EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
Condition: New
Buy Now, Pay Later
As low as
$34.46
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Tuesday, Apr 28
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 Gallons Per Minute
Maximum Temperature: 140 Degrees Fahrenheit
Heat Output: 11 Kilowatts
Efficiency: 99.8 %
Mount Type: Wall
Is Electric: Yes
Color: White
Style Name: ECO 11
Material Type: Plastic
Capacity: 2 Gallons
Item Dimensions W x H: 8"W x 11.5"H
Item Weight: 6.5 Pounds
Item Depth: 6.5000
Brand Name: EcoSmart
Model Number: ECO 11
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
Manufacturer Part Number: ECO 11
Included Components: electric tankless water heater
Unit Count: 1.0 Count
Item Type Name: electric tankless water heater
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Apr 28
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Size: 12 x 8 x 4
Pattern Name: Water Heater
This water heater works great. It is so much better than having a traditional water heater. It takes up so much less space and showers can last forever if you want them to. It heats up quickly and provides steady hot water for as long as you need. We are in Ohio and this runs a shower in the winter. Flow does have to be limited but its still a very enjoyable enjoyable shower. Setup was mostly easy, but you will probably need adapters to replace your current water heater. Overall this is a great value and I can recommend it.
...
show more
Reviewed in the United States on February 14, 2026 by Xn47sjD
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.
...
show more
Reviewed in the United States on September 2, 2012 by RBianco
Size: 12 x 8 x 4
Pattern Name: Water Heater
These small tankless water heaters work great for small applications. 2 bathrooms max but prefer to use with one. Easy to install with different configurations like using cpvc, coper or flex hose. Must use a 60Amp breaker and the correct size wire if not currently installed. You can also buy spare parts if needed.
...
show more
Reviewed in the United States on April 12, 2026 by Extreme DIY
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.
...
show more
Reviewed in the United States on February 26, 2014 by Cyvster