Top 29 Under Sink Water Heaters on Amazon (Verified You can Buy)
KENUOS Under Sink Instant Hot Water Heater 2.5 Gallon Water Heater Digital Display Household 120V 1500W Mini Tank Water Heater,RV Small Water Heater with Updated Pressure Release Vavle
KENUOS
SY-15
11.4 x 11.4 x 11.4 inches
9.0 pounds
Ratings for KENUOS (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| KENUOS-US | - | ❌ | ❌ | ❌ |
Features
Ideal 2.5 Gallon Water Heater:KENUOS 2.5 Gallon Water Heater Has Upgraded Its Temperature Digital Display Function And An Independent Pressure Relief Valve.Besides,This 110V Small Water Heater Is Filled With CPC Free Foam Inside.Not Only Does It Focus On The Safety Performance During Use,But It Also Pays Attention To The Energy-Saving And Insulation Effect Of Small Water Heater.This Small Water Heater Is Ideal Choice for Customers
Temperature Adjustable and Digital Display:Kenuos 110V Instant Hot Water Heater Supports Knob Adjust,Range From 86°F To 150°F Temperature Control,Combined With The Digital Display On The Front Panel,Making Temperature Adjustment More Intuitive And Convenient
Top 2
Best for Tanked
Best for Compact
Best for Mini
Best for 120 Volt
Best for Boiler
Best for 30 Gallon
Best for 40 Gallon
Best for 60 Gallon
KENUOS Under Sink Instant Hot Water Heater,2.5 Gallon Mini Tank Water Heaters with LED Display,1500W 120V Small Water Heater 1/2" NPT for RV,Kitchen,Compact Design with T&P Valve,3-Way Fitting Valve
KENUOS
WTank25DI
11.4 x 11.4 x 11.4 inches
8.0 pounds
Ratings for KENUOS (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| KENUOS-US | - | ❌ | ❌ | ❌ |
Features
Upgraded mini tank Water Heater Design-Our 2.5 gallon water heater has increased tank thickness to 0.04" to extend lifespan. it is equipped with LED temperature display, Keeping you informed of the current real-time temperature at any time.The new T&P valve protects the water heater when the internal pressure and temperature are too high, and the 3-way water diverter valve can supply water to two sinks, making it more convenient for you to get hot water
Rapid Heating and Recovery-Our small hot water heater has a heating power of 1500 watts, supporting fast heating. The improved L-shaped heating tube increases the heating area of the water and the heating efficiency. The heating time is shortened to 4 to 6 minutes, so you don't have to wait for a long time
Top 3
Best for Tanked
Best for NG
Best for Mini
Best for Thermostat
Best for Wall
Best for 120 Volt
Best for 100 Gallon
KENUOS 4 Gallon Water Heater Under Sink Instant Hot Water Heaters 1500W 110V 120V Mini Tank Water Heater with T&P Vavle 1/2" NPT for Kitchen,Bathroom,Camper,RV,Grey
KENUOS
4 gallon water heater
13.5 x 13.5 x 13.8 Inches
5.0 Pounds
98%
Ratings for KENUOS (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| KENUOS-US | - | ❌ | ❌ | ❌ |
Features
Rapid Hot Water Supply and Recovery-Kenuos 4 gallon water heater features a 1500W heating power and an upgraded L-shaped 316 stainless steel heating tube, enabling rapid heat conduction with a thermal efficiency of up to 98%. which makes our mini tank water heater can provide hot water in as little as 8 minutes,meeting your demand for a fast water heating solution
Customer Friendly 4 Gallon Water Heater-Our under sink water heater comes equipped with a 3-way diverter valve that splits the water flow into two, meeting multi-point water supply needs.It also includes two 24 inch 3/4" ID to 1/2" ID adapter hoses, solving the problem of pipe compatibility with different regional specifications.Additionally,a temperature and pressure relief valve and mounting kit are provided, eliminating the need for you to purchase any extra accessories
Top 4
Best Water Heaters
Best for Inline
Best for Electric
Best for NG
Best for Compact
Best for Digital
Best for Outdoor
Best for 120 Volt
Best for 60 Gallon
Best for 100 Gallon
Best Tankless Water Heaters
Best for Takagi
Best for Noritz
Best for Stiebel Eltron
Best for Rinnai
Best for EcoSmart
Best for FOGATTI
Best for GASLAND
Best for Eccotemp
Best for AO Smith
Best for 2 GPM
Best for 15 GPM
110V Tankless Water Heater Electric, 3000W Tankless Electric Water Heater Instant, Under Sink Water Heater with Digital Display, On Demand Hot Water Heaters Electric for Kitchen Washin Bathroom.
xwdzswgs
Tankless Water Heater
4.32 x 4.32 x 7.86 inches
Ratings for xwdzswgs (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| liuyiliang7788 | - | ❌ | ❌ | ❌ |
Features
Tankless Electric Water Heater - This electric tankless water heater uses stainless steel and ABS materials, LED display. With 3000W power, the electric water heater tankless can raise the water by 82° F(0.3GPM) -131° F(0.5GPM) in seconds. The instant water heater can set Fahrenheit or Celsius degrees by holding the power button for 6 seconds. This 110 volt electric tankless hot water heater uses advanced technology, no need to preheat, eliminating the long waiting time for hot water!
Safety Intelligence Reliable - This instant hot water heater has multiple protection functions. IPX4 waterproof, water and electricity isolation, leakage protection, dry boil protection, and automatic power off under overheating and inactivity. On demand water heater with LCD digital display, intelligent detection of working status, and performance. The thermal efficiency of electric hot water heater is as high as 98%, allowing you to enjoy hot water at any time and save energy.
Top 5
Best for Inline
Best for Electric
Best for NG
Best for Compact
Best for Digital
Best for Mini
Best for Thermostat
Best for Remote Control
Best for Waterproof
Best for 120 Volt
Best for Boiler
Best for 10 Gallon
Best for 100 Gallon
Best for Takagi
Best for Noritz
Best for Rinnai
Best for EcoSmart
Best for FOGATTI
Best for GASLAND
Best for Eccotemp
Best for AO Smith
Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater with Digital Display, On Demand Hot Water heater Electric for Kitchen Bathroom Washin
xwdzswgs
Water Heater Electric
4.32 x 4.32 x 7.86 inches
Ratings for xwdzswgs (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| liuyiliang7788 | - | ❌ | ❌ | ❌ |
Features
✔ ELECTRIC TANKLESS WATER HEATER - This tankless electric water heater is made of high-quality ABS material, with LED display. With 3000W power, the mini water heater can raise the water by 82° F(0.3GPM) -131° F(0.5GPM) in seconds, providing tankless instant, continuous hot water without waiting for preheating, meeting daily hot water needs. The on demand water heater can set Fahrenheit or Celsius degrees by holding a power button for 6 seconds.
✔ COMPACT AND EFFICIENT DESIGN - The electric water heater tankless adopts an ultra-thin and smooth appearance design, which is beautiful and elegant. The point of use water heater can meet your outlet temperature requirement. The Larger the water flow, the lower the outlet temperature; The smaller the water flow, the higher the outlet temperature. Not Suitable for Shower(Shower normally requires at least 1.8 GPM). Under sink water heater 110v plug in.
Top 6
Best for Inline
Best for Tanked
Best for Electric
Best for Battery
Best for LP
Best for NG
Best for Compact
Best for Mini
Best for Outdoor
Best for Thermostat
Best for Timer
Best for Waterproof
Best for Indoor
Best for Wall
Best for Residential
Best for 120 Volt
Best for Boiler
Best for 10 Gallon
Best for 20 Gallon
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
Best for Stiebel Eltron
Best for AO Smith
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
Bosch
ES 2.5-1M WIR S3100
13.75 x 10.75 x 13.75 inches
15.5 pounds
98%
Ratings for Bosch (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
CONVENIENT HOT WATER HEATER: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
Top 7
Best Water Heaters
Best for Tanked
Best for Compact
Best for Mini
Best for Wall
Best for 120 Volt
Best for 30 Gallon
Best for Stiebel Eltron
thermomate Mini Tank Electric Water Heater ES250 2.5 Gallons Point of Use No Wait for Hot Water Under Kitchen Sink 120V 1440W, Wall or Floor Mounted, UL Listed
thermomate
ES
12.95 x 12.95 x 16.49 inches
15.4 Pounds
99%
Ratings for thermomate (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| thermoflow | - | ✅ | ✅ | ✅ |
| THMOS | - | ✅ | ✅ | ✅ |
| ThermoMate Official | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
【No More Wait for Hot Water】- Point of use 2.5 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Adjustable temperature range from 50°F to 149°F
【Easy Installations】- Dimensions 12.95"W x 12.95"H(16.49" with valve) x 11.5"D compact design, can be wall or floor mounted under sink / counter, plug into a standard 120V outlet.
thermomate Mini Tank Electric Water Heater ES150 1.3 Gallons Point of Use Water Heater for Instant Hot Water Under Kitchen Sink 120V 1440W, UL Listed
thermomate
ES
11.42 x 9.65 x 14.95 inches
11.0 Pounds
Ratings for thermomate (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| thermoflow | - | ✅ | ✅ | ✅ |
| THMOS | - | ✅ | ✅ | ✅ |
| ThermoMate Official | - | ❌ | ❌ | ❌ |
Features
[No Wait for Hot Water] - Point of use 1.3 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%
[Small Compact for Sink] - The hot water heater is compact designed for your sink with dimensions 11.42" x 11.42" x 9.65", can be wall or floor mounted under sink / counter, plug into a standard 120V outlet. Nominal current 12amps
Top 9
Best for Inline
Best for Electric
Best for NG
Best for Compact
Best for Digital
Best for Mini
Best for Thermostat
Best for Waterproof
Best for Wall
Best for Residential
Best for Boiler
Best for 60 Gallon
Best for 100 Gallon
Best for Takagi
Best for Noritz
Best for FOGATTI
Best for GASLAND
Best for Eccotemp
Best for AO Smith
Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water Heater for Kitchen Bathroom Washin
xwdzswgs
Water Heater Electric
4.33 x 4.33 x 7.87 inches
Ratings for xwdzswgs (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| liuyiliang7788 | - | ❌ | ❌ | ❌ |
Features
✔ MINI INSTANT HOT WATER HEATER - This 110 volt water heater is equipped with state-of-the-art technology, with 3000W power, LED display. The electric tankless water heater 110v can raise the water by 82° F (28°C) (0.3GPM) -131° F( 55 °C) (0.5GPM) in 3-5 seconds, saying goodbye to long waiting times for hot water. The tankless electric water heater can set Fahrenheit or Celsius degrees by holding a power button for 6 seconds.
✔ SAFETY INTELLIGENCE RELIABLE - This under sink water heater has multiple protection functions. IPX4 waterproof, leakage protection, dry-burning protection, automatic power-off in over-temperature and inactive states. Tankless hot water heater electric can meet your outlet temperature requirement. Large water flow means low temperature and small water flow means high temperature. TIP: Install vertically to avoid malfunction of the heating elements (E2).
Top 10
Best for Inline
Best for Electric
Best for Compact
Best for Mini
Best for 100 Gallon
Best for Takagi
Best for Noritz
Best for FOGATTI
Best for GASLAND
Best for Eccotemp
Best for AO Smith
110V Tankless Water Heater Electric, YIHUIBF 3000W Tankless Electric Water Heater Instant, Under Sink Water Heater with Digital Display, On Demand Hot Water Heaters Electric for Kitchen Washin
YIHUIBF
XF-FB
4.5 x 4.5 x 7.8 inches
Ratings for YIHUIBF (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| YIHUIBF | - | ❌ | ❌ | ❌ |
Features
【Instant Heating & Precise Temperature Control 】This 110V 3000W tankless water heater adopts premium stainless steel and ABS materials, heating water instantly in seconds without preheating. It supports temperature adjustment from 82°F (0.3GPM) to 131°F (0.5GPM) to meet daily water demands. The built-in LED display supports Celsius and Fahrenheit switching by long pressing the power button for 6 seconds, enabling real-time and accurate temperature monitoring for convenient use
【Full Safety Protection & High Energy Efficiency】 Equipped with comprehensive safety functions, this water heater features IPX4 waterproof, water-electric isolation, leakage-proof, dry-burn-proof and overheating protection, with automatic power-off for idle status. It eliminates daily safety hazards effectively. With a high thermal efficiency of 98%, it cuts down power waste greatly. Intelligent real-time operation monitoring ensures long-term stable and safe working performance
Top 11
Best for GE APPLIANCES
Best for Tanked
Best for Compact
Best for Mini
Best for Thermostat
Best for 120 Volt
Best for 30 Gallon
Best for 40 Gallon
Best for Eccotemp
GE Appliances 2.5 Gallon, Versatile Mini Tank Water Heater with Adjustable Thermostat, Easily Installs Under Sink, 120v, GE02P08BAW
GE
GE02P08BAW
13.0 x 13.0 x 13.0 inches
Ratings for GE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
COMPACT DESIGN - Ideal in limited spaces like kitchens, bathrooms, laundry rooms, barns, cabins, RVs, garages, sheds, pet washing station, etc
EASY INSTALLATION - Installs in minutes with existing plumbing. Uses standard 1/2-in NPT water connections for simple wall or floor mounted installation
110V/115v/120V 1400-1500W Small Under Sink Tank 2.5 Gallon Water Heater Hot Storage，Mini Instant Electric RV TR Trailer Kitchen Compact Point-of-Use,2 PCs 16” Long 1/2”FIP Stainless Steel Hoses 9.5L
FIPEUN
FI-01
25.0 x 13.0 x 13.0 inches
10.8027 Pounds
98%
Ratings for FIPEUN (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| FIPEUN | - | ❌ | ❌ | ❌ |
Features
2 PCs 16” long 1/2”FIP ,Stainless steel water hoses ,Vent valve,included
【NOTE】The cold water pipe has a safety valve, which is marked with a water pressure of 0.75MPa. When the water pressure in your home is greater than this value, the safety valve will automatically drain. At this point, you only need to contact us, we will send you a 0.9MPa exhaust valve, you can solve this problem
Top 13
Best for Compact
Best for 20 Gallon
Best for 30 Gallon
Best for 40 Gallon
Best for 100 Gallon
Best for Takagi
Best for FOGATTI
Best for AO Smith
Best for 9 GPM
LFEVTZ 110V Electric Tankless Water Heater 3000W, Instant Under Sink Hot Water Heater with Digital Display, Portable Mini Water Heater for Kitchen, Bathroom, RV
LFEVTZ
LZ-RESHUIQI-1
4.5 x 4.5 x 8.5 Inches
Ratings for LFEVTZ (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| KuangShengkejiyouxiangongsi | - | ❌ | ❌ | ❌ |
Features
【Instant Hot Water, No Waiting】With the LFEVTZ 110V mini tankless water heater, enjoy hot water in seconds—no preheating required. Advanced heating technology delivers temperatures from 82°F (0.3 GPM) to 131°F (0.5 GPM), eliminating wait time at your sink.
【Compact & Space-Saving Design】Designed for small spaces like kitchens, RVs, and camping setups, this compact unit mounts on the wall to save space. Water temperature adjusts based on flow rate—lower flow = higher temperature, giving you flexible control for daily tasks like washing dishes, food, hands, and more.
Top 14
Best for Tanked
Best for LP
Best for Mini
Best for Wall
Best for 10 Gallon
Best for 20 Gallon
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
Best for AO Smith
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
Bosch
ES4
13.75 x 13.5 x 13.75 inches
17.3 Pounds
98% thermal efficiency
Ratings for Bosch (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
ECOAPTUNIT Tankless Water Heater Electric 110V, 3000W
ECOAPTUNIT
110v tankless water heater 3000w
4.53 x 4.53 x 7.86 inches
2.43 pounds
Ratings for ECOAPTUNIT (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ECOAPTUNIT | - | ❌ | ❌ | ❌ |
Features
Compact Design: The ECOAPTUNIT 110V tankless water heater electric features a sleek, space-saving design that fits easily in tight spaces, perfect for apartments, small homes, or utility rooms.
Instant Warm Water: Enjoy continuous warm water on demand with the ECOAPTUNIT electric tankless water heater—no more waiting or running out of warm water during peak usage times.
Westinghouse 2.5 Gallon Electric Mini Tank Water Heater, 120V, 1440W Instant Hot Water for Point-of-Use, Compact Under Sink & RV Design, Easy Wall/Floor Mount, CSA Listed (Gray)
Westinghouse
2.5G
13.39 x 13.39 x 16.89 Inches
17.6 pounds
Energy Efficient
Ratings for Westinghouse (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Westinghouse Home Comfort Direct | - | ❌ | ❌ | ❌ |
Features
【Ideal Use Guide: Perfect for Single-Sink Setup】Designed as a dedicated hot water source for one bathroom sink, kitchen faucet, or RV. It heats and stores water (not an instant heater) – ideal for handwashing and dish rinsing without whole-house plumbing costs.
【Certified Safe & Exceptionally Durable】CSA certified for guaranteed safety. Features a triple-layer glass-lined tank with a total thickness of 2mm, built on a 1.5mm-thick steel substrate for a robust foundation. Rigorously tested to withstand 160,000 uses and 150 PSI pressure, ensuring leak-free performance and years of reliable service.
Top 17
Best for Mini
ThermoMate Mini Tank Water Heater Electric, ES250B 2.5 Gallon Point of Use Under Sink Water Heater, 120V Corded Wall or Floor Mounted, UL Listed
thermomate
ES250B
13.6 x 13.2 x 18.9 inches
Ratings for thermomate (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ThermoMate Official | - | ❌ | ❌ | ❌ |
Features
IMMEDIATE HOT WATER - 2.5 Gallon point of use water heater to supply instant hot water on demand at your sink. 24 hours standby, foam insulation and fast reheating, eliminate the long time wait and wasting water
EASY TO INSTALL - 1/2" NPT connector, corded plug into 120V outlet, simply tap into the water line and install the heater directly at the sink. Temparature & Pressure relief valve included, shelf, wall or floor mounted
Top 18
Best for Digital
Best for Mini
Best for 120 Volt
Best for Takagi
Best for FOGATTI
Best for 10 GPM
Mini Tankless Under Sink Instant Water Heater 120V 3kW Plug In, LED Digital Display with Control Knob, IPX4, Multiple Safety Features, 30-55℃ Thermostatic On Demand Electric Water Heater, Modern Gray
Generic
C3000
7.1 x 7.1 x 9.8 inches
Ratings for Generic (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| LECLOC SHOP | - | ❌ | ❌ | ❌ |
Features
LED Digital Display with Big Control Knob: This point of use water heater is very easy to use. 1 knob for power ON/OFF and temperature adjustment, offering a better use experience than others 3 little touchscreen buttons. You can adjust the temperature between 30℃ and 55℃
Multiple Safety Features and Smart Design: This instant water heater is engineered with comprehensive safety protections, including overheat protection, leakage protection, dry heating protection, over-pressure protection, IPX4 waterproofing, and drop test certification. Besides, it has automatic fault diagnosis and constant temperature memory functions. It is very safe and intelligent to use
Top 19
Best for Compact
Best for Mini
Best for 120 Volt
Best for 20 Gallon
Best for 50 Gallon
Best for 100 Gallon
110V-120V 1.5Kw Electric Tank Hot 2.5 Gallon Water Heater Storage，Small Under Sink Counter RV TR Endless Trailer Kitchen Compact Point-of-Use,2 PCs 16” Long 1/2”FIP Stainless Steel Water Hoses 9.5L
BISELONG
BI-2.5
11.2 x 11.2 x 11.8 inches
9.5 Pounds
Ratings for BISELONG (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| BISELONG | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ✅ | ✅ | ✅ |
Features
【SAFE DURABLE & LONGEVITY】Made of stainless steel and never rust，Anti-leakage plug，Multiple safety protection functions protect you from the risk of scald, leakage or other injury.Premium plastic shell is corrosion resistant，This mini hot water heater is ideal for kitchen, bar, school, hospital, community and RV.
【SMART INVERTER FOR ENERGY SAVING】Automatic heat preservation and storage of hot water, 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%，Maximum temperature149℉，The built-in smart chip heats up to the temperature you set, and automatically Insulation when heated to the specified temperature.
Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Portable Mini Small Water Heater for Kitchen Bathroom RV
AIYEZIDT
Instant Water Heater
4.53 x 4.53 x 8.87 inches
Ratings for AIYEZIDT (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| LJIAW | - | ❌ | ❌ | ❌ |
Features
【INSTANT HOT WATER HEATER】With AIYEZIDT Mini tankless water heater electric 110v, you will say goodbye to long waiting time for hot water, this 110 volt water heater electric uses advanced technology to get hot water in 3 -5 seconds, no need to preheat, eliminating the long waiting time for hot water by the sink! Electric tankless water heater can reach a maximum temperature of 55°C/131°F, instant hot water is always available.
【COMPACT PORTABLE DESIGN】This small water heater electric has a compact design, perfect for spaces such as kitchens, apartments, bathrooms, RVs and camping. This on demand water heater is wall-mounted, freeing up valuable space in your home so you can enjoy hot water whenever and wherever you need it. Point of use water heater produces comfortable water temperatures for washing food, dishes, clothes, faces, hands and more.
KENUOS 4 Gallon Water Heater Under Sink Instant Hot Water Heaters 1500W 110V 120V Mini Tank,Under Counter Water Heater with Safety Vavle 1/2" NPT for Kitchen,Bathroom,Camper,RV,White
KENUOS
SY-15
13.5 x 13.5 x 13.8 Inches
10.0 pounds
Ratings for KENUOS (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| KENUOS-US | - | ❌ | ❌ | ❌ |
Features
Rapid Hot Water Supply and Recovery-Kenuos 4 gallon water heater features a 1500W heating power and an upgraded L-shaped 316 stainless steel heating tube, enabling rapid heat conduction with a thermal efficiency of up to 98%. which makes our mini tank water heater can provide hot water in as little as 8 minutes,meeting your demand for a fast water heating solution
Customer Friendly 4 Gallon Water Heater-Our under sink water heater comes equipped with a 3-way diverter valve that splits the water flow into two, meeting multi-point water supply needs.It also includes two 24 inch 3/4" ID to 1/2" ID adapter hoses, solving the problem of pipe compatibility with different regional specifications.Additionally,a temperature and pressure relief valve and mounting kit are provided, eliminating the need for you to purchase any extra accessories
Top 22
Best for Rheem
Best for Electric
Best for NG
Best for Compact
Best for 120 Volt
Best for Boiler
Best for Takagi
Best for Noritz
Best for Rheem
Best for EcoSmart
Best for FOGATTI
Best for Eccotemp
Best for AO Smith
Best for 2 GPM
Best for 4 GPM
Rheem 3.5kW 120V Point of Use Thermostatic Tankless Electric Water Heater
Rheem
RTEX-04T
3.0 x 6.0 x 6.0 inches
4.0 pounds
Ratings for Rheem (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Eagle Point [S/N Recorded] | - | ❌ | ❌ | ❌ |
| Amazon.com | - | ❌ | ❌ | ❌ |
| Valley Deals AZ | - | ❌ | ❌ | ❌ |
| Profitwise Brands | - | ❌ | ❌ | ❌ |
| eFaucets | 9,630 | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
| Columbiatradestock (S/N Info Recorded) | - | ❌ | ❌ | ❌ |
Features
ELECTRICAL REQUIREMENTS: 1 x 30 AMP Double Pole Breaker Required. Product installation hard wired to 120 volts requiring a 30-amp breaker.
SAVES SPACE: Ideal for low flow point-of-use applications, such as in a bathroom, office breakroom, wet bar, or garage. The compact size of the water heater is up to 98% smaller than a standard electric water heater.
Top 23
Ganggend 2.5 Gallon Electric Water Heater, 1500W 110V Mini Tank Under Sink Instant Hot Water Heater with Pressure Release Valve, Digital Display for Kitchen, RV, Laundry, Food Truck
Ganggend
G25
11.3 x 11.3 x 11.3 Inches
Ratings for Ganggend (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Ganggend | - | ❌ | ❌ | ❌ |
Features
Space-Saving - This 2.5 gallon electric water heater's compact design makes it ideal for tight spaces. It can be placed under sinks, under counters, in cabinets. Suitable for kitchens, bathrooms, laundry, RVs, Etc. Saves more space and is easy to use. Product dimensions:11.4"L x 11.4"H x 10.4"W.
Rapid Heating - Ganggend under sink water heater features a 1500W L-shaped heating element that maximizes heat exchange with water in its compact tank, achieving up to 99% thermal efficiency. With rapid-heat technology, it delivers hot water in as little as 6 minutes—no more long waits for instant, reliable hot water on demand.
Top 24
2.5 Gallon Mini Tank Electric Water Heater, 1500W 110V/120V, Under Sink Water Heater with Digital Display & Pressure Relief Valve, Instant Hot Water Heater for Kitchen Bathroom RV Camper
YONOOQ
S313351
11.22 x 11.22 x 11.32 inches
8.0 Pounds
High Efficiency
Ratings for YONOOQ (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Yundingxing | - | ❌ | ❌ | ❌ |
Features
Instant Hot Water, Zero Waiting:Bring endless hot water right under your sink with the YONOOQ 2.5 Gallon Mini Tank Water Heater. This compact powerhouse heats water in just 5-10 minutes, delivering on-demand hot water without modifying your existing faucet. Perfect for daily kitchen cleaning, bathroom handwashing, RV trips, or garage use—wherever hot water is needed, it's ready.
Advanced Safety, Smart Operation:Your safety is built in. This electric water heater features multi-layer protection including leak prevention, overheat auto shut-off, and dry-burn protection for complete peace of mind. The adjustable thermostat lets you precisely set water temperature from 86°F to 149°F with a simple knob turn. Once the set temperature is reached, it automatically switches to energy-saving mode, while eco-friendly polyurethane foam insulation keeps water hot longer with less energy consumption.
Electric Tankless Water Heater 110V 3000W, Under Sink Instant Hot Water Heater with Digital Display, Point of Use Portable Mini Heater for Kitchen Bathroom Sink
OVAS HOO
HME-15
7.5 x 7.5 x 9.25 inches
2.4 Pounds
Ratings for OVAS HOO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| OVASHOO | - | ❌ | ❌ | ❌ |
Features
Important Safety & Pre-Installation Notice：Be sure to read the user manual thoroughly prior to setup. Please note that trace amounts of water may be present inside the unit from factory quality testing—this is normal and does not affect performance.
Electrical & Connection Requirements：This 3000W on-demand water heater is designed for 110V systems. It must be connected to a 30A breaker using 10AWG copper wire. It comes with standard G1/2" inlet and outlet connections for easy hookup
ThermoMate Tankless Water Heater Electric for Sink Faucet, 4500W 110~120V Small Point of Use Instant Hot Water Heater CSA Approved with Temperature Display, Self-modulating, 0.85GPM at 35°F Rise
thermomate
ET045CAN4
10.95 x 10.95 x 2.52 inches
Ratings for thermomate (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ThermoMate Official | - | ❌ | ❌ | ❌ |
Features
[Instant Sink Hot Water] - 4.5kw power heating system provides on demand hot water in seconds for point-of-use applications, perfect for under / over sink faucet. Temperature range from 85°F - 131°F. 24 Hours standby. 0.26GPM-1.0GPM
[Self-modulating Power] - Regulating the amount of energy required to heat water only when you need it with 99.8% efficient. 4.5kW 120V ONLY Hardwired, requiring 40A Double Pole Circuit Breaker, 10AWG min wire size and 1/2"NPT water connections
Top 27
Best for Mini
110V Tankless Water Heater Electric, Under Sink Instant Hot Water Heater
LFEVTZ
Portable Water Heater - AB001
4.5 x 4.5 x 8.5 inches
Ratings for LFEVTZ (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| KuangShengkejiyouxiangongsi | - | ❌ | ❌ | ❌ |
Features
【Hot Water in Seconds】Skip the wait—this DOYXC electric tankless water heater 110V delivers instant hot water from 82°F to 131°F within seconds, perfect for quick sink use.
【Perfect for Small Spaces】Compact, wall-mounted design saves space and fits perfectly in kitchens, RVs, bathrooms, and portable setups. Ideal for everyday tasks like washing dishes, hands, and food.
Top 28
LECLOC Mini Tankless Instant Water Heater Under Sink 3000W 120V Plug In, LED Digital Display with Big Control Knob, IPX4, Multiple Safety Features, 30-55℃ Thermostatic On Demand Electric Water Heater
LECLOC
3kW 120Volts
7.1 x 7.1 x 9.8 Inches
Ratings for LECLOC (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| LECLOC | - | ❌ | ❌ | ❌ |
Features
Note: This 3000W 120V plug in water heater is designed for low-flow use only, not suitable for showers or multiple taps at once. The output water temperature is affected by many factors, including the water heater wattage (heating capacity), inlet water temperature and water flow. For a better warm water use experience, we recommend that you consider our higher wattage model 6500W 240V first, which is hard-wired
LED Digital Display with Big Control Knob: This point of use water heater is very easy to use. 1 knob for power ON/OFF and temperature adjustment, offering a better use experience than others 3 little touchscreen buttons. You can adjust the temperature between 30℃ and 55℃
Top 29
Electrolux 8kW Tankless Water Heater Electric 240v Under Sink
Electrolux
8kW
2.5 x 2.5 x 8.1 inches
Ratings for Electrolux (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Electrolux Home Comfort Direct | - | ❌ | ❌ | ❌ |
Features
𝐈𝐧𝐬𝐭𝐚𝐧𝐭 𝐇𝐨𝐭 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫 24𝟎𝐕: On Demand Water Heater No waits! 8kW heating tech delivers stable, continuous flow ideal for handwashing, dish rinsing, and sink use – no preheating tanks needed. With a 77°F temperature rise, it provides 1.97 GPM and a maximum temperature of 104°F
𝐔𝐧𝐝𝐞𝐫 𝐒𝐢𝐧𝐤 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫: Fits tight spaces (6.9"x8.1"x2.5") with 1/2" NPT connections. Requires only one dedicated 40A circuit – DIY-friendly setup! takes up 90% less space than traditional water heaters
Top 10 Under Sink Water Heaters - Verified to Buy (September 2026)
- 1. KENUOS Under Sink Instant Hot Water Heater 2.5 Gallon Water...
- 2. KENUOS Under Sink Instant Hot Water Heater,2.5 Gallon Mini Tank...
- 3. KENUOS 4 Gallon Water Heater Under Sink Instant Hot Water...
- 4. 110V Tankless Water Heater Electric, 3000W Tankless Electric Water Heater...
- 5. Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater,...
- 6. Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5)...
- 7. thermomate Mini Tank Electric Water Heater ES250 2.5 Gallons Point...
- 8. thermomate Mini Tank Electric Water Heater ES150 1.3 Gallons Point...
- 9. Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under...
- 10. 110V Tankless Water Heater Electric, YIHUIBF 3000W Tankless Electric Water...
Top 10 Under Sink Water Heaters Brands on Amazon
Here is the list of top-rated brands that were evaluated by CherryPicks.
- KENUOS
- xwdzswgs
- Bosch
- thermomate
- YIHUIBF
- GE
- FIPEUN
- LFEVTZ
- ECOAPTUNIT
- Westinghouse
Related Under Sink Water Heaters Guides
For more personalized Under Sink Water Heaters guides, Check those pages,
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Top 8 Under Sink Water Heaters Sellers: CPR Seller Rank List
CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.
- 1. eFaucets : 7,050 Yearly Feedback , Avg. Ratings 4.4
- 2. Amazon.com : 386 Yearly Feedback , Avg. Ratings 4.7
- 3. ThermoMate Official : 371 Yearly Feedback , Avg. Ratings 4.7
- 4. Ganggend : 347 Yearly Feedback , Avg. Ratings 4.9
- 5. thermoflow : 303 Yearly Feedback , Avg. Ratings 4.7
- 6. Westinghouse Home Comfort Direct : 265 Yearly Feedback , Avg. Ratings 4.8
- 7. THMOS : 163 Yearly Feedback , Avg. Ratings 4.8
- 8. Columbiatradestock (S/N Info Recorded) : 161 Yearly Feedback , Avg. Ratings 4.6
| Rank | Name | Yearly Feedbacks | Avg. Ratings |
|---|---|---|---|
| 🥇 | eFaucets | 7,050 | 4.4 |
| 🥈 | Amazon.com | 386 | 4.7 |
| 🥉 | ThermoMate Official | 371 | 4.7 |
| 4 | Ganggend | 347 | 4.9 |
| 5 | thermoflow | 303 | 4.7 |
| 6 | Westinghouse Home Comfort Direct | 265 | 4.8 |
| 7 | THMOS | 163 | 4.8 |
| 8 | Columbiatradestock (S/N Info Recorded) | 161 | 4.6 |
[Get] Under Sink Water Heaters Deals (✅Exclusively for Prime)
What does "Amazon Fulfilled" Mean?
Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.
When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.
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Prime members also have access to other benefits, including 2-Day Shipping, Exclusive Member Deals, Prime Video, Buy With Prime, Amazon Music, Prime Gaming, and more.
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What does "Free Shipping" Mean?
"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.
Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.
Why Should You Trust Us?
Now hundreds and thousands of Rough Plumbing supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best Under Sink Water Heaters to buy for new September 2026?
CherryPicks’s Methodology for Evaluating Under Sink Water Heaters
We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Rough Plumbing items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.
We collected and analyzed 306 of Under Sink Water Heaters reviews based on our selection criteria. It helped us shortlist the top qualified and rated Under Sink Water Heaters for Rough Plumbing, We found that most customers choose Under Sink Water Heaters with an average price of $144.37, and the top brands are GE, Generic, Westinghouse, Electrolux, Rheem, thermomate And Ganggend.
Then our expert-level editors reviewed all those quality items and selected the top 29 Under Sink Water Heaters for you, We have researched hundreds of sellers and picked the top sellers for Rough Plumbing, including Amazon Resale, eFaucets, Amazon.com, ThermoMate Official, Ganggend, thermoflow, Westinghouse Home Comfort Direct, THMOS, Columbiatradestock (S/N Info Recorded) And Yundingxing. The KENUOS Under Sink Instant Hot Water Heater 2.5 ... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 109 consumers with an average rating of 4.1.
We've helped a lot of satisfied users get the right Tools & Home Improvement product based on their needs, and save lots of time for them to pick Under Sink Water Heaters to buy.
Hunter Lambrick is a contributing writer on the Cherrypicksreview platform who specializes in writing articles on outdoor events and home tool products. He has been doing this for a while now and has developed a wealth of experience in it.