|Part Number||ECO 18|
|Item Weight||14 pounds|
|Product Dimensions||3.6 x 14 x 17 inches|
|Item model number||ECO 18|
|Size||17 x 14 x 3.5|
|Item Package Quantity||1|
|Warranty Description||Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.|
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4 Year Asurion Home Improvement Extended Protection Planfrom Asurion, LLC
- Mechanical and electrical failures are covered after manufacturer warranty expires
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Ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
- Enter your model number to make sure this fits.
- The product is highly durable
- The product is easy to use
- Manufactured in China
- Copper and stainless components designed for efficiency, durability and easy replacement.
- Amperage (amps):75
- Lifetime warranty for residential use
- Save up to 60% on your water heating costs with the most advanced, self modulating technology available
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From the manufacturer
With the most advanced technology in water heating, our tankless water heaters can save you up to 50% on water heating costs. Select models are assembled with our very own patented self-modulating technology so they regulate exactly how much energy is needed to heat the amount of hot water needed. Not only do our top of the line tankless water heaters save you money, they are also compact and wall-mounted so you save valuable storage space for a new closet! To top it off our models are the only electric tankless water heaters with a lifetime warranty on the market.
Electric Tankless Water Heater
The ECO 18 is a mid range electric tankless water heater with EcoSmart's patented self modulating technology. The ECO 18 is capable of heating two sinks and two showers simultaneously in warm climates, and a shower and sink simultaneously in colder climates. The digital temperature control allows you to set your outlet temperature in increments on 1 degree, so that you can set the temperature anywhere from 80°F to 140°F.
- Endless hot water on demand
- Self modulating technology
- Compact, durable, stylish
- 99.8% energy efficient
- Simple installation
- Endless hot water
- Save up to 50% on your water heating costs
- Compact design, more storage space
- Digital temperature control
- Limited lifetime warranty
- Easily replaceable elements
- The most advanced self modulating technology available meaning the ECO 18 will adjust how much energy needs to be input based on the energy needed
Endless Hot Water
When sized correctly your tankless water heater will provide you with endless on demand hot water. It heats water as it passes thru the unit, instead of storing hot water like a tank type water heater.
Save Money, Save Space, Save Energy
Save Money - EcoSmart tankless water heaters only turn on when you need hot water - plus they cut down on heat loss, saving you up to 50% in water heating costs.
Save Space - Traditional tank heaters take up a lot of space. But EcoSmart's sleek, wall-mounted design frees up floor space for more storage.
Save Energy - EcoSmart features the most advanced self-modulating technology, only using the amount of energy needed.
Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location.
Next you will determine how many applications your unit can run simultaneously at your chosen location inlet water temperature.
Determining specs and electrical infrastructure is important because without the correct infrastructure your unit may not fit onto your breaker panel.
|Model||ECO 8||ECO 11||ECO 18||ECO 24||ECO 27||ECO 36|
|Temp. Range 80°F - 140°F||✔||✔||✔||✔||✔||✔|
|Required Breaker||1 x 40 AMP||1 x 60 AMP||2 x 40 AMP||3 x 40 AMP||3 x 40 AMP||4 x 40 AMP|
|Wire Gauge||1 x 8 AWG||1 x 6 AWG||2 x 8 AWG||3 x 8 AWG||3 x 8 AWG||4 x 8 AWG|
|Size||11.5" x 8" 3.75"||11.5" x 8" 3.75"||17" x 14" x 3.75"||17" x 17" x 3.75"||17" x 17" x 3.75"||17" x 21" x 3.75"|
|Weight||4.75 lbs||6.5 lbs||11.25 lbs||13.75 lbs||13.75 lbs||17.4 lbs|
|Water Connections||1/2" CF||1/2" CF||3/4" NPT||3/4" NPT||3/4" NPT||3/4" NPT|
ECO 11 Electric Tankless Water Heater
The ECO 11 is designed to heat up to 2 gallons per minute and is optimal for weather of 67° F and above. It can be used for multiple or single applications depending on your climate. In warm climates, the ECO 11 can handle two sinks running simultaneously and one shower, or two sinks simultaneously in colder climates.
ECO 24 Electric Tankless Water Heater
The ECO 24 has a slightly less heating capacity than the ECO 27. In colder climates as low as 37°F, the ECO 24 can heat a shower and two sinks simultaneously, and in warm climates, three showers and two sinks.
ECO 27 Electric Tankless Water Heater
The ECO 27 has a slightly more heating capacity than the ECO 24. In colder climates as low as 37°F, the ECO 27 can heat 2 shower simultaneously, and in warm climates, it can heat up to four showers simultaneously.
ECO 36 Electric Tankless Water Heater
The ECO 36 is the largest electric tankless water heater produced by EcoSmart. In colder climates as low as 37°F, the ECO 36 can heat a shower and two sinks simultaneously, and in warm climates, three showers and two-and-a-half sinks.
This Smart Technology electric tankless water heater is configured as a "whole home" model for climates where incoming water temperature is 62°F and above. The ECO 18 is capable of heating over 2.5 gallons per minute, which is the equivalent of one water saver shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 62°F, and an output setting of 105° F. Two showers emitting no more than 1.5 gpm each can be run simultaneously when incoming water temperature is above 70° F. Digital temperature control allows you to set your temperature in increments of 1°. All tankless water heaters are sized based on flow rate and temperature rise, and there is a direct relationship between the two. So if used in a cold area requiring a high temperature rise, it will be more limited in the amount of fixtures (gallons per minute) it can heat at one time compared to a warmer climate. However, when sized properly it will provide endless hot water and only consume the energy needed, giving the user complete control. Prior to purchase and installation please verify this model is the right size for the expected demand and electrical requirements. The ECO 18 requires a minimum 150 amp electrical panel for installation with (2) 40 amp double pole breakers connected to (2) sets of #8 awg wire. Plumbing connections are 3/4" NPT. For additional assistance please feel free to contact our support center at 877-474-6473.
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.
Top customer reviews
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I have two of these units, one for DHW (Domestic Hot Water) and the other to operate our whole house hot water baseboard system. Some information is hard to find, and other information is a closely guarded secret and cannot be obtained anywhere online. I'll focus on these areas.
The unit is rated at 27KW at 240 volts. Internally, it is three separate 9KW heaters, operating in series and in sequence based on demand. The unit is truly self-modulating and will not provide more heat than the load requires.
Each individual heater requires a dedicated 240 circuit, rated at 40 amps, and provided via #8 wire. For the Ohm's law fanatics, each unit draws 37.5 amps under full load, for a total system load of 112.5 amps. Anybody that tries to operate this unit off of a 100 amp main breaker deserves what he gets. We have ours connected to our main 150 service, and can get away with it because everything else in the house is "green" and we can operate everything else with the 37.5 amps available if the heater is running under full load.
I'll say this again: Each internal unit requires a separate, dedicated 240 volt 40 amp circuit, equalling a total of three separate #8 wire 240 volt circuits. I hope I made that plain enough.
The heat exchangers inside the heater are 3 copper pipes, cross connected in series with about 1/2" dia. copper sections. So there is a flow restriction, but nothing as radical as some of the reviews would have us believe. Some reviewers have posted that their hot water is down to a trickle. I've been inside this unit from top to bottom. If your hot water only dribbles, it is time to clean your pipes or replace your valves. We have not been able to observe a loss of flow anywhere in our house, enough said about that.
The upper temperature limit is 140 degrees F. That is a difficult number to discover, but it is out there if you do your homework. Regardless, 140 is the hard upper limit in DHW mode. This is not a limitation of the unit, it is a safety limitation to minimize the chance of someone scalding themselves, and EcoSmart states this all across their web pages.
Here's the undocumented stuff:
EcoSmart supports hot water heating, and even provides plumbing diagrams. However, they will not tell you how to get 160 or 180 degree water. There are internal jumpers in the heater that allow you to limit the maximum output temperature to 105 degrees (handy for the elderly or where there are small children playing with the knob), and it is also possible to set a wattage limit across the 3 heating elements. The factory setting is 9KW per element, and 140 degrees max. output. At the very top of the jumper strip is one marked "180". With power removed, place a jumper on these two pins and the unit will allow a setpoint of up to 180 degrees when power is restored.
Most hot water heating systems operate best in the 160 degree area, and the older oil fired boilers actually used a setpoint of 200 degrees. Clearly, a heater with an upper limit of 140 degrees could cause poor performance of most baseboard hot water systems, and many of the newer hydronic systems. We replaced an antique oil fired boiler with the ECO27, and placed the setpoint at 160 to get started. The performance is nothing short of amazing, and I've actually dropped the setpoint to 150 until we get into the dead of winter. It is very nice to know that we have a reserve available.
EcoSmart provides a wealth of information about the capability of this unit. I see over and over again that people can't (or won't) get their heads around a lot of what's commonly available. Simply, if you need 4 GPM, the best this unit can do is heat the water by 46 degrees. In other words, if you want a 110 degree shower (at a ridiculous 4 GPM), you must have incoming water of at least 64 degrees. If you live in an area where your water source is about 50 degrees, you will get 96 degree showers at 4 GPM. The obvious solution is to spend $20 and get a low-flow shower head. At 3 GPM this unit can give you a 110 degree shower with incoming water of only 49 degrees. At 2 GPM this unit will provide the full 140 degree setpoint with 50 degree incoming water.
In boiler service, obtaining 160 degree water will require incoming water of at least 114 degrees. Most hot water heating systems operate with a differential of less than 20 degrees, so this unit is just loafing along while providing 160 degree water to your baseboard units. Also, most standard hot water heating systems have a design of either 1 GPM or 4 GPM. The temperature rise chart from EcoSmart demonstrates that a temperature rise of 184 degrees is possible at 1 GPM. Again, most hot water systems operate with a differential (or "Delta-T") of around 17 degrees, often less. The actual temperature setpoint isn't the focus as much as being able to maintain the differential is. So for a 180 degree output, we need to feed the heater with 163 degree water. At a mere 17 degree rise, this heater can easily flow well beyond 6 GPM, probably closer to 10 GPM, but we only need a max. of 4 GPM. So for boiler service, it is a perfect solution. It is small, silent and smart.
If you're considering this unit for hot water baseboard or hydronic service, it is capable of 92,000 BTU/hr.
It has been incorrectly represented that this is the largest electric tankless available. The largest commonly available electric tankless is 36KW. Just to set the record straight.
Overall, I give this unit 5 stars. Price, reliability and technical support are right up there. The unit comes with a lifetime warranty when professionally installed. Cleaning and maintenance is accomplished with a Phillips screwdriver, no more pipe wrenches and fiberglass insulation to contend with. The unit is so small and lightweight that I actually carried it into the house under one arm, installed it and said nothing. Nobody knew that I'd done this until days later!
The unit supports a remote thermostat which is very inexpensive and is waterproof. The little remote connects with telephone wire and is perfect for a location next to your sink or shower.
We are a 3 adult household, using all of the "normal" things, doing laundry, taking showers, washing dishes, etc. I have been able to purposely cause the heater to fail to keep up, and that was by running the tub wide open. In any other situation, two showers at once, someone in the shower, someone else doing laundry, etc., I have yet to hear a single complaint. All I ever hear is how wonderful it is to have a long shower, or not have to wait 1/2 hour, etc. The days of my wife complaining about no hot water for the dishes because I took a long shower have ended!
This is a true, self-modulating unit. People that have reported lights flickering and their TV having problems need to look at their house wiring. The unit starts softly, just like turning up a light dimmer. There are no flashing lights in this household. The only way I've ever been able to tell if the unit is running is to actually look at it - The display is only lighted when the unit is operating.
Not to be overlooked is the energy savings. A tank heater will cycle 24/7, to maintain a tank full of hot water, even if you're on vacation. The tankless does absolutely nothing unless it detects water flow. Through an intelligent design EcoSmart units ignore faucet drips and won't send hot water to drippy faucets. The minimum flow to start the unit is 1/4 GPM.
Hope this helps to quash some bad information and get accurate information posted.
This posed problems for my application since 1) the installation was for a remodeling project and could not be completed in the next 30 days 2) the area where the home is located does not require licensed electricians or plumbers for remodeling work (and none were going to be hired to install a water heater, as I have those skills myself, having renovated 27 homes previously and I have college degrees and construction trade experience in those fields). Therefore I wrote a letter to Ecosmart asking for exceptions to the requirements, else I wanted to return the units for credit. I received an email response from the then-Director of Operations Mr. Nicholas Cardoso who stated, as directly copied below:
"As long as the units are properly stored there will not be a problem. When the units are installed just send in the registration information and we will document all the information should you need assistance in the future. If you have any questions let me know.
Director of Operations
ECOSMART US, LLC
3315 NW 167th Street
Miami Gardens, FL 33056
It is my understanding from web information that Mr. Cardoso later became the CEO of the company and is still employed by them although the company was sold.
I returned the 3 warranty cards within 90 days, once the units were installed, and retained the customer half of each card, as was required.
So when one of the units failed recently, I contacted customer service, and during 3 emails and 3 phone calls over 1 week was told that Ecosmart only sends out repair parts for these units, not replacement units. Therefore the customer must remove and disassemble the internals of the units to repair them himself. This requires the customer to have electrical and plumbing experience and proper tools for disassembly. Furthermore, the heat exchanger - the part that failed - is not available as a replacement part. And finally, I was told that Ecosmart had an old database that may contain my records, but the current database has no records of my purchases nor their receipt of my warranty cards. IN OTHER WORDS, THERE IS NO WARRANTY EVEN WHEN THE CUSTOMER RECEIVED PERSONAL ASSURANCE OF A WARRANTY FROM THE CEO OF THE COMPANY. I asked to speak with Mr. Cardoso but was not allowed access to him.
Now you know why Ecosmart wont post the terms of their warranty on their website. BUYER BEWARE.
With the life of these units being about 3 years, and since the units have unique, non-industry-standard electrical and plumbing connections, which makes quick replacement labor-intensive and/or impossible, you should buy a spare of these to keep on hand when one fails.
I ordered a replacement from Amazon. Incidentally, the new unit has the same internal copper tubing design flaw as the old one, and still has an incoming wire clamp connector that wont meet electrical codes because electrical conduit, not unsheathed #8 wires, is required for the installation; the cable entrance hole in the panel is not large enough to accommodate a conduit connection for those wires. Takes a large hole punch and/or a Dremel tool to enlarge the existing hole so that a conduit connection can be made.
Picture shows where the weak point is that leaks over time. It is the center connection between 2 heat exchanger tubes.
Units do work well when they work. Just buy a spare, as you'll eventually need it.
Most recent customer reviews
Straightforward install (by an engineer) with the diagrams and details in the box...Read more