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EcoSmart

EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology , 17 x 14 x 3.5, White

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Availability: Only 4 left in stock, order soon!
Fulfilled by SportingDoc
Arrives Nov 23 – Nov 27
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Style: ECO 18


Pattern Name: Water Heater


Features

  • Voltage 240
  • Phase Single
  • KW 18 kW
  • HZ 50/60
  • Temperature Control Digital

Description

From the Manufacturer This Smart Technology electric tankless water heater is configured for climates where incoming water temperature is 62 Degree F and above. The ECO 18 is capable of heating over 2.5-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 62 Degree F. Two showers can be run simultaneously when incoming water temperature is above 70 Degree F in warmer climates such as South Texas, South Florida, New Mexico, Arizona and South California. These models come with a digital temperature control that allows you to set your temperature in increments of 1 Degree. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.

Brand: EcoSmart


Product Dimensions: 14"W x 17"H


Special Feature: LED Display


Color: White


Wattage: 18000 watts


Brand: ‎EcoSmart


Product Dimensions: ‎14"W x 17"H


Special Feature: ‎LED Display


Color: ‎White


Wattage: ‎18000 watts


Voltage: ‎240 Volts


Maximum Flow Rate: ‎3.51 Gallons Per Minute


Heat Output: ‎18 Kilowatts


Efficiency: ‎99.8 %


Mounting Type: ‎Wall


Is Electric: ‎Yes


Manufacturer: ‎Ecosmart


UPC: ‎854920002046


Global Trade Identification Number: ‎46


Part Number: ‎ECO 18


Item Weight: ‎14 pounds


Item model number: ‎ECO 18


Is Discontinued By Manufacturer: ‎No


Size: ‎17 x 14 x 3.5


Pattern: ‎Water Heater


Item Package Quantity: ‎1


Certification: ‎UL-499


Special Features: ‎LED Display


Included Components: ‎electric tankless water heater


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.


Date First Available: October 19, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 23 – Nov 27

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.

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Top Amazon Reviews

    • Excellent Product, Unmatched Quality at a very reasonable price ***One year update
Style: ECO 18 Pattern Name: Water Heater
Review Image by iScott iScott
The Good As for the item itself I would only suggest that the purchaser make sure they have sized the unit correctly for their needs and have taken their area's ground water temp into account. The unit has a sublimely simple design and its shell is both space efficient and cosmetically pleasing. Unlimited hot water is a decadent luxury and Ecosmart makes it affordable to all. My lady is finally able to take her time wash and shave without ever running out of hot water (yikes for my water consumption). Regarding water consumption I'v found that this unit works amazingly well with the "Spa Fire-Hydrant" shower head, Economy and Performance. The Bad This pertains to the install process and NOT the unit. -- The plumbing is very straight forward and should be doable by a moderately experienced DIY'er with basic plumbing tools and a little soldering know-how. The electrical work is also not very difficult, BUT requires two Double-Pole 40-Amp Breakers and sufficient sized service to handle the unit (which is actually comparatively large). But if you've got the space or are willing to upgrade your electric service, this item is a must-have. Final Warning The large cost for this unit will come from the install by licensed professionals without which you cannot quality for the lifetime Warranty, My advice (if you are not planning to install yourself) would be to get quotes for the install (both plumbing and electrical) and compare those numbers to the cost of the unit if you end up paying more for the install than the unit is worth you might be better off forgoing the warranty because if you do have a problem it would still be cheaper to by a replacement unit. ***One year Update I've had this unit for a year now and recently blew a heating element, (an issue caused by a plumbing change and NOT the unit itself). I only bring it up because its a bit of a pain to have to order a replacement from Eco-Smart since no other place I found (Even Amazon!**(CAN be purchased on amazon now)) carries this odd element size (9kW 240v Screw-In). So I would suggest having a spare on hand to avoid the shipping time wait if it becomes necessary. Also having seen first-hand what kind of scale and build-up can occur at tragic speeds on the heating elements, do yourself a favor and drop the extra $65 on the recommend 'Aqua-pure' scale inhibitor. Most users can only tell you that it seems to work having nothing to compare it against. I have seen both sides and it makes a world of difference! Aside from that, I am Extremely happy with this purchase, there is no going back in my household, Even with my girlfriend's new 45-minute long shower ritual (compared to the 25ish she use to get), I have seen a consistent 20-30% electric consumption drop when compared to the two years proceeding it. So my unit will have paid for itself after another year of usage. If your experience is anything like mine you will NOT be disappointed with this unit, so I'd say buy with confidence ***5-year Update At the 5 year mark, I have been through 2 heating elements (since installed) and always keep 2 on hand to be prepared. I am positive that the unit has paid for itself at least twice and is still working strong. There is absolutely no going back to a standard tanked unit. Until a recent trip out of town in a hotel shower, I'd completely forgot about running out of hot water. The moment this unit breaks I'm replacing it with an identical unit. (A decision made over 2 years ago) every home owner should have one of these units. Save space, save money, and enjoy your unlimited hot water as a bonus for your wonderful investment! *** 10-year update, Just blew another heating element (5 in total now after a decade), and they are now available for purchase on amazon! My unit is STILL running strong and my girlfriend has built her own home and installed an Eco27 (As I mentioned, once you've experienced unlimited hot water there's no going back). This device has already well exceeded my expectations and I'm overjoyed to give an amazing review. Love this product and WILL buy again in the home I'm planning to build. ... show more
Reviewed in the United States on April 2, 2014 by iScott iScott
    • Ecosmart 18, a winner!
Style: ECO 18 Pattern Name: Water Heater
The Eco 18 has been working great the few years I have had it: Never run out of hot water! Easy install! (Recommend having some experience) Small size! No lugging water heater to basement. I replaced my 30 year old gas water heater with the Ecosmart 18 after it started leaking. My eventual goal is to switch my house completely to electric appliances, so the furnace is the only one I am still running on gas. I haven't seen my electric bill change drastically from this, and my gas bill definitely went down some especially in the summer. In my case I live alone in the Midwest and the only thing I use hot water for is showers and my dishwasher. If you don't know the GPM flow of your shower head, get 5 gallon bucket or other container that you know the volume of and time the fill-up to figure out your needs, then use the chart to determine model. I did try using the Eco18 with my clothes washer and got an error that flow was too high, so if I did ever decide to use hot water for clothes washing I could put a reducer and the washer would just take longer to fill up. If I did ever have more people living with me I might need to get a more powerful model. As for electrical, they recommend using a 200amp or bigger service to run the required two 40amp breakers to power the water heater. In my case, since I don't use the electric oven (50amp) while I take a shower, I am actually doing just fine running it off my 100amp home service. You just need to be aware of what your total electric needs are and plan accordingly. In my case, the water heater could draw 70 amps and the dryer or air conditioner would add another 10 to 15 amp to that, still coming in below 100amps. Again, if I were to have other people living with me I would probably like to have more power available for that plus a more powerful unit. Eventually I plan to upgrade my home to 200amp service, when I replace my gas furnace with a whole house heat pump. Because I have experience with plumbing and electrical I was able to save a sizable amount by making a DIY project of this. As some other reviews have suggested, I keep a few spare heating elements on hand. Highly recommend, would do it again in a heartbeat! ... show more
Reviewed in the United States on October 25, 2025 by Amazon Customer

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