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
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
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.
Arrives
Wednesday, Dec 3
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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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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
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.
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Reviewed in the United States on July 24, 2025 by kurt s. kurt s.
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
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%
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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
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.
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Reviewed in the United States on September 2, 2024 by Amazon4Me Amazon4Me
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.
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Reviewed in the United States on January 2, 2025 by Frank
Style: ES-9KW(Ver.A)
It works excellent.
Reviewed in the United States on July 16, 2025 by julie drye
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