Model # ECO 27

Internet #203316218

Store SKU #1000017272

Store SO SKU #1000094390

EcoSmart 27 kW Self-Modulating 5.3 GPM Electric Tankless Water Heater
0854920002091

EcoSmart

27 kW Self-Modulating 5.3 GPM Electric Tankless Water Heater

  • Can support Whole House Applications
  • Consult electrician. Requires 3 x 40 AMP Double Pole Breakers
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.
$50500 /each

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Product Overview

Eco Smart, 3 Smart Steps for Endless Hot Water
Attention Product Requires Professional Installation

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°F. The ECO 27 is capable of heating nearly 3 GPM at this temperature. The ECO 27 is the largest electric tankless water heater available with Self-Modulating Technology. These models are 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 right size for your hot water needs
  • Easy to mainain, easy-to-replace heating elements
  • A reliable hot water solutuion from EcoSmart
  • Selection Guide
  • Other models available
  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Name 18 kW Self-Modulating 3.5 GPM Electric Tankless Water Heater 27 kW Self-Modulating 5.3 GPM Electric Tankless Water Heater Performance 36 kw Self-Modulating 6 GPM Electric Tankless Water Heater 36 kW 240-Volt Self-Modulating 6 GPM Electric Tankless Water Heater
Brand EcoSmart EcoSmart Rheem EcoSmart
Ratings (142) (176) (6) (17)
Wattage (watts) 18000 27000 36000 36000
Certifications and Listings 1-UL Listed,CSA Listed,ETL Listed 1-UL Listed,CSA Listed,ETL Listed 1-UL Listed,CSA Certified,ETL Listed 1-UL Listed,CSA Certified,ETL Listed
Indoor/Outdoor Indoor Indoor Indoor Indoor
Water Heater Features Wall Mountable Wall Mountable Wall Mountable Wall Mountable
Flow Rate @ 45 F Rise (gallons/min) 2.73 4.10 5.46 5.46
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Customer Questions & Answers

I have 200 amp service. Is it big enough for the 27 kw

Asked by: Butch
I too have 200 amp home service. When I moved from a traditional tank type to this, I used the existing 40 amp space for my existing water heater and two additonal spots for the other two breakers. I have never had any electrical issues.
Answered by: hotwaterhome
Date published: 2017-05-03

Would this size do 2 showers , washing machine and dishwasher at same time

Asked by: Deborah
What h/w heater would? How long is the shower? Washing machine on cold, warm, hot, small, medium or large load? Too many variables for a logical answer.
Answered by: Rebel57
Date published: 2017-04-18

Can it be configured to show temperature in celsius?

Can it be configured to show temperature in celsius?
Asked by: IMV
Yes push and hold button for 3 secs
Answered by: Brent
Date published: 2017-03-20

Is the box grounded or I will have to install a separate ground wire ?

The city inspector is aking for a "ground" to the main breaker box
Asked by: Facer
Question for Taylor or anyone who can answer...is that the ground terminal bar just to the left of the hot terminal bar? (in the picture) Thanks. If so, will the ground terminal take #6 wire?
Answered by: QuickRick
Date published: 2017-03-20
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Customer Reviews

27 kW Self-Modulating 5.3 GPM Electric Tankless Water Heater is rated 4.0 out of 5 by 176.
Rated 5 out of 5 by from Love it, love it, love it! I have a Jacuzzi tub that fills faster than 5 GPM (plus 3 showers + a ... Love it, love it, love it! I have a Jacuzzi tub that fills faster than 5 GPM (plus 3 showers + a washing machine + a dish washer, etc.) so I've put two of these units in series (see photo), setting the first to 126 degrees and the second to 124 degrees so that the second is activated only when needed (quite rarely). For the first time since we've lived in our house, our kids and guests can shower or bathe in hot water ever after we've filled our Jacuzzi tub. Fabulous!!! Did I mention that this product has a lifetime warranty and has a super-small footprint. I've been replacing my way-too-big (80 gal), way-too-energy-hungry water heater every 8-12 years like clockwork (rather expensive). Now I think we're set for life!
Date published: 2016-12-27
Rated 5 out of 5 by from I'm not new to the TWH world. I've been using one for almost 20 years. However, the brand I had b... I'm not new to the TWH world. I've been using one for almost 20 years. However, the brand I had before was nowhere NEAR as well-made as this. During the 20 years I used that brand, I had to replace it FOUR times due to leaks. And, I had to replace the motherboard twice to to component failure. The Eco27 is simplicity itself. Not convoluted motherboards with a ton of components to burn out. The chambers are COPPER unlike the former brand I had which were plastic or resin. I did a LOT of research before I chose the Eco27. After I installed it (which was a piece of cake following the instructions), I was rather surprised to find how quickly it heated the water. My old unit had four elements and it didn't heat the water as fast as the Eco27 with three. These guys did it RIGHT. Be sure to use their sizing guide to determine which Ecosmart is right for you.
Date published: 2017-02-11
Rated 5 out of 5 by from I like this tankless unit gives endless showers . We have a family of 4 that likes to take long h... I like this tankless unit gives endless showers . We have a family of 4 that likes to take long hot showers. With our old 50gal after the 2nd or third shower water was cold not now. We live in northern Ohio so in the cold months it delvers the hottest showers if no other hot water is run at the same time. And if you run your bath water the slower you run the water the hotter it will be. And we save on our electricity bill as it does not have to keep water heating in the tank when we are not home, I self installed this unit myself using sharkbite connectors off the shelf . Did have to add 3 ( 40amp )breakers to my breaker box. There are good videos on youtube on Installation
Date published: 2017-02-14
Rated 5 out of 5 by from First off I live in Savannah, GA needless to say my ground water temp is probably mid 60's. At it... First off I live in Savannah, GA needless to say my ground water temp is probably mid 60's. At its coldest. I installed this unit myself in a day to include all Plumbing and electrical work. I did have to run new electrical 3 runs of 8/2 Romex, and 3ea. 40A dbl pole breakers. I'm extremely handy with home renovation work. Plumbing took about 10 minutes total as I located my new Tankless unit on a sub panel close to the old 50gal tank. I also used the SharkBite Tankless water heater installation valve kit to connect my 3/4" PEX water lines. My system has been installed and running flawlessly for about a week. There are 2 adults and 3 teenagers in my home and we haven't had our usual evening hot water issues at all. We do have to slow the flow down when filling our garden tubs but common sense ( and the directions ) tell you the unit cannot keep up running full bore on a 3/4 inch water supply at 55 PSI the water doesn't make contact with the heating elements long enough to properly heat. However, with the faucet 3/4 open the water is exactly at the 125°F that I set the EcoSmart27 to. Showers are awesome endless hot water so far we have ran 2 showers and several sinks at the same time with no noticeable loss of hot water. Yes, all sinks and showers have the factory water saver devices installed. I couldn't be happier with this unit. I have recommended this unit to all of my friends and family. On a side note If I had Natural Gas in my home I would have installed a Gas Tankless unit. The installation would have been a little simpler.
Date published: 2017-01-04
Rated 5 out of 5 by from I live with my wife and, at times, all 5 of my daughters ! Continuous HOT water is a requirement... I live with my wife and, at times, all 5 of my daughters ! Continuous HOT water is a requirement of a happy family life ! This unit easily provides ample hot water for everyone.
Date published: 2017-03-21
Rated 5 out of 5 by from Completely satisfied with this water heater installed as a whole-house unit (2,200 sq ft, two bat... Completely satisfied with this water heater installed as a whole-house unit (2,200 sq ft, two bath house). It is easy to adjust the temperature of the hot water being delivered by turning the dial on the front of the unit. Temperature of the hot water is displayed on a large LED. I would not recommend this as a do-it-yourself project because of the electrical work that must be properly completed. For your own safety, please hire professional help to install this.
Date published: 2017-01-11
Rated 5 out of 5 by from The EcoSmart 27 was a replacement of an older model Seisco RA-28 we installed 10+ years ago and i... The EcoSmart 27 was a replacement of an older model Seisco RA-28 we installed 10+ years ago and it started acting up and leaking. The newer tankless water heater we got is all in one unit chambers whereas the Seisco unit had plastic chambers bolted together. I'm very pleased with the EcoSmart heater and the installation (with the help of my plumber and electrician, only took a couple of hours. No leaks, compact and easy to install. Would recommend this to any family looking to conserve space in any house.
Date published: 2017-01-31
Rated 1 out of 5 by from I have a 1200 sq home two baths very compact space in Portland. This unit could not supply one sh... I have a 1200 sq home two baths very compact space in Portland. This unit could not supply one shower with hot water, warm water but not nice hot shower. Works ok at the sink when the flow rate is at half but absolute rubbish in the showers. So disappointed by this product. I read the charts and sized based off what should have been plenty for one shower in our house. If you live above SF size all the way up or stick with the tank. This cost close to $1,000 for unit and install and now we will have to spend more money getting plumbers and electrician out to replace it. Please feel what 105 degrees feels like that is the hottest water you will get.
Date published: 2017-01-27
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