Best Tankless Water Heater For Kitchen Sink

Peter | 31-12-2025

You will find our hand-picked selection of Best Tankless Water Heater For Kitchen Sink below. You have a wide variety of choices of brands such as xwdzswgs,thermomate,Green Point Home,Generic,JHiveGym available to you as a result of the fact that each one of them has a unique pricing, look, and feel. Continue reading for an in-depth analysis in our Best Tankless Water Heater For Kitchen Sink buying guide!

Our experts tested a variety of Best Tankless Water Heater For Kitchen Sink on the market. Right at the top of the list is xwdzswgs Best Tankless Water Heater For Kitchen Sink. Check out some more of our favorites below, and read some valuable insight from our experienced editors.

Editor's Choice
Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater
Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater
Premium Pick
Under Sink Electric Tankless Water Heater 3000W, 110V Instant Hot Water Heater with Digital Display,
Under Sink Electric Tankless Water Heater 3000W, 110V Instant Hot Water Heater with Digital Display,
Budget Pick
ZOOTEALY Mini Tankless Water Heater Electric 3KW 110V: Point of Use Hot Water Heater Under Sink on
ZOOTEALY Mini Tankless Water Heater Electric 3KW 110V: Point of Use Hot Water Heater Under Sink on

Top 10 Best Tankless Water Heater For Kitchen Sink

We researched and compared the top products in the Best Tankless Water Heater For Kitchen Sink category to provide you with these recommendations.

1. Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater

Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater
9.8

Xwdzswgs

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  • 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.
  • SAFETY INTELLIGENCE RELIABLE - This under sink hot water heater has multiple protection functions. Water and electricity isolation, IPX4 waterproof, leakage protection, dry boil protection, and automatic power off under overheating and inactivity. Prevent leakage and water pipe corrosion. The thermal efficiency of instant hot water heater is as high as 98%, allowing you to enjoy hot water at any time and save energy.
  • EASY TO INSTALL AND APPLICATION - Our instant hot water heater under sink compact design, it is very suitable for every corner of your home. This 110 volt water heater comes with premade fixing screw holes, an English manual, and 1/2 inch NPT standard interface. This small water heater is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. TIP: Install vertically to avoid malfunction of the heating elements (E2).
  • IMPORTANCE FOR INSTALLATION - The 110v water heater is vertical installation only, no horizontal installation is allowed, to avoid malfunction of the heating elements (E2). The electric tankless water heaters tighten the pipe connectors with Teflon tape to prevent a short circuit (E2). This tankless hot water heater is recommended to be connected with wires with a cross-sectional area of 2.5 square millimeters, and connected to trip switches of over 32a for use.
  • OUTSTANDING CUSTOMER SERVICE - 30-day money-back guarantee for any reason. 24-month warranty for quality-related issues. We provide up to 8 free accessory replacements for your tankless hot water heater electric. This 110v tankless water heater electric can be used for an unlimited time. If you have any questions about our small electric water heater, please make sure to tell us first, and we will provide satisfactory solutions. Thanks for choosing our best 110v tankless water heater.

2. Tankless Water Heater Electric 120V, ThermoMate 3500W Small On Demand Instant Hot Water Heater with

Tankless Water Heater Electric 120V, ThermoMate 3500W Small On Demand Instant Hot Water Heater with
7.7

Thermomate

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  • [Instant Sink Hot Water] - 3500W power heating system provides on demand hot water in seconds for under / over sink faucet. Temperature setting range from 86F - 131F. 0.4GPM-0.66GPM. MUST HARD WIRED, NO PLUG. Drawing only 110-120 Volts
  • [Self-modulating Power] - On demand water heater automatically adjust the power based on the change of inlet water flow and temperature, saving up to 50% energy consumption and preventing over-heating
  • [Long-lasting Quality] - Cast aluminum heating element separated from water line, significantly reducing scale, corrosion and mineral buildup. SUS 304 stainless steel water tube
  • [Sleek Compact Size] - 7.9" x 6.4" x 2.5", Small water heater fit in tight places within your home or business, like under cabinets and sinks, hair salons, bar counters and hotel receptions, saving valuable storage space
  • Touch control panel and digital temperature display allowing adjustment in 1 increment. Standard 1/2"NPT pipe fitting, pre-wired pigtail for easy installation, ETL Certified
  • Important Note - Please verify this unit is the right size for you: 3.5kW 120V ONLY Hardwired, requiring 32A Double Pole Circuit Breaker, 10AWG min wire size and 1/2"NPT water connections

3. Under Sink Electric Tankless Water Heater 3000W, 110V Instant Hot Water Heater with Digital Display,

Under Sink Electric Tankless Water Heater 3000W, 110V Instant Hot Water Heater with Digital Display,
9.1

Green Point Home

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  • Under-Sink Installation & Compact Size: Designed specifically for under sink installation, this space-saving unit fits neatly in cabinets to provide hot water directly to your kitchen faucet
  • Instant On-Demand Hot Water: As a true instant water heater, it delivers continuous hot water on demand within seconds, eliminating the wait and energy waste of a storage tank
  • Portable & Simple Electric Design: This portable electric water heater operates on standard 110V household current, offering a versatile heating solution for various points of use
  • Efficient Tankless Technology: Utilizing advanced tankless water heater technology, it heats water only when needed, providing an energy-efficient and endless hot water supply
  • Safe Operation with Digital Control: Features a clear digital display for monitoring. Built-in safety protections include anti-dry burning and overheat prevention for peace of mind
  • Easy Connection & Durable Build: Equipped with standard G1/2 water connections and corrosion-resistant brass interfaces. Constructed with a 304 stainless steel lining for long-lasting durability
  • Straightforward Setup & Use: For optimal performance, install vertically. The water temperature is intuitively adjusted by varying the flow rate at your faucet

4. Generic Tankless Water Heater Electric, Instant Hot Water Heater Under Sink, 3000W 110V On Demand

Generic Tankless Water Heater Electric, Instant Hot Water Heater Under Sink, 3000W 110V On Demand
7.7

Generic

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  • With 3000W power, the water heater can raise the water by 45 F(0.3GPM) /27 F(0.5GPM) in seconds. You can adjust the water flow to meet your outlet temperature requirement. The Larger water flow, the lower outlet temperature; The smaller water flow, the higher outlet temperature. Not Suitable for Shower(Shower normally requires at least 1.8 gpm). You can set Fahrenheit or Celsius degrees by holding power button for 6 seconds.
  • IMPORTANT PRE-PURCHASE NOTES: This device with a power of 3000W at 110V draws a maximum current of 27A. (1) Before installation, please verify whether your socket can withstand such a high current. (2) Please check if your circuit breaker can handle this high-current load in addition to the existing electrical appliances. (3) The recommended wire gauge is 10AWG, and the water connection is G1/2.
  • Premium material: 304 stainless steel lining, 316L stainless steel heating pipe, sturdy ABS shell, uni-corrosion brass interface. IPX4 waterproof, dry burning protection, leakage protection, and overheating protection upgrade safety level
  • Automatic standby mode ensures that you enjoy heated water at any time. One-touch operation provides convenience.
  • This mini water heater is ideal for limited spaces such as kitchens, apartments, bathrooms, RVs. Not Suitable for Shower(Shower normally requires at least 1.8 gpm)
  • IMPORTANCE for installation: 1. Install vertically to avoid malfunction of the heating elements (E2); 2. Tighten the pipe connectors with Teflon tape to prevent a short circuit (E2).

5. Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water

Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water
8.5

Xwdzswgs

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  • 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 (28C) (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).
  • LIGHTWEIGHT PORTABLE DESIGN - This small water heater compact design, is suitable for installation in the bathroom, kitchen under the sink, etc. The on demand water heater adopts a wall-mounted design, freeing up valuable space for your home, enjoy hot water at any time. This instant hot water heater under sink qualifies for ETL standard, you can expect the outstanding performance of this point of use water heater in the coming years.
  • EASY TO INSTALL AND APPLICATION - This under sink instant water heater comes with premade fixing screw holes, an English manual, and 1/2 inch NPT standard interface. This small electric water heater is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. The comfortable water temperature generated by this 110V water heater is suitable for cleaning food, bowls, clothes, face, hands, etc.
  • QUALITY WARRANTY & IMPORTANT NOTE - We provide a 24-month warranty for the electric water heater tankless. If you encounter any after-sales issues regarding the small hot water heater, you can always contact our electric tankless water heaters support team. Tip: This electric hot water heater is recommended to be connected with wires with a cross-sectional area of 2.5 square millimeters, and connected to trip switches of over 32a for use.

6. Under Sink Tankless Water Heater, Electric, 110V/120V, Point of Use, Instant Hot Water, Compact

Under Sink Tankless Water Heater, Electric, 110V/120V, Point of Use, Instant Hot Water, Compact
8.5

Jhivegym

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  • Safety and Intelligence: JHiveGym tankless water heater adopts a safe, beautiful, durable, intelligent, ultra-thin and smooth appearance design, which is beautiful and elegant, with simple and direct LCD digital display, intelligent self-inspection, and automatic inspection of working status and performance to ensure safety.giving you the perfect experience of comfort and relaxation.
  • Energy Saving: Electric water heater adopts frequency conversion design, which automatically adjusts the power input according to the flow and temperature settings. When the water flow is reduced, the system will consume the least electricity, effectively reducing energy waste, No preheating is required to avoid heat loss during long-term preheating. Save both energy and time.
  • Safe and Reliable: The instant hot water heater has a memory function or an automatic alarm function when the power supply position and failure occur. IPX24 waterproof, leakage protection, dry-burning protection, automatic power-off in over-temperature and inactive states.Setting withstand 1500V insulation
  • Convenience: Multiple gear options, digital display gear and water temperature, easy to adjust, meet seasonal needs, no need to store water, no need to heat or keep warm in advance, hot water can be used as soon as it is turned on, no need to wait,Tankless water heater can keep water out of the water within 24 hours, Energy saving and environmental protection.
  • Space Saving: This water heater has a compact appearance, which is very convenient to install in the bathroom, kitchen and under the sink, etc. where it is needed in the home, it is very suitable for every corner of your home, no need to occupy an area, enjoy hot water at any time. Make sure it's the right size for you: 4.5KW at 110V, product measures 7.5" x 2.5" x 11".

7. APUS Tankless Water Heater Electric 240V, 4500W Instant On Demand Hot Water Heaters, Under Sink

  • Instant Endless Hot Water: APUS 4.5KW tankless electric water heater delivers hot water in 3 secondsno preheating or waiting! With a temperature range of 85F131F, enjoy consistent, on-demand hot water for sinks, kitchens. Perfect for single-point use, it eliminates standby energy loss and wasteful tank storage.
  • Smart Energy Efficiency: Our self-modulating technology adjusts power (99.8% efficiency) based on water flow and temperature, reducing energy waste. Unlike traditional heaters, APUS only heats water when needed, saving up to 50% on electricity billsno more paying to keep a tank warm.
  • Touch Control & Compact Design: Adjust water temperature with precision using the LED touchscreensimple, responsive, and user-friendly. The ultra-slim design (8.7" x 6.5" x 2.6") fits effortlessly under sinks, or cramped spaces, making it ideal for apartments, kitchens, bathrooms, and commercial setups like salons or cafes. No wasted space, no clutterjust instant hot water where you need it.
  • The APUS tankless water heater is engineered for safe, reliable operation with built-in overheating protection, dry-burn prevention, and anti-leakage technology. Its advanced internal shockproof system (anti-electric wall design) ensures extra safety by preventing electrical hazards. The high-quality cast aluminum heating element enhances durability while resisting corrosion and scale buildup, delivering long-lasting performance and peace of mind.
  • Easy Installation & Reliable Support: Easy Installation & Reliable Support: Pre-drilled holes and 1/2" NPT fittings simplify setup. Hardwired for 240V (requires 30A double-pole breaker + 12AWG wire). Backed by 24/7 customer service for worry-free ownership.

8. Tankless Electric Water Heater 110V 3000W, Instant Hot Water System with LED Digital Display,

  • INSTANT HOT WATER ON DEMAND This 110V tankless electric water heater delivers continuous hot water in seconds. With 3000W power, it heats water up to 131F (0.5 GPM) instantly, no preheating required. Switch between Fahrenheit and Celsius by holding the power button for 6 seconds.
  • COMPACT & ELEGANT DESIGN Made with a slim ABS housing and LED digital display, this mini under sink water heater fits perfectly in kitchens, bathrooms, RVs, and apartments. Note: Not suitable for showers (requires 1.8 GPM).
  • SAFE & RELIABLE PERFORMANCE Built with advanced protection: water-electricity separation, IPX4 waterproof rating, leakage protection, dry heating prevention, and auto power-off for overheating or inactivity. High thermal efficiency (98%) saves energy while ensuring safety.
  • EASY INSTALLATION Includes 1/2 inch NPT standard interface, premade screw holes, and English manual. Designed for vertical installation only. Perfect for point-of-use applications like sinks, hand wash stations, RVs, and camping.
  • IMPORTANT INSTALL TIPS Vertical installation only (avoid E2 malfunction). Use Teflon tape for pipe connectors to prevent leaks/short circuits. Recommended wire size 2.5mm with 32A breaker.
  • GUARANTEED SERVICE & WARRANTY Backed by 30-day money-back, 24-month warranty, and up to 8 free accessory replacements. Our dedicated customer service team is ready to assist. A reliable choice for your kitchen, bathroom, or RV hot water needs.

9. DOYXC Tankless Water Heater Electric 110V, 3000W Under Sink Instant On Demand Hot Water Heater,

  • INSTANT HOT WATER HEATERWith DOYXC 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 55C/131F, instant hot water is always available.
  • SAFETY INTELLIGENCE RELIABLEThis under sink water heater electric has multiple protection features. ipx4 waterproof, leakage protection, dry burning protection, super mild and automatic power off in non-working condition. Tankless hot water heater with LCD digital display, intelligent detection of working status and performance to ensure safety.
  • COMPACT PORTABLE DESIGNThis 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.
  • EASY INSTALLATION & IMPORTANT NOTESThis on demand hot water heater electric has a simple design and is quick and easy to install, saving time and labor. Our instant water heater under sink comes with pre-fabricated set screw holes, English instructions and 1/2 inch NPT standard connections. TIP: Electric water heater wiring requires 2.5mm (13AWG) with a circuit breaker 32AMP.
  • ENERGY EFFICIENTThe instant hot water heater under sink utilizes a variable frequency design that automatically adjusts the input power according to the flow rate and temperature settings. Unlike tank-type water heaters, Electric water heater tankless have a thermal efficiency of up to 99%. When the water flow rate decreases, the system will consume the least amount of electricity, effectively reducing energy waste.
  • CONVERTIBLE TEMPERATURE SCALEThe tankless hot water heater electric is available in either Celsius or Fahrenheit. Turn on your instant water heater and press the on/off button for a few seconds to switch between Celsius and Fahrenheit, allowing you to monitor the water temperature on the scale that best suits you.
  • QUALITY GUARANTEEWe offer a 24-month warranty on our instant hot water heater. If you encounter any after-sales issues regarding your small water heater, you can always contact our tankless electric water heater support team. Package includes: mini tankless water heater electric x1, screws x4, instruction manual x1.

10. ZOOTEALY Mini Tankless Water Heater Electric 3KW 110V: Point of Use Hot Water Heater Under Sink on

ZOOTEALY Mini Tankless Water Heater Electric 3KW 110V: Point of Use Hot Water Heater Under Sink on
8.5

Zootealy

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  • Tankless Electric Water HeaterThis instant water heater features an ABS housing and aluminum heating element, paired with an LED display. With a 3000W power output, this mini water heater can raise water temperature by 113F in just 15 seconds (at a water flow rate of 0.26-1.32 GPM). No preheating requiredenjoy instant, continuous hot water on demand to meet daily hot water needs.
  • Safe & ReliableThe endless water heater electric is UL certified and packed with advanced safety features, including water-electricity separation, IPX4 waterproof rating, leakage protection, dry-burn protection, and auto-shutoff for overheating or idle status. It prevents electric leakage and pipe corrosion. Boasting a high thermal efficiency of 98%, on demand water heater lets you enjoy hot water anytime while saving energy.
  • Compact, Efficient & VersatileSmall tankless water heater measuring 8.275.912.17 inches, this point of use water heater is compact and space-saving. Its sleek square design makes it ideal for homes, over/under-sink installations, RVs, food trucks, and more. It can be mounted inside cabinets or paired with washing machines and dishwashers.
  • Easy InstallationDesigned for compact spaces, our over/under sink water heater fits seamlessly in various home corners. This electric water heater 110v comes with pre-drilled mounting holes, an instruction manual, and G1/2 water pipe connections. It includes a plug-in power cordno hardwiring needed for hassle-free plug-and-play setup.
  • Dual-Control Tankless HeaterThis instant water heater boasts a dual-control system: smart touchscreen + remote control for easy temperature adjustment. As a plug-in water heater, it lets you switch between F/C by long-pressing the power button for 6 seconds. Real-time inlet/outlet temp and water flow monitoring ensures intuitive control over your hot water.
  • Important NotesPlease confirm if this water heater electric meets your needs: Only supports 3 kW 110V voltage. Requires hardwiring installation, a 32A circuit breaker, and wire gauge of at least 10AWG.

Peter

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