10+ Mini Tankless Water Heater Reviews for Your Bathroom or Kitchen Sinks

You can agree with me that having a hot shower is one of the most pleasant things in life. At times cold water feels as if it came from a melting glacier. Have you been looking for a reliable way to ensure that you will never have cold showers? A mini tankless water heater is the best product in that case. Normally, a mini tank-less water heater uses electricity or gas to warm water. To pick the ideal type, please read our mini tankless water heater reviews.

What Is the Best Mini Tankless Water Heater

Mini Instant Electric Hot Water Heaters Comparison Chart

Photo Title Price Buy
Ecosmart POU 3.5...image Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch $189.71 Check Latest Price
Bosch Electric Mini-Tank...image Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) $231.99 Check Latest Price
Ecosmart ECO MINI...image Ecosmart ECO MINI 2.5 2.5-Gallon 120V Electric Mini Tank Water Heater, White $169.00 Check Latest Price
Tankless Water Heater...image ECOTOUCH Electric Tankless Water Heater Point-of-Use Hot Water Heater $119.99 Check Latest Price
CAMPLUX Electric Mini...image CAMPLUX Electric Mini Tank Water Heater 2.5 Gallons (ME25), Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted $179.99 Check Latest Price
Ariston Andris 4...image Ariston Andris 4 Gallon 120-Volt Corded Point of Use Mini-Tank Electric Water Heater $169.99 Check Latest Price
Bosch Electric Tankless...image Bosch Electric Tankless Water Heater Check Latest Price
Thermoflow Electric Mini...image Thermoflow UT10 2.6-Gallons Electric Mini-Tank Water Heater $139.99 Check Latest Price
funwill Electric Mini-Tank...image Funwill Electric Mini-Tank Water Heater Household Kitchen Electrical Hot Water $196.70 Check Latest Price
Eemax EEM24013 Electric...image Eemax EEM24013 Electric Tankless Water Heater, Blue $223.07 Check Latest Price

Best Mini Water Heater Reviews

#1. Mini Tankless Water Heater Ecosmart POU 3.5 Electric Tankless Water Heater

mini hot water heater




  • 0.5 GPM for point of use
  • Can be installed underwater sink
  • Compact and sleek shape design
  • On-demand and constant hot water supply
  • The digital display shows output temperature
  • Copper and stainless steel components designed for efficiency


#2. Mini Tank Electric Water HeaterBosch Tronic 3000T 2.5 Gallon Heater

mini tank water heater




  • Three-gallon capacities available
  • Easy to maintain
  • Premium glass-lined material for a long service life
  • Perfect for independent installation or in-line with a large hot water source
  • Eliminate long waiting time for hot water
  • Supply up to 2 sinks at the same time


#3. Mini Instant Hot Water Heater –  HEEPDD LCD Display Water Heater

tankless water heater mini




  • Easy to operate
  • Perfect for bathroom or kitchen room washing
  • Multiple sleek colors available
  • LCD display to show exact water temperature
  • Constant hot water supply
  • Small compact shape

#4. Portable Water HeaterEcosmart ECO MINI Tank Water Heater

miniature water heater




  • Sleek and compact shape design
  • 99.8% energy efficient
  • Manufactured in the USA
  • Multiple models available
  • Digital output temperature display
  • Can be inlined with a large hot water source


#5. Mini Hot Water Heater Under SinkUmiwe Instant Hot Water Heater

mini tankless hot water heater




  • Instant heating without long waiting time
  • Automatically shutoff system
  • Leakage protection
  • Waterproof design
  • Constant temperature control function to adjust the water temperature freely
  • LCD display for exact water temperature


#6. Miniature Hot Water Heater ECOTOUCH Point of Use Hot Water Heater

mini water heater price




  • Three colors available
  • Endless hot water supply
  • A perfect companion for sinks
  • Smart self-adjustment on flow rate and temperature setting
  • Easy to operate
  • Black model comes with remote control


#7. Mini Water Heater for ShowerCamplux ME25 Electric Water Heater

mini tankless water heater




  • 2.5 gallons water heater fits under sink use
  • Easy to maintain
  • Glass-lined tank for long service life
  • Thermostat control allows adjustment of water temperature
  • Can be installed independently or in-lined with a large hot water source
  • Can be shelf, wall or floor mounted

Check Detailed Reviews


#8. Ariston Andris 4 Gallon Point of Use Mini Tank Electric Water Heater

mini heater




  • Three gallons capacity available
  • Instant and constant hot water supply
  • 6-year limited warranty
  • Can be wall or floor mounted
  • Easy to install with a standard 120-volt outlet
  • TitanShield exclusive technology to protect the tanks from insulation


#9. Bosch Electric Tankless Water Heater for Hot Water

mini hot water heater under sink




  • Constant and instant hot water supply
  • Easy to install
  • Can be used in the bathroom or under kitchen sink
  • Compact shape to save space
  • 98% energy efficient
  • Minimal standby loss


#10. Thermoflow UT10 Electric Mini Tank Water Heater

mini tank electric water heater




  • Provide constant hot water
  • The stainless steel tank and heating element for efficiency
  • Low standby loss
  • Advanced Thermostop technology to auto-stop heating
  • Active protection circuit for safety installation
  • Fast recovery time


#11. Funwill Electric Mini-Tank Household Water Heater

mini portable water heater




  • Easy to install
  • Compact shape for free installation
  • Applicable for different water pressure and different areas
  • 1500w large power
  • Less energy consumption
  • The power will auto-shutoff when the set temperature is achieved
  • Stainless steel heating tube for durability


#12. Eemax EEM24013 Electric Tank Water Heater

mini gas hot water heaters




  • Constant hot water supply
  • Advanced self-modulating technology to adjust needed energy
  • Compact size to save large space
  • Easy to install and use
  • Durable and long-lasting
  • The perfect companion for residential and commercial water heater

How Much Does It Cost on Mini Tankless Water Heater

Mini tank-less water heaters are more expensive when compared to traditional tank-less water heaters. What is the main reason behind this? It is all about their high cost of installation. Nowadays, a new tank-less water heater costs $1,500 while a hot water heater costs about $430 without installation.

Buying Guides of Mini Tankless Electric Water Heaters

There are very many tank-less water heater models out in the market. This means that it can be a tedious task when choosing the most reliable product. Over the years, we have witnessed numerous tank-less water heater manufacturers who sell fake and low-quality products to their customers. It can be very hard differentiating high quality and low-quality water heater.

Unlike the traditional water heater that holds water in a storage tank, a tank-less water heater lacks such features. What if the tank-less system fails to heat water as it passes through the unit? In that case, the water delivered at the tap will be lukewarm. Do you really want to purchase a mini tank-less water heater? Here are some of the most crucial things you should consider before purchasing a mini tank-less water heater.

mini instant hot water heater

Look for energy savings

You might be aware that energy savings were one of the reasons why mini tank-less water heaters were developed. It is an important factor you should never ignore when purchasing a mini tank-less water heater. Efficiency decrease as the household water needs to increase. Water heaters are some of the very few home appliances that have been designed with energy factor rating. What is the essence of this feature? You can easily measure the unit’s efficiency.

Choosing the right warranty

Recently, warranties have been varying from manufacturer to manufacturer. You are required to register your tank-less water heater model when you purchase it. What do you need to have in order to be eligible for warranty coverage? You should have your mini tank-less water heater professionally installed.

The best thing on warranties is that you can compare the most favorable. You should choose the product with a reasonable warranty period. Reasonable warranty times are a clear indication that indeed the manufacturer believes in delivering high-quality products.

Proper size

Mini tank-less water heaters come in numerous sizes. They vary depending on the temperature required to achieve a specific flow rate. You will be in a good position to choose the best water heater that arguably meets all your needs once you pay attention to these factors.

Final Pick: Top 3 Best Mini Tankless Water Heaters



David: Penn State-educated Mechanical Engineer and Business-savvy Fluid Dynamics Specialist. Balances family plumbing business support with a thriving engineering career at a top, undisclosed company. (they want it that way) I help Will with plumbing and HVAC needs on his Real Estate.

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