Author: Maurice Savaryego, M.Sc.Eng. (Learn More)
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Compare ecoSMART ECO Electric Tankless Water Heaters: ECO 8 vs. ECO 11 vs. ECO 18 vs, ECO 24 vs. ECO 27 vs. ECO 36
ecoSMART makes the following tankless electric water heaters which had received great reviews from Amazon customers who had bought them and tested them
The following pictures show the internal components of the ECO 18 and ECO 24 tankless heaters:
- ecoSMART ECO 36 is the 36-kW and most powerful tankless water heater made by the company, with the capacity to handle a large single-family home with the need to run hot water simultaneously from multiple applications, even in colder climates. In warmer climates, the ECO 36 heater can run up to four showers and two sinks simultaneously without running out of hot water.
ECO 36 measures 17 x 21 x 3.75 (inches) and weighs 18.35 lbs. - ecoSMART ECO 27 is the 27-kW and one of the most powerful tankless water heaters made by the company, with the capacity to handle a large single-family home, and has the capacity to deliver endless hot water for multiple fixtures, even in colder climates. In warmer climates, the ECO 27 heater can run four showers and one sink simultaneously without running out of hot water.
ECO 27 measures 17 x 17 x 3.75 (inches) and weighs 14.7 lbs. - ecoSMART ECO 24 is the 24-kW tankless heater designed for a medium to large single-family home. In cold climates, this model can heat a shower and two sinks simultaneously, and in warm climates, three showers and two sinks.
ECO 24 measures 17 x 17 x 3.75 (inches) and weighs 14.3 lbs. - ecoSMART ECO 18 is the 18-kW tankless heater ideal for a large apartment/townhome with up to 3 people. The ECO 18 is the mid-range model that can heat over 2.5 gallons per minute. So, it can handle a shower and a sink in cool climates. In warmer climates, it can handle two showers and two sinks.
ECO 18 measures 17 x 14 x 3.75 (inches) and weighs 11.7 lbs. - ecoSMART ECO 11 is the 11.8-kW tankless heater that 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.
ECO 8 measures 11.5 x 8 x 3.75 (inches) and weighs 6.7 lbs. - ecoSMART ECO 8 is the 8-kW electric tankless water heater ideal for providing hot water for point-of-use or low-flow applications. In warm climates the ECO 8 can provide hot water for one shower and a sink simultaneously.
ECO 8 measures 11.5 x 8 x 3.75 (inches) and weighs 5.3 lbs.
The following pictures show the internal components of the ECO 18 and ECO 24 tankless heaters:
As mentioned above, each of these heaters is equipped with a patented, self-modulating technology, so that it will only consume the energy necessary for the current demand.
Note that the water flow rate that can be obtained with each of these heaters depends on the incoming water temperature. Below is a chart showing the flow rate capacity of each model, measured in gallons per minute (GPM), for various inlet water temperatures (from 37°F to 77°F), and calculated for a set output temperature of 105°F.
A single sink-faucet may require a water flow rate of about 0.5 GPM, and a single shower when fully opened may require a water flow rate of about 1.5 GPM. Also, as the temperature of the inlet water rises, the water flow rate capacity of the heater rises as well, which means that you need to select your heater model based on the lower winter temperatures in your region. If the heater can provide enough water flow for your home's needs in the winter, it will provide even more in the summer. So, based on the number of faucets and showers you have at your home and the expected average lowest water inlet temperature where you live, you can use the chart to determine the flow rate you will obtain with each heater model and select the model most suitable for your home:
Note that the water flow rate that can be obtained with each of these heaters depends on the incoming water temperature. Below is a chart showing the flow rate capacity of each model, measured in gallons per minute (GPM), for various inlet water temperatures (from 37°F to 77°F), and calculated for a set output temperature of 105°F.
A single sink-faucet may require a water flow rate of about 0.5 GPM, and a single shower when fully opened may require a water flow rate of about 1.5 GPM. Also, as the temperature of the inlet water rises, the water flow rate capacity of the heater rises as well, which means that you need to select your heater model based on the lower winter temperatures in your region. If the heater can provide enough water flow for your home's needs in the winter, it will provide even more in the summer. So, based on the number of faucets and showers you have at your home and the expected average lowest water inlet temperature where you live, you can use the chart to determine the flow rate you will obtain with each heater model and select the model most suitable for your home:
For example, if you have 2 sink-faucets and a single shower, you will need a total water flow rate of (2x 0.5) + (1.5) = 2.5 GPM.
If the weather where you live is such that the inlet water temperature is about 42°F during the winter, and you want the output water temperature to be always at 105°F, you will need to select either ECO 24, ECO 27 or ECO 36. All three models will provide you with the required flow rate during all year. Clearly, based on the above chart, the other 3 models will not provide during the winter the required 2.5GPM flow rate.
If you live in the US, you can use the following map to determine the low inlet water temperature requirement for your region:
Note: The temperatures shown below are for USA regions only. If you live outside the USA, you should first determine the average low temperature of where you live, and then use the above chart to select the heater model that will respond best to your home's needs.
If the weather where you live is such that the inlet water temperature is about 42°F during the winter, and you want the output water temperature to be always at 105°F, you will need to select either ECO 24, ECO 27 or ECO 36. All three models will provide you with the required flow rate during all year. Clearly, based on the above chart, the other 3 models will not provide during the winter the required 2.5GPM flow rate.
If you live in the US, you can use the following map to determine the low inlet water temperature requirement for your region:
Note: The temperatures shown below are for USA regions only. If you live outside the USA, you should first determine the average low temperature of where you live, and then use the above chart to select the heater model that will respond best to your home's needs.
The following table provides the specs for each water heater model:
Note also the following:
For price information on all the ecoSMART tankless water heater models described above, please refer to the following section:
- All ecoSMART ECO heater models come with the following certifications: ETL Listed to UL-499 and CAN/CSA-C22.2 No. 64
- All ecoSMART ECO heater models come with Limited Lifetime Warranty.
For price information on all the ecoSMART tankless water heater models described above, please refer to the following section:
ecoSMART ECO Electric Tankless Heaters on Amazon
Please click the Amazon US link image below for the product of your choice to see exact price information or to purchase.
Please Note: For non-US customers, when you click the links below, you will be provided with the Amazon links for your country (such as Canada or UK), if the product is available in your country.
Please Note: For non-US customers, when you click the links below, you will be provided with the Amazon links for your country (such as Canada or UK), if the product is available in your country.