Tank Water Heater 4 Gallon, 110-120V 1440W Under Sink Electric Hot Water Heater, Small Point of Use for RV, Kitchen, Bathroom, Food Truck (Wall/Floor Mounted)
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Availability:
Only 2 left in stock, order soon!
Arrives
Tuesday, Jun 2
Features
- [Instant Hot Water on Demand] - 1-2 second rapid heating. This 4-gallon mini tank water heater eliminates long waits for hot water at kitchen sinks or in RVs. No more wasting cold water while waitingit delivers steady hot water for handwashing, dishwashing, or daily RV use, perfectly matching small-space hot water needs.
- [120V 1440W Energy Efficient] - Heats water to 86-167F (customizable temperature). Polyurethane insulation locks in heat longer to reduce energy waste. Ideal for off-grid food truck use, it operates on low voltage without compromising performance, effectively cutting down utility costs.
- [Compact & Easy to Install] - Measuring 14.9614.9612.8 inches, this undersink water heater supports wall or floor mounting with no complex plumbing required. It fits seamlessly in tight spaces like camping trailers, apartments, or RV cabinets, saving valuable room while being easy to set up.
- [IPX4 Waterproof & Multi-Safety] - Featuring anti-leak protection, overheat safeguards, and a 150psi pressure relief valve, this RV wet-environment water heater boasts IPX4 waterproofing. Safe for bathrooms, RVs, or damp garages, it eliminates safety hazards for worry-free operation.
- [Wide Application] - The perfect point-of-use water heater for RVs, kitchens, food trucks, garages, and camping. Whether for daily home use, off-grid travel, or outdoor activities, it meets all on-demand hot water needs for cleaning, cooking, or personal care.
- [Package Includes] - 4 Gallon water heaters 1, Bracket 1, Plastic expansion tube 2, T/P valve 1, fastening screw 2, user manual 1. Comes with basic accessories and installation instructions, you can start installation right out of the box. Supports safer and more stable wall mounting
Brand: TODANGAI
Capacity: 4 Gallons
Power Source: ac
Product Dimensions: 14.96"W x 12.8"H
Special Feature: Leak Detection, Lightweight, Overheat Protection, Pressure Release Valve
Power Source: ac
Special Features: Leak Detection, Lightweight, Overheat Protection, Pressure Release Valve
Wattage: 1440 watts
Voltage: 120 Volts
Maximum Temperature: 167 Degrees Fahrenheit
Heat Output: 1440 Watts
Efficiency: High Efficiency
Maximum Pressure: 150 Pound per Square Inch
Mount Type: Wall or Floor Mounted
Is Electric: Yes
Color: White
Style Name: Compact
Material Type: Acrylonitrile Butadiene Styrene
Brand Name: TODANGAI
Model Number: TO-HWTK2.5Ga-2411
Manufacturer: TODANGAI
Included Components: 4 Gallon Water Heater, T/P Valve, User Manual, Wall Mounting Kit
Capacity: 4 Gallons
Item Dimensions W x H: 14.96"W x 12.8"H
Item Weight: 22.5 Pounds
Item Depth: 12.8 inch
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jun 2
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
Once the water heats up, you'll have plenty of time to take a nice hot shower.
Reviewed in the United States on April 17, 2026 by Charles G.
So good so far! 2 days since install. No leaks. Pretty easy to install, but tight under rv sink. Not much room to maneuver it around underneath. But it works good. And is enough for what I need .
Reviewed in the United States on February 4, 2026 by Kindle Customer
I am so impressed with the technology that means this machine is possible. I was looking for a temporary solution to my large gas hot water heater going out, as I couldn't afford to replace it just yet, but I needed hot water to hand wash my dishes. I installed this under my kitchen sink and I am really impressed. When I'm done with it in the kitchen I'm excited to move it out to the barn to heat water for cleaning etc. It is so simple to install and 4 gallons is a good amount of water, and I would estimate it reheating new water in about 30 minutes or less after it's been used. I haven't been disappointed.
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Reviewed in the United States on April 2, 2026 by Dr. DWC
The water heater is perfect for efficiency and delivers hot water quickly to the kitchen sink. I needed something small and effective for the off grid solar system we are using in our new house. Heating a large tank halfway across the house and waiting for the hot water to reach the sink is a waste of energy, this little heater is the ideal alternative to all that waste. It was easy to install, easy to use, works as expected, heats quickly and delivers plenty of hot water for use at the kitchen sink. I feel like this sink delivers the luxury of almost instant hot water that I've never had in any home. I don't know why every home isn't equipt with this type of valuable feature.
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Reviewed in the United States on November 14, 2025 by AMaeS
The TODANGAI 4 Gallon Electric Tank Hot Water Heater is designed for point-of-use applications, making it suitable for kitchens, RVs, food trucks, and other settings where hot water is needed quickly and efficiently. Here’s a detailed review based on its features and performance: Design and Build Quality Compact Size: With a 4-gallon capacity, this mini water heater is compact and can easily fit under sinks or in tight spaces, making it ideal for small kitchens or mobile applications like RVs and food trucks. Mounting Options: The unit can be floor or wall-mounted, providing flexibility in installation based on the available space and user preferences. Performance Heating Power: Operating at 120V and 1440W, this water heater heats water quickly, providing on-demand hot water. Users can expect a steady supply of hot water for various tasks, such as washing dishes or food preparation. Point of Use: Being a point-of-use heater means it delivers hot water directly where it is needed, reducing wait times and minimizing water waste compared to traditional tank heaters. Safety Features IPX4 Waterproof Rating: The IPX4 rating indicates that the unit is protected against splashes of water from any direction, making it suitable for use in kitchens and other areas where moisture is present. Built-in Safety Mechanisms: The heater includes safety features such as over-temperature protection and a pressure relief valve, ensuring safe operation during use. Energy Efficiency On-Demand Heating: Since it heats water only when needed, this unit can be more energy-efficient compared to larger tank heaters that continuously maintain water temperature. This feature can lead to lower energy bills over time. Ease of Use User-Friendly Controls: The heater is designed for easy operation, featuring simple controls for adjusting the temperature settings. This makes it accessible for users of all experience levels. Installation: The compact design and mounting options facilitate straightforward installation, whether in a permanent location or a mobile setup. Conclusion The TODANGAI 4 Gallon Electric Tank Hot Water Heater is an excellent choice for those needing a reliable and efficient source of hot water in compact spaces. Its quick heating capabilities, safety features, and flexible installation options make it suitable for various applications, including RVs, kitchens, and food trucks. With its energy-efficient design and user-friendly operation, this mini water heater provides great value for users looking for on-demand hot water solutions.
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Reviewed in the United States on June 4, 2025 by Fred Bloggs
This is a super nice under the sink water heater. I have been looking for something like this for a while for our garage. It is a ways out from the house and it takes forever for the water to heat up so I thought we would install this. This came very well packed and secured and everything was perfectly as described in the ad. Nothing was missing or damage from delivery and everything was very heavy duty and well made. My husband is very familiar with doing stuff like this he said it was very easy and straightforward to install As Long as You Follow the directions. It matched up perfectly with the measurements on the ad so it fit exactly in the space we had for it under the sink. Just be sure you before you get it that you go over all the measurements as well just to be sure it would be a good fit for you. As long as you do that everything works soundly and it's exactly as it should be. There are no leaks whatsoever and everything functions perfectly as intended. It's a game changer to have instant hot water out there and we have not had a single issue with this tank. Definitely worth every penny and our opinion in quality alone it's very heavy duty it does have some weight to it but it's not too heavy that you cannot get it set up. Definitely a 10 out of 10 great value for your money
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Reviewed in the United States on June 13, 2025 by Jessalyn D
This compact water heater is perfect for under the kitchen sink. Our house is from the 1920's and even plumbers can't figure out how the water flows through the pipes. But I do know it takes a long long time for the kitchen sink to get hot water. This little unit solves that problem with four gallons of hot water ready at any time. It's great for this need and looks nice and modern too. You just plug it into a regular outlet and hook up the hot and cold lines and it is good to go. It heats up fast, and doesn't feel hot on the outside.
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Reviewed in the United States on June 17, 2025 by MG
Well made, heavy duty, heats up fast, easy to install/mount. Size is perfect for under the sink, I can see where this would be extremely useful in a food truck, camper or cabin. The 4gal capacity is nice. I'm very happy with this, it's a great product that I'll be using for years to come.
Reviewed in the United States on May 27, 2025 by JB