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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 164 reviews
Condition: New
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Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon

Arrives Monday, Jun 9
Order within 21 hours and 9 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: Energy and Space Saving


Color: Starry sky gray


Wattage: 27 KW


Brand: ‎Ranein


Product Dimensions: ‎13.8"W x 18.7"H


Special Feature: ‎Energy and Space Saving


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


Maximum 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: ‎Energy and Space Saving


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: Monday, Jun 9

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


  • Ranein Electric Tankless Water Heater
Style: 27 kW
We had to replace our tankless electric water heater in December 2024. After checking various sources that carried these types of water heaters, we asked our nephew if he would help us install a new one when we purchased one. He immediately recommended we get a Ranein. He had recently installed one of these for a friend and was very impressed with the Ranein water heater he had installed. Once we received the water heater, my husband and nephew replaced our old tankless with the new one. The installation went smoothly and quickly. We love that this electric tankless water heater has a digital readout of the temperature which our first one did not. That is a very good feature and it is also easy to adjust the temperature if needed. We would highly recommend this water heater as it saves space and it also saves on electricity which saves us money. ... show more
Reviewed in the United States on February 1, 2025 by Karen J Baker

  • Small and compact
Style: 18 kW
Had my plumber install . I have only had it hit a week but so far do good . It’s really nice that it doesn’t take ip much space . The hot water comes very fast and it’s nice you can adjust temperature control and see it digitally .
Reviewed in the United States on March 12, 2025 by janette wilson

  • Works great and easy installation!
Style: 18 kW
I’m on well water and during winter months my incoming water gets so cold that it overwhelms my hot water tank. I installed this water heater on the front side of my water tank so now I have endless hot water! Works great and easy to install
Reviewed in the United States on February 15, 2025 by Joe Joe

  • Started great, now I'm outside wet and cold.
Style: 18 kW
Update: it trips everyday now. Looking for a new one. So I've had this a few months. Had it professional replaced. No issues for the first couple weeks. Get really hot and seemed to be working fine. However it started tripping the breaker soon after that, totally at random. Sometimes a week, sometime a couple times a week, and sometimes within an hour. This is a lower wattage than the Rheem I replaced, so it can't be the breaker. Last night I was mid lather, covered in soap, it trips.... In the middle of winter. I had to leave the shower in a towel, so outside to flip the breaker so I could rinse off. Thought this was a good replacement, however I'm now thinking I have to replace it. I've had no issues beside the breaker tripping, flow rate, and temp have been great. Just wish it would stop tripping the breaker. ... show more
Reviewed in the United States on January 29, 2025 by LunchBox_Elrod

  • Works very well & dependable
Style: 27 kW
It was everything I hoped for & more. The hot water is more dependable to be hot than the hot water tanks I have had previously. It was a good investment for me!
Reviewed in the United States on January 28, 2025 by Rhea O.

  • Water flow, error code list, and sizing of your home lines.
Style: 18 kW
As far as installing it’s a breeze. The directions that come with the unit explain as well as show the wiring diagram. The only issue that I had after installing the unit and getting it plumbed up was the flow of water. The unit I purchased is very well large enough at 7gpm (replaced 50gal tank) but after several days of trail and error and not being able to get hot water to my shower or soaking tub and getting a code that I had to google I figured out that the hot water line coming from the tank unit to the shower needed to be upgraded from a 1/2” per line to a 3/4” per line to allow more flow from the unit to the shower and tub itself. Had hot water to every other faucet in the house except these 2 but now we have constant hot water and never have to worry about it getting cold anymore. I recommend that it should specify certain things in the installation instructions along with a code list just in case something goes wrong. Other than that we absolutely love this unit! ... show more
Reviewed in the United States on January 15, 2025 by Robbie Bickford

  • Easy to install. Great product.
Style: 18 kW
The media could not be loaded. The tankless electric water heater is a great product. It was easy to install and it worked great. The temperature control is easy. Excellent choice. We can recommend it.
Reviewed in the United States on February 25, 2025 by Franzi Franzi

  • 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

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