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110V Tankless Water Heater Electric, 3000W Compact Water Heater Under Sink

  • Based on 111 reviews
Condition: Used - Like New
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Style: 3000W 110V


Features

  • Compact Design: ECOTINYMACH's tankless water heater is designed with a compact footprint, offering an efficient solution for heating water without consuming unnecessary space.
  • Convertible Temperature Scale: Unique feature of our heater allows you to switch between Fahrenheit and Celsius temperature scales conveniently, enabling you to monitor the water temperature in a scale that suits you best.
  • Easy Installation: Designed with simplicity in mind, our tankless water heater can be installed quickly and easily, saving you time and effort.
  • Electric and Energy Efficient: Being electric and tankless, this water heater from ECOTINYMACH is not only efficient but also environmentally friendly, helping you save on your energy bills and reduce your carbon footprint.
  • Installation instructions: Circuit breaker 32AMP, thread size: 1/2 "NPT, wire requires 2.5mm 2 (13AWG),

Brand: ECOTINYMACH


Power Source: Corded Electric


Efficiency: Energy Efficient


Mounting Type: Wall


Is Electric: Yes


Brand: ‎ECOTINYMACH


Power Source: ‎Corded Electric


Efficiency: ‎Energy Efficient


Mounting Type: ‎Wall


Is Electric: ‎Yes


Manufacturer: ‎ECOTINYMACH


Item Weight: ‎2.4 pounds


Product Dimensions: ‎4.53 x 2.36 x 7.87 inches


Item model number: ‎XY-FB


Batteries Included?: ‎No


Date First Available: July 16, 2025


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

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


  • Compact, efficient, and works perfectly!
I’m very happy with this water heater! It’s small enough to fit under the sink without taking up much space, and the installation was simple. The digital temperature display is clear, and I love that it can be switched between Celsius and Fahrenheit. It heats water quickly and keeps the temperature steady — perfect for hand washing, small sinks, or compact spaces. For the price, it’s an excellent value. Highly recommend for anyone needing an efficient under-sink water heating solution! I bought this for a sink in a separate room outside my main house, and it works great. Just keep in mind that you need a 33-amp breaker for it to work properly. ... show more
Reviewed in the United States on August 11, 2025 by Ariadna

  • Waste of money
Heats up to 129 degrees Fahrenheit, but soon as you open the hot water valve the temperature drops down to 68 and won’t warm up any while the water is running
Reviewed in the United States on September 4, 2025 by Kyle

  • Compact and Efficient Tankless Water Heater
I recently purchased the 110V Tankless Water Heater, and I couldn't be happier with my decision! . The compact design fits under my sink without taking up too much room, and it heats water like a champ! It was super easy to install. I had it up and running in no time. A quick note for everyone considering this 110V version—make sure you have a 32 amp outlet available! It’s an important detail that I want to highlight so you don't run into any surprises during installation. Overall, I highly recommend this water heater for anyone looking for an efficient and effective solution for instant hot water. It's affordable, functional, and environmentally friendly. ... show more
Reviewed in the United States on August 4, 2025 by Roger Nichols

  • Great for my RV
Love it! World great just don't turn the water on full blast. Easy to install, hot water yes, small yes, no leaks and just plugs into a normal outlet. The only improvement would be longer electric cord and a mounting bracket. Quality of the unit really nice and no extra wires.
Reviewed in the United States on October 15, 2025 by Georgia Sebring

  • Heats up fast and takes up little space
It works well to use the spot under the sink. Heats up fast and maintains a stable temperature. The size is compact, and the installation was easy. Complies with what we expected for everyday tasks such as washing hands or a light meal.
Reviewed in the United States on August 11, 2025 by Mary Mary

  • Good for slow running water
I attached this straight to my shower line and it gets the water at 80f to about 110f, this is good for what i need it for but just know at faster water flow it doesn't do a good job.
Reviewed in the United States on November 28, 2025 by David L.

  • Garbage
Garbage. The threads on both sides were a mess. No rubber washers. Then after going to Home Depot 10 times to get it to not leak, the damn thing wouldn't even turn on. It had turned on earlier while fighting the leaking but then nothing! There are many water heaters at this price point. You should definitely find another one if considering purchasing this product. ... show more
Reviewed in the United States on October 22, 2025 by Jamie

  • Works, but not good for wells or cold water input
It turned right on and started heating. But you need a very precise combination of pressure and flow for it to hold temperature. If you are on a well (with fluctuating incoming pressure) this is basically not possible to calibrate. Also, the incoming water needs to be relatively room-temperature in order to get hot water. With cold well water incoming, even at peak performance I could only get to 99-101 F for short periods. This may work if you have: City water with very strong and consistent pressure A low-flow faucet Room temperature incoming water ... show more
Reviewed in the United States on August 27, 2025 by Tim Roy

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