EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
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Availability:
Unavailable
Size: 12 x 8 x 4
Pattern Name: Water Heater
Features
- Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.Amperage Draw : 54 A.Special Features: Energy Efficient
- Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
- Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
- EcoSmart ECO 11 Sizing; 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; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
Description
ECO 11 can be used for multiple or single applications depending on your climate. ECO 11 can provide hot water for one shower in colder climates, or two showers in warmer climates.Temperature range of 80-140°F (add in C) From the Manufacturer This Smart Technology electric tankless water heater is configured for climates where incoming water temperature is 67 Degree F and above. This model is well suited for heating up to 2-Gallon per minute, which is the equivalent of one shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 67 Degree F. Digital Temperature Control allows you to set your temperature in increments of 1 Degree. This model can also be used in colder climates as a Point of Use for a sink or other low flow application. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.
Brand: EcoSmart
Capacity: 2 gallons
Power Source: ac_dc
Product Dimensions: 8"W x 11.5"H
Special Feature: LED Display
Power Source: ac_dc
Special Features: LED Display
Wattage: 13000 watts
Voltage: 220 volts
Flow Rate: 3.1 gpm
Maximum Temperature: 140 °F
Heat Output: 11 KW
Efficiency: Energy Efficient
Mount Type: Wall
Maximum Pressure: 8 bar
Capacity: 2 gallons
Item Dimensions W x H: 8"W x 11.5"H
Item Weight: 6.5 pounds
Item Depth: 3.75 inches
Color: White
Style Name: ECO 11
Brand Name: EcoSmart
Model Number: ECO 11
Number of Items: 1
Number of Packs: 1
Unit Count: 1 Count
Manufacturer: Ecosmart
Manufacturer Warranty Description: Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.
UPC: 854920002022
Global Trade Identification Number: 22
Included Components: electric tankless water heater
Item Type Name: electric tankless water heater
Manufacturer Part Number: ECO 11
Material Type: Plastic
Frequently asked questions
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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
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To initiate a return, please visit our Returns Center.
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Top Amazon Reviews
Size: 12 x 8 x 4
Pattern Name: Water Heater
Here's my story review. I live in a mobile community, one college guy who can't buy a real house. Lived here for 25 years, one day the bathroom looks all wet on the floor, walls stained. The old waterheater sprung a leak and had to go. No floor pan was installed back in the old days so it seems *slaps head*. I shopped around for waterheaters but there were $300< starting price range. I decided to shop around and my main influence is comments (yes like this one) and youtube reviews. Found out tankless ones might save me money. Plus the initial cost was amazing I paid less than $250 for my 11kw EcoSmart unit. I use a drip/drain pan just in case it leaks somehow on the floor. I waited for this review to actually use it for 3 weeks now. I learned how to solder pipe (easy, fun, use lots of flux!!) to make some small 1/2" thread to 3/4" thread copper shortie pipes to adapt to the unit. I upgraded my circuit breaker to 60 amps dual pole (240v) from 40 amps. I was supposed to upgrade the wires to 8g but I did an infrared heat test on the current wires with hot water running and no heat problems, But I will upgrade the circuit to 8g when it's warmer out in the spring it's cold out now (winter 2011). Over all I'm super happy I bought this unit. It's perfect for one guy like me. It saved me a bundle over a regular water heater and install work (this unit was so small and so easy to install) and I'm happy to be participating in environmental/energy savings just by using this unit too. I did void the warranty by installing it myself, I'm kind of a self taught handy man, but I figure the whole unit only cost $250> so I could just buy a new one if anything goes wrong vs some novice electrican ruining stuff and I ended up paying the same amount anyway. If this brand ends up bad, i'll just switch brands. It's the darwin theory for appliances. But every review I've seen on this unit is that it is top notch quality, and when I got it I believe it also the thing is made Awesome, it has a digital dial for the temperature and it simple to install and use. I am so happy I went this route and the 11kw unit is perfect for my simple (one guy) purpose. What that really means is, one sink/shower at a time. At 120 degrees on the dial my showers are Insanely Hot and last forever. I had 3 people in here before (girlfriend and kid) and we all just respected the "showering" person by not using the water. Had to do that with our water heater before anyways. I live in the Seattle area. And MyRubberneck is a good seller too. I got my unit from UPS in about 6 days, the weekend interrupted the (3-5) delivery by a day. That's fine i'm not upset about that though. He saved me about $30 over Sears and their promise was two week delivery for online purchases (ya go check Sears). He sent it in the raw unit box, I kind of wished it had a cardboard sleeve or even a grocery bag sleeve, or bigger box for it. but the box was intact. The Benefits: endless hot water, power bill savings, no more tank pressure/old leaks etc. The Cons: my only complaint is that the warranty is nullified if you install it without a licensed electrician. Oh well. And also the documentation does not say which wire is power, neutral, or ground. The colors were Red, blue, and yellow/green. Ya I figured it out (red+, blue-, and yellow/grn=ground), but dang shouldn't documentation HAVE THAT in there? Maybe it was designed for licensed electricians only. LOL. *Also, an important factor. The water heat temp consistency directly depends on the temperature of the "ground" water coming into the unit. sometimes my shower temperatures got hot or cold (only slightly) but I'm sure it was "cold water sandwiches" but from the ground water temps, especially in winter. The unit is probably taxed to adjust to your preffered temp. Think about that in a "thermal" way. I think if you had a buffer tank or something say (a turned off small water tank 20-30gallons) that had a constant temperature before the unit heated it up then showers would be no problem. My water heater room is totally empty now sans the EcoSmart unit in there, I could put in a buffer tank easy. Or a more powerful EcoSmart unit might make this a non issue. My work around though...just turn up or down the shower dial accordingly, not that big of a deal to me. I give this thing 5 stars!! I get the feeling the big water heater, or power companies don't want people to get their hands on these types of new technologies. It was SUPER hard to find any in the stores that weren't in the thousand dollar range, this was a 1/4 that price. And this had THE BEST reviews from the internet I researched for 10 hours straight, ya I'm a nerd. When I get a real house I will probably buy the EcoSmart 27kw model. I love this unit very much. Take care. ~TZ
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Reviewed in the United States on December 17, 2011 by TripZip
Size: 12 x 8 x 4
Pattern Name: Water Heater
We purchased this water heater based on comments here and like others, we agree that it is a great water heater. We are using it as a whole-house water heater replacing a sixty gallon tank that started leaking. We expected that there would be some adjustment in going tank-less and using an 11KW as a whole-house water heater, for example like not using other faucets while showering, etc., but we were willing to make that sacrifice because we were going to be saving money on the heater, and on electricity with the bonus of doing the right thing for the environment. Well, this heater exceeded expectations by a LOT. We keep it set at 110 degrees which makes for very hot shower but not scalding and no problems using other sinks at the same time. My wife told me she took a shower while the dishwasher was running and expected it to be "cool" but to her surprise there was no problem handling the dishwasher and shower at the same time. It has been about a month since we installed the water heater in our 4 bedroom, 3.5 bath house and we have forgotten that we are heating water on demand because there is no noticeable difference compared to when we had a sixty gallon tank. One of our showers is a double shower and I tried that out, no problem the heater handled both fine with no reduction in temperature. You should be aware our house is a Florida house so our city water comes in at around 68 degrees. If you had well water you will have different results as you will be heating much colder water. One other thing to note, if you take a bath you will want to crank the heater to higher temp, it is so easy with the knob and digital readout I taught my daughter to crank it before her bath so she can add extra hot water to "freshen" up her long and hot bath otherwise 110 degrees isn't hot enough to heat up a cooled bath do to rapid heat loss. You can buy the remote control for about forty bucks and adjust the heater setting from anywhere, or just keep your heater set to a higher temp. We like running it at 110 so that we have maximum energy savings and eliminate scalding risks. I highly recommend this heater, keep in mind that you need upgraded wiring, you will probably have 220 volt electric for your existing water heater but ours was only 30 amp and this one calls for 60 amp so that means getting MUCH thicker wire that is expensive and hard to pull. If your heater can be located close to the breaker box you will save money in wire and the hassle of pulling super thick wire. I bought wiring and breaker for 50amp by mistake and didn't notice until after the installation was finished. We must have never drawn more than 50 amps because the breaker has NEVER kicked even running two showers so I plan on keeping the 50 amp breaker as the wire we used is safe for only up to 50 amps and I'd need to replace the wire to even thicker.
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Reviewed in the United States on September 2, 2012 by RBianco
Size: 12 x 8 x 4
Pattern Name: Water Heater
These tankless heaters take a 60 amp breaker. They also require number six wire which cost seven dollars per foot. You cannot use the old line that went to the water heater because the gauge is not heavy enough. It also helps if you can have a storage tank in the house that allows water to warm up to room temperature and then feed the tankless water heater. If you’re pulling cold water from the outside in the winter time in a northern climate, it will not heat water fast enough.
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Reviewed in the United States on May 5, 2026 by tom callahan
Size: 12 x 8 x 4
Pattern Name: Water Heater
My wife bought this for us as a Christmas present in November 2022 because she knew our old water heater was on it's last legs and I had been researching and liked the ECOSMART 11. I received it on Christmas day and installed it in early January. At that time I sent in the Warranty card simply because I always do. Well, on January 6th of 2024 one of the elements died. No problem, I have a warranty which also just happens to be a Limited Lifetime period (but not on the elements). So I called to get a new element...and was told very rudely that the unit was NOT registered for warranty within the 30 DAYS of purchase therefore I HAVE NO WARRANTY! Keep in mind I didn't even KNOW I had it until December 25th and therefore had NO WAY to send the card or register online for it. I explained the situation and Rheem confirmed they DID receive the warranty card but since it wasn't within 30 days of purchase Rheem would not honor it. It is NOT a standard element although readily available...ONLINE. Hardware stores carry many standard elements but NOT THIS ONE. I had to order a new pair, luckily for less than $60 but unluckily we went without hot water for a WEEK waiting to receive the part...and that was with Prime shipping! So I got it back up today and immediately ordered another element so I would have a spare pair (which ironically NOW will arrive in two days on Prime). While I was at it I ordered spare Triacs (Q6040J7's) since the elements and the Triacs are the most likely part to ever fail. I'm an electrical engineer so I know how to troubleshoot/replace those parts if necessary. And I live by the adage "If you have a spare then you never need it; if not then it will fail at the worst possible time". I don't want to go without hot water for a week without a good reason...and this wasn't a good reason since it shouldn't have failed this early. According to most estimates that I've found these units, including the elements, usually last 20+ years without problems as long as you descale them periodically (which I do and just did in November) so mine failing is a rare event so I wouldn't worry too much about that happening but I recommend you HAVE A SPARE PAIR OF ELEMENTS on hand because they aren't locally available, at least not for me. AND DON'T COUNT ON EVER GETTING ANY WARRANTY SUPPORT FROM ECOSMART (RHEEM) BECAUSE THEY ARE DESPICABLE IN MY OPINION. There wasn't any way to meet their requirements. Completely unreasonable.
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Reviewed in the United States on January 17, 2024 by Reggie
Size: 12 x 8 x 4
Pattern Name: Water Heater
Ecosmart 11 Paid $3000 to have 6awg 60amp lines run especially for this unit to be used as point-of-use in 5 locations in my house I ordered a new unit and received used. It was very obvious when opening the box that it was used. There was excessive cosmetic damage to the unit, and the seal that voids the warranty was broken. Amazon of course will return the item without argument, but I have to go through the hassle of boxing it up and dropping it off at UPS. The quality control needs to step it up. I don't appreciate being sent someone else's junk unit when I paid for a NEW item. I will post pictures. -------------------------------------------------------------------------------------- Update #1 I received a replacement unit. A new one this time. I installed it and it does not work. I called Ecosmart tech support and they had me break the warranty seal, remove the cover, and use my volt meter to check the voltages of the heating elements. Everything tested good. 244v on one side and 133-215 on the other side depending on flow rate. I was planning to use this as a point of use system for my kitchen. It only has a kitchen sink and dishwasher connected to it. With the kitchen sink all the way open there is no change in water temperature. Running at .5 gpm, which is little more than a trickle, I could tell a very minor change in temperature. I would guess that the water temperature went from about 55F to 75F. This is not sufficient for a dishwasher or common kitchen tasks of washing items. The Ecosmart tech said it should be able to take 57F to 105F at 1.5gpm flow rate. I asked him what could be wrong with the unit. He told me the unit was working as intended because all of the voltages on the heating elements were correct. I told him something had to be wrong. I asked if there could possibly be anything else. He said since I had a single handle faucet it could be mixing cold with hot. I told him that was not the case since I had just installed the faucet and tested. I have water cut-offs on all of my lines, so it was a simple matter of turning off the cold water line to the sink to rule this out as a possibility. I asked if there could be anything else, no. I told him that if the unit is working as intended I would have to return it as it is not working. I suspect I received a bad unit, and they likely send a lot of bad units. There are a lot of good reviews on these units, and a lot of bad reviews. For some people these units work great and for others they don't work at all. I think there is a serious problem with the components, assembly, or testing of the equipment. I will return this unit and not purchase any more Ecosmart products. I cannot recommend this product. -------------------------------------------------------------------------------------- Update #2 Since I still had the first unit that was sent to me, the used one, I went ahead and installed it because I was curious. Apparently the unit wasn't "working as intended" like the Ecosmart support told me. The first/used unit heated the water. The water got scalding hot if I didn't run the faucet at full blast. Running the kitchen sink at ~1gpm with the temperature set to 140F the water would get so hot it could burn you. At 140F with the faucet wide open at ~2.5gpm the water would get warm. I would guess around 90-100F. I can see why the unit was returned though. It cannot maintain temperature and it makes some strange noises. There were hissing sounds coming from the faucet and the temperature fluctuated greatly. I still cannot recommend this product. -------------------------------------------------------------------------------------- Update #3 I bought a Rheem RTE 13 to replace the crap I had been getting from Ecosmart. I received the Rheem from Amazon today and installed it. It works pretty good. The flow rate on my kitchen sink is about 2.5 to 3gpm, and the Rheem is rated for 4gpm. With the Rheem turned all the way up the water gets warm but not hot when my sink is all the way open. Only opened about halfway the water gets very hot. It is going to work great as a point-of-use system for me; which was the intended purpose anyway. It will only be supplying hot water to the kitchen sink and a dishwasher.
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Reviewed in the United States on February 26, 2014 by Cyvster
Size: 12 x 8 x 4
Pattern Name: Water Heater
I owned this product so far for a month and has been doing great. Excellent performance, consistently hot water and great energy savings. I installed it my self and I have a few tips: Make sure you use #6 electric cable, it's the recommended and safer cable width. You will need three cables and a 60 amp breaker. For the water pipes. You will NOT need any water heater hose. You only need to adapt the house water pipes to the heater with pressure fitting (which are included with the water heater) make sure that after you install all, BUT before feeding the heater with electricity, open all the house hot and cold water faucets to remove all the air inside the pipes. THEN, feed it with the electricity. After this you will be amazed by its performance. The only thing that I am concern is: how much time will this water heater will last without any problems? For me anything beyond 2 years is acceptable. Before 2 years will be very disappointing. So I will be informing you during time, to tell about it's performance. If you have read all my review, like it, so I can be more motivated to give you more updates. So far this product is definitely a MUST BUY... And if you have any doubt if this water heater will work for all your house, the answer is yes. It has more than enough heating capacity for any normal house unless you have a huge house with 3 bathrooms or more and expects 3 or more persons taking a bath or shower at the same time. FIRST UPDATE: WOW, My first electricity bill came and I save 33 dollars compared to the previous month. Nothing in my house has changed from previous billing cycle to this current cycle. At this pace the investment will pay for itself in like 6 months, that its VERY IMPRESSIVE!!! SECOND UPDATE (DEC 9, 2013) It's been 14 months since I installed this water heater and it is working beautifully and it paid for himself in energy savings alone. This product is worth every cent. I hope it last more years...
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Reviewed in the United States on September 2, 2012 by Joel Rodriguez
Size: 12 x 8 x 4
Pattern Name: Water Heater
I am updating this review because I am so pleased with the results of using this water hater. As with any change in technology, there are a couple of little quirks that take a bit of getting used to, nothing major just different from using a conventional water heater. But all and all this has been a perfect solution to counteract a growing utility bill.I have had no issues of any sort to cause concern. I wanted to wait until my first utility bill after the install, but I just couldn't do it. I need to tell somebody how well this thing works for my family. The device installed easily. But I did have an electrician friend help me with that part of it. We are three adults. There has not been a complaint about hot water since the install. And the ladies are quick to point out areas that don't cut the mustard. I have had a smaller unit installed to serve the kitchen sink for about a year, so that gives a little hotter water for dish washing and such. I have eliminated the need to balance hot with cold to get a comfortable temperature. This in itself should help the utility bill considerably. I really like the digital display and dial, it allows us to adjust the temperature effortlessly, should we feel the need. I will be doing periodic updates. But at this moment, after just a couple of weeks of use, I am very pleased with all aspects of this project. This is an update. JANUARY 29, 2015: This thing falls into the 'if I knew then' group of needlessly delayed purchases. There is a learning curve of sorts before you can fully appreciate how good this product is. The first thing that sunk in was how nice it is to decrease my water and electric bills by a total of around $75.00 a month ( I am being conservative here). There are some things that you have to consider. I have learned that if I start the hot water at a decreased volume it will get to the desired temp more quickly, particularly now that it is winter. I also take the time to set it at a comfortable temp when I am going to bath. Otherwise I leave it set pretty high. You have to remember that you are having to go through pipes that do not constantly have warmth from a conventional hot water heat, very expensive warmth. For me this is easy, because the laundry room where the heater is installed is in close proximity to the bathroom we use the most. I also chose to stop shutting the water off while lathering up. I do so when I am washing my hair, but for the body I just lower the volume some. This keeps the temp constant. Actually with these low flow shower heads there really isn't a whole lot to learn before mastering this technology. I hate to go on and on, because I don't want to chase someone away, thinking that this is some complex piece of equipment. If you have A dishwasher you should turn the sink water on for a minute before starting the washer. Actually my dishwasher suggested that with a conventional heater as well. I could take the time and explain away almost every negative review by explaining the nuances that are overcome shortly after you start using this.
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Reviewed in the United States on October 13, 2014 by Allen
Size: 12 x 8 x 4
Pattern Name: Water Heater
I decided to put in a tankless hot water heater 15 years ago. I am an Engineer and Planner, so a process began. I learned that no local contractors would install a tankless heater. They all said I would not like it. So, I was my own contractor. Through my own research I learned that Ecosmart was a leading supplier and about 20% of tankless water heaters failed in the first year (remember this was over a decade ago and the 20% number is all brands). I looked closely at Ecosmart's charts, our incoming water temperature throughout the year, flow rates for showers, flow rates for sinks, flow rates for baths, my own electrical (I am an Electrical Engineer) and felt the ECO 11 would be marginal as a whole house solution. However, the previous owner's had installed two tank hot water heaters. I decided to try the ECO 11, but keep one tank heater in case it did not work out. I bought that first ECO 11 in March of 2011 and installed it in series following the tank heater (see the photo). Note that at that time, you could only buy Ecosmart product from the company. Here is my experience: The plumber used Teflon tubing to connect the heater, it burst and was replaced with the proper plumbing (yes a licensed plumber messed it up). I had to set the tank water heater to 70F to preheat the incoming water. The flow sensor failed around 16 months, I turned up the tank thermostat and switched to it during the repair, the Ecosmart customer service was great and when they realized I was an EE, they walked me through the repair, after the repair, I switched back to a tank preheat and the ECO 11. It worked flawlessly after that repair for over 12 more years. We saved approximately $15 to $25 per month in electrical utility costs. I love long hot showers. The tank hot water heater had to have a heating element replaced in 2022. Now, December of 2024, our ECO 11 stopped working. I could no longer buy it from Ecosmart and the closest dealer did not have them in stock, but Amazon did. I ordered it from Amazon. It was $100 cheaper than it was in 2011. It took my son and I about 1 hour to replace it and the new one is working. A few changes between the 2011 and 2024 versions: The 2011 version came with a cable. We used that cable in the new unit. Not having it would make installation more difficult. I encourage Ecosmart to include that cable with the new units. There was a communication port on the 2011 not on the 2024. We never used that feature it and it will not be missed. I took a photo of the two units without the cover and included it. With a cover the two units are identical. A few notables: A great value in the payback is less than a year. Pay attention to Ecosmart's charts, they are accurate. The first installation was a long and involved process, but worth it. The replacement installation was easy. Our ECO 11 works as a whole house unit because we preheat the water with a tank water heater. If you live in a warmer climate, an ECO 11 would probably work, but do your measurements and be aware of the drawbacks. We have a few limitations - only one person can shower at a time and if we want a hotter bath, we have to slow down the water flow (or turn up our tank to preheat the water more). I like having a back up to the tankless (I am not sure I would ever depend on a single whole house unit). I like never running out of hot water My plans: I am going to try to troubleshoot the old unit. If I get it working, I may replace the tank and use two ECO 11's in series.
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Reviewed in the United States on December 20, 2024 by TWB