EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1, 12 x 8 x 4
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Availability:
In Stock.
Arrives
Thursday, Oct 8
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Features
- The product is highly durable
- The product is easy to use
- Manufactured in China
Description
EcoSmart ECO 8 is an 8-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 0. 8 and 1. 9 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. 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: Corded Electric
Product Dimensions: 8"W x 11.5"H
Special Feature: LED Display
Power Source: Corded Electric
Special Features: LED Display
Wattage: 8000 watts
Voltage: 240 volts
Flow Rate: 2 gpm
Heat Output: 8 KW
Efficiency: 99.8%
Mount Type: Wall
Capacity: 2 gallons
Item Dimensions W x H: 8"W x 11.5"H
Item Weight: 4.8 pounds
Item Depth: 4 inches
Material Type: Stainless Steel
Color: White
Style Name: ECO 8
Brand Name: EcoSmart
Model Number: ECO 8
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: 854920002183
Manufacture Year: 1987
Global Trade Identification Number: 83
Included Components: electric tankless water heater
Item Type Name: Electric Tankless Water Heater
Manufacturer Part Number: ECO 8
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Oct 8
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.
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Top Amazon Reviews
Size: 12 x 8 x 4
Style: ECO 8
I (late 40's, mechanically-minded woman) just installed this unit in our home. Installation not too complicated, this replaced a 50-gallon tank water heater. Servicing two sinks and two appliances, (kitchen, 1/2 bath and laundry room) I sized this item to the available electrical supply, as I did not wish to incur the extra expense of additional wire and another circuit breaker. Existing wiring consisted of one double-pole 40-amp breaker and sufficient gauge conduit. Since this unit is supplying a dishwasher, washing machine, kitchen sink and bathroom sink, none of which would be likely opened at the same time, I figured this unit should be more than sufficient. So far, so good. Did not experience the leakage problems with the compression fittings others have noted, I think these fittings simply require a gentle hand. I did have to make adjustments from 3/4" supply lines down to the 1/2" necessary for this unit; the downsized pipe acts as a self-restrictor of sorts, slowing down the water flow to allow ample heating of the water before it exits the heater. I also installed an inline scale inhibitor filter, Aqua-Pur AP430SS, so reconfiguring the plumbing was necessary, as well as the addition of two 1/4-turn ball valves. (Highly recommend replacing the crappy spigot-handled gate valves that are typically installed with original tank water heaters, these things rarely actually completely shut off the water supply to the heater, especially in an emergency or during maintenance.) This was also my first attempt at sweating copper pipe and fittings, and after a few tries, achieved success with leak-free connections. Hubby seemed impressed that I did not burn down the house... although I don't think he really was confident in allowing me to play with the blow torch. A word of caution, as others have mentioned, the manufacturer stipulates installation by a professional plumber, (name and license number required on the warranty registration card) or apparently that 'lifetime warranty' is voided. That is disappointing, but if installation will cost more than the appliance, (as is common) sometimes you gotta do what you must. Did spend additional funds for the sediment filter, copper pipe and brass and copper fittings, and flexible SS supply lines, (highly recommend Falcon Industries' hoses, although they're made in China,) but estimate I saved a minimum $300.00 on installation, probably more. Be careful with the compression fittings, enclose your electrical connections inside a lidded junction or outlet box, and purge the line for a few minutes to ensure all air has been removed prior to turning on the heater, and you should be good to go. I do like the simple knob control, which allows precise selection of output temperature, and the fact that the unit can be turned on or off without having to mess with the breaker panel. This is handy when changing out the sediment filter, or for other non-electrical maintenance. It will be interesting to note the difference in the next electric bill or two; this is the second tankless electric water heater we've installed in the house. (Purchased previous unit on Amazon, see my earlier reviews for that unit.) After the first one about eight years ago, the following month's electric bill was about $30.00 cheaper. Eagerly anticipating the next one to see if similar utility savings will be realized. Also have plans to utilize the newly-found storage space in the corner of our garage that was formally occupied by the old water tank.
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Reviewed in the United States on September 11, 2013 by Madam H
Size: 12 x 8 x 4
Style: ECO 8
Using for my bathrooms and heat really fast even when i use the bathroom further away,so i can rely on having hot water when i need it.it only comes on when it is using,good price also.it really works..
Reviewed in the United States on August 18, 2026 by connie
Size: 12 x 8 x 4
Style: ECO 8
I read many reviews of this water heater before buying it. One common complaint was that the water heater leaks. When I first installed it, I did have major leak at the threads which connect to the flexible hose. Another quarter turn of the wrench and problem solved! The other problem is that the instructions say to use flexible water heater hoses. That would be fine except that this model has 1/2" connectors and not 3/4" connectors. I used regular 1/2" hoses and connected to 1/2" pex. I also installed a cutoff valve on the cold side. I did have one hiccup. When I installed this, I had not put the final mixer in the new shower valve body. Instead, it still had the plug which keeps it from leaking. However, hot and cold water can intermingle when the mixing valve is not in there! The first time we tried the hot water in the sink, it wasn't too hot, but had moments of scalding hot and moments of almost cold. Once I installed the valve in the shower controller, all of that went away and we have water hotter than we could shower in! I installed this is a guest room which is not part of the central house. Therefore, only the shower and bathroom sink are running off of this. I do not think it would do more than that. However, it is perfect for our use! We have a water well and the water is fairly cool, so it can get the water more than hot enough for a shower. Currently, our well house is not insulated, but we plan to do that before winter comes.
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Reviewed in the United States on September 29, 2014 by KSev 83
Size: 12 x 8 x 4
Style: ECO 8
I just received the product, and haven't yet installed it. It appears to be well constructed, and it includes adapters for either compression or Pipe thread connections. But here's the rub: There's a big warning on the case, and a sealing sticker that the warranty will be void if the case is opened. Sounds like standard boilerplate, right? ...Until you realize that the mounting screws and plumbing connections are external, but the Electrical conections are internal. The description on the web seems to imply that a power cord is pre-installed, but the unit I received had no power cord, and just a female threaded hole on the bottom for a conduit connector. The actual electrical connections are inside the case, so there is NO WAY that it can be installed without breaking the seal and opening the case. So expect to file a lawsuit if you ever need to make a warranty claim. Hopefully, I will rely on the other good reviews for this unit and trust that I'll never need to do that... It's probably an excellent unit. I chose it because it is the smallest unit on the market that uses a modulating thermostat. I live alone in the country, on a private well, and the fixed on-off thermostat in the Atmor 6.3kw unit I tried drove me crazy with varying output temp as my well pump varied the pressure from 40 to 60psi. I have much better hopes for a comfortable shower without scalding or freezing surprises with this unit. It's also listed as having a .25 or .3 GPM cut-in flow, which is less than the .5gpm of the Atmor unit. I believe that was responsible for some of the chilling 60-degree surprises in the shower as well. So the bottom line is this: Insist on a modulating thermostat if your use case is a shower, or even a handwashing sink with a single-handle control. The simple on-off models would be fine for a non-human use like a dishwasher or washing machine, and probably manageable for kitchen or handwashing with dual-handle controls. But in my opinion, a single-handle control is incompatible with an on-off thermostat because output temp varies inversely with flow rate, so the use of a single-handle control is dangerously non-intuitive. UPDATE: Well, I've had it installed for a day now, and I've used it for a single glorious shower. The temp wasn't absolutely constant, but the variation was well within a safe, comfortable range. I have an energy monitoring datalogger on my electrical supply (OpenCMS), and a review of the energy use during my shower showed a clear repeated sawtooth pattern as the well pump kicked the pressure up to 60psi, then fell slowly to 40psi. The difference in flow was not obviously apparent in the shower, but clearly the sensors in the ecosmart unit responded quickly and appropriately to the changing conditions. There's one other grmbl I should mention. Not only are the electrical connections located inside the unit, so voiding the warranty is a necessary pre-condition to installing the unit, but the 'Earthing' Green screw is located UNDERNEATH the central thermostat control and display. Not only that, but it's much too small for the 8GA wire that the code requires in this area. I was forced to remove four additional screws so I could lay the thermostat assembly to the side to make the connections, and find a crimp-on fork connector for the wire. That was non-trivial in itself. It's not common to connect an 8GA wire to a #6 or #8 stud, so every one I had on hand was either too small for the wire, or too big for the stud. Is it too much to ask to design it with a three-terminal block instead of a two-terminal block and a tiny hidden screw? How much would that cut into your profit margin? Back to the plus side... The internal plumbing parts appear to be stainless steel, and the inlet and outlet temp sensors are actually inside the water flow. That's probably responsible for the fast response and small variation in temp control. On the other unit, the internal parts were plastic, and the single temp sensor was just zip-tied to the outside of the heater chamber. The insulation value and thermal mass of that plastic I'm sure contributed to the wide temp swings and scalding surprises. Bottom line: This EcoSmart 8 appears to be mostly well designed and constructed, so I'm expecting a good service life from it. It was the only model I could find that has a modulating thermostat and would run on a single 40Amp breaker. (Did I mention I live in a mobile home with a 50Amp main supply?) Oh, one other thing: Both inlet and outlet connectors are near the top of the case, and there is no gravity drain provided at the bottom. So avoid this unit if your use case is a seasonal summer home and you need to drain in the fall for winter freeze protection. With this unit, you'd need to use an air compressor to blow out the unit, and even then, it would only be effective if you applied the air pressure backwards, from the outlet side.
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Reviewed in the United States on September 28, 2019 by Richard G.
Size: 12 x 8 x 4
Style: ECO 8
For the money, it is not worth it. I bought this unit because I did not want to use natural gas any longer. I was on my way to installing solar panels and LiOn battery storage. It took 2 months to figure out that it was not my plumbing that was the problem but it was the unit. Which is past the return date. Now I'm stuck with it. Going back to gas for now with a unit rated at 4.5gpm. Hopefully that will solve the issue. last week, tech support says 1.5GPM but that is not true it is much less. I expected a bit more from an endless supply of hot water but that is not the case. A 1 GPM is but a trickle of hot water. I thought that maybe anything above that would be warm. Again, that is not the case with this model. Anything above 1GPM flow rate, the heating element completely shuts down. Leaving you with no warm water at all but all cold. This is practically useless even for a one person use. The flow rate is so low that it is more of an aggravation than any convenience. I also went to an expense to hire an electrician to put in 40amp breakers. Just a total waste of money. The higher you go in GPM the hire you have to invest in higher amp breakers. Some of these breakers will cost $100+. Don't buy this unit.
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Reviewed in the United States on March 30, 2022 by Agnostic Savant
Size: 12 x 8 x 4
Style: ECO 8
Works well.
Reviewed in the United States on August 11, 2026 by Smith
Size: 12 x 8 x 4
Style: ECO 8
I would like to point out that we bought an open box version of this through Amazon so I would like to point out a few things if you are looking at those as they are a good amount cheaper than the standard. 1) Just because they say "Like New" doesn't mean that it comes with all of the parts. Ours was missing all the connectors and adaptors. The price was cheap enough that if we had wanted to we could have purchased what we needed from a local hardware store but it would have taken a good chunk of our savings. * 2) If you do get an Amazon open box and it is missing parts your only option through Amazon is to return it, I wish you could just e-mail them and ask for the missing parts. As for the water heater itself, it is a pretty rocking little unit. We live in Phoenix AZ so the water coming into our house is about 70ish degrees, but at that temp this little thing gets our water to 140 at the showers with no problem (We do have low flow shower heads that are about 1 gallon per minute), the kitchen sink sees temps of about 135 and the bath tubs see temps at about 120. Now this will probably not work when winter hits (we are looking to upgrade then and use this one on another project) but our water heater went out and we were looking for a quick solution that we wouldn't have to run new wires for (we had a single circuit 240 with #8 wire so it could handle the breaker upgrade to 40amps). When winter comes and it isn't 160 degrees in the attic I'll run new wires and upgrade with not problem. We were worried that we would have to live with tepid water until a more permanent solution was available but honestly we love this little sucker and kind of hope that our fears that the water temp will drop too much in the winter are unfounded. The thermostat control is great too. With it being an on demand unit, I can lower the water temp to the exact temperature I enjoy for my showers and not even have to fiddle with the cool water at all. * EcoSmart was awesome. When we opened the box and found parts were missing we were able to contact them and they sent out what we needed for free. Unfortunately because it was an open box they can't warranty it (which I completely understand because it was installed by whoever returned it to Amazon in the first place) but they were still willing to work with us to get the unit installed. Great customer service.
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Reviewed in the United States on August 11, 2015 by Andy Wise
Size: 12 x 8 x 4
Style: ECO 8
Excellent product, documentation, and support. I replaced another product with this one and it has performed well for 5 years. I had to replace the electrode about every two years due to high mineral in my water, but the documentation and support was good and the the product is easy to work on.
Reviewed in the United States on February 17, 2026 by Linda SantAngelo