Best Under Sink Water Heater In December 2022

If you aren't someone who makes frequent purchases, selecting the under sink water heater won't be an easy chore for you. However, you shouldn't be concerned because we have provided you with the most comprehensive list possible of the top best under sink water heater. Have a look at the products on our list, and pick the ones that appeal to you the most.

We researched and tested 179 under sink water heater in the market to get you the list of the best under sink water heater. Our most recommended product is thermomate Under Sink Water Heater. Check out our best [count] for all of our favorites, and be sure to read our buying guide to get all the information you need to make the best choice!

Editor's Choice
thermomate Mini Tank Electric Water Heater ES150 1.3 Gallons Point of Use Water Heater for Instant
9.7
thermomate Mini Tank Electric Water Heater ES150 1.3 Gallons Point of Use Water Heater for Instant
Premium Pick
Thermoflow UT15 4 Gallons 110~120V Corded Electric Mini-Tank Water Heater Under Sink 110V ~
9.4
Thermoflow UT15 4 Gallons 110~120V Corded Electric Mini-Tank Water Heater Under Sink 110V ~
Budget Pick
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon</h3>    Bosch Thermotechnology
9.1
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon Bosch Thermotechnology

Top 10 Best Under Sink Water Heater Reviews 2022

1. thermomate Mini Tank Electric Water Heater ES150 1.3 Gallons Point of Use Water Heater for Instant

  • [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%
  • [Premium Quality & Durable] - Glass-lined tank for great insulation, Incoloy 800 stainless steel heating element, T&P relief valve made in USA, UL listed, ensuring a long service life
  • [Adjustable Temperature] - Thermostat with 3 temperature level settings, range from 77°F to 140°F with high temperature limit protection, also a freeze mode to prevent tank from freezing
  • [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

2. Thermoflow UT15 4 Gallons 110~120V Corded Electric Mini-Tank Water Heater Under Sink 110V ~

  • SAFE & RELIABLE - over-heat protection, auto cut-off electricity if not hot water come out, IPX24 water proof, 2.6ft plug in cord, suit for kitchen, bathroom, bar, school, hospital, office and RV.
  • Save Energy - Low stand-by loss power consumption. With Advanced Thermostop Technology of Germany, stop heating or reheating automatically when the water heater reaches a high or low set temperature
  • 4 GALLON CAPACITY - 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Stainless steel tank and heating element designed for efficiency, durability and long life service (Relief Valve has been upgraded)
  • EPS FOAMING TECHNOLOGY - Heating water quickly and better insulation, fast recovery rate eliminates long waits for hot water at your sink
  • NOTES - Please verify that this model is the right size for your hot water needs and electrical requirements before purchase & installation. Dimensions: 18H x 12.2W x 11D inches; Weight: 14 lbs; Water connections: 1/2 inch NPT, Electrical requirements: 1.5 kW, 120 Volts. Max pressure: 150PSI. Nominal current: 13A.

3. Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon</h3> Bosch Thermotechnology

Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon</h3>    Bosch Thermotechnology
9.8
By - Bosch Thermotechnology
  • 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 the sink to provide hot water
  • 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)
  • 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)
  • INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source

4. APCOM UT1 Hot Water Recirculation Pump For Under Sink</h3> AO Smith Timer Water Heaters

  • Without Dedicated Return Line - Designed for single pipe system homes without an existing hot water return line and up to 250 ft of household piping. Works with standard hot water tank or indirect water heater. Electrical outlet required under sink.
  • Fully Automatic Operation - This under sink recirculation system is controlled with a built-in thermostat and timer to conserve water. The pump typically runs three to four times per hour for one to two minutes.
  • Instantly Experience Hot Water - Enjoy the comfort and convenience of hot water in your home without the wait.
  • Energy & Cost Efficient - The most energy efficient circulator on the market that reduces waste and costs associated with the consumption of water.
  • For technical support or installation questions, contact (401) 785-3000. One Wrench Installation - Kit includes stainless steel pump, 2 braided hoses, 2 tees and all necessary fittings. Installs under sink in less than 10 minutes. Pump is designed for indoor installation. No plumber required.

5. 110V-120V 1.5Kw Electric Tank Hot 2.5 Gallon Water Heater Storage,Small Under Sink Counter RV TR

  • [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. 1.5 kW, 110-220 volts. One-year warranty and 24H customer service support, feel free to contact us.
  • [EASY TO USE] storage tank electric water heater with easy-to-operate knob temperature adjustment design,Easy to control warmth.Vent valve, Tee pipeline, pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories.
  • [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.
  • [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,8-15 minutes to heat to your desired temperature).
  • If you have any questions about the product, you can contact us in time, and the customer service is online 24 hours a day for you
  • [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.
  • There are many malicious comments recently, and the only one thing we can do is improve product quality and service continuously. If any product quality problems occur within one year of purchasing the product, we will replace it free of charge.

6. Electric Hot Water Heater 110/120V Small Compact Tank Storage,Rv Tr 2.5-3.0 Gallon Trailer 1.5KW

  • [UPGRADE] According to the customer feedback, the cylinder thickness of the water heater has increased from 0.8mm to 1.2mm. In order to make installation easier, the T-tube has been replaced with a new one! We will constantly improve our products.
  • [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,8-15 minutes to heat to your desired temperature).
  • [COMPACT DESIGN] Can be shelf, wall or floor mounted (Water inlet and outlet upward); Dimensions: 18.0''L x12.6''W x10.2''H; 8.86lbs; 1/2″NPT NPT. 1.5 kW, 110-120 volts. One-year warranty and 24H customer service support, feel free to contact us.
  • [SERVRLF] If you have any questions about the product, you can contact us in time, and the customer service is online 24 hours a day for you
  • [SMART INVERTER FOR ENERGY SAVING] Digital Display,Automatic heat preservation and storage of hot water, 3.0 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%,Maximum temperature167℉,The built-in smart chip heats up to the temperature you set, and automatically Insulation when heated to the specified temperature.
  • [EASY TO USE] storage tank electric water heater with easy-to-operate knob temperature adjustment design,Easy to control warmth.Vent valve, Tee pipeline, pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories.
  • [SAFE DURABLE & LONGEVITY] 304 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.

7. Camplux Mini Tank Electric Water Heater 1.3 Gallons Hot Water Heaters 120V, Under Sink Water

  • 1-year warranty for parts and 24 hours customer service
  • OVERHEAT PROTECTION - When the water temperature of the water heater exceeds 203°F, the electric hot water heater will automatically shut down. Protect the safety of you and your family
  • ADJUSTABLE TEMPERATURE - The point of use water heater has 3 temperature level settings, range from 68°F to 140°F. Thermal efficiency up to 99%
  • HIGH QUALITY & LONG LAST - The mini water heater has UL listed and uses a glass-lined tank with good insulation, and freezing mode can prevent the water tank from freezing, ensure a long service life
  • CONVENIENT HOT WATER - No need to wait for hot water at the sink, get on-demand hot water at your every need
  • EASY TO INSTALL & USE - Small water heater's dimensions 11.4 W × 11.4 H × 9.7 D inches can be shelf, wall, or floor-mounted (bracket included); Connect the water pipe, after filling the water tank, 35.43" cord plugs into the power supply (120V/12A), and it can be used normally

8. Mini Electric Tankless Water Heater - 110V Small Instant Hot Water Heater,Under Sink Plug</h3>

  • [Note] :The small tankless water heater 110v wire requirements 2.5 square (#14 awg wire), breaker ≥30 amps. Otherwise it will trip. Please check whether the wire specifications.If you feel that the water heater is not heating up to your preferred temperature, try waiting longer or reducing the water flow.
  • [110v Tankless Water Heater] :The home water heater is Install below the sink, small size saving you space under the sink. Size: 7.87x 5.12 x 2.56". Mini Tankless Water Heater is the best gift for person who has a new sink!
  • [Heating Water in 3s] :When the water passes through the unit, 3000W output tankless electric water heater will heat in 3 seconds, saving your water bill. You can control the temperature according to the water flow.Water Temperature Range: 35-50℃.
  • [Wide Applications] : The instant water heater 110v tanklesss suitable for universal water pipe: 1/2 inch diameter (inflow or outflow),110V;US Plug. Install the small instant hot water heater under American kitchen island, kitchen and living room, enjoy hot water for washing dishes, food, clothes, faces and so on.
  • [Easy to Install] :Just install the small water heater on a shelf, wall or bracket under the bathroom or kitchen sink; connect the water pipes up and down to provide hot water for your sink.
  • [Safe Automatic Power-Off] :The mini tankless electric water heater 110v automatically shuts down when inactive, overheated, or leaking. And stop heating when there is no water flow, saving your electricity bills.

9. Ariston Andris 2.5 Gallon 6-Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater</h3>

  • Provide immediate hot water at the point of use; install as booster or standalone
  • 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 efficiency
  • Compact design; wall or floor mounted (wall bracket included)
  • Easy installation; installs right at the point of use with water connection and standard 110/120 Volt outlet

10. 4000W Tankless Mini Hot Water Heater Under Sink 110V Thermostatic Washing Heating System</h3>

  • [Health Care] Washing hands and face frequently with hot water can effectively prevent various diseases such as colds and make the body healthier. It is an essential water heater for every family.
  • [Easy to Install] Installation environment requirements: circuit breaker switch greater than 40 amps, wire requirements 4 square meters. 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 outflow), can be directly connected to household conventional hose connectors.
  • [Newly Upgraded Water Heater] The 2022 new instant water heater adopts tempered glass screen, healthy 304 stainless steel waterway, and smart chip to improve heating stability. With multiple protection functions: water and electricity isolation, IPX4 waterproof, leakage protection, dry-burning protection, automatic power-off in over-temperature and inactive states.(Note: Each water heater has been professionally tested and there may be little water residue inside)
  • [Instant Heating & Constant Temperature] 4000W high-efficiency output mini water heater, fast heating in 3 seconds, constant temperature to maintain the best water temperature for you.The water temperature can be remotely controlled and controlled by touch screen.(Adjustable temperature: 86°F ~ 131°F)
  • [Application] Large color digital display,comfortable water temperature, suitable for shower, washing food, bowls, clothes, face, hands, hair salon, etc.