Search  for anything...

Tankless Water Heater Electric 3.5KW 110~120V, Designed to Provide Hot Water on Demand Without the Need for a Storage Tank, Use a Self - Adjusting Rotatable Digital Display Silver ETL

  • Based on 166 reviews
Condition: New
Checking for the best price...
$89.99 Why this price?
Save $30.00 was $119.99

Buy Now, Pay Later


As low as $15.00 / 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, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. 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 is eligible for return within 30 days of receipt

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: Only 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Sunday, Aug 17
Order within 20 hours and 11 seconds
Available payment plans shown during checkout

Color: Silver


Style: KFU135 (3.5kW)


Features

  • Endless Hot Water- WINTEMP Tankless Water Heater Electric - KFU135 Applied with 3500W 120 V heating system, It provides an endless supply of hot water in a short time,Instant hot water at 73F is available in seconds. no need to wait for preheat nor to worry about the temperature variation. It is perfect companion for sinks, Bring you the perfect experience of comfortable home.(Not applicable: Areas with an incoming water temperature below 60F)
  • Save Energy- WINTEMP The hot water heater adjusts power input based on flow rate and temp setting in real time. Less power will be applied by the system when waterflow reduced, so that energy saving up to 99%, which can help you save a lot of heating costs. Unlike a tank heater, it maintains water temperature even when not being used.
  • Easy to Install- The portable water heater has a mini body, It can be tuned upside down with a horizontal and vertical tilt, and can be installed anywhere. You will need to have access to 120 volts, 1 set of 30-amp circuit breakers, and 10AWG wires. Size: 9" x2.6" x 8.5", Standard 1/2 interface(inflow or outflow), can be directly connected to household conventional hose connectors.
  • Safe to Use- There is overheat protection, dry-heating protection, electricity leakage protection function, which can ensure your safety. Safety Certified: Approval by ETL and Qualifies for UL. Included Components: 1.Water Heater 2.Rubber plug and screw 3.Operation and Installation instructions 4.equipped with external power cord, easy for power connection. Note: Does not come with a plug.
  • WINTEMP Support- If you encounter any issues during the usage, you can follow these steps: order--Seller--answer your question.2-year warranty period.

Brand: WINTEMP


Product Dimensions: 8.5"W x 9"H


Color: Silver


Wattage: 3500 watts


Brand: ‎WINTEMP


Product Dimensions: ‎8.5"W x 9"H


Color: ‎Silver


Wattage: ‎3500 watts


Voltage: ‎120 Volts


Maximum Flow Rate: ‎1.2 Gallons Per Minute


Maximum Temperature: ‎121 Degrees Fahrenheit


Heat Output: ‎120 Volts (AC)


Efficiency: ‎High Efficiency


Mounting Type: ‎Wall


Is Electric: ‎Yes


Manufacturer: ‎WINTEMP


Item Depth: ‎2.6


Part Number: ‎KFU135


Item Weight: ‎4.8 pounds


Country of Origin: ‎China


Item model number: ‎KFU135 (3.5kW)


Installation Method: ‎fixed setting


Item Package Quantity: ‎1


Usage: ‎kitchen


Included Components: ‎Operation and Installation instructions, Rubber plug and screw, equipped with external power cord, ‎Water Heater


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎1year


Date First Available: August 15, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 17

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


  • Check, check, double check. Expensive install. But "Great customer service from Wintemp".
Color: Silver Style: KFU135 (3.5kW)
We got the lowest voltage unit but it still needs a 30-amp GFI breaker. So we got an electrican to do the electric upgrade and we did the water lines ourselves. The electric upgrade was $285.00 for labor and $100.00 for a 30-amp GFI breaker from Amazon. So all in was $500.00 and at this time, 30 days into this, the system has only been installed 36 hours and the water temperature is only luke warm, Wintemp won't answer anything but an email (Back to the drawing board..). Just discovered that the new plug that was installed for the 30 amp GFI outlet needed adjusting. The prongs on the plug were misaligned and not fitting together within the outlet. Simple fix so far. Our heaters working perfectly..!! Waited for the water to heat and because of our michigan cold weather this heater won't heat our water above Luke warm and the next model up requires a $7 to $800.00 upgrade to our electric panel so it's alot more to this system than buying it and plugging it in. 2/28/2025 update. I just received an email from Wintemp for the second time. The first time was for a free upgrade to a unit that would handle our cold Michigan water and the second is for a full refund. Great customer service from Wintemp..!! ... show more
Reviewed in the United States on February 9, 2025 by Metro Detroiter's

  • Small and mighty
Color: Silver Style: KFU135 (3.5kW)
Very good product, very happy with this purchase. Really useful, easy to install and so far it has given us all the hot water we need. It does its job perfectly. Very convenient.
Reviewed in the United States on May 25, 2025 by Emmanuel Moore

  • Worst water heater evre
Color: Silver Style: KFU135 (3.5kW)
This unit heated water at the rate of ongoing gallon in 3 minutes 25 seconds to a temp of 100 degrees. This is a pencil lead sized stream. Not even enough to wash your hands. On the up side it was easy to install. Now I will reverse that and put back my 2 gallon electric tank water heater. I'm very disappointed with this unit. ... show more
Reviewed in the United States on December 22, 2024 by Amazon Customer

  • Useless (Update) OK
Color: Silver Style: KFU135 (3.5kW)
Done everything to get this system to put out hot water. Adjusted the temperature to 130 and got a shot of warm water then it went back to 65 degree. SMH. After a great experience with the seller and their representatives it is understood that the product indeed is not faulty it’s just designed for a warmer region. Following that, they compensated me for my troubles. This type of service is difficult to find. Recommend getting a better understanding of how theses instant hot units work in your area. ... show more
Reviewed in the United States on November 30, 2023 by Gavin E. Wainwright Sr.

  • Really good product well pleased with the purchase.
Color: Silver Style: KFU135 (3.5kW)
This is awesome! The installation was unbelievably fast. This is very convenient. I am very happy with this product. The water temperature is great and the installation is easy, just what I needed. Quick installation!!! This was even better than I expected. Great choice Exceeded my expectations. Really easy to use. The water temperature is perfect! Easy installation. ... show more
Reviewed in the United States on May 19, 2025 by creg

  • Nice
Color: Silver Style: KFU135 (3.5kW)
Worked perfect for me
Reviewed in the United States on July 6, 2025 by Hisham Salama

  • Ok heater
Color: Silver Style: KFU135 (3.5kW)
This water heater is nice when you have a slow flow of water. It won't be good for a shower, but good for washing hands. I used it in my mobile grooming bus and just did slow streams when I washed and rinsed pups. It only lasted 5 months before it stopped working.
Reviewed in the United States on April 3, 2025 by Jasmine

  • Has Trouble Keeping Up
Color: Silver Style: KFU135 (3.5kW)
Got this water heater to install in a skoolie renovation project - meant to give hot water to a sink and shower. The water definitely gets hot, but it doesn't stay hot for very long. I found you could get a solid few minutes of hot water, and after that it would quickly turn cold. If you turn the water on to be barely a trickle you can make it last longer, but that doesn't make for a very quality shower experience. If all you need is lukewarm water (or don't have very strong water pressure) this will for sure do the job for you. Otherwise, I'd probably look elsewhere and invest in one of the more expensive options. ... show more
Reviewed in the United States on November 20, 2024 by Zero Surico

Can't find a product?

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