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Electric Tankless Water Heater, 27kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving

  • Based on 114 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Sep 2
Order within 14 hours and 13 minutes
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Style: 27 kW


Features

  • NOTE: Make sure this water heater tankless is sized for your hot water needs: 27 kW; 240 volts; circuit breaker required 3 x bipolar 40 amps; unit dimensions 13.8" x 3.1" x 18.7"; water connection 3/4" NPT.
  • SAVE: A 27kW electric tankless water heater doesn't require preheating compared to tank-type water heaters. There's no energy consumption when not in use. It saves 60% of heating costs. Additionally, it's more compact and can be installed anywhere.
  • POWERFUL: This electric water heater's on-demand thermal efficiency reaches up to 99%. With a flow rate of up to 6.5GPM, it's suitable for 2-4 usage points throughout the house. There is no waiting for preheating. It provides endless, ample hot water.
  • SIMPLE: The endless hot water heater electric features knob controls and an LED display. With an adjustment range from 86F to 131F in 1F increments, you set the temperature and enjoy stable and ample hot water.
  • SAFE: The instant electric tankless water heater is protected by multiple features, such as leakage protection, overheating protection, drop test, and damp proof; every unit goes through strict tests to ensure 100% safety, and it is listed by CSA.

Brand: Ranein


Product Dimensions: 13.8"W x 18.7"H


Special Feature: LED Display


Color: Starry sky gray


Wattage: 27 KW


Brand: ‎Ranein


Product Dimensions: ‎13.8"W x 18.7"H


Special Feature: ‎LED Display


Color: ‎Starry sky gray


Wattage: ‎27 KW


Voltage: ‎240 Volts (AC)


Maximum Temperature: ‎131 Degrees Fahrenheit


Heat Output: ‎27000 Watts


Efficiency: ‎99.8%


Maximum Operating Pressure: ‎130 Pound per Square Inch


Mounting Type: ‎Wall


Is Electric: ‎Yes


Manufacturer: ‎Ranein


Part Number: ‎RE27K


Item Weight: ‎17.41 pounds


Country of Origin: ‎China


Item model number: ‎RE27K


Special Features: ‎LED Display


Included Components: ‎Water Heater x1, User Manual x1, Installation Template x1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: September 11, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 2

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.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • I was a skeptical!! works wonders
Style: 18 kW
I was skeptical at first what the water heater really works,
Reviewed in the United States on July 10, 2025 by Ricardo

  • excellent
Style: 18 kW
I have a small condo and have gone thru 2 water tanks in the last 10 years. When my last one leaked I decided to go tankless. I called my friendly handyman and he recommended this one. I ordered and he installed. I love It!. It was easy to install (per his feedback) and it has so far been an excellent choice. I always have plenty of hot water (just me living here) it has allowed me to control the water temperature and has given me additional space from that ugly cumbersome tank that I had grown to hate. I am saving money on my electric bill (not huge but it all counts) and the cost to install was much less than buying another tank. All in all I highly recommend this unit to anyone that is considering a tankless unit. It is a 5 Star PLUS. ... show more
Reviewed in the United States on August 22, 2024 by SusanB

  • Works great and well priced!
Style: 18 kW
The media could not be loaded. **Edit** I’ve had and been using this for a few months now. Just a warning that it will sometimes randomly jump up to a higher temperature before throwing an error code. Twice now I’ve been washing my hands and it’s jumped to 152 and burned me before throwing an error code. Once I turn the hot water off, the error code goes away. This was a great value for the cost. It heats up quickly, is easily adjustable, and can be turned off when not in use. It’s got a pretty low profile and looks nice. It takes 2, 40amp breakers and the install was easy. The instructions were horrible though. ... show more
Reviewed in the United States on June 7, 2024 by rixsrs rixsrs

  • No longer happy.
Style: 18 kW
Installation took awhile because of differences in old fashioned 40 gallon water heater to the more modern wiring. We Had to install an outside breaker Box to accommodate the increase in size of the voltage breakers and the wiring itself also had to be increased in gauge. However the changes where not a hindrance and the unit is working well so far.By now several weeks have gone and the unit is no longer working properly. When I turn on the water it takes 10 min. to get warm water, after several more min it finally gets hot enough to shower as you have shaped up good (4_5 min) the hot water goes completely off, Am not thrilled to be taking a shower at the age of 82 in cold water. I received no invoice is method of registering a warrantee nor do I have serial number. This to notify you that the unit will be returned to the seller if you can not provide service. ... show more
Reviewed in the United States on October 31, 2024 by Kindle Customer

  • The price was verry good best I could find.
Style: 27 kW
it was wasy to install and works great for us . There are only 2 of us and we have more than enough hot water.
Reviewed in the United States on August 20, 2024 by sylvia fosnaugh

  • Awesome water heater!
Style: 18 kW
The media could not be loaded. Replaced a 40 gallon electric water heater with this awesome space saver tankless. Easy to operate. Works as intended. Water gets hot fast! Great price! Highly recommend.
Reviewed in the United States on November 7, 2024 by A Jenkins

  • Surprised!
Style: 18 kW
The media could not be loaded. I have had this unit installed for about 6 months now and its worked out well so far. The on demand water is fast and stays constant. There can be a sudden rush of heat when initially turning it on but that goes away quickly. Something you get used to by opening the hot water a bit more slowly. Pressure is good. I'm using this to heat 3 sinks and a shower. It is also connected to the tub faucet but I would recommend the lager 27kW version to keep up with the flow for a tub. I have to restrict the flow to keep the water hot when filling the tub but that is to be expected with the GPM rating of this unit and I did not want to dedicate 3 double pole spots in the breaker box. I did initially have an issue with an overheating error code popping up a few times but it went away and has been working great so far ever since. ... show more
Reviewed in the United States on June 30, 2024 by Major Doodle Major Doodle

  • LOVED THIS! Such easy installation!
Style: 18 kW
This tankless electric water heater is fantastic! It provides instant, endless hot water and has significantly reduced my energy bills. The installation was easy, and the compact design saves space. The digital temperature control is user-friendly. Highly recommend it!!
Reviewed in the United States on August 23, 2024 by Joe Joseph

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