EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1, 12 x 8 x 4
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Availability:
In Stock.
Arrives
Tuesday, Mar 10
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Features
- The product is highly durable
- The product is easy to use
- Manufactured in China
Description
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
Brand: EcoSmart
Product Dimensions: 8"W x 11.5"H
Special Feature: LED Display
Color: White
Wattage: 8000 watts
Voltage: 240 Volts
Maximum Flow Rate: 2 Gallons Per Minute
Heat Output: 8 Kilowatts
Efficiency: 99.8%
Style: ECO 8
Mounting Type: Wall
Is Electric: Yes
Manufacturer: Ecosmart
Item Depth: 6.1 inches
UPC: 854920002183
Manufacture Year: 1987
Global Trade Identification Number: 83
Part Number: ECO 8
Item Weight: 4.75 pounds
Item model number: ECO 8
Is Discontinued By Manufacturer: No
Size: 12 x 8 x 4
Item Package Quantity: 1
Certification: WaterSense
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: May 23, 2011
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Mar 10
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
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
Size: 12 x 8 x 4
Style: ECO 8
I built a 16'x20' wood floor shop and installed under floor heating in 2016. Bought this unit as a low cost proof of concept heat source because it met my power requirements and flow rate. I installed a meter to monitor usage and it has over 15,000 hours of flawless operation time on it even while pumping water/antifreeze mixture. I installed a thermal sensor to cut it off when the return temp reaches 110F to let the hot water warm the floor and save some electricity. When the temp drops it turns back on and doesn't need to need to run at full power. I keep wanting to put a current monitor to see what actual watts it draws when not at a full "burn." Our winters here lately have been in the sub 0 range and with this unit my shop will keep at a cozy 65F. I do need to do some more insulation under the floor to make it more efficient but that has nothing to do with the water heater. When this unit dies, I have no qualms about buying another one
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Reviewed in the United States on November 22, 2024 by Daryl
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
I purchased this ECOsmart water heater brand new through Amazon last year, and it completely stopped working after just one year of normal use. When I contacted ECOsmart directly for warranty support, I was shocked to be told that the unit was actually manufactured over 5 years ago, making it out of warranty, even though I bought it as a new product. Now I’m stuck having to purchase an entirely new water heater out of pocket. This is incredibly frustrating and unacceptable. If you’re buying what’s advertised as a new product, you should not receive something that’s already several years old with no warranty coverage. I would strongly caution anyone considering this product to verify the manufacturing date before installing or consider a different brand altogether. Very disappointed with both the product longevity and the warranty.
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Reviewed in the United States on February 2, 2026 by Jennifer