20 Best Under Sink Water Heater [2024]

Are you looking for the best under sink water heater? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling under sink water heater.

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1 Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot... Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot...
2 LQWY Mini Electric Tankless Water Heater 3000W 110V Instant Hot Water Heater with Remote Control... LQWY Mini Electric Tankless Water Heater 3000W 110V Instant Hot Water Heater with Remote Control...
3 Tankless Water Heater - 3000W Mini Electric Instant Water Heater Under Sink with LCD Display for... Tankless Water Heater - 3000W Mini Electric Instant Water Heater Under Sink with LCD Display for...
4 Ariston Andris 2.5 Gallon 6-Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater Ariston Andris 2.5 Gallon 6-Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater
5 Stiebel Eltron 233219 2.5 gallon, 1300W, 120V SHC 2.5 Mini-Tank Electric Water Heater Stiebel Eltron 233219 2.5 gallon, 1300W, 120V SHC 2.5 Mini-Tank Electric Water Heater
6 Water Heater, Tankless Electric Water Heater Portable Wall Mount Instant Heating Hot Water With LCD... Water Heater, Tankless Electric Water Heater Portable Wall Mount Instant Heating Hot Water With...
7 110V-120V 1.5Kw Electric Tank Hot 2.5 Gallon Water Heater Storage,Small Under Sink Counter RV TR... 110V-120V 1.5Kw Electric Tank Hot 2.5 Gallon Water Heater Storage,Small Under Sink Counter RV...
8 Camplux Tankless Water Heater Electric with LED Display 120V Instant Water Heaters Under Sink 3.5kw... Camplux Tankless Water Heater Electric with LED Display 120V Instant Water Heaters Under Sink...
9 thermomate Mini Tank Electric Water Heater ES250 2.5 Gallons Point of Use No Wait for Hot Water... thermomate Mini Tank Electric Water Heater ES250 2.5 Gallons Point of Use No Wait for Hot Water...
10 3000W Tankless Mini Hot Water Heater Under Sink 110V Thermostatic Washing Heating System with Remote... 3000W Tankless Mini Hot Water Heater Under Sink 110V Thermostatic Washing Heating System with...
11 Instant Hot Water Heater 3000W Tankless Mini Water Heater Under Sink 110V Thermostatic Washing... Instant Hot Water Heater 3000W Tankless Mini Water Heater Under Sink 110V Thermostatic Washing...
12 Thermoflow UT10 2.5 Gallons 110~120V Corded Electric Mini Tank Water Heater for Under Sinks 110V ~... Thermoflow UT10 2.5 Gallons 110~120V Corded Electric Mini Tank Water Heater for Under Sinks 110V...
13 Camplux ME25 Mini Tank Electric Water Heater 2.5-Gallon with Cord Plug,1.5kW at 120 Volts Camplux ME25 Mini Tank Electric Water Heater 2.5-Gallon with Cord Plug,1.5kW at 120 Volts
14 Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water Heater,... Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water...
15 Electric Tankless Water Heater 220/240V,Endless Hot Water Instant Mini Smart Self-Modulating No... Electric Tankless Water Heater 220/240V,Endless Hot Water Instant Mini Smart Self-Modulating No...
16 vinmax 2021 Hot Tankless Water Heater,110V Electric Hot Water Heater - Kitchen Household Electrical... vinmax 2021 Hot Tankless Water Heater,110V Electric Hot Water Heater - Kitchen Household...
17 Tankless Water Heater Electric 5.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital... Tankless Water Heater Electric 5.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital...
18 EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating... EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating...
19 Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
Bestseller No. 1
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot...
  • 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...
  • 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...
  • INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
  • FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
  • EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at...
Bestseller No. 2
LQWY Mini Electric Tankless Water Heater 3000W 110V Instant Hot Water Heater with Remote Control...
  • INSTANT HOT WATER HEATER - Applied with 5500W heating system, the electric tankless water heater supplies instant hot water, 5-10 seconds to get hot...
  • REMOTE CONTROL OR TOUCH SCREEN - Ultra slim and smooth appearance design, beautiful and elegant. The temperature can be adjusted by remote control and...
  • SAVE SPACE AND ENERGY - Compact design, our tankless Hot Water Heater is only the size of a small suitcase, and the wall-mount design frees up...
  • EASY TO INSTALL - The home water heater has a mini body, easy to install in the bathroom, kitchen, and under the sink.Standard 1/2 interface(inflow or...
  • SAFE TO USE - With high temp protection, dry heating protection, and electrical leakage protection you can rest easily knowing you have safe,...
SaleBestseller No. 3
Tankless Water Heater - 3000W Mini Electric Instant Water Heater Under Sink with LCD Display for...
  • 【Eastbuy TANKLESS WATER HEATER 】 NOTICE Before PURCHASE: The water heater need a larger than 32 amps circuit breaker; the outlet water temperature...
  • 【SMART SELF ADJUSTMENT】Temperature adjustment is through the water flowing valve or the tap. The water flow is large and low in water. The...
  • 【SAFE AND DURABLE】Applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Inner water and electricity...
  • 【ECO & ELECTRIC & WATER SAVING】 Safe heater, save up to 55% on your electric cost, water saving, no pollution, no exhaust gas.The heating of the...
  • 【USE EXPERIENCE】30-55℃ (Considering the use environment in severe cold areas may not reach the maximum temperature of 55℃) .When the inlet...
SaleBestseller No. 4
Ariston Andris 2.5 Gallon 6-Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater
  • Compact design; wall or floor mounted (wall bracket included)
  • Provide immediate hot water at the point of use; install as booster or standalone
  • Easy installation; installs right at the point of use with water connection and standard 110/120 Volt outlet
  • 6-year limited warranty on tank, 2-year warranty on parts
  • TitanShield exclusive technology that fully protects inner surface against corrosion; robust environmentally safe insulation increases energy...
SaleBestseller No. 5
Stiebel Eltron 233219 2.5 gallon, 1300W, 120V SHC 2.5 Mini-Tank Electric Water Heater
  • Plugs into standard 120 volt outlet
  • T and P valve included
  • Wall-mounted with included bracket
  • Glass-lined tank and fast recovery
  • 6-Year warranty on tank
Bestseller No. 6
Water Heater, Tankless Electric Water Heater Portable Wall Mount Instant Heating Hot Water With LCD...
  • 💦【SPECIFICATIONS】Rated voltage: 110V Rated power: 3000W Plug: American plug current: 25-32A Heating material: 304 stainless steel Water...
  • 💦【SAFETY DESIGN】The heater has leakage protection, IPX4 waterproof design, dry heat protection, water and electricity isolation, automatic...
  • 💦【STANDARD 1/2 INTERFACE】Standard 1/2 interface, which can be directly connected to household conventional hose connectors/faucet metal...
  • 💦【LCD DISPLAY】Stainless steel housing, with LCD digital temperature display, the unit is Celsius °C. The water temperature can be adjusted...
  • 💦【PROFESSIONAL SERVICE】If you have any questions or if you receive unqualified or damaged products, please contact us timely and we will handle...
Bestseller No. 7
110V-120V 1.5Kw Electric Tank Hot 2.5 Gallon Water Heater Storage,Small Under Sink Counter RV TR...
  • 【SAFE DURABLE & LONGEVITY】Made of stainless steel and never rust,Anti-leakage plug,Multiple safety protection functions protect you from the...
  • 【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...
  • 【EASY TO USE】storage tank electric water heater with easy-to-operate knob temperature adjustment design,Easy to control warmth.Vent valve, Tee...
  • 【FAST RECOVERY RATE】Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a...
  • 【COMPACT DESIGN】Can be shelf, wall or floor mounted (Water inlet and outlet upward); Dimensions: 13.0''L x11.4''W x10.6''H; 9.5lbs; 1/2″NPT NPT....
Bestseller No. 8
Camplux Tankless Water Heater Electric with LED Display 120V Instant Water Heaters Under Sink 3.5kw...
  • Smart&Considered Design: Small water heater designed with smart touch control & LED display, mini size, perfect for under sink installation. The...
  • Multi-angled Mounting: The compact size instant electric water heater requires a connection of 1* 40A circuit breaker & 8 AWG wire. Install close to...
  • Reliable&Durble: The 3.5kW tankless water heater comes with 5 protections. NFS approved, offer lead-free water. ETL safety certified, leakage and...
  • Consistent Hot Water -On demand water heater only heats the water when you need it and no waiting for preheat.The temperature rise of 1.0 GPM is...
  • Rotatable LED Display: 120V tankless water heater features an upgrade rotatable digital temperature display and touch control panel, show you the easy...
Bestseller No. 9
thermomate Mini Tank Electric Water Heater ES250 2.5 Gallons Point of Use No Wait for Hot Water...
  • 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...
  • Easy Installations - Dimensions 12.95"W x 12.95"H x 11.5"D compact design, can be wall or floor mounted under sink / counter, plug into a standard...
  • Adjustable Temperature - Thermostat with 3 temperature level settings, range from 50°F to 149°F with high temperature limit protection, also a...
  • Premium Quality & Durable - Enamel Coating Glass-lined tank for great insulation and preventing leaking, CSA T&P Relief valve CASH USA made, UL...
  • Specifications and Warranty - Dimensions: 12.95"H x 12.95"W x 11.5"D; Weight: 15.4 lbs; Water connections: 1/2" NPT, Electrical requirements: 1.44 kW...
Bestseller No. 10
3000W Tankless Mini Hot Water Heater Under Sink 110V Thermostatic Washing Heating System with Remote...
  • 【Safe to Use】Our tankless electric water heaters have been rigorously tested and have multiple protection functions: water and electricity...
  • 【Instant Heating & Constant Temperature】3000W high-efficiency output mini water heater, fast heating in 3 seconds, constant temperature to...
  • 【Easy to Install】The home water heater has a mini body, easy to install in the bathroom, kitchen, and under the sink.Standard 1/2 interface(inflow...
  • 【Application】Large color digital display,comfortable water temperature, suitable for shower, washing food, bowls, clothes, face, hands, etc.
  • 【Health Care】Washing hands and face frequently with hot water can effectively prevent various diseases such as colds and make the body healthier....
Bestseller No. 11
Instant Hot Water Heater 3000W Tankless Mini Water Heater Under Sink 110V Thermostatic Washing...
  • 【Safe to Use】Our tankless electric water heaters have been rigorously tested and have multiple protection functions: water and electricity...
  • 【Instant Heating & Constant Temperature】3000W high-efficiency output mini water heater, fast heating in 3 seconds, constant temperature to...
  • 【Easy to Install】The home water heater has a mini body, easy to install in the bathroom, kitchen, and under the sink.Standard 1/2 interface(inflow...
  • 【Application】Large color digital display,comfortable water temperature, suitable for shower, washing food, bowls, clothes, face, hands, etc.
  • 【Health Care】Washing hands and face frequently with hot water can effectively prevent various diseases such as colds and make the body healthier....
Bestseller No. 12
Thermoflow UT10 2.5 Gallons 110~120V Corded Electric Mini Tank Water Heater for Under Sinks 110V ~...
  • ➤ Eliminate Wait for Hot Water - 2.5 gallons small tank water heater fits under your sink to provide instant hot water right where you need it....
  • ➤ Save Energy - With Advanced Thermostop Technology of Germany resulting Low stand-by loss power consumption. Stop heating or reheating...
  • ➤ Maintenance Free - Stainless Steel Tank do not need anodes, resistance to corrosion from water, lighter, stronger, more durable and withstand...
  • ➤ SAFE & RELIABLE - Overheating protection, auto cut-off electricity if not hot water come out, IPX24 water proof, 2.6ft plug in cord, suit for...
  • ➤ NOTES - Please verify that this model is the right size for your hot water needs and electrical requirements before purchase & installation....
Bestseller No. 13
Camplux ME25 Mini Tank Electric Water Heater 2.5-Gallon with Cord Plug,1.5kW at 120 Volts
  • Saving Energy & Money - Built in insulation foam, reduces heat loss. 2.5-gallon point-of-use mini-tank fits under your sink to provide hot water right...
  • High Quality Built & Elegant Design- Camplux electric water heater has glass-lined tank for long service life and easy to maintain. Elegant streamline...
  • UL Approval Safety - Thermostat Control allows adjustment of water temperature. High Limit device provide protection while overheating.
  • 43.3‘’ cord plugs into 120 volt outlet for independent installation or in-line with a large hot water source.(Max. water pressure is 150 PSI, CSA...
  • Can be shelf, wall or floor mounted ; Simply tap into the cold water line and install the water heater directly at the sink to provide hot water....
Bestseller No. 14
Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water Heater,...
  • ELECTRIC TANKLESS WATER HEATER: 9.5 kW under-sink tankless water heater designed to provide an endless supply of instantaneous hot water to one or...
  • FLEXIBLE INSTALLATION: Can be installed in a 360 degree orientation so you can position the unit in tight under counter spaces for a flexible,...
  • EFFICIENT DESIGN: Ultra compact and lightweight design with 98% efficiency and no stand-by heat loss plus does not require a temperature or pressure...
  • DURABLE PLASTIC CONSTRUCTION: Roundagon Bosch DNA design provides a modern look that blends in seamlessly with existing decor when installed in a...
  • IDEAL SIZE: Measures 6.6" x 12.8" x 2.9", making it the perfect size for light commercial applications such as shopping malls, airports, stadiums and...
Bestseller No. 15
Electric Tankless Water Heater 220/240V,Endless Hot Water Instant Mini Smart Self-Modulating No...
  • NOTE: Due to the negligence of the workers, some water heaters have no manuals, please contact customer service if necessary, and the customer service...
  • Since each product has been quality tested before leaving the factory, a small amount of water remains inside each water heater!
  • 【ENDLESS WATER HEATER】3 seconds to get hot water without preheating. Instant consistent and endless hot water of the maximum temperature reach to...
  • 【SMART INVERTER FOR ENERGY SAVING】The hot water heater built-in smart chip to scientifically calculate the minimum required power based on the...
  • 【SAFE DURABLE & LONGEVITY】Multiple safety protection functions protect you from the risk of scald, leakage or other injury. Premium PE shell is...
SaleBestseller No. 16
vinmax 2021 Hot Tankless Water Heater,110V Electric Hot Water Heater - Kitchen Household Electrical...
  • ✅【Electric Water Heater】- The Temperature can be adjusted between 55℃-75℃ optionally, and the power will be off automatically when the set...
  • ✅【 Instant Hot Water Heater Under Sink】- Its total power is 1500w and it has multiple installation methods. It is applicable for different water...
  • ✅【Rv Tankless Water Heater】- This mini tankless water heater electric 110v product uses green environmental material, which is qualified for...
  • ✅【Water Heater Blanket】- This water pre heater is a lightweight electric water heater with a perfect combination of inner quality and classical...
  • ✅【Water Heater Electric】- It can be installed in the kitchen, rest room, bathroom or any other places you want optionally because of its...
Bestseller No. 17
Tankless Water Heater Electric 5.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital...
  • 【INSTANT & SUFFICIENT HOT WATER】Applied with 5.5KW heating system, the electric water heater supplies instant, consistent and endless hot water of...
  • 【SMART SELF ADJUSTMENT】The hot water heater adjusts power input based on flow rate and temp setting in real time. For example, less power will be...
  • 【CONVENIENT USE】The tankless water heater comes with digital display & touch control panel so temp setting is easy job. Now turn on the tap and...
  • 【SAFE and DURABLE】Applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Inner water and electricity...
  • 【POINT of USE】The sleek tankless water heater is compact as an oatmeal box, making it possible to install anywhere close to outlet and avoid...
SaleBestseller No. 18
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating...
  • Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow...
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use;...
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that...
  • EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and...
Bestseller No. 19
Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
  • Can provide hot water for one sink at 0.5 GPM in warmer climates
  • Requires 1 x 30 amp breaker and 10 AWG wire
  • For one sink at 0.5 GPM in colder climates the POU 6 is recommended
  • Amperage Draw 29 amp. kW - 3.5 kW
  • Connection Fittings 1/2" NPT

Having trouble finding a great under sink water heater?

This problem is well understood by us because we have gone through the entire under sink water heater research process ourselves, which is why we have put together a comprehensive list of the best under sink water heaters available in the market today.

After hours of searching and using all the models on the market, we have found the best under sink water heater for 2023. See our ranking below!

How Do You Buy The Best Under Sink Water Heater?

Do you get stressed out thinking about shopping for a great under sink water heater? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching under sink water heater, which is why we have assembled a comprehensive list of the greatest under sink water heater available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for under sink water heater that you consider buying. Your questions might include the following:

  • Is it worth buying an under sink water heater?
  • What benefits are there with buying an under sink water heater?
  • What factors deserve consideration when shopping for an effective under sink water heater?
  • Why is it crucial to invest in any under sink water heater, much less the best one?
  • Which under sink water heater are good in the current market?
  • Where can you find information like this about under sink water heater?

We’re convinced that you likely have far more questions than just these regarding under sink water heater, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for under sink water heater, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible under sink water heater. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an under sink water heater buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available under sink water heater currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of under sink water heater has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an under sink water heater?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your under sink water heater.
  5. Customer Ratings: Number ratings grade under sink water heater objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their under sink water heater.
  7. Product Quality: You don’t always get what you pay for with an under sink water heater, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an under sink water heater is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining under sink water heater information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding under sink water heater is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: Who makes the best water heater?

A: Largest Water Heater Manufacturers. By market share,the water heater industry is dominated by a handful of brands. … Top Rated Water Heater Manufacturers. Consumer Reports offers a slightly altered list of top rated manufacturers based on sales,performance and variety. Tips for Buying Efficiently. … Performance vs. …

Q: What makes for the best water heater?

A: – Comes with a smart look – Impressive flow rate for the water – Comes with great quality for the construction

Q: What is the best residential tankless water heater?

A: IN A HURRY? … 10 Best Electric Tankless Water Heaters Reviewed 1. … Tankless Water Heater Systems Buying Guide Activation Flow Rates Tankless Electric Water Heater Models Manufacturer’s warranty offer Energy efficiency or low energy cost rating Demand for usage Type of electric … Tankless Electric Water Heater Vs. …

Q: Why should I buy a tankless water heater?

A: May not provide you with adequate GPM if you reside in extremely cold climatic conditions A tankless heater can be a great choice for newly built homes but things may turn out to be a pricey affair,in case,you want to install the unit … Furthermore,in order to reap maximum benefits out of your tankless unit,you need to do the sizing perfectly