Tankless Water Heater Electric 4500W Instant Hot Water Heater Under Sink, Point of Use Water Heaters with Digital Display for Kitchen Bathroom
Condition: Used - Very Good
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This item is eligible for return within 30 days of receipt
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Availability:
Only 7 left in stock, order soon!
Arrives
Thursday, May 14
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Style: 4KW
Features
- STRONG PERFORMANCE & IPX4 WATERPROOF: The instant water heater under sink is equipped with a powerful 4.5KW heating system, ensuring a consistent supply of hot water for your entire household. It features a standard 1/2-inch NPT interface and an IPX4 waterproof rating, resisting moisture and splashes for safe, stable operation in damp environments like bathrooms. Powerful and reliable for everyday use.
- SMART TOUCH TEMPERATURE CONTROL: Our instant hot water heater puts control at your fingertips with its intuitive, user-friendly digital touchscreen. You can easily set the temperature precisely between 86F - 131F (30C - 55C), meeting the different bathing needs of family members. The tankless water heater electric's screen displays the current water temperature in real time for added peace of mind.
- WALL-MOUNTED & SPACE-SAVING DESIGN: The on demand hot water heater electric adopts a wall-mounted installation, saving floor space and making it especially suitable for compact bathrooms and kitchens. Its lightweight and compact body features a simple, modern design. Professional installation by licensed electricians and plumbers is recommended to ensure safe and reliable operation.
- ALL-ROUND SAFETY PROTECTION: The instant hot water heater under sink features multiple safety protection mechanisms: leakage protection automatically cuts off power in case of abnormalities; over-temperature protection prevents excessively hot water by stopping heating when the outlet temperature exceeds 55C; freeze protection and dry burning prevention help extend the appliances service life.
- WIDE APPLICABILITY & INSTANT HEATING: Our electric tankless water heater is suitable for apartments, rental homes, and small commercial spaces such as hair salons. Whether its a small bathroom, kitchen, or a secondary water point, it provides a stable supply of hot water. This electric hot water heater delivers hot water instantlyno waiting neededready to meet your immediate hot water demands anytime.
Description
Tankless Water Heater Electric 4500W Instant Hot Water Heater Under Sink, Point of Use Water Heaters with Digital Display for Kitchen Bathroom,110V
Brand: Nessxa
Power Source: ac
Product Dimensions: 8.66"W x 13.97"H
Special Feature: Anti-Freezing Protection, Dry Combustion Protection, Leak Detection, Lightweight
Color: White
Power Source: ac
Special Features: Anti-Freezing Protection, Dry Combustion Protection, Leak Detection, Lightweight
Wattage: 4500 watts
Voltage: 120 Volts
Maximum Temperature: 131 Degrees Fahrenheit
Heat Output: 4500 Watts
Mount Type: Wall
Is Electric: Yes
Color: White
Style Name: 4KW
Item Dimensions W x H: 8.66"W x 13.97"H
Brand Name: Nessxa
Model Number: RE45K
Manufacturer: Nessxa
UPC: 631060185538
Manufacturer Part Number: RE45K
Included Components: Accessory Kit, Instant Water Heater, Instruction Manual
Unit Count: 1.0 Count
Item Type Name: 4.5KW water heater
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 14
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
Great little water heater! Heats up quickly and works perfectly under the sink for daily use. Compact, easy to install, and looks nice with the digital display. Best for point-of-use, not for the whole house. Good value for the pric
Reviewed in the United States on March 23, 2026 by Lisbet
Heats water quickly and works exactly as expected. Compact, easy to install, and the digital display is a nice touch. Great for under-sink use.
Reviewed in the United States on March 22, 2026 by Mr Smith
Worked great for about 2 months of very low usage, then it just completely died. Checked the Electrical and water set up to make sure it was the unit and it was. There's so many different ones available so don't get this one because when it dies you won't be able to return it.
Reviewed in the United States on March 22, 2026 by Sonoma C.
I installed this electric tankless water heater in my home and it has been working very well so far. The unit is compact, easy to mount on the wall, and the installation process was straightforward. For my setup, it provides hot water for two bathrooms without any issues. The water heats up quickly and maintains a stable temperature during normal use. I also like the digital display because it makes it easy to monitor the temperature. Overall, this is a great option if you are looking for a compact electric tankless heater for a small house, apartment, or a couple of bathrooms. Good performance and good value for the price.
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Reviewed in the United States on March 8, 2026 by Alberto Infante
This compact 4500W tankless water heater provides instant hot water right where you need it. Its under-sink design saves space, making it perfect for kitchens or bathrooms. The digital display makes temperature monitoring easy, and the point-of-use setup ensures quick and efficient heating without waiting for a full tank to warm up. A convenient solution for reliable hot water in small spaces.
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Reviewed in the United States on March 13, 2026 by Rene & Osnie
This product looks and feels and seems excellent and of the highest quality EXCEPT, this is NOT A PLUG AND PLAY unit. The unit comes with NO plug. Rather it comes with three wires with ends designed to ft into a dedicated circuit breaker. NONE of the reviews mention this leading me to doubt their validity. And, with the exception of one wiring diagram, I was unable to find anywhere in the product details that this is a requirement. So, if you are an electrician or if you have an already installed circuit breaker close by (the cord is about 1' long) or you don't mind spending another $200 (or whatever) to hire an electrician, this might not be the unit for you. I hope this helps and I regret the misleading info. I really wanted to install this in minutes and love the hot water. Alas, back to the drawing board.
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Reviewed in the United States on February 5, 2026 by peter sherman
This tankless water heater works great and heats water instantly. I love the digital display and how easy it is to adjust the temperature. Itβs perfect for my kitchen and saves time every day. Compact, efficient, and very reliable so far. Highly recommend!
Reviewed in the United States on March 25, 2026 by Yuriska Riquenes
Very poor construction and felt cheap!
Reviewed in the United States on March 10, 2026 by Eric Carr