7 Best Under Sink Water Heater 2023 – Top Picks, Reviews & Buying Guide


Would you like to have some smart sized top featured under the sink water heater in your home? Best Under Sink Water Heater

As we know it’s a modern era of new technology where sizes matter the most. Although the market is full of new surprises, we have to choose the perfect thing for the desired work. Besides, who would not love a mini size water heater with all the new features. Additionally, a beneficial point is that these sleek and compact looking water heaters are much power saving than others. We have reviewed some of the Best Under Sink Water Heater 2023.

Best Under Sink Water Heater 2023

There are numerous built-in features in these under sink water heaters that will surprisingly change your way of life. While the very lightweight with attractive and smart shapes makes them handy and adjustable anywhere your need. Plus the cost to buy these best under sink water heaters is comparatively way cheaper than others.

Let’s dive into the description part with all the considerable and trending features of the best 7 under sink water heaters. Believe me, it wouldn’t take much of your time rather it will be worthwhile!

Comparison Table of Best Under Sink Water Heater 2023

Water HeatersRatingPrice
ECO 11 Under Sink Water Heater⭐⭐⭐⭐⭐
Bosch Tronic Under Sink Water Heater⭐⭐⭐⭐⭐
ECOTOUCH Under Sink Water Heater⭐⭐⭐⭐⭐
Camplux ME25 Under Sink Water Heater⭐⭐⭐⭐
Eltron DHC-E12 Under Sink Water Heater⭐⭐⭐⭐⭐
Stiebel Eltron Under Sink Water Heater⭐⭐⭐⭐
WaiWela Under Sink Water Heater⭐⭐⭐⭐⭐

List of Best Under Sink Water Heater 2023 – Highly Rated

 1.  ECO 11 Under Sink Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater,...
  • Endless On-Demand Hot Water; Consistent hot water when you need it that never runs...
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional...
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy...
  • Slim design and lightweight
  • Power-efficient
  • Digital display panel
  • Easy installable
  • The advanced technology of heater
  • Not compatible in extra cold weather


Eco 11 Under Sink Water Heater by EcoSmart comes at the top of our best selection list. Additionally, this water heater has top-rated features that can surely consume less electricity supply other than the different water heaters. Besides, the slim and compact design makes it exceptional, you can easily place them under your sinks or anywhere you desire.

Water Flow Capacity:

This tankless water heater has a moderate capacity of water flow to be considered. Besides, the flow of water surely depends upon the temperature of the coming cold. While it can deliver a minimum of 1.3 GPM of water up to 3.1 GPM maximum range.

Temperature Range:

Eco 11 under sink water heater has an adjustable range of temperature which can be easily changed from the display. Additionally, the measurement of temperature ranges from 80° F that’s minimum, while it has a maximum temperature of 140° F.


The design of this water heater has an entirely new and stylish look. Apparently, we can say that the compact shape with a surprising lightweight makes it easily placeable anywhere you need.


Surely that’s our prior selection to represent products with certification and approvals. Although, ECO 11 Water Heater is fully approved and certified by their manufacturers a popular and trusty brand EcoSmart.

Additional Features:

  • It has an advanced Self Modulating system inside to auto adjust temperature
  • 67 percent of power-saving with an electrical working heater
  • The electronics have a lifetime warranty
  • It has an overheating preventing system
  • The price is very worthy


  • ECO 11 water heater has very lightweight at 6.5 pounds.
  • The dimension of this tankless water heater is 3.75×8×5

 2.  Bosch Tronic Under Sink Water Heater

Bosch Electric Mini-Tank Water Heater Tronic 3000...
  • CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to...
  • LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium...
  • INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent...
  • The unique and handy design
  • Fast processing of hot water delivery
  • Power saving efficient
  • Very lightweight and small shape
  • Quick and easy installation
  • A bit low-capacity of water


Here comes the advanced technology Bosch Tronic 3000T Water Heater with a compact design and very lightweight. Apparently, it seems that this unique design mini water heater can adjust anywhere in your apartment, kitchen or shelf. Additionally, the new advanced technology inside can surely affect your power bills.


Bosch Tronic 3000T Under sink water Heater comes in a package with some of the basic components to install. There are cord plugs for connections, besides, other hardware components with plumbing materials. Additionally, the mini designed Bosch Tronic water heater itself.

Temperature Range:

This latest technology water heater has a built-in temperature adjuster inside to manage the temperature of the water as needed.


This mini size tank Bosch Tronic 3000T water heater has a 6-year warranty plan which is quite beneficial. Although, in case of any damage to the water heater’s part it could be replaced within 2 years with warranty.

Additional Features:

  • It has a water capacity of 4 gallons
  • The CFC-free protection is power saving
  • Advanced technology heater delivers fast warm water
  • Rare chances of maintenance
  • Has a Thermostat for auto adjustment of the temperature range


  • Bosch Tronic water heater has a moderate size of around 17.3 pounds
  • The dimension of this mini size water heater is 13.75×13.5×13.75

 3.  ECOTOUCH Under Sink Water Heater

Tankless Water Heater Electric 240V, On Demand...
  • 【INSTANT & SUFFICIENT HOT WATER】Applied with 5.5KW heating system, the electric...
  • 【SMART SELF ADJUSTMENT】The hot water heater adjusts power input based on flow...
  • 【CONVENIENT USE】The tankless water heater comes with digital display & touch...
  • Advanced design with digital display
  • Very lightweight and compact
  • Water leakage protection
  • Electricity saving efficient
  • Easy to install
  • Work slow in extra-cold weathers


ECOTOUCH ECO55 tankless water heater is surely an innovative product with all the unique and beneficial features inside. Additionally, it has a very attractive and compact design which makes it easy to placeable as you desire. Besides, the attractive appearance with a glass panel display showing the status and setting on it makes it exceptional.

Water Flow Capacity:

This ECOTOUCH water heater has a fast working technology with digital operators built-in. While the measurement of water flow capacity inside these water heaters is adjustable and constant. Besides, it varies from 1 GPM to around 1.6 GPM which is quite average.

Temperature Range:

Although the temperature range of this water heater varies with the incoming cold water. Additionally, the advanced technology of this ECOTOUCH water heater has a temperature adaptor to automatically adjust the temperature. Furthermore, the minimum temperature range is 67° F, while, the maximum adjustable temperature is 109° F.

Power Saving:

Less electricity consumption means money saving power bills. While these power-efficient water heater can surely save up to 98 percent of power consumption. Although, it takes around about 23 of maximum amperages which is quite beneficial.


ECOTOUCH ECO55 water heater comes with all the needy components along with it in a package. Additionally, it has 2 gaskets along with screws and anchors for the installation process. Besides, there’s a mounting bracket along with the water heater itself.

Additional Features:

  • It has a modulating system for self-adjustment of temperature
  • Strong body aluminum insulation
  • Advanced touch system panel
  • It has a leakage sensor for protection
  • ETL approved and certified


  • This tankless water heater has a lightweight of 6.74 pounds
  • ECOTOUCH ECO55 has a dimension of 14.4 × 9 × 9.7

 4.  Camplux ME25 Under Sink Water Heater

Camplux ME25 Mini Tank Electric Water Heater...
  • Saving Energy & Money - Built in insulation foam, reduces heat loss. 2.5-gallon...
  • High Quality Built & Elegant Design- Camplux electric water heater has glass-lined...
  • UL Approval Safety - Thermostat Control allows adjustment of water temperature. High...
  • Compact design and attractive shape
  • Fast processing heater
  • Auto-lock protection for overheating
  • Easy to install
  • Very affordable price
  • Fitting pipes cover extra space


A multi-functioning indoor-outdoor Advanced water heater the ME25 by Camplux is perfect for you is at your service. While the very compact and new design with many beneficial features this water heater can adjust anywhere you like. Although, it consumes a very acceptable power supply to work on which definitely is power efficient.

Water Flow Capacity:

Due to the latest technology, this mini-tank water heater has many features along with adjustable water capacity. Besides, the measurement of water capacity in this water heater is around 2.5 gallons of water which is quite moderate.

Temperature Range:

ME25 Camplux water heater has a helpful feature of temperature range adjustment. While the minimum measurement of temperature in this water heater is 50° F which is quite moderate. Additionally, the maximum temperature that can be adjustable is 140° F.


This mini-tank water heater has a very slim design with a surprising lightweight which is quite handy. Besides, the small shape with a mini tank helps it to place anywhere you desire in your home.


No need to worry about the product quality as it is fully certified by the global safety certification company UL.

Additional Features:

  • It has a CSA technology for the protection of temperature adjuster
  • This water heater has a waterproof system with IPX23 Level
  • The mini tank is glass linked for the safety purpose
  • Works brilliantly in cold weather with overcooling protection
  • It has a one year warranty
  • Advanced technology prevents overheating


  • This mini-tank water heater has very lightweight at 0.2 pounds
  • The dimension of Camplux ME25 water heater is 11.75×17.25×10.38

 5.  Eltron DHC-E12 Under Sink Water Heater

Stiebel Eltron 230628 DHC-E12, White
  • Set the knob on the front cover and enjoy water temperatures between 86DegreeF...
  • The three years parts warranty is unique in the industry
  • Due to its small dimensions and attractive housing the DHC-E can be left unconcealed...
  • Very easy to install
  • Lightweight with a compact design
  • Overheating prevention system
  • Attractive design and energy-efficient
  • Very worthy price
  • Don’t have any


Eltron DHC-E12 under sink water heater is a unique and beneficial innovation by Stiebel. Additionally, the very close-packed design makes it easy to adjustable and placeable anywhere you desire. While advanced technology features in this water heater have a power-saving efficient system which will definitely save your bills.

Temperature Range:

This mini-tank water heater has an automatic temperature sensor for self-adjustment. Although the measurement of temperature ranges from the minimum temperature of 80° F up to the maximum 125° F adjustable.

Indoor-Outdoor use:

The additional feature of this mini-tank water heater is it’s very lightweight with a compact and slim design. This handy feature makes it easy to carry outdoor as well as easily placeable in your home, bathroom, and kitchen.


Electron DHC-E12 is a german manufacturing advanced technology with many unique features. Besides, it is fully certified and approved by the manufacturer and global safety corporations.

Additional Features:

  • It has built-in modulating technology for automatic adjustments
  • The firm copper made heating system is long-lasting fast
  • It has shut down sensors in case of overheating
  • The flow sensor can maintain the water capacity in the heater
  • It works silently with the hydraulic management system


  • Stiebel Eltron has a moderate weight of 5.94 pounds
  • This under sinkwater heater has a dimension of 4.1×7.9×14.2 in inches

 6.  Stiebel Eltron Under Sink Water Heater

Stiebel Eltron 220816 Mini 3 Tankless Water...
  • Extremely compact design saves space
  • Major energy savings
  • Unlimited supply of hot water
  • Slim design easy to placeable
  • Fast working water heater
  • Energy-saving efficient
  • Easy to install
  • Affordable price
  • No digital panel for settings display


Stiebel Eltron 220816 mini water heater with more additional features built-in will definitely save your precious time and effort. Besides, it comes in 3in1 beneficial advanced technology systems that will be power efficient and fast working. Plus the compact design makes it quick to place and easy to install. Although it’s the best choice to get warm water without wasting your time in cold weather.

Water capacity and temperature:

Apparently, it’s an average water flow capacity water heater with a moderate pressure of warm water outlet. Besides, it can be easily used for handwashing purposes along with bathroom use too. Additionally, this advanced technology having self temperature adjustor to manage the temperature of cold water.


This 3in1 Stiebel Eltron water has a compact design with an attractive and handy shape. Additionally, due to the very lightweight, this amazing water heater can easily be placed anywhere and mounted on the wall.


As we know Stiebel is a german manufacturing corporation with certification. Besides, you don’t have to worry about the working criteria and product quality as it is approved by the manufacturers.

Additional Features:

  • It has a pre-wired section connected with the system for easy installation
  • It’s a power-saving beneficial system as it works on 3kW
  • It has a protection system for overheating prevention
  • This unique design can be mounted up or down
  • It works silently with an advanced technology heater inside


  • This 3in1 under sink water heater has an average weight of 3.44 pounds
  • Stibel Eltron has a sleek shape with a dimension of 6.5×3.75×7.5 in inches

 7.  WaiWela Under Sink Water Heater

WaiWela WM-2.5 Mini Tank Water Heater, 2.5-Gallon
  • Under sink installation, floor or wall mount
  • Install at point-of-use
  • Adjustable thermostat with overheat protection
  • Compact and sleek design
  • Fast processing delivery of warm water
  • Electricity saving efficient
  • Quick installation
  • Protected body and leak-free
  • Temperature-adjustment is a bit complex


As everybody knows WaiWela has a successful name in the line of home appliances. This advanced technology product WM-2.5 mini Tank Water heater has all the trending and latest features built-in for your ease. Besides, the unique shape with a compact design makes it attractive and easy to place anywhere you want. Although the mini tank has enough space to regulate the water supply with fast processing.

Water Flow Capacity:

WM-2.5 WaiWela mini-tank water heater has an average capacity for the circulation of hot water. Additionally, the measurement of water flow capacity is 6.5 gallons per hour which are adjustable at 90-degree temperature.

Temperature Range:

The measurement of the temperature range in this WaiWela mini-tank water heater is adjustable with a sensor adaptor. Besides, you can maintain the temperature of the water with a minimum range of 50° F up to 140° F maximum


The design and shape of this mini-tank water heater are quite sophisticated and compact. Besides, the outlet water pipe has a firm connection for the delivery of warm water which protects against water leakage. While the advanced technology machinery inside the housing has mini size components which makes it a sleek shape.


This best under sink mini-tank water heater by WaiWela is fully approved and certified. Besides, the authentic global safety certification company UL has certified the working criteria of this fast-processing water heater. So no need to worry about the quality of the material or the working process of the heater.

Additional Features:

  • This water heater has a 150 PSI water pressure
  • It has a thermostat for the adjustment of the temperature range
  • The mini tank of this water heater is lined with glass material
  • This WaiWela water heater has a water capacity of 2.5 gallons
  • It has an affordable and worthy price
  • The manufacturers give a 6-year warranty plan on the tank


  • WM-2.5 water heater by WaiWela has an average weight of 18.1 pounds
  • The dimension of this under sink water heater is 10.75×75×14.5 in inches

Buying Guide For Best Under Sink Water Heater 2022:

The buying guide is basically at your service to help you consider all the topmost matters to choose the right product. Besides, the helpful guideline will always favor the priorities of our customers that you should buy these products or not.

Additionally, there is a huge variety of under-sink water heaters in the market with different features and shortcomings as well. Besides, a short time filtration will definitely sort out the right product for you with all the beneficial features.

  • Shape and size:

Well, the shape of the desired product with the demanding size matters the most. That’s why we are representing these best under sink water heaters with the most demanding shape and easily placeable size. Besides, even there are additional features in the design of shapes in some of the water heaters as well. Additionally, it’s up to you if you want to shelf these water heaters or mount them on the wall.

  • Safety features:

There are a few items which have no protection features that look alluring however their are truly perilous to utilize. That’s why we had already mentioned all the safety features built-in our water heater which prevents bursting and other hazards. Because safety matters first and all our selected water heaters have comparatively additional advanced technology security features in them.

  • The capacity of water:

The next point to be considered is how much warm-water you need for a water heater to deliver at what scale. As before we have enlisted the best under sink water heaters, with various measurements of water capacity in their tanks. Thus, it will be crystal clear for you to consider that how much quantity of water capacity you looking for your need. Besides, our list had shown the top trending featured water heaters with varying water capacity from lower to high.

  • Warranty and certification:

Mostly people wonder whether this product is safe to use or is certified or not, which is important to consider. Thus, we are delighted to believe that all our top selected water heaters with advanced features are fully approved and certified. In fact, we had already mentioned the certification companies with all the authorities to use them as they are the safest products. Additionally, all our listed best under sink water heaters have various changeable warranty plans in case of damage.

It’s always delightful to say the right thing. we hope our researched base guideline will help you choose the right product for you.


What is the best under sink water heater?

These are our top 3 selections:

  • ECO 11 Under Sink Tankless Water Heater By EcoSmart
  • Bosch Tronic 3000T Under Sink Mini Tank Water Heater
  • Eltron DHC-E12 Under Sink Water Heater By Stiebel

Will it be valueable to spend money on these under sink water heaters?

We can hopefully say yes, as all the selected water heaters in our list have most of the beneficial and top-rated features.

What is the working criteria of these under sink water heaters?

Well, the processing of these best under sink water heater is quite sophisticated and beneficial as well. Plus they have all the advanced technology machinery built-in to give the best outcome.

Do these water heaters have an adjustable temperature?

Definitely, due to the advanced technology features, all the listed water heaters have sensors of auto-adjustable temperature.


We can hopefully conclude these water heaters as the best featured under sink water heaters. In addition, these trendsetting innovation water heaters have all the interesting highlights to help save your power charges. Besides, we have thoroughly explored all the prior and considerable needy features to in a perfect water heater. So that’s why we had included these attractive designed and compact shaped water heater with all the exceptional and beneficial qualities. Besides, these water heaters can definitely deliver warm water with fast process units plus reduce your electricity bills.

Our Recommendation:

We recommend you Eltron DHC-E12 Under Sink Water Heater By Stiebel as best and our 1st    recommendation. Besides, this amazing under sink water heater has advanced technology fast working processing criteria with attractive shape. Then we recommend ECOTOUCH ECO55 Digital Under Sink Tankless Water Heater with digital display and adjustable temperature range at an affordable price.

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