Search  for anything...

Electric Tankless Water Heater,240V Electric Water Heater,18kW Tankless Water Heater,Instant Water Heater for Shower with LED Display,Self Modulates to Save Energy Use,Black

  • Based on 75 reviews
Condition: New
Checking for the best price...
$189.99 Why this price?
Holiday Deal · 9% off was $209.00

Buy Now, Pay Later


As low as $31.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by ELEISIOS

Arrives Wednesday, Dec 3
Order within 4 hours and 38 minutes
Available payment plans shown during checkout

Style: ES-18KW(Ver.B)


Features

  • Endless Hot WaterPowered by an 18kW heating element, this tankless electric water heater can rapidly heat up water to your preferred temperature in a matter of seconds. This eliminates the long waiting times associated with traditional storage-type water heaters, allowing you to enjoy a steady, uninterrupted flow of hot water whenever you need it.
  • Intelligent Control SystemThis electric tankless water heater features an advanced control system that continuously monitors the water temperature and flow rate. It dynamically adjusts the heating power to match the current temperature and flow demands, ensuring a consistent water temperature and minimizing energy waste. The intelligent controls prevent drastic temperature fluctuations, providing a smooth, comfortable hot water experience.
  • Easy OperationThis water heater is simple to use. Just turn on the power switch and adjust the temperature using the "+" and "-" buttons to set your preferred water temperature. The water heater will then automatically heat the water to the specified temperature.
  • LED DisplayThis electric water heater features an LED display that shows the current flow rate, power status, and operation status of the heater. The LED display allows users to easily monitor the status of the tankless water heater.
  • Safety FeaturesThis tankless hot water heater is ETL certified and energy-efficient. Designed for the 240V voltage common in the US, it includes safety features like overheat protection, high/low pressure safeguards, and leakage protection. For proper and safe installation, it's recommended to have a licensed plumber and electrician set up the electric water heater, and to carefully review the product manual before proceeding.
  • Attention: Make sure this water heater is the correct size for your hot water needs: 18kW at 240V draw max 75amp; Required breaker 2 x Double-POLE 40AMP; Wire gauge 2 x 8AWG; Unit size 17.3" (H) x 12.3" (W) x 3.5" (D); Water connection 3/4" NPT.

Brand: ELEISIOS


Product Dimensions: 12.3"W x 17.3"H


Color: White


Wattage: 18 KW


Voltage: 240 Volts (AC)


Brand: ‎ELEISIOS


Product Dimensions: ‎12.3"W x 17.3"H


Color: ‎White


Wattage: ‎18 KW


Voltage: ‎240 Volts (AC)


Efficiency: ‎Energy-efficient


Mounting Type: ‎Wall


Is Electric: ‎Yes


Manufacturer: ‎ELEISIOS


Item Depth: ‎3.5 inches


Item Weight: ‎18.16 pounds


Item model number: ‎KF440016-01


Included Components: ‎Water Heater Electric


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: June 7, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 3

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • THIS IS THE FUTURE OF HOT WATER
Style: ES-18KW(Ver.B)
This is such a killer water heater!!! Tiny, easy to install, gets water hot AF. Affordable and makes more than enough hot water for a 3 person household.
Reviewed in the United States on June 25, 2025 by Bee Gee 313

  • Works perfect for me.
Small two bedroom one bath house and I am the only occupant. Propane water heater costing me wasted money on heated water I never used. Upstate New York. Very cold water even in the summer as I’m only living here April through November. I had set my water pressure at 70 psi and this tankless water heater was not working properly. Reset my water pressure at 48 psi now it works perfect. I can now take a shower with 115° heated water for as long as I want. I had room on my electrical 150 amp panel as I am using a propane clothes dryer. Two pole 40 amp breaker worked perfect. If you have a small residence with up to three occupants, this unit would probably suit your needs. ... show more
Reviewed in the United States on July 24, 2025 by kurt s. kurt s.

  • Works great, and it’s not expensive
It’s easy to install and works great. Especially appreciate the temperature display and the ease of changing the temperature.
Reviewed in the United States on June 8, 2025 by Jekchicago

  • Good quality easy installation product is exactly what it said it was
Style: ES-18KW(Ver.A)
I needed the hot water heater for an RV and it's excellent it's more than we expected quality 100% delivery service 100% easy installation the water temperature is awesome very functionable small compact design great for the money the design and idea is awesome no problem with leakage or anything my family is very satisfied 100% ... show more
Reviewed in the United States on January 11, 2025 by M e r i Vinzant my husband loves loves loves the product the bolts the tips everything is wonderful he's adamant bowhunter it has large following he is showed them almost like a Tupperware party

  • Well made, easy to install
Style: ES-9KW(Ver.A)
Update: We have been using this water heater for over a month now and are still very pleased with it. Water is always hot, and our electric bills are even much lower. We installed this to provide hot water for a one bedroom “tiny house”. It was easy for my husband to install and the included directions were simple to follow. The heater attached to the wall under the kitchen cabinet, and with the low profile it fit perfect. There is no issue running hot water in the kitchen sink, with someone in the shower. I’m thrilled with my purchase and its capacity, to provide enough hot water for our needs. ... show more
Reviewed in the United States on September 2, 2024 by Amazon4Me Amazon4Me

  • The first one was no good.
Style: ES-9KW(Ver.A)
used it once then I noticed the water smelled like burnt hair. it stopped working. the replacement has arrived and I'm waiting for it to be installed so I'll update this once it's working I do love the space it saved! I had a huge 40G tank thst took up so much space in my tiny home. now this thing is mounted behind my washing machine. ... show more
Reviewed in the United States on January 2, 2025 by Frank

  • Product price is well & so is how fast u get HOT water
Style: ES-9KW(Ver.A)
It works excellent.
Reviewed in the United States on July 16, 2025 by julie drye

  • Inconsistent Temperature
Style: ES-18KW(Ver.A)
Easy to install and adjust. However, the temperature of hot water fluctuates quite a bit. It has trouble modulating to the exact temperature and seems to varies 7 degrees. It’s unable to maintain an exact temperature. Really frustrating when taking a shower
Reviewed in the United States on December 11, 2024 by Laurena Blakeman

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...