40 Amp double pole breakers using 8 awg wire. works great
            • Recommended
            1 found this review helpful
            EcoSmart makes a good tankless water heater. The EcoSmart 18...
            EcoSmart makes a good tankless water heater. The EcoSmart 18 supplies my 1400 square foot home with plenty of hot water. I also purchased a small EcoSmart 8 which my Westinghouse 9500 watt generator will accommodate in case of a electrical outage. With it I can take hot showers and have hot water for washing dishes in case I need it. I purchased the two tankless water heater’s and the Westinghouse generator from Home Depot. I am very pleased with their service and products.
              2 found this review helpful
              This is my first time with an on demand type water heater. It seems to work good so far. It is w...
              This is my first time with an on demand type water heater. It seems to work good so far. It is well made and compact. Wasn't hard to install using a Watts installation kit. The one big problem I had was with leaks at the inlet nipples? Took me many times to get it to stop leaking! Instructions say not to use Teflon tape or pipe dope, it leaked at both connections. I tried tape, they leaked. I tried pipe dope, they leaked. I tried special pipe dope with gasket product (Block), both connections still leaked! I left the dope on and added 4 layers of yellow Teflon tape (thickest tape) and cranked down again, Finally no seepage, YEAH! Still holding. My solution would to have longer nipples on the water heater? I notice when I took connections apart there was only about 3/8" of threads being used in female coupling that attaches to the heaters male connection, with fittings tightened to the fullest??
              • Verified Purchase
              • Recommended
              7 found this review helpful
              Installed this as a alternative hot water system during the Summer months in combination with pre...
              Installed this as a alternative hot water system during the Summer months in combination with preheated solar water system. Works perfectly as designed. Installed 5/1/2021. Goal was to eliminate the oil burner operation/dependency during the Summer months. It is installed after the preheated solar water. Very easy to install, very easy operation, but I'm a pro. My tip...make sure to install a way to "descale" it if you have hard water/water softener system. When incoming water temps are "hot" unit uses very little electric. On a good day water temp got to 115 deg, with unit set to 110 deg it uses NO electric.
              • Verified Purchase
              • Recommended
              6 found this review helpful
              Great tankless electric water heater and the best customer service!
              I bought this unit three years ago and it worked great until recently it sprung a leak. So I called customer service and they were amazing! Within an hour I had a new unit on its way via FedEx to my home! Two days later the new unit arrived. The warranty on this is the real deal and that’s what’s very important with these type of wireless tanks. I know they do they do not last as long as your standard hot water tank but that’s the trade-off. You get fast unlimited hot water but it won’t last 20 years. But with this warranty and this great customer service this is the perfect product! Very happy with this purchase and dealing with this company.
                • Recommended
                10 found this review helpful
                Leaks at the element tank.
                Careful, mine started leaking and instead of repairing it they say "Oh , you have to disassemble the unit, pull out the elements and soak them in vinegar and replace the o-rings - annually"! And by the way, the manual that comes with it fails to mention that. So go pay a plumber to do all this for you.. They do not stand behind their product.
                  33 found this review helpful
                  Showing 1-10 of 1,700 reviews

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                  Required Volt Connection240 volt240 volt240 volt240 volt
                  Application TypeResidentialResidentialResidentialResidential
                  Wattage (watts)13000 W7200 W18000 W18000 W
                  Water Heater FeaturesWall MountedWall MountedWall MountedWall Mounted
                  Efficiency LevelSuper HighSuper High
                  Fuel TypeElectricElectricElectricElectric
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