Top 10 Best Mini-Tank Water Heaters in 2021

The cold weather can be extremely hard to bear if your house doesn’t have a sufficient supply of hot water. This will probably affect your lives in many ways causing discomfort to carry out your daily activities. With all problems considered, mini-tank water heaters are the best and affordable solutions.

After doing a detailed research, we have found you the top 10 best mini-tank water heaters from various brands with different features and offerings. Please take your time to go through the list and choose the right one according to your preference.

List of Top 10 Best Mini-Tank Water Heaters in 2021

10 Bosch Electric Mini-Tank Water Heater

Bosch Tronic 3000

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This Bosch water heater comes in three different sizes and options- 2.5, 4, and 7 gallons of water providing hot water range from 65 to 145 degrees Fahrenheit at a specific point where it is needed. Except for the 7-gallon water heater, there are three installment methods including floor, wall, and shelf mounted according to your choice. And, only simple maintenance is required. Moreover, the Bosch water heater features glass-lined tank with CFC free foam insulation for effective heating and long life usage.

With this premium water heater, waiting time is minimized because of its fast recovery rate and instant heating. What’s more, its dimension is 17.5 x 17.5 x 14.5 inches fit perfectly almost at any needed places offering a unique design. Also, it owns three different functions- as a sole water heating source, a supplement, and a buffer. Catching two birds with an arrow with this Bosch water heater- high functionality and a great décor.

9 Ariston GL4S Electric Mini-Tank Water Heater

Ariston GL4S Electric Mini-Tank Water Heater

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This Ariston GL4S water heater is the later model of Ariston GL4 water heater, but with better features and new improvements. The GL4S water heater features a new temperature adjustment knob on the front without the need to remove the blue oval cover like GL4. And, the temperature ranges from 65 to 145 degrees Fahrenheit. With such improvement, the GL4S can adjust temperature better and keep a more consistent heat. Moreover, the GL4S can be used independently or in series with a larger water source for a larger volume of water.

Being economical and environmental friendly, it only requires 12.5 AMPS.

Also, it measures 14 x 14 x 12 ¼ inches and weighs 17 pounds, which is very compact and consumes very little space. For the after service, you will get a 1-year warranty on parts and 6-year warranty on the heater body. Without a second thought, this Ariston GL4S is definitely what you need right now.

8 Eccotemp Mini-Tank Water Heater

Eccotemp EM-4.0 Electric 4.0-Gallon Mini Tank Water Heater

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This Eccotemp mini-tank water heater fits almost anywhere, and best use for point of use applications like underneath the sink ideally for a quick hand/face wash. Its storage capacity is 4 gallons of water with temperature range from 50 to 140 degrees Fahrenheit. By providing quick hot water, there is no waiting, which helps to conserve water and energy. Moreover, it can be used as free-standing or mounted on both floor and wall for easy installation with provided bracket. Also, pressure relief valve is also included in case the water pressure is bigger than 150 psi because the Eccotemp water heater operates with 150 psi at the maximum.

Furthermore, its dimension is 14.5 x 14.5 x 12.9 inches with 24 pounds. With this Eccotemp water heater, you will be able to save on resources while satisfying your needs substantially at the same time.

7 WaiWela WM2.5 Mini-Tank Water Heater

WaiWela WM-2.5 Mini Tank Water Heater

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This is a smaller size of the water heater from WaiWela. It holds up to 2.5 gallons of water enough to do little of hand and face washing at the sink. This WaiWela water heater is very handy coming in a compact size of 10.8 x 11.8 x 14.5 inches and 18.1lbs, which is perfect for space-saving families. What’s more, it features adjustable thermostat, overheats protection, and attached power cord for easy operation.

Besides from its essential features, it offers a sleek design perfect for décor brightening up your kitchen or bathroom. With this WaiWela water heater, you can have your hot water ready for you within minutes and comfortably enjoy the warmth.

6 Reliance Gallon Compact Electric Water Heater

Reliance 6 6 SOMS K

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This Reliance compact electric water heater is one bigger size water heater than the rest that was mentioned. It carries up to 6 gallons of water providing plenty amount of hot water to do your works. Ideally, this compact water heater is installed under the counter or crawl space with cold water inlet and hot water outlet. Moreover, no special cord is required; all you have to do is plug into the 120 V-outlet.

In more detail, the compact water heater is 15 ¼” tall, 14 1 wide, 14.1 deep, and 33.85 heavy- the number might be a bit big, but it works like a charm. Purchasing the compact water heater, you will get a 6-year warranty on the body in case of leakages and so on.

With big storage capacity and high performance, there are no other excuses to why not to buy such amazing water heater.

5 Ariston GL2.5 Electric Mini-Tank Water Heater

Ariston GL2.5 Electric Mini-Tank Water Heater

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This Ariston electric mini-tank water heater does its job perfectly by providing quick access to hot water, convenience, space saving, and aesthetic value to your overall decoration. The Ariston water heater stores water up to 2.5 gallons, and works best both on its own and in line with the large water heating system based on different conditions.

Beside this GL2.5 model, you can also get the Ariston water heater in two other sizes including 4 and 6+ gallons. All of them are extraordinary astonishing on the outside, durable on the inside with glass-lined design, and built with high-efficiency insulation.

Plus, the Ariston water heater’s measurement and weight are 14 x 14x 10 ¼ inches, and 16lbs accordingly. And, it is compatible with standard outlet plug of 120 volts. You will also get a 6-year warranty for its body and a 1-year warranty for its parts. Order now, and see how convenient your life would be.

4 Eemax EMT1 Mini Tank Water Heater

Eemax EMT1 1.3-Gallon Mini Tank Electric Water Heater

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This Eemax EMT1 mini-tank water heater is an easy solution to problems that have always complicated your life. It provides an instant and continuous hot water for daily usages at the point-of-use ideally under the sink. For this reason, it cuts down the use of long pipe runs from the central water heating machines saving resources and energy.

Additionally, the mini water heater can be installed easily to the wall or floor compatible with 120V outlet plug. Plus, the mini water heater adjusts temperature between 50-140 degrees Fahrenheit with the capacity of 1.3 gallons of water. Also, it weighs 14.75 pounds, super light weighted and measures 12.50 x 11.00 x 10.00 inches with 120 volts and 1.44 watts.

This mini water heater also offers a limited warranty of 2 years for its components, and 5 years for leakages of the body. With this Eemax EMT1 mini-tank water heater, things get so much easier, and you will never have to suffer in cold water or waste your time and already-scarce-water waiting for the hot water to arrive.

3 Enshey Electric Water Heater

Enshey 110V Electric Water Heater 50 Gallon

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This Enshey electric water heater is an absolute combo that you will never ask for more. It offers both high quality and unique classical appearance, which is definitely worth the purchase and satisfies the needs. The electric water heater is made to be lightweight fit in any small areas such as in the kitchen, restroom, or bathroom, which will not get in the way of your daily activities and existing appliances/furniture.

Furthermore, the electric water heater is a kind of heating type that heats efficiently and consumes less power. Also, it provides adjustable temperature between 55 to 75 degrees Celsius with auto power off when it reaches the set temperature. Conveniently, there are several methods to install this electric water heater, which makes it suitable for different areas with different water pressure. Therefore, you will still able to use hot warm water comfortably even though you live on higher floors with low water pressure.

On the technical side, the electric water heater uses the power of 1500W, the voltage of 110V 50 HZ, the minimum water pressure of 0.02MPa, and waterproof level IPX4.

In a purchase, you will get a body of the water heater and an operation manual. Thanks to its strong applicability and convenient installation, it is the best solution to problems like face/hands/vegetable washing, bathing, etc. for different families.

2 Waiwela Wm-4.0 Electric Mini-Tank Water Heater

Waiwela Wm-4.0

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Waiwela electric mini-tank water heater is an environmentally friendly water heater that cares for our surroundings especially fresh water. Normally, you would have to wait a while for hot water to arrive, and a large amount of fresh water was wasted in the process of waiting. With this mini-tank water heater, there is no waiting time, which makes it a very economical solution.

The mini 4 tank water heater provides hot water on the point-of-use, anywhere that it is needed, and it could be under the sink. The 4.0 model carries 4 gallons of water, however many options are available; there are WaiWela Mini 1.0, WaiWela Mini 2.5, WaiWela Mini 4 and WaiWela Mini 6. Besides, the mini tank water heater is designed to be suitable for both floor versatile and wall mounted according to your preference and convenience.

Plus, the mini tank water heater is made out of glass-lined tank with no CFC which is super harmful to our environment. Also, it has some other features and specifications including voltage of 120 Vac, power of 1400 Watt, water pressure of 150 PSI, amperage of 12 Amps, phase of 1, recovery at 90o F, temperature of 50-140oF, and measures 10 3/8” in depth, 11 ¾ in width, and 19 ¼” in height.

With this Waiwela electric mini tank water heater, you can save your wallet from unnecessarily spending on fresh water, and also save our environment at the same time.

1 Stiebel Eltron SHC Water Heater

Stiebel Eltron SHC 4 Mini-Tank

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Stiebel Eltron SHC is known to be a high quality mini-tank electric water heater that helps to save a ton of space in your house and simultaneously grants you access to hot water for hand washing or other kitchen activities. Moreover, the water heater can be installed under or near the sink fulfilling the needs right at the spot, which reduced pipe runs, the use of water and energy.

Plus, there is no special wiring required in operating this luxurious water heater because you can simply plug it into the outlet of 110-120V after you filled it with an adequate amount of water.

This water heater features glass-lined tank, water capacity of 3.96 gallons, weight of 22lbs, height of 18.19”, width of 12.28”, depth of 12.28”, and maximum temperature of 165 F. Furthermore, it also comes with a six-year warranty for only the tank, and two years for other parts of the water heater.

Because of the lightweight and compact size of the water heater, it is ideal for every living space and makes life so much more convenient. Why make your life difficult when you can simplify your way of living with this Stiebel Eltron SHC mini water heater?


After going through the list carefully, it is very crucial to know what you need and what works best in your circumstances. We hope that you find the list helpful in simplifying your decision-making process. It might be complicated to go right out there and look the right water heater for your house. That’s why we created the list and only chose the best ones for you. Without further ado, make a purchase now to survive through cold weather.