EcoSmart 24 kW Self Modulating 4.6 GPM Electric Tankless Water Heater-ECO 24 at The Home Depot
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Model # ECO 24

Internet # 203316217

24 kW Self Modulating 4.6 GPM Electric Tankless Water Heater

EcoSmart 24 kW Self Modulating 4.6 GPM Electric Tankless Water Heater

This item has been discontinued.
The Home Depot no longer carries this specific product.

$502.72 / each
  • Save up to 60-percent on your water heating cost
  • Heat exchangers that provide 99.8-percent energy efficiency
  • Standard, reliable, easily serviceable elements
Item cannot be shipped to the following state(s): GU,PR,VI


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Model # ECO 24

Internet # 203316217

Store SO SKU # 1000114456

EcoSmart Electric Tankless Water Heaters, also called Instantaneous On Demand Water Heaters, provide endless hot water on demand and only as needed. Self modulating flow sensor technology regulates the amount of energy required to heat the water needed. This Smart Technology electric tankless water heater is configured for climates where incoming water temperature can reach as low as 37 Degrees Fahrenheit. This model is well suited for homes in the Northern U.S. and Canada and in the southern U.S. that have large Roman-style or Jacuzzi tubs and that have generally more demanding water usage needs.

  • Lifetime warranty
  • Patented self modulating technology and design
  • Never run out of hot water with an EcoSmart tankless water heater
  • Digital temperature control allows you to set your temperature in increments of 1 degree
  • All EcoSmart electric tankless water heaters come with an automatically resettable thermostat as opposed to a manually resettable thermostat. The integration of all components and quick connections are designed to promote simplicity for the installer and the user
  • Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements
  • Refer to the orange more Info tab for help with: location specifications guide, installation, and troubleshooting manuals
  • Tankless Electric Buying Guide

    EcoSmart Buying Guide

Info & Guides

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Amperage (amps)  100  Assembled Depth (in.)  17.0 in 
Assembled Height (in.)  18 in  Assembled Width (in.)  4 in 
Certifications and Listings  1-UL Listed,CSA Listed,ETL Listed  ENERGY STAR Certified  No 
Electric Product Type  Commercial & Residential  Finish Family  White 
Flow Rate @ 35 F Rise (gallons/min)  4.64 gal (US)/min  Flow Rate @ 45 F Rise (gallons/min)  3.63 gal (US)/min 
Fuel Type  Electric  Indoor/Outdoor  Indoor 
Labor Warranty  No Warranty  Maximum Temperature (F)  140 
Minimum Activation Rate (gpm)  .25  Minimum Temperature (F)  80 
Part Warranty  Lifetime  Point-Of-Use  No 
Product Depth (in.)  17  Product Height (in.)  18 
Product Weight (lb.)  14 lb  Product Width (in.) 
Residential/Commercial/industrial Use  Residential, commercial or industrial  Returnable  90-Day 
Water Connection Location  Bottom  Water Connection Size (in.)  3/4 In. NPT 
Water Heater Features  Wall Mountable  Wattage (watts)  24000 


Rated 4 out of 5 by 6 reviewers.
Rated 5 out of 5 by Work as advertised I manage 40 unit condo complex and I have installed (will need hire licensed electrician and plumber) about 10 different tankless water heater units. And this one works as advertised. Simple and intuitive installation once the licensed electrician allocate enough power to the unit. By the time the electrician and plumber's cost are added the total will probably about 2x or 3x the cost of regular water heater. HOWEVER, the saving in electricity and disaster prevention (like when conventional water heater bust and cause flooding) is well worth the project. Because the unit is tankless there is no worry about flooding when it stops working. July 8, 2014
Rated 5 out of 5 by best product We purchased this electric water heater in 20010 from the manufacturer. This is a US made product. Excellent low cost and low electric consumption . It does not use all the modulators at one time, only when it is absolutely necessary. No more hot water heater leaks. Use on demand product. I recommend the bladder retainer that the manufacturer sells. Set your water temperature for your taste without mixing. Did have minor problem with it going out . The modulator line burnt out. But the manufacture immediately sent out the parts that needed replacing with no problems. They have the best customer service I have had in years. April 4, 2014
Rated 2 out of 5 by Can't install in my house Bought this to convert standard water heater because of the reviews on it. Had two electricians out to give estimate on the wiring required (3 40amp breakers) only to find out that my electric box was already filled up and there was no way to fix it. I guess that is not quite right, for $5000.00 they would do some re-wiring but could not guarantee the results. Had to take it back, bummer. MAKE SURE TO GET AN ELECTRICIAN TO LOOK AT YOUR SERVICE FIRST. October 14, 2014
Rated 5 out of 5 by It does what I hoped for My last house had a large gas tank-less unit so I knew what I was getting into. I know the electric versions do not have the BTUs the gas do but the new house is electric only. I went with the 24 KW unit but after install wish I had gone with the 27 KW. I called EcoSmart tech support and found out that the only difference is the heating elements. I was going to buy the three 9000 watt elements but they said they would send them for free if I paid the shipping! What a deal and what a good company. I installed the elements when they arrived only to realize I did not have three 8000's but two 9000's and one 5500 element. I was 500 shy of the 24 KW I bought but they had already corrected it so I don't care. When you install look at the top of the elements and make sure you have what you should have. Even if you don't EcoSmart's support will take care of you. Now we have full pressure super hot water at our multi-head shower all day long. I still need to play around with the temperature on the unit for the best efficient setting but that is easy. Just make sure you use the correct size wire and breakers and the rest is cake to install. April 30, 2013
Rated 4 out of 5 by Fairly easy install Was a decent install for a semi experienced person in electrical. I like the digital temp display and easy temp adjustment. So far only used for a month time will tell how well it works. Could use a list of size wire needed for the hook up I had to go online to see what size wire was needed. It does say size and how many breakers for the model. December 31, 2013
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