Best Small Hot Water Heater Reviews of 2022

by Kenny Sanay on Nov 08, 2022

Best Small Hot Water Heater

Small hot water heater must be the one of the most practical investments in modern homes, which avoid waste of energy as well as time.

Table of Contents


Best Small Hot Water Heater



As people's lives are getting better and better, many aspects have become more convenient and automatic. Just like taking a hot bath in winter, there is an electric water heater, and you can take a bath anytime you want. But in the kitchen, it is a bit difficult. Because of the distance of the water heater between the bathroom and the kitchen, it may let off a lot of cold water, resulting in a waste of electricity and water. When winter comes, it becomes even more urgent to have quick access to hot water! Therefore, people invented an artifact - a small hot water heater.

Small instantaneous water heaters are not large in capacity. They can provide hot water when the temperature is low, and the hot water temperature can also be automatically adjusted. Its hot water can be used immediately without waiting, which is very suitable for people in daily life. It can be placed in places where hot water is needed, such as kitchen sinks and bathroom cabinets. Moreover, it saves electricity, and the price is cheap, which has been popular with many family recently.

If you usually use it frequently in the kitchen, and if the temperature is cold in winter, it is recommended to use small hot water heater.

Best Small Hot Water Heater

NO.1 3000W Mini Electric Water Heater Under Sink

2022 CNCEST Tankless Instant Hot Water Heater-3000W Mini Electric Water Heater Under Sink with LCD Display

Our first pick for this list of the beat small hot water heater is CNCEST Small Hot Water Heater. With the given size, this model is nearly 90% smaller compared to traditional tank-type water heaters. You can install it in a cabinet under your sink since it measures only 9.5 x 5.3 x 2.56 inches in size. It offers a temperature range of 28 to 55 ℃, which can be adjusted by the touch-screen buttons or be set by remote control.

Made of high quality materials, this mini instant water heater is durable, wear-resistant, corrosion-resistant and can be used for a long time. The inner liner is an aluminum casting heating body, with memory function, which can heat quickly, save electricity and water and have stable performance. Built in real-time chip monitoring, with anti leakage protection, this mini water heater supports post and shutdown protection functions.

Operation Method:
-Press and hold the shutdown key, and after 6 seconds, it will automatically switch to gear mode, and then press 6 seconds to switch the frequency conversion mode.
-Advantages of frequency conversion mode: the machine only needs to set the temperature, and the system automatically changes the output power to reach the set temperature, making the operation more convenient and the setting more intuitive.
-Advantages of gear mode: the gear is 4 gears, and the fixed power of each gear is 1500 / 3000W, respectively P1 / P2 1 to 2 gears.
-The gear can be controlled by people, the system does not need to calculate the power, and the low gear can be used in spring, summer and autumn.

NO.2 110V Tankless Water Heater Portable Water Heater

110V Tankless Water Heater Portable Water Heater Smallest Instantaneous Hot Electric Water Heater 3000W

If you still haven’t found the right option for a small water heater in your budget so far, the Portable Small Hot Water Heater 3000W is right for you. This is also a budget-friendly option. This tankless water heater, just 7.87x 5.12 x 2.56 inches, is easy to install under the bathroom or kitchen sink for washing dishes, food, clothes, faces and other functions. Standard 1/2 interface can be directly connected to household conventional hose connectors/faucet metal hoses/shower hoses/shower hoses.

The mini hot water heater offers 3 second instant heating and 3000W output which eliminate long time waiting and save much of your time when using it. With LCD digital temperature display, you can freely adjust water temperature by water flow which allows simple operation. Multiple safety measures are provided, such as anti-dry protection, hydroelectric isolation protection, and enclosure insulation protection, which make use more relieved. Water is heated fast and effectively, up to 126°F in a continuous flow.

NO.3 6KW Mini Electric Hot Water Heater

220V 6KW Instant Electric Tankless Water Heater-Mini Electric Hot Water Heater

6KW Electric Small Hot Water Heater is also a great option on our list that grants you many features within a very affordable price range. It is also a similar tankless-type option for water like the ones we have seen so far. It measures about 10.43x 7.87 x 3.08 inches in size.

Applied with 6KW heating system, the small water heater supplies instant, consistent and endless hot water of 126 ℉ or higher temp shortly, no waiting for preheat nor terrible temp up & down, perfect companion for sinks. The hot water heater adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge.

NO.4 1500W Electric Instant Hot Water Heater

CNCEST High-quality 110V 1500W Electric Instant Hot Water Heater HG-HJWJL-1022

CNCEST High-quality Small Hot Water Heater is a directly heating type with high efficiency and low power heating tube, which can take advantage of the thermal energy maximally. The temperature can be adjusted from 55℃ to 70℃ optionally, and the power will be off automatically when the set temperature is achieved.

With the features of beautiful appearance, small size, strong applicability and convenient installation, this small hot water is applicable for different water pressure of different areas, especially for families which are located on higher floors with low water pressure. A variety of protection devices and undergoes rigorous testing ensure 100% safety.


If you want something practical, you must want to know its benefits in detail. Below there are some essential features about small hot water heaters.

1. Rapid Heat Release
Small water heater itself is designed to solve the instant use of hot water in the kitchen. Generally, it is equipped with high-power electric heating pipes, which can make hot water ready to use without waiting, and quickly heat up.

2. Energy Saving and Time Saving
Due to the instant heating feature, the utilization rate of hot water is greatly improved, avoiding the long-term waiting for traditional heating. Because there is no need to preheat in advance, there is no heat energy loss during preheating. It is turned on when it is used and turned off when not in use.

3. Environmental Protection and Safety
Mini water heater adopts measures such as non-metal heating body, water and electricity isolation technology, leakage protection device, and grounding protection. Not only are the materials environmentally friendly, but they are also quite safe to use, so there is no need to worry about environmental protection and safety issues.

4. Small size
Small bodies are generally beautifully designed, which improve space utilization. If you use them at home, you don’t have to worry too much about taking up too much space.

5. Simple installation
Generally speaking, the installation of small water heater does not require drilling (some designs may require), and it will not damage the cabinet. The machine is also very simple and convenient to move.


Small hot water heaters are not only suitable for homes, but also for places where faucets are needed, such as companies and restaurants. When workers and customers wash their hands with warm water in cold winter, they will feel full of happiness. Hope the above hot-selling small water heaters can meet your needs and warm your palms. Have a good life!


Leave a Comment

Your email address will not be published.